ETH Price: $2,652.96 (-0.42%)

Transaction Decoder

Block:
22493352 at May-16-2025 04:46:11 AM +UTC
Transaction Fee:
0.00007403712002883 ETH $0.20
Gas Used:
98,721 Gas / 0.74996323 Gwei

Emitted Events:

925 ERC721DropProxy.0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef( 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, 0x0000000000000000000000000000000000000000000000000000000000000000, 0x0000000000000000000000008bf8d9ed4ab7b214176e104b83ea204cf76ec761, 0x000000000000000000000000000000000000000000000000000000000002e1f8 )
926 ERC721DropProxy.0x4e26b0356a15833a75d497ecc40ebbb716b99466ed0dba9454f1fff451e25a90( 0x4e26b0356a15833a75d497ecc40ebbb716b99466ed0dba9454f1fff451e25a90, 0x0000000000000000000000008bf8d9ed4ab7b214176e104b83ea204cf76ec761, 0x0000000000000000000000000000000000000000000000000000000000000001, 0x0000000000000000000000000000000000000000000000000000000000000000, 000000000000000000000000000000000000000000000000000000000002e1f7 )

Account State Difference:

  Address   Before After State Difference Code
(Titan Builder)
9.264038449173332481 Eth9.264038536245254481 Eth0.000000087071922
0x7183bb21...7F61c4a17
0x8BF8D9Ed...cf76Ec761
0.005463308465490978 Eth
Nonce: 18
0.005389271345462148 Eth
Nonce: 19
0.00007403712002883

Execution Trace

ERC721DropProxy.efef39a1( )
  • ERC721Drop.purchase( quantity=1 ) => ( 188919 )
    • OperatorFilterRegistry.isOperatorAllowed( registrant=0x7183bb21A9FD0CD2af098895c0e470b7F61c4a17, operator=0x8BF8D9Ed4aB7b214176E104B83EA204cf76Ec761 ) => ( True )
      File 1 of 3: ERC721DropProxy
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      
      // OpenZeppelin Contracts v4.4.1 (proxy/ERC1967/ERC1967Proxy.sol)
      
      // OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol)
      
      /**
       * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
       * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
       * be specified by overriding the virtual {_implementation} function.
       *
       * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
       * different contract through the {_delegate} function.
       *
       * The success and return data of the delegated call will be returned back to the caller of the proxy.
       */
      abstract contract Proxy {
          /**
           * @dev Delegates the current call to `implementation`.
           *
           * This function does not return to its internal call site, it will return directly to the external caller.
           */
          function _delegate(address implementation) internal virtual {
              assembly {
                  // Copy msg.data. We take full control of memory in this inline assembly
                  // block because it will not return to Solidity code. We overwrite the
                  // Solidity scratch pad at memory position 0.
                  calldatacopy(0, 0, calldatasize())
      
                  // Call the implementation.
                  // out and outsize are 0 because we don't know the size yet.
                  let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
      
                  // Copy the returned data.
                  returndatacopy(0, 0, returndatasize())
      
                  switch result
                  // delegatecall returns 0 on error.
                  case 0 {
                      revert(0, returndatasize())
                  }
                  default {
                      return(0, returndatasize())
                  }
              }
          }
      
          /**
           * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
           * and {_fallback} should delegate.
           */
          function _implementation() internal view virtual returns (address);
      
          /**
           * @dev Delegates the current call to the address returned by `_implementation()`.
           *
           * This function does not return to its internal call site, it will return directly to the external caller.
           */
          function _fallback() internal virtual {
              _beforeFallback();
              _delegate(_implementation());
          }
      
          /**
           * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
           * function in the contract matches the call data.
           */
          fallback() external payable virtual {
              _fallback();
          }
      
          /**
           * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
           * is empty.
           */
          receive() external payable virtual {
              _fallback();
          }
      
          /**
           * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
           * call, or as part of the Solidity `fallback` or `receive` functions.
           *
           * If overriden should call `super._beforeFallback()`.
           */
          function _beforeFallback() internal virtual {}
      }
      
      // OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)
      
      // OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)
      
      /**
       * @dev This is the interface that {BeaconProxy} expects of its beacon.
       */
      interface IBeacon {
          /**
           * @dev Must return an address that can be used as a delegate call target.
           *
           * {BeaconProxy} will check that this address is a contract.
           */
          function implementation() external view returns (address);
      }
      
      // OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)
      
      /**
       * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
       * proxy whose upgrades are fully controlled by the current implementation.
       */
      interface IERC1822Proxiable {
          /**
           * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
           * address.
           *
           * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
           * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
           * function revert if invoked through a proxy.
           */
          function proxiableUUID() external view returns (bytes32);
      }
      
      // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
      
      /**
       * @dev Collection of functions related to the address type
       */
      library Address {
          /**
           * @dev Returns true if `account` is a contract.
           *
           * [IMPORTANT]
           * ====
           * It is unsafe to assume that an address for which this function returns
           * false is an externally-owned account (EOA) and not a contract.
           *
           * Among others, `isContract` will return false for the following
           * types of addresses:
           *
           *  - an externally-owned account
           *  - a contract in construction
           *  - an address where a contract will be created
           *  - an address where a contract lived, but was destroyed
           * ====
           *
           * [IMPORTANT]
           * ====
           * You shouldn't rely on `isContract` to protect against flash loan attacks!
           *
           * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
           * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
           * constructor.
           * ====
           */
          function isContract(address account) internal view returns (bool) {
              // This method relies on extcodesize/address.code.length, which returns 0
              // for contracts in construction, since the code is only stored at the end
              // of the constructor execution.
      
              return account.code.length > 0;
          }
      
          /**
           * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
           * `recipient`, forwarding all available gas and reverting on errors.
           *
           * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
           * of certain opcodes, possibly making contracts go over the 2300 gas limit
           * imposed by `transfer`, making them unable to receive funds via
           * `transfer`. {sendValue} removes this limitation.
           *
           * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
           *
           * IMPORTANT: because control is transferred to `recipient`, care must be
           * taken to not create reentrancy vulnerabilities. Consider using
           * {ReentrancyGuard} or the
           * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
           */
          function sendValue(address payable recipient, uint256 amount) internal {
              require(address(this).balance >= amount, "Address: insufficient balance");
      
              (bool success, ) = recipient.call{value: amount}("");
              require(success, "Address: unable to send value, recipient may have reverted");
          }
      
          /**
           * @dev Performs a Solidity function call using a low level `call`. A
           * plain `call` is an unsafe replacement for a function call: use this
           * function instead.
           *
           * If `target` reverts with a revert reason, it is bubbled up by this
           * function (like regular Solidity function calls).
           *
           * Returns the raw returned data. To convert to the expected return value,
           * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
           *
           * Requirements:
           *
           * - `target` must be a contract.
           * - calling `target` with `data` must not revert.
           *
           * _Available since v3.1._
           */
          function functionCall(address target, bytes memory data) internal returns (bytes memory) {
              return functionCall(target, data, "Address: low-level call failed");
          }
      
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
           * `errorMessage` as a fallback revert reason when `target` reverts.
           *
           * _Available since v3.1._
           */
          function functionCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal returns (bytes memory) {
              return functionCallWithValue(target, data, 0, errorMessage);
          }
      
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but also transferring `value` wei to `target`.
           *
           * Requirements:
           *
           * - the calling contract must have an ETH balance of at least `value`.
           * - the called Solidity function must be `payable`.
           *
           * _Available since v3.1._
           */
          function functionCallWithValue(
              address target,
              bytes memory data,
              uint256 value
          ) internal returns (bytes memory) {
              return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
          }
      
          /**
           * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
           * with `errorMessage` as a fallback revert reason when `target` reverts.
           *
           * _Available since v3.1._
           */
          function functionCallWithValue(
              address target,
              bytes memory data,
              uint256 value,
              string memory errorMessage
          ) internal returns (bytes memory) {
              require(address(this).balance >= value, "Address: insufficient balance for call");
              require(isContract(target), "Address: call to non-contract");
      
              (bool success, bytes memory returndata) = target.call{value: value}(data);
              return verifyCallResult(success, returndata, errorMessage);
          }
      
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but performing a static call.
           *
           * _Available since v3.3._
           */
          function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
              return functionStaticCall(target, data, "Address: low-level static call failed");
          }
      
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
           * but performing a static call.
           *
           * _Available since v3.3._
           */
          function functionStaticCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal view returns (bytes memory) {
              require(isContract(target), "Address: static call to non-contract");
      
              (bool success, bytes memory returndata) = target.staticcall(data);
              return verifyCallResult(success, returndata, errorMessage);
          }
      
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but performing a delegate call.
           *
           * _Available since v3.4._
           */
          function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
              return functionDelegateCall(target, data, "Address: low-level delegate call failed");
          }
      
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
           * but performing a delegate call.
           *
           * _Available since v3.4._
           */
          function functionDelegateCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal returns (bytes memory) {
              require(isContract(target), "Address: delegate call to non-contract");
      
              (bool success, bytes memory returndata) = target.delegatecall(data);
              return verifyCallResult(success, returndata, errorMessage);
          }
      
          /**
           * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
           * revert reason using the provided one.
           *
           * _Available since v4.3._
           */
          function verifyCallResult(
              bool success,
              bytes memory returndata,
              string memory errorMessage
          ) internal pure returns (bytes memory) {
              if (success) {
                  return returndata;
              } else {
                  // Look for revert reason and bubble it up if present
                  if (returndata.length > 0) {
                      // The easiest way to bubble the revert reason is using memory via assembly
      
                      assembly {
                          let returndata_size := mload(returndata)
                          revert(add(32, returndata), returndata_size)
                      }
                  } else {
                      revert(errorMessage);
                  }
              }
          }
      }
      
      // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol)
      
      /**
       * @dev Library for reading and writing primitive types to specific storage slots.
       *
       * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
       * This library helps with reading and writing to such slots without the need for inline assembly.
       *
       * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
       *
       * Example usage to set ERC1967 implementation slot:
       * ```
       * contract ERC1967 {
       *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
       *
       *     function _getImplementation() internal view returns (address) {
       *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
       *     }
       *
       *     function _setImplementation(address newImplementation) internal {
       *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
       *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
       *     }
       * }
       * ```
       *
       * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
       */
      library StorageSlot {
          struct AddressSlot {
              address value;
          }
      
          struct BooleanSlot {
              bool value;
          }
      
          struct Bytes32Slot {
              bytes32 value;
          }
      
          struct Uint256Slot {
              uint256 value;
          }
      
          /**
           * @dev Returns an `AddressSlot` with member `value` located at `slot`.
           */
          function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
              assembly {
                  r.slot := slot
              }
          }
      
          /**
           * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
           */
          function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
              assembly {
                  r.slot := slot
              }
          }
      
          /**
           * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
           */
          function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
              assembly {
                  r.slot := slot
              }
          }
      
          /**
           * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
           */
          function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
              assembly {
                  r.slot := slot
              }
          }
      }
      
      /**
       * @dev This abstract contract provides getters and event emitting update functions for
       * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
       *
       * _Available since v4.1._
       *
       * @custom:oz-upgrades-unsafe-allow delegatecall
       */
      abstract contract ERC1967Upgrade {
          // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
          bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;
      
          /**
           * @dev Storage slot with the address of the current implementation.
           * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
           * validated in the constructor.
           */
          bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
      
          /**
           * @dev Emitted when the implementation is upgraded.
           */
          event Upgraded(address indexed implementation);
      
          /**
           * @dev Returns the current implementation address.
           */
          function _getImplementation() internal view returns (address) {
              return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
          }
      
          /**
           * @dev Stores a new address in the EIP1967 implementation slot.
           */
          function _setImplementation(address newImplementation) private {
              require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
              StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
          }
      
          /**
           * @dev Perform implementation upgrade
           *
           * Emits an {Upgraded} event.
           */
          function _upgradeTo(address newImplementation) internal {
              _setImplementation(newImplementation);
              emit Upgraded(newImplementation);
          }
      
          /**
           * @dev Perform implementation upgrade with additional setup call.
           *
           * Emits an {Upgraded} event.
           */
          function _upgradeToAndCall(
              address newImplementation,
              bytes memory data,
              bool forceCall
          ) internal {
              _upgradeTo(newImplementation);
              if (data.length > 0 || forceCall) {
                  Address.functionDelegateCall(newImplementation, data);
              }
          }
      
          /**
           * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
           *
           * Emits an {Upgraded} event.
           */
          function _upgradeToAndCallUUPS(
              address newImplementation,
              bytes memory data,
              bool forceCall
          ) internal {
              // Upgrades from old implementations will perform a rollback test. This test requires the new
              // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
              // this special case will break upgrade paths from old UUPS implementation to new ones.
              if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
                  _setImplementation(newImplementation);
              } else {
                  try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                      require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
                  } catch {
                      revert("ERC1967Upgrade: new implementation is not UUPS");
                  }
                  _upgradeToAndCall(newImplementation, data, forceCall);
              }
          }
      
          /**
           * @dev Storage slot with the admin of the contract.
           * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
           * validated in the constructor.
           */
          bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
      
          /**
           * @dev Emitted when the admin account has changed.
           */
          event AdminChanged(address previousAdmin, address newAdmin);
      
          /**
           * @dev Returns the current admin.
           */
          function _getAdmin() internal view returns (address) {
              return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
          }
      
          /**
           * @dev Stores a new address in the EIP1967 admin slot.
           */
          function _setAdmin(address newAdmin) private {
              require(newAdmin != address(0), "ERC1967: new admin is the zero address");
              StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
          }
      
          /**
           * @dev Changes the admin of the proxy.
           *
           * Emits an {AdminChanged} event.
           */
          function _changeAdmin(address newAdmin) internal {
              emit AdminChanged(_getAdmin(), newAdmin);
              _setAdmin(newAdmin);
          }
      
          /**
           * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
           * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
           */
          bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
      
          /**
           * @dev Emitted when the beacon is upgraded.
           */
          event BeaconUpgraded(address indexed beacon);
      
          /**
           * @dev Returns the current beacon.
           */
          function _getBeacon() internal view returns (address) {
              return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
          }
      
          /**
           * @dev Stores a new beacon in the EIP1967 beacon slot.
           */
          function _setBeacon(address newBeacon) private {
              require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
              require(
                  Address.isContract(IBeacon(newBeacon).implementation()),
                  "ERC1967: beacon implementation is not a contract"
              );
              StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
          }
      
          /**
           * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
           * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
           *
           * Emits a {BeaconUpgraded} event.
           */
          function _upgradeBeaconToAndCall(
              address newBeacon,
              bytes memory data,
              bool forceCall
          ) internal {
              _setBeacon(newBeacon);
              emit BeaconUpgraded(newBeacon);
              if (data.length > 0 || forceCall) {
                  Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
              }
          }
      }
      
      /**
       * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
       * implementation address that can be changed. This address is stored in storage in the location specified by
       * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
       * implementation behind the proxy.
       */
      contract ERC1967Proxy is Proxy, ERC1967Upgrade {
          /**
           * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
           *
           * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
           * function call, and allows initializating the storage of the proxy like a Solidity constructor.
           */
          constructor(address _logic, bytes memory _data) payable {
              assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
              _upgradeToAndCall(_logic, _data, false);
          }
      
          /**
           * @dev Returns the current implementation address.
           */
          function _implementation() internal view virtual override returns (address impl) {
              return ERC1967Upgrade._getImplementation();
          }
      }
      
      /// @dev Zora NFT Creator Proxy Access Contract
      contract ERC721DropProxy is ERC1967Proxy {
          constructor(address _logic, bytes memory _data)
              payable
              ERC1967Proxy(_logic, _data)
          {}
      }

      File 2 of 3: ERC721Drop
      // SPDX-License-Identifier: MIT
      // Creator: Chiru Labs
      pragma solidity ^0.8.4;
      import "./IERC721AUpgradeable.sol";
      import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721ReceiverUpgradeable.sol";
      import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
      import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";
      import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol";
      import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
      import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
      /**
       * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
       * the Metadata extension. Built to optimize for lower gas during batch mints.
       *
       * Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
       *
       * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
       *
       * Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
       */
      contract ERC721AUpgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721AUpgradeable {
          using AddressUpgradeable for address;
          using StringsUpgradeable for uint256;
          // The tokenId of the next token to be minted.
          uint256 internal _currentIndex;
          // The number of tokens burned.
          uint256 internal _burnCounter;
          // Token name
          string private _name;
          // Token symbol
          string private _symbol;
          // Mapping from token ID to ownership details
          // An empty struct value does not necessarily mean the token is unowned. See _ownershipOf implementation for details.
          mapping(uint256 => TokenOwnership) internal _ownerships;
          // Mapping owner address to address data
          mapping(address => AddressData) private _addressData;
          // Mapping from token ID to approved address
          mapping(uint256 => address) private _tokenApprovals;
          // Mapping from owner to operator approvals
          mapping(address => mapping(address => bool)) private _operatorApprovals;
          function __ERC721A_init(string memory name_, string memory symbol_) internal onlyInitializing {
              __ERC721A_init_unchained(name_, symbol_);
          }
          function __ERC721A_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
              _name = name_;
              _symbol = symbol_;
              _currentIndex = _startTokenId();
          }
          /**
           * To change the starting tokenId, please override this function.
           */
          function _startTokenId() internal view virtual returns (uint256) {
              return 0;
          }
          /**
           * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
           */
          function totalSupply() public view override returns (uint256) {
              // Counter underflow is impossible as _burnCounter cannot be incremented
              // more than _currentIndex - _startTokenId() times
              unchecked {
                  return _currentIndex - _burnCounter - _startTokenId();
              }
          }
          /**
           * Returns the total amount of tokens minted in the contract.
           */
          function _totalMinted() internal view returns (uint256) {
              // Counter underflow is impossible as _currentIndex does not decrement,
              // and it is initialized to _startTokenId()
              unchecked {
                  return _currentIndex - _startTokenId();
              }
          }
          /**
           * @dev See {IERC165-supportsInterface}.
           */
          function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
              return
                  interfaceId == type(IERC721Upgradeable).interfaceId ||
                  interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||
                  super.supportsInterface(interfaceId);
          }
          /**
           * @dev See {IERC721-balanceOf}.
           */
          function balanceOf(address owner) public view override returns (uint256) {
              if (owner == address(0)) revert BalanceQueryForZeroAddress();
              return uint256(_addressData[owner].balance);
          }
          /**
           * Returns the number of tokens minted by `owner`.
           */
          function _numberMinted(address owner) internal view returns (uint256) {
              return uint256(_addressData[owner].numberMinted);
          }
          /**
           * Returns the number of tokens burned by or on behalf of `owner`.
           */
          function _numberBurned(address owner) internal view returns (uint256) {
              return uint256(_addressData[owner].numberBurned);
          }
          /**
           * Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
           */
          function _getAux(address owner) internal view returns (uint64) {
              return _addressData[owner].aux;
          }
          /**
           * Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
           * If there are multiple variables, please pack them into a uint64.
           */
          function _setAux(address owner, uint64 aux) internal {
              _addressData[owner].aux = aux;
          }
          /**
           * Gas spent here starts off proportional to the maximum mint batch size.
           * It gradually moves to O(1) as tokens get transferred around in the collection over time.
           */
          function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
              uint256 curr = tokenId;
              unchecked {
                  if (_startTokenId() <= curr && curr < _currentIndex) {
                      TokenOwnership memory ownership = _ownerships[curr];
                      if (!ownership.burned) {
                          if (ownership.addr != address(0)) {
                              return ownership;
                          }
                          // Invariant:
                          // There will always be an ownership that has an address and is not burned
                          // before an ownership that does not have an address and is not burned.
                          // Hence, curr will not underflow.
                          while (true) {
                              curr--;
                              ownership = _ownerships[curr];
                              if (ownership.addr != address(0)) {
                                  return ownership;
                              }
                          }
                      }
                  }
              }
              revert OwnerQueryForNonexistentToken();
          }
          /**
           * @dev See {IERC721-ownerOf}.
           */
          function ownerOf(uint256 tokenId) public view override returns (address) {
              return _ownershipOf(tokenId).addr;
          }
          /**
           * @dev See {IERC721Metadata-name}.
           */
          function name() public view virtual override returns (string memory) {
              return _name;
          }
          /**
           * @dev See {IERC721Metadata-symbol}.
           */
          function symbol() public view virtual override returns (string memory) {
              return _symbol;
          }
          /**
           * @dev See {IERC721Metadata-tokenURI}.
           */
          function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
              if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
              string memory baseURI = _baseURI();
              return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : '';
          }
          /**
           * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
           * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
           * by default, can be overriden in child contracts.
           */
          function _baseURI() internal view virtual returns (string memory) {
              return '';
          }
          /**
           * @dev See {IERC721-approve}.
           */
          function approve(address to, uint256 tokenId) public override {
              address owner = ERC721AUpgradeable.ownerOf(tokenId);
              if (to == owner) revert ApprovalToCurrentOwner();
              if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {
                  revert ApprovalCallerNotOwnerNorApproved();
              }
              _approve(to, tokenId, owner);
          }
          /**
           * @dev See {IERC721-getApproved}.
           */
          function getApproved(uint256 tokenId) public view override returns (address) {
              if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
              return _tokenApprovals[tokenId];
          }
          /**
           * @dev See {IERC721-setApprovalForAll}.
           */
          function setApprovalForAll(address operator, bool approved) public virtual override {
              if (operator == _msgSender()) revert ApproveToCaller();
              _operatorApprovals[_msgSender()][operator] = approved;
              emit ApprovalForAll(_msgSender(), operator, approved);
          }
          /**
           * @dev See {IERC721-isApprovedForAll}.
           */
          function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
              return _operatorApprovals[owner][operator];
          }
          /**
           * @dev See {IERC721-transferFrom}.
           */
          function transferFrom(
              address from,
              address to,
              uint256 tokenId
          ) public virtual override {
              _transfer(from, to, tokenId);
          }
          /**
           * @dev See {IERC721-safeTransferFrom}.
           */
          function safeTransferFrom(
              address from,
              address to,
              uint256 tokenId
          ) public virtual override {
              safeTransferFrom(from, to, tokenId, '');
          }
          /**
           * @dev See {IERC721-safeTransferFrom}.
           */
          function safeTransferFrom(
              address from,
              address to,
              uint256 tokenId,
              bytes memory _data
          ) public virtual override {
              _transfer(from, to, tokenId);
              if (to.isContract() && !_checkContractOnERC721Received(from, to, tokenId, _data)) {
                  revert TransferToNonERC721ReceiverImplementer();
              }
          }
          /**
           * @dev Returns whether `tokenId` exists.
           *
           * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
           *
           * Tokens start existing when they are minted (`_mint`),
           */
          function _exists(uint256 tokenId) internal view returns (bool) {
              return _startTokenId() <= tokenId && tokenId < _currentIndex && !_ownerships[tokenId].burned;
          }
          /**
           * @dev Equivalent to `_safeMint(to, quantity, '')`.
           */
          function _safeMint(address to, uint256 quantity) internal {
              _safeMint(to, quantity, '');
          }
          /**
           * @dev Safely mints `quantity` tokens and transfers them to `to`.
           *
           * Requirements:
           *
           * - If `to` refers to a smart contract, it must implement
           *   {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
           * - `quantity` must be greater than 0.
           *
           * Emits a {Transfer} event.
           */
          function _safeMint(
              address to,
              uint256 quantity,
              bytes memory _data
          ) internal {
              uint256 startTokenId = _currentIndex;
              if (to == address(0)) revert MintToZeroAddress();
              if (quantity == 0) revert MintZeroQuantity();
              _beforeTokenTransfers(address(0), to, startTokenId, quantity);
              // Overflows are incredibly unrealistic.
              // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
              // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
              unchecked {
                  _addressData[to].balance += uint64(quantity);
                  _addressData[to].numberMinted += uint64(quantity);
                  _ownerships[startTokenId].addr = to;
                  _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);
                  uint256 updatedIndex = startTokenId;
                  uint256 end = updatedIndex + quantity;
                  if (to.isContract()) {
                      do {
                          emit Transfer(address(0), to, updatedIndex);
                          if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) {
                              revert TransferToNonERC721ReceiverImplementer();
                          }
                      } while (updatedIndex != end);
                      // Reentrancy protection
                      if (_currentIndex != startTokenId) revert();
                  } else {
                      do {
                          emit Transfer(address(0), to, updatedIndex++);
                      } while (updatedIndex != end);
                  }
                  _currentIndex = updatedIndex;
              }
              _afterTokenTransfers(address(0), to, startTokenId, quantity);
          }
          /**
           * @dev Mints `quantity` tokens and transfers them to `to`.
           *
           * Requirements:
           *
           * - `to` cannot be the zero address.
           * - `quantity` must be greater than 0.
           *
           * Emits a {Transfer} event.
           */
          function _mint(address to, uint256 quantity) internal {
              uint256 startTokenId = _currentIndex;
              if (to == address(0)) revert MintToZeroAddress();
              if (quantity == 0) revert MintZeroQuantity();
              _beforeTokenTransfers(address(0), to, startTokenId, quantity);
              // Overflows are incredibly unrealistic.
              // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
              // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
              unchecked {
                  _addressData[to].balance += uint64(quantity);
                  _addressData[to].numberMinted += uint64(quantity);
                  _ownerships[startTokenId].addr = to;
                  _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);
                  uint256 updatedIndex = startTokenId;
                  uint256 end = updatedIndex + quantity;
                  do {
                      emit Transfer(address(0), to, updatedIndex++);
                  } while (updatedIndex != end);
                  _currentIndex = updatedIndex;
              }
              _afterTokenTransfers(address(0), to, startTokenId, quantity);
          }
          /**
           * @dev Transfers `tokenId` from `from` to `to`.
           *
           * Requirements:
           *
           * - `to` cannot be the zero address.
           * - `tokenId` token must be owned by `from`.
           *
           * Emits a {Transfer} event.
           */
          function _transfer(
              address from,
              address to,
              uint256 tokenId
          ) private {
              TokenOwnership memory prevOwnership = _ownershipOf(tokenId);
              if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
              bool isApprovedOrOwner = (_msgSender() == from ||
                  isApprovedForAll(from, _msgSender()) ||
                  getApproved(tokenId) == _msgSender());
              if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
              if (to == address(0)) revert TransferToZeroAddress();
              _beforeTokenTransfers(from, to, tokenId, 1);
              // Clear approvals from the previous owner
              _approve(address(0), tokenId, from);
              // Underflow of the sender's balance is impossible because we check for
              // ownership above and the recipient's balance can't realistically overflow.
              // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
              unchecked {
                  _addressData[from].balance -= 1;
                  _addressData[to].balance += 1;
                  TokenOwnership storage currSlot = _ownerships[tokenId];
                  currSlot.addr = to;
                  currSlot.startTimestamp = uint64(block.timestamp);
                  // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
                  // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
                  uint256 nextTokenId = tokenId + 1;
                  TokenOwnership storage nextSlot = _ownerships[nextTokenId];
                  if (nextSlot.addr == address(0)) {
                      // This will suffice for checking _exists(nextTokenId),
                      // as a burned slot cannot contain the zero address.
                      if (nextTokenId != _currentIndex) {
                          nextSlot.addr = from;
                          nextSlot.startTimestamp = prevOwnership.startTimestamp;
                      }
                  }
              }
              emit Transfer(from, to, tokenId);
              _afterTokenTransfers(from, to, tokenId, 1);
          }
          /**
           * @dev Equivalent to `_burn(tokenId, false)`.
           */
          function _burn(uint256 tokenId) internal virtual {
              _burn(tokenId, false);
          }
          /**
           * @dev Destroys `tokenId`.
           * The approval is cleared when the token is burned.
           *
           * Requirements:
           *
           * - `tokenId` must exist.
           *
           * Emits a {Transfer} event.
           */
          function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
              TokenOwnership memory prevOwnership = _ownershipOf(tokenId);
              address from = prevOwnership.addr;
              if (approvalCheck) {
                  bool isApprovedOrOwner = (_msgSender() == from ||
                      isApprovedForAll(from, _msgSender()) ||
                      getApproved(tokenId) == _msgSender());
                  if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
              }
              _beforeTokenTransfers(from, address(0), tokenId, 1);
              // Clear approvals from the previous owner
              _approve(address(0), tokenId, from);
              // Underflow of the sender's balance is impossible because we check for
              // ownership above and the recipient's balance can't realistically overflow.
              // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
              unchecked {
                  AddressData storage addressData = _addressData[from];
                  addressData.balance -= 1;
                  addressData.numberBurned += 1;
                  // Keep track of who burned the token, and the timestamp of burning.
                  TokenOwnership storage currSlot = _ownerships[tokenId];
                  currSlot.addr = from;
                  currSlot.startTimestamp = uint64(block.timestamp);
                  currSlot.burned = true;
                  // If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
                  // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
                  uint256 nextTokenId = tokenId + 1;
                  TokenOwnership storage nextSlot = _ownerships[nextTokenId];
                  if (nextSlot.addr == address(0)) {
                      // This will suffice for checking _exists(nextTokenId),
                      // as a burned slot cannot contain the zero address.
                      if (nextTokenId != _currentIndex) {
                          nextSlot.addr = from;
                          nextSlot.startTimestamp = prevOwnership.startTimestamp;
                      }
                  }
              }
              emit Transfer(from, address(0), tokenId);
              _afterTokenTransfers(from, address(0), tokenId, 1);
              // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
              unchecked {
                  _burnCounter++;
              }
          }
          /**
           * @dev Approve `to` to operate on `tokenId`
           *
           * Emits a {Approval} event.
           */
          function _approve(
              address to,
              uint256 tokenId,
              address owner
          ) private {
              _tokenApprovals[tokenId] = to;
              emit Approval(owner, to, tokenId);
          }
          /**
           * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract.
           *
           * @param from address representing the previous owner of the given token ID
           * @param to target address that will receive the tokens
           * @param tokenId uint256 ID of the token to be transferred
           * @param _data bytes optional data to send along with the call
           * @return bool whether the call correctly returned the expected magic value
           */
          function _checkContractOnERC721Received(
              address from,
              address to,
              uint256 tokenId,
              bytes memory _data
          ) private returns (bool) {
              try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                  return retval == IERC721ReceiverUpgradeable(to).onERC721Received.selector;
              } catch (bytes memory reason) {
                  if (reason.length == 0) {
                      revert TransferToNonERC721ReceiverImplementer();
                  } else {
                      assembly {
                          revert(add(32, reason), mload(reason))
                      }
                  }
              }
          }
          /**
           * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
           * And also called before burning one token.
           *
           * startTokenId - the first token id to be transferred
           * quantity - the amount to be transferred
           *
           * Calling conditions:
           *
           * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
           * transferred to `to`.
           * - When `from` is zero, `tokenId` will be minted for `to`.
           * - When `to` is zero, `tokenId` will be burned by `from`.
           * - `from` and `to` are never both zero.
           */
          function _beforeTokenTransfers(
              address from,
              address to,
              uint256 startTokenId,
              uint256 quantity
          ) internal virtual {}
          /**
           * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
           * minting.
           * And also called after one token has been burned.
           *
           * startTokenId - the first token id to be transferred
           * quantity - the amount to be transferred
           *
           * Calling conditions:
           *
           * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
           * transferred to `to`.
           * - When `from` is zero, `tokenId` has been minted for `to`.
           * - When `to` is zero, `tokenId` has been burned by `from`.
           * - `from` and `to` are never both zero.
           */
          function _afterTokenTransfers(
              address from,
              address to,
              uint256 startTokenId,
              uint256 quantity
          ) internal virtual {}
          /**
           * @dev This empty reserved space is put in place to allow future versions to add new
           * variables without shifting down storage in the inheritance chain.
           * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
           */
          uint256[42] private __gap;
      }
      // SPDX-License-Identifier: MIT
      // Creator: Chiru Labs
      pragma solidity ^0.8.4;
      import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol";
      import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721MetadataUpgradeable.sol";
      /**
       * @dev Interface of an ERC721A compliant contract.
       */
      interface IERC721AUpgradeable is IERC721Upgradeable, IERC721MetadataUpgradeable {
          /**
           * The caller must own the token or be an approved operator.
           */
          error ApprovalCallerNotOwnerNorApproved();
          /**
           * The token does not exist.
           */
          error ApprovalQueryForNonexistentToken();
          /**
           * The caller cannot approve to their own address.
           */
          error ApproveToCaller();
          /**
           * The caller cannot approve to the current owner.
           */
          error ApprovalToCurrentOwner();
          /**
           * Cannot query the balance for the zero address.
           */
          error BalanceQueryForZeroAddress();
          /**
           * Cannot mint to the zero address.
           */
          error MintToZeroAddress();
          /**
           * The quantity of tokens minted must be more than zero.
           */
          error MintZeroQuantity();
          /**
           * The token does not exist.
           */
          error OwnerQueryForNonexistentToken();
          /**
           * The caller must own the token or be an approved operator.
           */
          error TransferCallerNotOwnerNorApproved();
          /**
           * The token must be owned by `from`.
           */
          error TransferFromIncorrectOwner();
          /**
           * Cannot safely transfer to a contract that does not implement the ERC721Receiver interface.
           */
          error TransferToNonERC721ReceiverImplementer();
          /**
           * Cannot transfer to the zero address.
           */
          error TransferToZeroAddress();
          /**
           * The token does not exist.
           */
          error URIQueryForNonexistentToken();
          // Compiler will pack this into a single 256bit word.
          struct TokenOwnership {
              // The address of the owner.
              address addr;
              // Keeps track of the start time of ownership with minimal overhead for tokenomics.
              uint64 startTimestamp;
              // Whether the token has been burned.
              bool burned;
          }
          // Compiler will pack this into a single 256bit word.
          struct AddressData {
              // Realistically, 2**64-1 is more than enough.
              uint64 balance;
              // Keeps track of mint count with minimal overhead for tokenomics.
              uint64 numberMinted;
              // Keeps track of burn count with minimal overhead for tokenomics.
              uint64 numberBurned;
              // For miscellaneous variable(s) pertaining to the address
              // (e.g. number of whitelist mint slots used).
              // If there are multiple variables, please pack them into a uint64.
              uint64 aux;
          }
          /**
           * @dev Returns the total amount of tokens stored by the contract.
           * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
           */
          function totalSupply() external view returns (uint256);
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControl.sol)
      pragma solidity ^0.8.0;
      import "./IAccessControlUpgradeable.sol";
      import "../utils/ContextUpgradeable.sol";
      import "../utils/StringsUpgradeable.sol";
      import "../utils/introspection/ERC165Upgradeable.sol";
      import "../proxy/utils/Initializable.sol";
      /**
       * @dev Contract module that allows children to implement role-based access
       * control mechanisms. This is a lightweight version that doesn't allow enumerating role
       * members except through off-chain means by accessing the contract event logs. Some
       * applications may benefit from on-chain enumerability, for those cases see
       * {AccessControlEnumerable}.
       *
       * Roles are referred to by their `bytes32` identifier. These should be exposed
       * in the external API and be unique. The best way to achieve this is by
       * using `public constant` hash digests:
       *
       * ```
       * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
       * ```
       *
       * Roles can be used to represent a set of permissions. To restrict access to a
       * function call, use {hasRole}:
       *
       * ```
       * function foo() public {
       *     require(hasRole(MY_ROLE, msg.sender));
       *     ...
       * }
       * ```
       *
       * Roles can be granted and revoked dynamically via the {grantRole} and
       * {revokeRole} functions. Each role has an associated admin role, and only
       * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
       *
       * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
       * that only accounts with this role will be able to grant or revoke other
       * roles. More complex role relationships can be created by using
       * {_setRoleAdmin}.
       *
       * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
       * grant and revoke this role. Extra precautions should be taken to secure
       * accounts that have been granted it.
       */
      abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
          function __AccessControl_init() internal onlyInitializing {
          }
          function __AccessControl_init_unchained() internal onlyInitializing {
          }
          struct RoleData {
              mapping(address => bool) members;
              bytes32 adminRole;
          }
          mapping(bytes32 => RoleData) private _roles;
          bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
          /**
           * @dev Modifier that checks that an account has a specific role. Reverts
           * with a standardized message including the required role.
           *
           * The format of the revert reason is given by the following regular expression:
           *
           *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
           *
           * _Available since v4.1._
           */
          modifier onlyRole(bytes32 role) {
              _checkRole(role);
              _;
          }
          /**
           * @dev See {IERC165-supportsInterface}.
           */
          function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
              return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId);
          }
          /**
           * @dev Returns `true` if `account` has been granted `role`.
           */
          function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
              return _roles[role].members[account];
          }
          /**
           * @dev Revert with a standard message if `_msgSender()` is missing `role`.
           * Overriding this function changes the behavior of the {onlyRole} modifier.
           *
           * Format of the revert message is described in {_checkRole}.
           *
           * _Available since v4.6._
           */
          function _checkRole(bytes32 role) internal view virtual {
              _checkRole(role, _msgSender());
          }
          /**
           * @dev Revert with a standard message if `account` is missing `role`.
           *
           * The format of the revert reason is given by the following regular expression:
           *
           *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
           */
          function _checkRole(bytes32 role, address account) internal view virtual {
              if (!hasRole(role, account)) {
                  revert(
                      string(
                          abi.encodePacked(
                              "AccessControl: account ",
                              StringsUpgradeable.toHexString(uint160(account), 20),
                              " is missing role ",
                              StringsUpgradeable.toHexString(uint256(role), 32)
                          )
                      )
                  );
              }
          }
          /**
           * @dev Returns the admin role that controls `role`. See {grantRole} and
           * {revokeRole}.
           *
           * To change a role's admin, use {_setRoleAdmin}.
           */
          function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
              return _roles[role].adminRole;
          }
          /**
           * @dev Grants `role` to `account`.
           *
           * If `account` had not been already granted `role`, emits a {RoleGranted}
           * event.
           *
           * Requirements:
           *
           * - the caller must have ``role``'s admin role.
           */
          function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
              _grantRole(role, account);
          }
          /**
           * @dev Revokes `role` from `account`.
           *
           * If `account` had been granted `role`, emits a {RoleRevoked} event.
           *
           * Requirements:
           *
           * - the caller must have ``role``'s admin role.
           */
          function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
              _revokeRole(role, account);
          }
          /**
           * @dev Revokes `role` from the calling account.
           *
           * Roles are often managed via {grantRole} and {revokeRole}: this function's
           * purpose is to provide a mechanism for accounts to lose their privileges
           * if they are compromised (such as when a trusted device is misplaced).
           *
           * If the calling account had been revoked `role`, emits a {RoleRevoked}
           * event.
           *
           * Requirements:
           *
           * - the caller must be `account`.
           */
          function renounceRole(bytes32 role, address account) public virtual override {
              require(account == _msgSender(), "AccessControl: can only renounce roles for self");
              _revokeRole(role, account);
          }
          /**
           * @dev Grants `role` to `account`.
           *
           * If `account` had not been already granted `role`, emits a {RoleGranted}
           * event. Note that unlike {grantRole}, this function doesn't perform any
           * checks on the calling account.
           *
           * [WARNING]
           * ====
           * This function should only be called from the constructor when setting
           * up the initial roles for the system.
           *
           * Using this function in any other way is effectively circumventing the admin
           * system imposed by {AccessControl}.
           * ====
           *
           * NOTE: This function is deprecated in favor of {_grantRole}.
           */
          function _setupRole(bytes32 role, address account) internal virtual {
              _grantRole(role, account);
          }
          /**
           * @dev Sets `adminRole` as ``role``'s admin role.
           *
           * Emits a {RoleAdminChanged} event.
           */
          function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
              bytes32 previousAdminRole = getRoleAdmin(role);
              _roles[role].adminRole = adminRole;
              emit RoleAdminChanged(role, previousAdminRole, adminRole);
          }
          /**
           * @dev Grants `role` to `account`.
           *
           * Internal function without access restriction.
           */
          function _grantRole(bytes32 role, address account) internal virtual {
              if (!hasRole(role, account)) {
                  _roles[role].members[account] = true;
                  emit RoleGranted(role, account, _msgSender());
              }
          }
          /**
           * @dev Revokes `role` from `account`.
           *
           * Internal function without access restriction.
           */
          function _revokeRole(bytes32 role, address account) internal virtual {
              if (hasRole(role, account)) {
                  _roles[role].members[account] = false;
                  emit RoleRevoked(role, account, _msgSender());
              }
          }
          /**
           * @dev This empty reserved space is put in place to allow future versions to add new
           * variables without shifting down storage in the inheritance chain.
           * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
           */
          uint256[49] private __gap;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev External interface of AccessControl declared to support ERC165 detection.
       */
      interface IAccessControlUpgradeable {
          /**
           * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
           *
           * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
           * {RoleAdminChanged} not being emitted signaling this.
           *
           * _Available since v3.1._
           */
          event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
          /**
           * @dev Emitted when `account` is granted `role`.
           *
           * `sender` is the account that originated the contract call, an admin role
           * bearer except when using {AccessControl-_setupRole}.
           */
          event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
          /**
           * @dev Emitted when `account` is revoked `role`.
           *
           * `sender` is the account that originated the contract call:
           *   - if using `revokeRole`, it is the admin role bearer
           *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
           */
          event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
          /**
           * @dev Returns `true` if `account` has been granted `role`.
           */
          function hasRole(bytes32 role, address account) external view returns (bool);
          /**
           * @dev Returns the admin role that controls `role`. See {grantRole} and
           * {revokeRole}.
           *
           * To change a role's admin, use {AccessControl-_setRoleAdmin}.
           */
          function getRoleAdmin(bytes32 role) external view returns (bytes32);
          /**
           * @dev Grants `role` to `account`.
           *
           * If `account` had not been already granted `role`, emits a {RoleGranted}
           * event.
           *
           * Requirements:
           *
           * - the caller must have ``role``'s admin role.
           */
          function grantRole(bytes32 role, address account) external;
          /**
           * @dev Revokes `role` from `account`.
           *
           * If `account` had been granted `role`, emits a {RoleRevoked} event.
           *
           * Requirements:
           *
           * - the caller must have ``role``'s admin role.
           */
          function revokeRole(bytes32 role, address account) external;
          /**
           * @dev Revokes `role` from the calling account.
           *
           * Roles are often managed via {grantRole} and {revokeRole}: this function's
           * purpose is to provide a mechanism for accounts to lose their privileges
           * if they are compromised (such as when a trusted device is misplaced).
           *
           * If the calling account had been granted `role`, emits a {RoleRevoked}
           * event.
           *
           * Requirements:
           *
           * - the caller must be `account`.
           */
          function renounceRole(bytes32 role, address account) external;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (interfaces/IERC2981.sol)
      pragma solidity ^0.8.0;
      import "../utils/introspection/IERC165Upgradeable.sol";
      /**
       * @dev Interface for the NFT Royalty Standard.
       *
       * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
       * support for royalty payments across all NFT marketplaces and ecosystem participants.
       *
       * _Available since v4.5._
       */
      interface IERC2981Upgradeable is IERC165Upgradeable {
          /**
           * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
           * exchange. The royalty amount is denominated and should be payed in that same unit of exchange.
           */
          function royaltyInfo(uint256 tokenId, uint256 salePrice)
              external
              view
              returns (address receiver, uint256 royaltyAmount);
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
       * proxy whose upgrades are fully controlled by the current implementation.
       */
      interface IERC1822ProxiableUpgradeable {
          /**
           * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
           * address.
           *
           * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
           * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
           * function revert if invoked through a proxy.
           */
          function proxiableUUID() external view returns (bytes32);
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)
      pragma solidity ^0.8.2;
      import "../beacon/IBeaconUpgradeable.sol";
      import "../../interfaces/draft-IERC1822Upgradeable.sol";
      import "../../utils/AddressUpgradeable.sol";
      import "../../utils/StorageSlotUpgradeable.sol";
      import "../utils/Initializable.sol";
      /**
       * @dev This abstract contract provides getters and event emitting update functions for
       * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
       *
       * _Available since v4.1._
       *
       * @custom:oz-upgrades-unsafe-allow delegatecall
       */
      abstract contract ERC1967UpgradeUpgradeable is Initializable {
          function __ERC1967Upgrade_init() internal onlyInitializing {
          }
          function __ERC1967Upgrade_init_unchained() internal onlyInitializing {
          }
          // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
          bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;
          /**
           * @dev Storage slot with the address of the current implementation.
           * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
           * validated in the constructor.
           */
          bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
          /**
           * @dev Emitted when the implementation is upgraded.
           */
          event Upgraded(address indexed implementation);
          /**
           * @dev Returns the current implementation address.
           */
          function _getImplementation() internal view returns (address) {
              return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
          }
          /**
           * @dev Stores a new address in the EIP1967 implementation slot.
           */
          function _setImplementation(address newImplementation) private {
              require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
              StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
          }
          /**
           * @dev Perform implementation upgrade
           *
           * Emits an {Upgraded} event.
           */
          function _upgradeTo(address newImplementation) internal {
              _setImplementation(newImplementation);
              emit Upgraded(newImplementation);
          }
          /**
           * @dev Perform implementation upgrade with additional setup call.
           *
           * Emits an {Upgraded} event.
           */
          function _upgradeToAndCall(
              address newImplementation,
              bytes memory data,
              bool forceCall
          ) internal {
              _upgradeTo(newImplementation);
              if (data.length > 0 || forceCall) {
                  _functionDelegateCall(newImplementation, data);
              }
          }
          /**
           * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
           *
           * Emits an {Upgraded} event.
           */
          function _upgradeToAndCallUUPS(
              address newImplementation,
              bytes memory data,
              bool forceCall
          ) internal {
              // Upgrades from old implementations will perform a rollback test. This test requires the new
              // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
              // this special case will break upgrade paths from old UUPS implementation to new ones.
              if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) {
                  _setImplementation(newImplementation);
              } else {
                  try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                      require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
                  } catch {
                      revert("ERC1967Upgrade: new implementation is not UUPS");
                  }
                  _upgradeToAndCall(newImplementation, data, forceCall);
              }
          }
          /**
           * @dev Storage slot with the admin of the contract.
           * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
           * validated in the constructor.
           */
          bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
          /**
           * @dev Emitted when the admin account has changed.
           */
          event AdminChanged(address previousAdmin, address newAdmin);
          /**
           * @dev Returns the current admin.
           */
          function _getAdmin() internal view returns (address) {
              return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
          }
          /**
           * @dev Stores a new address in the EIP1967 admin slot.
           */
          function _setAdmin(address newAdmin) private {
              require(newAdmin != address(0), "ERC1967: new admin is the zero address");
              StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
          }
          /**
           * @dev Changes the admin of the proxy.
           *
           * Emits an {AdminChanged} event.
           */
          function _changeAdmin(address newAdmin) internal {
              emit AdminChanged(_getAdmin(), newAdmin);
              _setAdmin(newAdmin);
          }
          /**
           * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
           * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
           */
          bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
          /**
           * @dev Emitted when the beacon is upgraded.
           */
          event BeaconUpgraded(address indexed beacon);
          /**
           * @dev Returns the current beacon.
           */
          function _getBeacon() internal view returns (address) {
              return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
          }
          /**
           * @dev Stores a new beacon in the EIP1967 beacon slot.
           */
          function _setBeacon(address newBeacon) private {
              require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract");
              require(
                  AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
                  "ERC1967: beacon implementation is not a contract"
              );
              StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
          }
          /**
           * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
           * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
           *
           * Emits a {BeaconUpgraded} event.
           */
          function _upgradeBeaconToAndCall(
              address newBeacon,
              bytes memory data,
              bool forceCall
          ) internal {
              _setBeacon(newBeacon);
              emit BeaconUpgraded(newBeacon);
              if (data.length > 0 || forceCall) {
                  _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
              }
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
           * but performing a delegate call.
           *
           * _Available since v3.4._
           */
          function _functionDelegateCall(address target, bytes memory data) private returns (bytes memory) {
              require(AddressUpgradeable.isContract(target), "Address: delegate call to non-contract");
              // solhint-disable-next-line avoid-low-level-calls
              (bool success, bytes memory returndata) = target.delegatecall(data);
              return AddressUpgradeable.verifyCallResult(success, returndata, "Address: low-level delegate call failed");
          }
          /**
           * @dev This empty reserved space is put in place to allow future versions to add new
           * variables without shifting down storage in the inheritance chain.
           * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
           */
          uint256[50] private __gap;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev This is the interface that {BeaconProxy} expects of its beacon.
       */
      interface IBeaconUpgradeable {
          /**
           * @dev Must return an address that can be used as a delegate call target.
           *
           * {BeaconProxy} will check that this address is a contract.
           */
          function implementation() external view returns (address);
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol)
      pragma solidity ^0.8.0;
      import "../../utils/AddressUpgradeable.sol";
      /**
       * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
       * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
       * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
       * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
       *
       * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
       * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
       *
       * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
       * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
       *
       * [CAUTION]
       * ====
       * Avoid leaving a contract uninitialized.
       *
       * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
       * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the
       * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:
       *
       * [.hljs-theme-light.nopadding]
       * ```
       * /// @custom:oz-upgrades-unsafe-allow constructor
       * constructor() initializer {}
       * ```
       * ====
       */
      abstract contract Initializable {
          /**
           * @dev Indicates that the contract has been initialized.
           */
          bool private _initialized;
          /**
           * @dev Indicates that the contract is in the process of being initialized.
           */
          bool private _initializing;
          /**
           * @dev Modifier to protect an initializer function from being invoked twice.
           */
          modifier initializer() {
              // If the contract is initializing we ignore whether _initialized is set in order to support multiple
              // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the
              // contract may have been reentered.
              require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized");
              bool isTopLevelCall = !_initializing;
              if (isTopLevelCall) {
                  _initializing = true;
                  _initialized = true;
              }
              _;
              if (isTopLevelCall) {
                  _initializing = false;
              }
          }
          /**
           * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
           * {initializer} modifier, directly or indirectly.
           */
          modifier onlyInitializing() {
              require(_initializing, "Initializable: contract is not initializing");
              _;
          }
          function _isConstructor() private view returns (bool) {
              return !AddressUpgradeable.isContract(address(this));
          }
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/UUPSUpgradeable.sol)
      pragma solidity ^0.8.0;
      import "../../interfaces/draft-IERC1822Upgradeable.sol";
      import "../ERC1967/ERC1967UpgradeUpgradeable.sol";
      import "./Initializable.sol";
      /**
       * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
       * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
       *
       * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
       * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
       * `UUPSUpgradeable` with a custom implementation of upgrades.
       *
       * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
       *
       * _Available since v4.1._
       */
      abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable {
          function __UUPSUpgradeable_init() internal onlyInitializing {
          }
          function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
          }
          /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
          address private immutable __self = address(this);
          /**
           * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
           * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
           * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
           * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
           * fail.
           */
          modifier onlyProxy() {
              require(address(this) != __self, "Function must be called through delegatecall");
              require(_getImplementation() == __self, "Function must be called through active proxy");
              _;
          }
          /**
           * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
           * callable on the implementing contract but not through proxies.
           */
          modifier notDelegated() {
              require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
              _;
          }
          /**
           * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
           * implementation. It is used to validate that the this implementation remains valid after an upgrade.
           *
           * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
           * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
           * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
           */
          function proxiableUUID() external view virtual override notDelegated returns (bytes32) {
              return _IMPLEMENTATION_SLOT;
          }
          /**
           * @dev Upgrade the implementation of the proxy to `newImplementation`.
           *
           * Calls {_authorizeUpgrade}.
           *
           * Emits an {Upgraded} event.
           */
          function upgradeTo(address newImplementation) external virtual onlyProxy {
              _authorizeUpgrade(newImplementation);
              _upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
          }
          /**
           * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
           * encoded in `data`.
           *
           * Calls {_authorizeUpgrade}.
           *
           * Emits an {Upgraded} event.
           */
          function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual onlyProxy {
              _authorizeUpgrade(newImplementation);
              _upgradeToAndCallUUPS(newImplementation, data, true);
          }
          /**
           * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
           * {upgradeTo} and {upgradeToAndCall}.
           *
           * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
           *
           * ```solidity
           * function _authorizeUpgrade(address) internal override onlyOwner {}
           * ```
           */
          function _authorizeUpgrade(address newImplementation) internal virtual;
          /**
           * @dev This empty reserved space is put in place to allow future versions to add new
           * variables without shifting down storage in the inheritance chain.
           * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
           */
          uint256[50] private __gap;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
      pragma solidity ^0.8.0;
      import "../proxy/utils/Initializable.sol";
      /**
       * @dev Contract module that helps prevent reentrant calls to a function.
       *
       * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
       * available, which can be applied to functions to make sure there are no nested
       * (reentrant) calls to them.
       *
       * Note that because there is a single `nonReentrant` guard, functions marked as
       * `nonReentrant` may not call one another. This can be worked around by making
       * those functions `private`, and then adding `external` `nonReentrant` entry
       * points to them.
       *
       * TIP: If you would like to learn more about reentrancy and alternative ways
       * to protect against it, check out our blog post
       * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
       */
      abstract contract ReentrancyGuardUpgradeable is Initializable {
          // Booleans are more expensive than uint256 or any type that takes up a full
          // word because each write operation emits an extra SLOAD to first read the
          // slot's contents, replace the bits taken up by the boolean, and then write
          // back. This is the compiler's defense against contract upgrades and
          // pointer aliasing, and it cannot be disabled.
          // The values being non-zero value makes deployment a bit more expensive,
          // but in exchange the refund on every call to nonReentrant will be lower in
          // amount. Since refunds are capped to a percentage of the total
          // transaction's gas, it is best to keep them low in cases like this one, to
          // increase the likelihood of the full refund coming into effect.
          uint256 private constant _NOT_ENTERED = 1;
          uint256 private constant _ENTERED = 2;
          uint256 private _status;
          function __ReentrancyGuard_init() internal onlyInitializing {
              __ReentrancyGuard_init_unchained();
          }
          function __ReentrancyGuard_init_unchained() internal onlyInitializing {
              _status = _NOT_ENTERED;
          }
          /**
           * @dev Prevents a contract from calling itself, directly or indirectly.
           * Calling a `nonReentrant` function from another `nonReentrant`
           * function is not supported. It is possible to prevent this from happening
           * by making the `nonReentrant` function external, and making it call a
           * `private` function that does the actual work.
           */
          modifier nonReentrant() {
              // On the first call to nonReentrant, _notEntered will be true
              require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
              // Any calls to nonReentrant after this point will fail
              _status = _ENTERED;
              _;
              // By storing the original value once again, a refund is triggered (see
              // https://eips.ethereum.org/EIPS/eip-2200)
              _status = _NOT_ENTERED;
          }
          /**
           * @dev This empty reserved space is put in place to allow future versions to add new
           * variables without shifting down storage in the inheritance chain.
           * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
           */
          uint256[49] private __gap;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
      pragma solidity ^0.8.0;
      /**
       * @title ERC721 token receiver interface
       * @dev Interface for any contract that wants to support safeTransfers
       * from ERC721 asset contracts.
       */
      interface IERC721ReceiverUpgradeable {
          /**
           * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
           * by `operator` from `from`, this function is called.
           *
           * It must return its Solidity selector to confirm the token transfer.
           * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
           *
           * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
           */
          function onERC721Received(
              address operator,
              address from,
              uint256 tokenId,
              bytes calldata data
          ) external returns (bytes4);
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
      pragma solidity ^0.8.0;
      import "../../utils/introspection/IERC165Upgradeable.sol";
      /**
       * @dev Required interface of an ERC721 compliant contract.
       */
      interface IERC721Upgradeable is IERC165Upgradeable {
          /**
           * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
           */
          event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
          /**
           * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
           */
          event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
          /**
           * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
           */
          event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
          /**
           * @dev Returns the number of tokens in ``owner``'s account.
           */
          function balanceOf(address owner) external view returns (uint256 balance);
          /**
           * @dev Returns the owner of the `tokenId` token.
           *
           * Requirements:
           *
           * - `tokenId` must exist.
           */
          function ownerOf(uint256 tokenId) external view returns (address owner);
          /**
           * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
           * are aware of the ERC721 protocol to prevent tokens from being forever locked.
           *
           * Requirements:
           *
           * - `from` cannot be the zero address.
           * - `to` cannot be the zero address.
           * - `tokenId` token must exist and be owned by `from`.
           * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
           * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
           *
           * Emits a {Transfer} event.
           */
          function safeTransferFrom(
              address from,
              address to,
              uint256 tokenId
          ) external;
          /**
           * @dev Transfers `tokenId` token from `from` to `to`.
           *
           * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
           *
           * Requirements:
           *
           * - `from` cannot be the zero address.
           * - `to` cannot be the zero address.
           * - `tokenId` token must be owned by `from`.
           * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
           *
           * Emits a {Transfer} event.
           */
          function transferFrom(
              address from,
              address to,
              uint256 tokenId
          ) external;
          /**
           * @dev Gives permission to `to` to transfer `tokenId` token to another account.
           * The approval is cleared when the token is transferred.
           *
           * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
           *
           * Requirements:
           *
           * - The caller must own the token or be an approved operator.
           * - `tokenId` must exist.
           *
           * Emits an {Approval} event.
           */
          function approve(address to, uint256 tokenId) external;
          /**
           * @dev Returns the account approved for `tokenId` token.
           *
           * Requirements:
           *
           * - `tokenId` must exist.
           */
          function getApproved(uint256 tokenId) external view returns (address operator);
          /**
           * @dev Approve or remove `operator` as an operator for the caller.
           * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
           *
           * Requirements:
           *
           * - The `operator` cannot be the caller.
           *
           * Emits an {ApprovalForAll} event.
           */
          function setApprovalForAll(address operator, bool _approved) external;
          /**
           * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
           *
           * See {setApprovalForAll}
           */
          function isApprovedForAll(address owner, address operator) external view returns (bool);
          /**
           * @dev Safely transfers `tokenId` token from `from` to `to`.
           *
           * Requirements:
           *
           * - `from` cannot be the zero address.
           * - `to` cannot be the zero address.
           * - `tokenId` token must exist and be owned by `from`.
           * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
           * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
           *
           * Emits a {Transfer} event.
           */
          function safeTransferFrom(
              address from,
              address to,
              uint256 tokenId,
              bytes calldata data
          ) external;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
      pragma solidity ^0.8.0;
      import "../IERC721Upgradeable.sol";
      /**
       * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
       * @dev See https://eips.ethereum.org/EIPS/eip-721
       */
      interface IERC721MetadataUpgradeable is IERC721Upgradeable {
          /**
           * @dev Returns the token collection name.
           */
          function name() external view returns (string memory);
          /**
           * @dev Returns the token collection symbol.
           */
          function symbol() external view returns (string memory);
          /**
           * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
           */
          function tokenURI(uint256 tokenId) external view returns (string memory);
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
      pragma solidity ^0.8.1;
      /**
       * @dev Collection of functions related to the address type
       */
      library AddressUpgradeable {
          /**
           * @dev Returns true if `account` is a contract.
           *
           * [IMPORTANT]
           * ====
           * It is unsafe to assume that an address for which this function returns
           * false is an externally-owned account (EOA) and not a contract.
           *
           * Among others, `isContract` will return false for the following
           * types of addresses:
           *
           *  - an externally-owned account
           *  - a contract in construction
           *  - an address where a contract will be created
           *  - an address where a contract lived, but was destroyed
           * ====
           *
           * [IMPORTANT]
           * ====
           * You shouldn't rely on `isContract` to protect against flash loan attacks!
           *
           * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
           * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
           * constructor.
           * ====
           */
          function isContract(address account) internal view returns (bool) {
              // This method relies on extcodesize/address.code.length, which returns 0
              // for contracts in construction, since the code is only stored at the end
              // of the constructor execution.
              return account.code.length > 0;
          }
          /**
           * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
           * `recipient`, forwarding all available gas and reverting on errors.
           *
           * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
           * of certain opcodes, possibly making contracts go over the 2300 gas limit
           * imposed by `transfer`, making them unable to receive funds via
           * `transfer`. {sendValue} removes this limitation.
           *
           * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
           *
           * IMPORTANT: because control is transferred to `recipient`, care must be
           * taken to not create reentrancy vulnerabilities. Consider using
           * {ReentrancyGuard} or the
           * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
           */
          function sendValue(address payable recipient, uint256 amount) internal {
              require(address(this).balance >= amount, "Address: insufficient balance");
              (bool success, ) = recipient.call{value: amount}("");
              require(success, "Address: unable to send value, recipient may have reverted");
          }
          /**
           * @dev Performs a Solidity function call using a low level `call`. A
           * plain `call` is an unsafe replacement for a function call: use this
           * function instead.
           *
           * If `target` reverts with a revert reason, it is bubbled up by this
           * function (like regular Solidity function calls).
           *
           * Returns the raw returned data. To convert to the expected return value,
           * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
           *
           * Requirements:
           *
           * - `target` must be a contract.
           * - calling `target` with `data` must not revert.
           *
           * _Available since v3.1._
           */
          function functionCall(address target, bytes memory data) internal returns (bytes memory) {
              return functionCall(target, data, "Address: low-level call failed");
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
           * `errorMessage` as a fallback revert reason when `target` reverts.
           *
           * _Available since v3.1._
           */
          function functionCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal returns (bytes memory) {
              return functionCallWithValue(target, data, 0, errorMessage);
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but also transferring `value` wei to `target`.
           *
           * Requirements:
           *
           * - the calling contract must have an ETH balance of at least `value`.
           * - the called Solidity function must be `payable`.
           *
           * _Available since v3.1._
           */
          function functionCallWithValue(
              address target,
              bytes memory data,
              uint256 value
          ) internal returns (bytes memory) {
              return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
          }
          /**
           * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
           * with `errorMessage` as a fallback revert reason when `target` reverts.
           *
           * _Available since v3.1._
           */
          function functionCallWithValue(
              address target,
              bytes memory data,
              uint256 value,
              string memory errorMessage
          ) internal returns (bytes memory) {
              require(address(this).balance >= value, "Address: insufficient balance for call");
              require(isContract(target), "Address: call to non-contract");
              (bool success, bytes memory returndata) = target.call{value: value}(data);
              return verifyCallResult(success, returndata, errorMessage);
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but performing a static call.
           *
           * _Available since v3.3._
           */
          function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
              return functionStaticCall(target, data, "Address: low-level static call failed");
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
           * but performing a static call.
           *
           * _Available since v3.3._
           */
          function functionStaticCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal view returns (bytes memory) {
              require(isContract(target), "Address: static call to non-contract");
              (bool success, bytes memory returndata) = target.staticcall(data);
              return verifyCallResult(success, returndata, errorMessage);
          }
          /**
           * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
           * revert reason using the provided one.
           *
           * _Available since v4.3._
           */
          function verifyCallResult(
              bool success,
              bytes memory returndata,
              string memory errorMessage
          ) internal pure returns (bytes memory) {
              if (success) {
                  return returndata;
              } else {
                  // Look for revert reason and bubble it up if present
                  if (returndata.length > 0) {
                      // The easiest way to bubble the revert reason is using memory via assembly
                      assembly {
                          let returndata_size := mload(returndata)
                          revert(add(32, returndata), returndata_size)
                      }
                  } else {
                      revert(errorMessage);
                  }
              }
          }
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
      pragma solidity ^0.8.0;
      import "../proxy/utils/Initializable.sol";
      /**
       * @dev Provides information about the current execution context, including the
       * sender of the transaction and its data. While these are generally available
       * via msg.sender and msg.data, they should not be accessed in such a direct
       * manner, since when dealing with meta-transactions the account sending and
       * paying for execution may not be the actual sender (as far as an application
       * is concerned).
       *
       * This contract is only required for intermediate, library-like contracts.
       */
      abstract contract ContextUpgradeable is Initializable {
          function __Context_init() internal onlyInitializing {
          }
          function __Context_init_unchained() internal onlyInitializing {
          }
          function _msgSender() internal view virtual returns (address) {
              return msg.sender;
          }
          function _msgData() internal view virtual returns (bytes calldata) {
              return msg.data;
          }
          /**
           * @dev This empty reserved space is put in place to allow future versions to add new
           * variables without shifting down storage in the inheritance chain.
           * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
           */
          uint256[50] private __gap;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev Library for reading and writing primitive types to specific storage slots.
       *
       * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
       * This library helps with reading and writing to such slots without the need for inline assembly.
       *
       * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
       *
       * Example usage to set ERC1967 implementation slot:
       * ```
       * contract ERC1967 {
       *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
       *
       *     function _getImplementation() internal view returns (address) {
       *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
       *     }
       *
       *     function _setImplementation(address newImplementation) internal {
       *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
       *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
       *     }
       * }
       * ```
       *
       * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
       */
      library StorageSlotUpgradeable {
          struct AddressSlot {
              address value;
          }
          struct BooleanSlot {
              bool value;
          }
          struct Bytes32Slot {
              bytes32 value;
          }
          struct Uint256Slot {
              uint256 value;
          }
          /**
           * @dev Returns an `AddressSlot` with member `value` located at `slot`.
           */
          function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
              assembly {
                  r.slot := slot
              }
          }
          /**
           * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
           */
          function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
              assembly {
                  r.slot := slot
              }
          }
          /**
           * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
           */
          function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
              assembly {
                  r.slot := slot
              }
          }
          /**
           * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
           */
          function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
              assembly {
                  r.slot := slot
              }
          }
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev String operations.
       */
      library StringsUpgradeable {
          bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
          /**
           * @dev Converts a `uint256` to its ASCII `string` decimal representation.
           */
          function toString(uint256 value) internal pure returns (string memory) {
              // Inspired by OraclizeAPI's implementation - MIT licence
              // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
              if (value == 0) {
                  return "0";
              }
              uint256 temp = value;
              uint256 digits;
              while (temp != 0) {
                  digits++;
                  temp /= 10;
              }
              bytes memory buffer = new bytes(digits);
              while (value != 0) {
                  digits -= 1;
                  buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
                  value /= 10;
              }
              return string(buffer);
          }
          /**
           * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
           */
          function toHexString(uint256 value) internal pure returns (string memory) {
              if (value == 0) {
                  return "0x00";
              }
              uint256 temp = value;
              uint256 length = 0;
              while (temp != 0) {
                  length++;
                  temp >>= 8;
              }
              return toHexString(value, length);
          }
          /**
           * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
           */
          function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
              bytes memory buffer = new bytes(2 * length + 2);
              buffer[0] = "0";
              buffer[1] = "x";
              for (uint256 i = 2 * length + 1; i > 1; --i) {
                  buffer[i] = _HEX_SYMBOLS[value & 0xf];
                  value >>= 4;
              }
              require(value == 0, "Strings: hex length insufficient");
              return string(buffer);
          }
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev These functions deal with verification of Merkle Trees proofs.
       *
       * The proofs can be generated using the JavaScript library
       * https://github.com/miguelmota/merkletreejs[merkletreejs].
       * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
       *
       * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
       *
       * WARNING: You should avoid using leaf values that are 64 bytes long prior to
       * hashing, or use a hash function other than keccak256 for hashing leaves.
       * This is because the concatenation of a sorted pair of internal nodes in
       * the merkle tree could be reinterpreted as a leaf value.
       */
      library MerkleProofUpgradeable {
          /**
           * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
           * defined by `root`. For this, a `proof` must be provided, containing
           * sibling hashes on the branch from the leaf to the root of the tree. Each
           * pair of leaves and each pair of pre-images are assumed to be sorted.
           */
          function verify(
              bytes32[] memory proof,
              bytes32 root,
              bytes32 leaf
          ) internal pure returns (bool) {
              return processProof(proof, leaf) == root;
          }
          /**
           * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
           * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
           * hash matches the root of the tree. When processing the proof, the pairs
           * of leafs & pre-images are assumed to be sorted.
           *
           * _Available since v4.4._
           */
          function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
              bytes32 computedHash = leaf;
              for (uint256 i = 0; i < proof.length; i++) {
                  bytes32 proofElement = proof[i];
                  if (computedHash <= proofElement) {
                      // Hash(current computed hash + current element of the proof)
                      computedHash = _efficientHash(computedHash, proofElement);
                  } else {
                      // Hash(current element of the proof + current computed hash)
                      computedHash = _efficientHash(proofElement, computedHash);
                  }
              }
              return computedHash;
          }
          function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
              assembly {
                  mstore(0x00, a)
                  mstore(0x20, b)
                  value := keccak256(0x00, 0x40)
              }
          }
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
      pragma solidity ^0.8.0;
      import "./IERC165Upgradeable.sol";
      import "../../proxy/utils/Initializable.sol";
      /**
       * @dev Implementation of the {IERC165} interface.
       *
       * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
       * for the additional interface id that will be supported. For example:
       *
       * ```solidity
       * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
       *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
       * }
       * ```
       *
       * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
       */
      abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
          function __ERC165_init() internal onlyInitializing {
          }
          function __ERC165_init_unchained() internal onlyInitializing {
          }
          /**
           * @dev See {IERC165-supportsInterface}.
           */
          function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
              return interfaceId == type(IERC165Upgradeable).interfaceId;
          }
          /**
           * @dev This empty reserved space is put in place to allow future versions to add new
           * variables without shifting down storage in the inheritance chain.
           * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
           */
          uint256[50] private __gap;
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev Interface of the ERC165 standard, as defined in the
       * https://eips.ethereum.org/EIPS/eip-165[EIP].
       *
       * Implementers can declare support of contract interfaces, which can then be
       * queried by others ({ERC165Checker}).
       *
       * For an implementation, see {ERC165}.
       */
      interface IERC165Upgradeable {
          /**
           * @dev Returns true if this contract implements the interface defined by
           * `interfaceId`. See the corresponding
           * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
           * to learn more about how these ids are created.
           *
           * This function call must use less than 30 000 gas.
           */
          function supportsInterface(bytes4 interfaceId) external view returns (bool);
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      /**
       ________   _____   ____    ______      ____
      /\\_____  \\ /\\  __`\\/\\  _`\\ /\\  _  \\    /\\  _`\\
      \\/____//'/'\\ \\ \\/\\ \\ \\ \\L\\ \\ \\ \\L\\ \\   \\ \\ \\/\\ \\  _ __   ___   _____     ____
           //'/'  \\ \\ \\ \\ \\ \\ ,  /\\ \\  __ \\   \\ \\ \\ \\ \\/\\`'__\\/ __`\\/\\ '__`\\  /',__\\
          //'/'___ \\ \\ \\_\\ \\ \\ \\\\ \\\\ \\ \\/\\ \\   \\ \\ \\_\\ \\ \\ \\//\\ \\L\\ \\ \\ \\L\\ \\/\\__, `\\
          /\\_______\\\\ \\_____\\ \\_\\ \\_\\ \\_\\ \\_\\   \\ \\____/\\ \\_\\\\ \\____/\\ \\ ,__/\\/\\____/
          \\/_______/ \\/_____/\\/_/\\/ /\\/_/\\/_/    \\/___/  \\/_/ \\/___/  \\ \\ \\/  \\/___/
                                                                       \\ \\_\\
                                                                        \\/_/
       */
      import {ERC721AUpgradeable} from "erc721a-upgradeable/ERC721AUpgradeable.sol";
      import {IERC721AUpgradeable} from "erc721a-upgradeable/IERC721AUpgradeable.sol";
      import {IERC2981Upgradeable, IERC165Upgradeable} from "@openzeppelin/contracts-upgradeable/interfaces/IERC2981Upgradeable.sol";
      import {AccessControlUpgradeable} from "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
      import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";
      import {MerkleProofUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/cryptography/MerkleProofUpgradeable.sol";
      import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
      import {IZoraFeeManager} from "./interfaces/IZoraFeeManager.sol";
      import {IMetadataRenderer} from "./interfaces/IMetadataRenderer.sol";
      import {IOperatorFilterRegistry} from "./interfaces/IOperatorFilterRegistry.sol";
      import {IERC721Drop} from "./interfaces/IERC721Drop.sol";
      import {IOwnable} from "./interfaces/IOwnable.sol";
      import {IFactoryUpgradeGate} from "./interfaces/IFactoryUpgradeGate.sol";
      import {OwnableSkeleton} from "./utils/OwnableSkeleton.sol";
      import {FundsReceiver} from "./utils/FundsReceiver.sol";
      import {Version} from "./utils/Version.sol";
      import {ERC721DropStorageV1} from "./storage/ERC721DropStorageV1.sol";
      /**
       * @notice ZORA NFT Base contract for Drops and Editions
       *
       * @dev For drops: assumes 1. linear mint order, 2. max number of mints needs to be less than max_uint64
       *       (if you have more than 18 quintillion linear mints you should probably not be using this contract)
       * @author [email protected]
       *
       */
      contract ERC721Drop is
          ERC721AUpgradeable,
          UUPSUpgradeable,
          IERC2981Upgradeable,
          ReentrancyGuardUpgradeable,
          AccessControlUpgradeable,
          IERC721Drop,
          OwnableSkeleton,
          FundsReceiver,
          Version(9),
          ERC721DropStorageV1
      {
          /// @dev This is the max mint batch size for the optimized ERC721A mint contract
          uint256 internal immutable MAX_MINT_BATCH_SIZE = 8;
          /// @dev Gas limit to send funds
          uint256 internal immutable FUNDS_SEND_GAS_LIMIT = 210_000;
          /// @notice Access control roles
          bytes32 public immutable MINTER_ROLE = keccak256("MINTER");
          bytes32 public immutable SALES_MANAGER_ROLE = keccak256("SALES_MANAGER");
          /// @dev ZORA V3 transfer helper address for auto-approval
          address internal immutable zoraERC721TransferHelper;
          /// @dev Factory upgrade gate
          IFactoryUpgradeGate internal immutable factoryUpgradeGate;
          /// @dev Zora Fee Manager address
          IZoraFeeManager public immutable zoraFeeManager;
          /// @notice Max royalty BPS
          uint16 constant MAX_ROYALTY_BPS = 50_00;
          address immutable marketFilterDAOAddress;
          IOperatorFilterRegistry immutable operatorFilterRegistry =
              IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);
          /// @notice Only allow for users with admin access
          modifier onlyAdmin() {
              if (!hasRole(DEFAULT_ADMIN_ROLE, _msgSender())) {
                  revert Access_OnlyAdmin();
              }
              _;
          }
          /// @notice Only a given role has access or admin
          /// @param role role to check for alongside the admin role
          modifier onlyRoleOrAdmin(bytes32 role) {
              if (
                  !hasRole(DEFAULT_ADMIN_ROLE, _msgSender()) &&
                  !hasRole(role, _msgSender())
              ) {
                  revert Access_MissingRoleOrAdmin(role);
              }
              _;
          }
          /// @notice Allows user to mint tokens at a quantity
          modifier canMintTokens(uint256 quantity) {
              if (quantity + _totalMinted() > config.editionSize) {
                  revert Mint_SoldOut();
              }
              _;
          }
          function _presaleActive() internal view returns (bool) {
              return
                  salesConfig.presaleStart <= block.timestamp &&
                  salesConfig.presaleEnd > block.timestamp;
          }
          function _publicSaleActive() internal view returns (bool) {
              return
                  salesConfig.publicSaleStart <= block.timestamp &&
                  salesConfig.publicSaleEnd > block.timestamp;
          }
          /// @notice Presale active
          modifier onlyPresaleActive() {
              if (!_presaleActive()) {
                  revert Presale_Inactive();
              }
              _;
          }
          /// @notice Public sale active
          modifier onlyPublicSaleActive() {
              if (!_publicSaleActive()) {
                  revert Sale_Inactive();
              }
              _;
          }
          /// @notice Getter for last minted token ID (gets next token id and subtracts 1)
          function _lastMintedTokenId() internal view returns (uint256) {
              return _currentIndex - 1;
          }
          /// @notice Start token ID for minting (1-100 vs 0-99)
          function _startTokenId() internal pure override returns (uint256) {
              return 1;
          }
          /// @notice Global constructor – these variables will not change with further proxy deploys
          /// @dev Marked as an initializer to prevent storage being used of base implementation. Can only be init'd by a proxy.
          /// @param _zoraFeeManager Zora Fee Manager
          /// @param _zoraERC721TransferHelper Transfer helper
          constructor(
              IZoraFeeManager _zoraFeeManager,
              address _zoraERC721TransferHelper,
              IFactoryUpgradeGate _factoryUpgradeGate,
              address _marketFilterDAOAddress
          ) initializer {
              zoraFeeManager = _zoraFeeManager;
              zoraERC721TransferHelper = _zoraERC721TransferHelper;
              factoryUpgradeGate = _factoryUpgradeGate;
              marketFilterDAOAddress = _marketFilterDAOAddress;
          }
          ///  @dev Create a new drop contract
          ///  @param _contractName Contract name
          ///  @param _contractSymbol Contract symbol
          ///  @param _initialOwner User that owns and can mint the edition, gets royalty and sales payouts and can update the base url if needed.
          ///  @param _fundsRecipient Wallet/user that receives funds from sale
          ///  @param _editionSize Number of editions that can be minted in total. If 0, unlimited editions can be minted.
          ///  @param _royaltyBPS BPS of the royalty set on the contract. Can be 0 for no royalty.
          ///  @param _salesConfig New sales config to set upon init
          ///  @param _metadataRenderer Renderer contract to use
          ///  @param _metadataRendererInit Renderer data initial contract
          function initialize(
              string memory _contractName,
              string memory _contractSymbol,
              address _initialOwner,
              address payable _fundsRecipient,
              uint64 _editionSize,
              uint16 _royaltyBPS,
              SalesConfiguration memory _salesConfig,
              IMetadataRenderer _metadataRenderer,
              bytes memory _metadataRendererInit
          ) public initializer {
              // Setup ERC721A
              __ERC721A_init(_contractName, _contractSymbol);
              // Setup access control
              __AccessControl_init();
              // Setup re-entracy guard
              __ReentrancyGuard_init();
              // Setup the owner role
              _setupRole(DEFAULT_ADMIN_ROLE, _initialOwner);
              // Set ownership to original sender of contract call
              _setOwner(_initialOwner);
              if (config.royaltyBPS > MAX_ROYALTY_BPS) {
                  revert Setup_RoyaltyPercentageTooHigh(MAX_ROYALTY_BPS);
              }
              // Update salesConfig
              salesConfig = _salesConfig;
              // Setup config variables
              config.editionSize = _editionSize;
              config.metadataRenderer = _metadataRenderer;
              config.royaltyBPS = _royaltyBPS;
              config.fundsRecipient = _fundsRecipient;
              _metadataRenderer.initializeWithData(_metadataRendererInit);
          }
          /// @dev Getter for admin role associated with the contract to handle metadata
          /// @return boolean if address is admin
          function isAdmin(address user) external view returns (bool) {
              return hasRole(DEFAULT_ADMIN_ROLE, user);
          }
          /// @notice Connects this contract to the factory upgrade gate
          /// @param newImplementation proposed new upgrade implementation
          /// @dev Only can be called by admin
          function _authorizeUpgrade(address newImplementation)
              internal
              override
              onlyAdmin
          {
              if (
                  !factoryUpgradeGate.isValidUpgradePath({
                      _newImpl: newImplementation,
                      _currentImpl: _getImplementation()
                  })
              ) {
                  revert Admin_InvalidUpgradeAddress(newImplementation);
              }
          }
          //        ,-.
          //        `-'
          //        /|\\
          //         |             ,----------.
          //        / \\            |ERC721Drop|
          //      Caller           `----+-----'
          //        |       burn()      |
          //        | ------------------>
          //        |                   |
          //        |                   |----.
          //        |                   |    | burn token
          //        |                   |<---'
          //      Caller           ,----+-----.
          //        ,-.            |ERC721Drop|
          //        `-'            `----------'
          //        /|\\
          //         |
          //        / \\
          /// @param tokenId Token ID to burn
          /// @notice User burn function for token id
          function burn(uint256 tokenId) public {
              _burn(tokenId, true);
          }
          /// @dev Get royalty information for token
          /// @param _salePrice Sale price for the token
          function royaltyInfo(uint256, uint256 _salePrice)
              external
              view
              override
              returns (address receiver, uint256 royaltyAmount)
          {
              if (config.fundsRecipient == address(0)) {
                  return (config.fundsRecipient, 0);
              }
              return (
                  config.fundsRecipient,
                  (_salePrice * config.royaltyBPS) / 10_000
              );
          }
          /// @notice Sale details
          /// @return IERC721Drop.SaleDetails sale information details
          function saleDetails()
              external
              view
              returns (IERC721Drop.SaleDetails memory)
          {
              return
                  IERC721Drop.SaleDetails({
                      publicSaleActive: _publicSaleActive(),
                      presaleActive: _presaleActive(),
                      publicSalePrice: salesConfig.publicSalePrice,
                      publicSaleStart: salesConfig.publicSaleStart,
                      publicSaleEnd: salesConfig.publicSaleEnd,
                      presaleStart: salesConfig.presaleStart,
                      presaleEnd: salesConfig.presaleEnd,
                      presaleMerkleRoot: salesConfig.presaleMerkleRoot,
                      totalMinted: _totalMinted(),
                      maxSupply: config.editionSize,
                      maxSalePurchasePerAddress: salesConfig.maxSalePurchasePerAddress
                  });
          }
          /// @dev Number of NFTs the user has minted per address
          /// @param minter to get counts for
          function mintedPerAddress(address minter)
              external
              view
              override
              returns (IERC721Drop.AddressMintDetails memory)
          {
              return
                  IERC721Drop.AddressMintDetails({
                      presaleMints: presaleMintsByAddress[minter],
                      publicMints: _numberMinted(minter) -
                          presaleMintsByAddress[minter],
                      totalMints: _numberMinted(minter)
                  });
          }
          /// @dev Setup auto-approval for Zora v3 access to sell NFT
          ///      Still requires approval for module
          /// @param nftOwner owner of the nft
          /// @param operator operator wishing to transfer/burn/etc the NFTs
          function isApprovedForAll(address nftOwner, address operator)
              public
              view
              override(ERC721AUpgradeable)
              returns (bool)
          {
              if (operator == zoraERC721TransferHelper) {
                  return true;
              }
              return super.isApprovedForAll(nftOwner, operator);
          }
          /// @dev Gets the zora fee for amount of withdraw
          /// @param amount amount of funds to get fee for
          function zoraFeeForAmount(uint256 amount)
              public
              returns (address payable, uint256)
          {
              (address payable recipient, uint256 bps) = zoraFeeManager
                  .getZORAWithdrawFeesBPS(address(this));
              return (recipient, (amount * bps) / 10_000);
          }
          /**
           *** ---------------------------------- ***
           ***                                    ***
           ***     PUBLIC MINTING FUNCTIONS       ***
           ***                                    ***
           *** ---------------------------------- ***
           ***/
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                       ,----------.
          //                       / \\                      |ERC721Drop|
          //                     Caller                     `----+-----'
          //                       |          purchase()         |
          //                       | ---------------------------->
          //                       |                             |
          //                       |                             |
          //          ___________________________________________________________
          //          ! ALT  /  drop has no tokens left for caller to mint?      !
          //          !_____/      |                             |               !
          //          !            |    revert Mint_SoldOut()    |               !
          //          !            | <----------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                             |
          //                       |                             |
          //          ___________________________________________________________
          //          ! ALT  /  public sale isn't active?        |               !
          //          !_____/      |                             |               !
          //          !            |    revert Sale_Inactive()   |               !
          //          !            | <----------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                             |
          //                       |                             |
          //          ___________________________________________________________
          //          ! ALT  /  inadequate funds sent?           |               !
          //          !_____/      |                             |               !
          //          !            | revert Purchase_WrongPrice()|               !
          //          !            | <----------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                             |
          //                       |                             |----.
          //                       |                             |    | mint tokens
          //                       |                             |<---'
          //                       |                             |
          //                       |                             |----.
          //                       |                             |    | emit IERC721Drop.Sale()
          //                       |                             |<---'
          //                       |                             |
          //                       | return first minted token ID|
          //                       | <----------------------------
          //                     Caller                     ,----+-----.
          //                       ,-.                      |ERC721Drop|
          //                       `-'                      `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /**
            @dev This allows the user to purchase a edition edition
                 at the given price in the contract.
           */
          function purchase(uint256 quantity)
              external
              payable
              nonReentrant
              canMintTokens(quantity)
              onlyPublicSaleActive
              returns (uint256)
          {
              uint256 salePrice = salesConfig.publicSalePrice;
              if (msg.value != salePrice * quantity) {
                  revert Purchase_WrongPrice(salePrice * quantity);
              }
              // If max purchase per address == 0 there is no limit.
              // Any other number, the per address mint limit is that.
              if (
                  salesConfig.maxSalePurchasePerAddress != 0 &&
                  _numberMinted(_msgSender()) +
                      quantity -
                      presaleMintsByAddress[_msgSender()] >
                  salesConfig.maxSalePurchasePerAddress
              ) {
                  revert Purchase_TooManyForAddress();
              }
              _mintNFTs(_msgSender(), quantity);
              uint256 firstMintedTokenId = _lastMintedTokenId() - quantity;
              emit IERC721Drop.Sale({
                  to: _msgSender(),
                  quantity: quantity,
                  pricePerToken: salePrice,
                  firstPurchasedTokenId: firstMintedTokenId
              });
              return firstMintedTokenId;
          }
          /// @notice Function to mint NFTs
          /// @dev (important: Does not enforce max supply limit, enforce that limit earlier)
          /// @dev This batches in size of 8 as per recommended by ERC721A creators
          /// @param to address to mint NFTs to
          /// @param quantity number of NFTs to mint
          function _mintNFTs(address to, uint256 quantity) internal {
              do {
                  uint256 toMint = quantity > MAX_MINT_BATCH_SIZE
                      ? MAX_MINT_BATCH_SIZE
                      : quantity;
                  _mint({to: to, quantity: toMint});
                  quantity -= toMint;
              } while (quantity > 0);
          }
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                             ,----------.
          //                       / \\                            |ERC721Drop|
          //                     Caller                           `----+-----'
          //                       |         purchasePresale()         |
          //                       | ---------------------------------->
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  drop has no tokens left for caller to mint?            !
          //          !_____/      |                                   |               !
          //          !            |       revert Mint_SoldOut()       |               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  presale sale isn't active?             |               !
          //          !_____/      |                                   |               !
          //          !            |     revert Presale_Inactive()     |               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  merkle proof unapproved for caller?    |               !
          //          !_____/      |                                   |               !
          //          !            | revert Presale_MerkleNotApproved()|               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  inadequate funds sent?                 |               !
          //          !_____/      |                                   |               !
          //          !            |    revert Purchase_WrongPrice()   |               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |----.
          //                       |                                   |    | mint tokens
          //                       |                                   |<---'
          //                       |                                   |
          //                       |                                   |----.
          //                       |                                   |    | emit IERC721Drop.Sale()
          //                       |                                   |<---'
          //                       |                                   |
          //                       |    return first minted token ID   |
          //                       | <----------------------------------
          //                     Caller                           ,----+-----.
          //                       ,-.                            |ERC721Drop|
          //                       `-'                            `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /// @notice Merkle-tree based presale purchase function
          /// @param quantity quantity to purchase
          /// @param maxQuantity max quantity that can be purchased via merkle proof #
          /// @param pricePerToken price that each token is purchased at
          /// @param merkleProof proof for presale mint
          function purchasePresale(
              uint256 quantity,
              uint256 maxQuantity,
              uint256 pricePerToken,
              bytes32[] calldata merkleProof
          )
              external
              payable
              nonReentrant
              canMintTokens(quantity)
              onlyPresaleActive
              returns (uint256)
          {
              if (
                  !MerkleProofUpgradeable.verify(
                      merkleProof,
                      salesConfig.presaleMerkleRoot,
                      keccak256(
                          // address, uint256, uint256
                          abi.encode(_msgSender(), maxQuantity, pricePerToken)
                      )
                  )
              ) {
                  revert Presale_MerkleNotApproved();
              }
              if (msg.value != pricePerToken * quantity) {
                  revert Purchase_WrongPrice(pricePerToken * quantity);
              }
              presaleMintsByAddress[_msgSender()] += quantity;
              if (presaleMintsByAddress[_msgSender()] > maxQuantity) {
                  revert Presale_TooManyForAddress();
              }
              _mintNFTs(_msgSender(), quantity);
              uint256 firstMintedTokenId = _lastMintedTokenId() - quantity;
              emit IERC721Drop.Sale({
                  to: _msgSender(),
                  quantity: quantity,
                  pricePerToken: pricePerToken,
                  firstPurchasedTokenId: firstMintedTokenId
              });
              return firstMintedTokenId;
          }
          /**
           *** ---------------------------------- ***
           ***                                    ***
           ***     ADMIN OPERATOR FILTERING       ***
           ***                                    ***
           *** ---------------------------------- ***
           ***/
          /// @notice Proxy to update market filter settings in the main registry contracts
          /// @notice Requires admin permissions
          /// @param args Calldata args to pass to the registry
          function updateMarketFilterSettings(bytes calldata args)
              external
              onlyAdmin
              returns (bytes memory)
          {
              (bool success, bytes memory ret) = address(operatorFilterRegistry).call(
                  args
              );
              if (!success) {
                  revert RemoteOperatorFilterRegistryCallFailed();
              }
              return ret;
          }
          /// @notice Manage subscription to the DAO for marketplace filtering based off royalty payouts.
          /// @param enable Enable filtering to non-royalty payout marketplaces
          function manageMarketFilterDAOSubscription(bool enable) external onlyAdmin {
              address self = address(this);
              if (marketFilterDAOAddress == address(0x0)) {
                  revert MarketFilterDAOAddressNotSupportedForChain();
              }
              if (!operatorFilterRegistry.isRegistered(self) && enable) {
                  operatorFilterRegistry.registerAndSubscribe(self, marketFilterDAOAddress);
              } else if (enable) {
                  operatorFilterRegistry.subscribe(self, marketFilterDAOAddress);
              } else {
                  operatorFilterRegistry.unsubscribe(self, false);
                  operatorFilterRegistry.unregister(self);
              }
          }
          /// @notice Hook to filter operators (no-op if no filters are registered)
          /// @dev Part of ERC721A token hooks
          /// @param from Transfer from user
          /// @param to Transfer to user
          /// @param startTokenId Token ID to start with
          /// @param quantity Quantity of token being transferred
          function _beforeTokenTransfers(
              address from,
              address to,
              uint256 startTokenId,
              uint256 quantity
          ) internal virtual override {
              if (
                  from != msg.sender &&
                  address(operatorFilterRegistry).code.length > 0
              ) {
                  if (
                      !operatorFilterRegistry.isOperatorAllowed(
                          address(this),
                          msg.sender
                      )
                  ) {
                      revert OperatorNotAllowed(msg.sender);
                  }
              }
          }
          /**
           *** ---------------------------------- ***
           ***                                    ***
           ***     ADMIN MINTING FUNCTIONS        ***
           ***                                    ***
           *** ---------------------------------- ***
           ***/
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                             ,----------.
          //                       / \\                            |ERC721Drop|
          //                     Caller                           `----+-----'
          //                       |            adminMint()            |
          //                       | ---------------------------------->
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  caller is not admin or minter role?    |               !
          //          !_____/      |                                   |               !
          //          !            | revert Access_MissingRoleOrAdmin()|               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  drop has no tokens left for caller to mint?            !
          //          !_____/      |                                   |               !
          //          !            |       revert Mint_SoldOut()       |               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |----.
          //                       |                                   |    | mint tokens
          //                       |                                   |<---'
          //                       |                                   |
          //                       |    return last minted token ID    |
          //                       | <----------------------------------
          //                     Caller                           ,----+-----.
          //                       ,-.                            |ERC721Drop|
          //                       `-'                            `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /// @notice Mint admin
          /// @param recipient recipient to mint to
          /// @param quantity quantity to mint
          function adminMint(address recipient, uint256 quantity)
              external
              onlyRoleOrAdmin(MINTER_ROLE)
              canMintTokens(quantity)
              returns (uint256)
          {
              _mintNFTs(recipient, quantity);
              return _lastMintedTokenId();
          }
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                             ,----------.
          //                       / \\                            |ERC721Drop|
          //                     Caller                           `----+-----'
          //                       |         adminMintAirdrop()        |
          //                       | ---------------------------------->
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  caller is not admin or minter role?    |               !
          //          !_____/      |                                   |               !
          //          !            | revert Access_MissingRoleOrAdmin()|               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  drop has no tokens left for recipients to mint?        !
          //          !_____/      |                                   |               !
          //          !            |       revert Mint_SoldOut()       |               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |
          //                       |                    _____________________________________
          //                       |                    ! LOOP  /  for all recipients        !
          //                       |                    !______/       |                     !
          //                       |                    !              |----.                !
          //                       |                    !              |    | mint tokens    !
          //                       |                    !              |<---'                !
          //                       |                    !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |    return last minted token ID    |
          //                       | <----------------------------------
          //                     Caller                           ,----+-----.
          //                       ,-.                            |ERC721Drop|
          //                       `-'                            `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /// @dev This mints multiple editions to the given list of addresses.
          /// @param recipients list of addresses to send the newly minted editions to
          function adminMintAirdrop(address[] calldata recipients)
              external
              override
              onlyRoleOrAdmin(MINTER_ROLE)
              canMintTokens(recipients.length)
              returns (uint256)
          {
              uint256 atId = _currentIndex;
              uint256 startAt = atId;
              unchecked {
                  for (
                      uint256 endAt = atId + recipients.length;
                      atId < endAt;
                      atId++
                  ) {
                      _mintNFTs(recipients[atId - startAt], 1);
                  }
              }
              return _lastMintedTokenId();
          }
          /**
           *** ---------------------------------- ***
           ***                                    ***
           ***  ADMIN CONFIGURATION FUNCTIONS     ***
           ***                                    ***
           *** ---------------------------------- ***
           ***/
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                    ,----------.
          //                       / \\                   |ERC721Drop|
          //                     Caller                  `----+-----'
          //                       |        setOwner()        |
          //                       | ------------------------->
          //                       |                          |
          //                       |                          |
          //          ________________________________________________________
          //          ! ALT  /  caller is not admin?          |               !
          //          !_____/      |                          |               !
          //          !            | revert Access_OnlyAdmin()|               !
          //          !            | <-------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                          |
          //                       |                          |----.
          //                       |                          |    | set owner
          //                       |                          |<---'
          //                     Caller                  ,----+-----.
          //                       ,-.                   |ERC721Drop|
          //                       `-'                   `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /// @dev Set new owner for royalties / opensea
          /// @param newOwner new owner to set
          function setOwner(address newOwner) public onlyAdmin {
              _setOwner(newOwner);
          }
          /// @notice Set a new metadata renderer
          /// @param newRenderer new renderer address to use
          /// @param setupRenderer data to setup new renderer with
          function setMetadataRenderer(
              IMetadataRenderer newRenderer,
              bytes memory setupRenderer
          ) external onlyAdmin {
              config.metadataRenderer = newRenderer;
              if (setupRenderer.length > 0) {
                  newRenderer.initializeWithData(setupRenderer);
              }
              emit UpdatedMetadataRenderer({
                  sender: _msgSender(),
                  renderer: newRenderer
              });
          }
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                             ,----------.
          //                       / \\                            |ERC721Drop|
          //                     Caller                           `----+-----'
          //                       |      setSalesConfiguration()      |
          //                       | ---------------------------------->
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  caller is not admin?                   |               !
          //          !_____/      |                                   |               !
          //          !            | revert Access_MissingRoleOrAdmin()|               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |----.
          //                       |                                   |    | set funds recipient
          //                       |                                   |<---'
          //                       |                                   |
          //                       |                                   |----.
          //                       |                                   |    | emit FundsRecipientChanged()
          //                       |                                   |<---'
          //                     Caller                           ,----+-----.
          //                       ,-.                            |ERC721Drop|
          //                       `-'                            `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /// @dev This sets the sales configuration
          // / @param publicSalePrice New public sale price
          function setSaleConfiguration(
              uint104 publicSalePrice,
              uint32 maxSalePurchasePerAddress,
              uint64 publicSaleStart,
              uint64 publicSaleEnd,
              uint64 presaleStart,
              uint64 presaleEnd,
              bytes32 presaleMerkleRoot
          ) external onlyRoleOrAdmin(SALES_MANAGER_ROLE) {
              // SalesConfiguration storage newConfig = SalesConfiguration({
              //     publicSaleStart: publicSaleStart,
              //     publicSaleEnd: publicSaleEnd,
              //     presaleStart: presaleStart,
              //     presaleEnd: presaleEnd,
              //     publicSalePrice: publicSalePrice,
              //     maxSalePurchasePerAddress: maxSalePurchasePerAddress,
              //     presaleMerkleRoot: presaleMerkleRoot
              // });
              salesConfig.publicSalePrice = publicSalePrice;
              salesConfig.maxSalePurchasePerAddress = maxSalePurchasePerAddress;
              salesConfig.publicSaleStart = publicSaleStart;
              salesConfig.publicSaleEnd = publicSaleEnd;
              salesConfig.presaleStart = presaleStart;
              salesConfig.presaleEnd = presaleEnd;
              salesConfig.presaleMerkleRoot = presaleMerkleRoot;
              emit SalesConfigChanged(_msgSender());
          }
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                    ,----------.
          //                       / \\                   |ERC721Drop|
          //                     Caller                  `----+-----'
          //                       |        setOwner()        |
          //                       | ------------------------->
          //                       |                          |
          //                       |                          |
          //          ________________________________________________________
          //          ! ALT  /  caller is not admin or SALES_MANAGER_ROLE?    !
          //          !_____/      |                          |               !
          //          !            | revert Access_OnlyAdmin()|               !
          //          !            | <-------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                          |
          //                       |                          |----.
          //                       |                          |    | set sales configuration
          //                       |                          |<---'
          //                       |                          |
          //                       |                          |----.
          //                       |                          |    | emit SalesConfigChanged()
          //                       |                          |<---'
          //                     Caller                  ,----+-----.
          //                       ,-.                   |ERC721Drop|
          //                       `-'                   `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /// @notice Set a different funds recipient
          /// @param newRecipientAddress new funds recipient address
          function setFundsRecipient(address payable newRecipientAddress)
              external
              onlyRoleOrAdmin(SALES_MANAGER_ROLE)
          {
              // TODO(iain): funds recipient cannot be 0?
              config.fundsRecipient = newRecipientAddress;
              emit FundsRecipientChanged(newRecipientAddress, _msgSender());
          }
          //                       ,-.                  ,-.                      ,-.
          //                       `-'                  `-'                      `-'
          //                       /|\\                  /|\\                      /|\\
          //                        |                    |                        |                      ,----------.
          //                       / \\                  / \\                      / \\                     |ERC721Drop|
          //                     Caller            FeeRecipient            FundsRecipient                `----+-----'
          //                       |                    |           withdraw()   |                            |
          //                       | ------------------------------------------------------------------------->
          //                       |                    |                        |                            |
          //                       |                    |                        |                            |
          //          ________________________________________________________________________________________________________
          //          ! ALT  /  caller is not admin or manager?                  |                            |               !
          //          !_____/      |                    |                        |                            |               !
          //          !            |                    revert Access_WithdrawNotAllowed()                    |               !
          //          !            | <-------------------------------------------------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                    |                        |                            |
          //                       |                    |                   send fee amount                   |
          //                       |                    | <----------------------------------------------------
          //                       |                    |                        |                            |
          //                       |                    |                        |                            |
          //                       |                    |                        |             ____________________________________________________________
          //                       |                    |                        |             ! ALT  /  send unsuccesful?                                 !
          //                       |                    |                        |             !_____/        |                                            !
          //                       |                    |                        |             !              |----.                                       !
          //                       |                    |                        |             !              |    | revert Withdraw_FundsSendFailure()    !
          //                       |                    |                        |             !              |<---'                                       !
          //                       |                    |                        |             !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                    |                        |             !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                    |                        |                            |
          //                       |                    |                        | send remaining funds amount|
          //                       |                    |                        | <---------------------------
          //                       |                    |                        |                            |
          //                       |                    |                        |                            |
          //                       |                    |                        |             ____________________________________________________________
          //                       |                    |                        |             ! ALT  /  send unsuccesful?                                 !
          //                       |                    |                        |             !_____/        |                                            !
          //                       |                    |                        |             !              |----.                                       !
          //                       |                    |                        |             !              |    | revert Withdraw_FundsSendFailure()    !
          //                       |                    |                        |             !              |<---'                                       !
          //                       |                    |                        |             !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                    |                        |             !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                     Caller            FeeRecipient            FundsRecipient                ,----+-----.
          //                       ,-.                  ,-.                      ,-.                     |ERC721Drop|
          //                       `-'                  `-'                      `-'                     `----------'
          //                       /|\\                  /|\\                      /|\\
          //                        |                    |                        |
          //                       / \\                  / \\                      / \\
          /// @notice This withdraws ETH from the contract to the contract owner.
          function withdraw() external nonReentrant {
              address sender = _msgSender();
              // Get fee amount
              uint256 funds = address(this).balance;
              (address payable feeRecipient, uint256 zoraFee) = zoraFeeForAmount(
                  funds
              );
              // Check if withdraw is allowed for sender
              if (
                  !hasRole(DEFAULT_ADMIN_ROLE, sender) &&
                  !hasRole(SALES_MANAGER_ROLE, sender) &&
                  sender != feeRecipient &&
                  sender != config.fundsRecipient
              ) {
                  revert Access_WithdrawNotAllowed();
              }
              // Payout ZORA fee
              if (zoraFee > 0) {
                  (bool successFee, ) = feeRecipient.call{
                      value: zoraFee,
                      gas: FUNDS_SEND_GAS_LIMIT
                  }("");
                  if (!successFee) {
                      revert Withdraw_FundsSendFailure();
                  }
                  funds -= zoraFee;
              }
              // Payout recipient
              (bool successFunds, ) = config.fundsRecipient.call{
                  value: funds,
                  gas: FUNDS_SEND_GAS_LIMIT
              }("");
              if (!successFunds) {
                  revert Withdraw_FundsSendFailure();
              }
              // Emit event for indexing
              emit FundsWithdrawn(
                  _msgSender(),
                  config.fundsRecipient,
                  funds,
                  feeRecipient,
                  zoraFee
              );
          }
          //                       ,-.
          //                       `-'
          //                       /|\\
          //                        |                             ,----------.
          //                       / \\                            |ERC721Drop|
          //                     Caller                           `----+-----'
          //                       |       finalizeOpenEdition()       |
          //                       | ---------------------------------->
          //                       |                                   |
          //                       |                                   |
          //          _________________________________________________________________
          //          ! ALT  /  caller is not admin or SALES_MANAGER_ROLE?             !
          //          !_____/      |                                   |               !
          //          !            | revert Access_MissingRoleOrAdmin()|               !
          //          !            | <----------------------------------               !
          //          !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //          !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |
          //                       |                    _______________________________________________________________________
          //                       |                    ! ALT  /  drop is not an open edition?                                 !
          //                       |                    !_____/        |                                                       !
          //                       |                    !              |----.                                                  !
          //                       |                    !              |    | revert Admin_UnableToFinalizeNotOpenEdition()    !
          //                       |                    !              |<---'                                                  !
          //                       |                    !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                    !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
          //                       |                                   |
          //                       |                                   |----.
          //                       |                                   |    | set config edition size
          //                       |                                   |<---'
          //                       |                                   |
          //                       |                                   |----.
          //                       |                                   |    | emit OpenMintFinalized()
          //                       |                                   |<---'
          //                     Caller                           ,----+-----.
          //                       ,-.                            |ERC721Drop|
          //                       `-'                            `----------'
          //                       /|\\
          //                        |
          //                       / \\
          /// @notice Admin function to finalize and open edition sale
          function finalizeOpenEdition()
              external
              onlyRoleOrAdmin(SALES_MANAGER_ROLE)
          {
              if (config.editionSize != type(uint64).max) {
                  revert Admin_UnableToFinalizeNotOpenEdition();
              }
              config.editionSize = uint64(_totalMinted());
              emit OpenMintFinalized(_msgSender(), config.editionSize);
          }
          /**
           *** ---------------------------------- ***
           ***                                    ***
           ***      GENERAL GETTER FUNCTIONS      ***
           ***                                    ***
           *** ---------------------------------- ***
           ***/
          /// @notice Simple override for owner interface.
          /// @return user owner address
          function owner()
              public
              view
              override(OwnableSkeleton, IERC721Drop)
              returns (address)
          {
              return super.owner();
          }
          /// @notice Contract URI Getter, proxies to metadataRenderer
          /// @return Contract URI
          function contractURI() external view returns (string memory) {
              return config.metadataRenderer.contractURI();
          }
          /// @notice Getter for metadataRenderer contract
          function metadataRenderer() external view returns (IMetadataRenderer) {
              return IMetadataRenderer(config.metadataRenderer);
          }
          /// @notice Token URI Getter, proxies to metadataRenderer
          /// @param tokenId id of token to get URI for
          /// @return Token URI
          function tokenURI(uint256 tokenId)
              public
              view
              override
              returns (string memory)
          {
              if (!_exists(tokenId)) {
                  revert IERC721AUpgradeable.URIQueryForNonexistentToken();
              }
              return config.metadataRenderer.tokenURI(tokenId);
          }
          /// @notice ERC165 supports interface
          /// @param interfaceId interface id to check if supported
          function supportsInterface(bytes4 interfaceId)
              public
              view
              override(
                  IERC165Upgradeable,
                  ERC721AUpgradeable,
                  AccessControlUpgradeable
              )
              returns (bool)
          {
              return
                  super.supportsInterface(interfaceId) ||
                  type(IOwnable).interfaceId == interfaceId ||
                  type(IERC2981Upgradeable).interfaceId == interfaceId ||
                  type(IERC721Drop).interfaceId == interfaceId;
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      import {IMetadataRenderer} from "../interfaces/IMetadataRenderer.sol";
      /**
       ________   _____   ____    ______      ____
      /\\_____  \\ /\\  __`\\/\\  _`\\ /\\  _  \\    /\\  _`\\
      \\/____//'/'\\ \\ \\/\\ \\ \\ \\L\\ \\ \\ \\L\\ \\   \\ \\ \\/\\ \\  _ __   ___   _____     ____
           //'/'  \\ \\ \\ \\ \\ \\ ,  /\\ \\  __ \\   \\ \\ \\ \\ \\/\\`'__\\/ __`\\/\\ '__`\\  /',__\\
          //'/'___ \\ \\ \\_\\ \\ \\ \\\\ \\\\ \\ \\/\\ \\   \\ \\ \\_\\ \\ \\ \\//\\ \\L\\ \\ \\ \\L\\ \\/\\__, `\\
          /\\_______\\\\ \\_____\\ \\_\\ \\_\\ \\_\\ \\_\\   \\ \\____/\\ \\_\\\\ \\____/\\ \\ ,__/\\/\\____/
          \\/_______/ \\/_____/\\/_/\\/ /\\/_/\\/_/    \\/___/  \\/_/ \\/___/  \\ \\ \\/  \\/___/
                                                                       \\ \\_\\
                                                                        \\/_/
      */
      /// @notice Interface for ZORA Drops contract
      interface IERC721Drop {
          // Access errors
          /// @notice Only admin can access this function
          error Access_OnlyAdmin();
          /// @notice Missing the given role or admin access
          error Access_MissingRoleOrAdmin(bytes32 role);
          /// @notice Withdraw is not allowed by this user
          error Access_WithdrawNotAllowed();
          /// @notice Cannot withdraw funds due to ETH send failure.
          error Withdraw_FundsSendFailure();
          /// @notice Thrown when the operator for the contract is not allowed
          /// @dev Used when strict enforcement of marketplaces for creator royalties is desired.
          error OperatorNotAllowed(address operator);
          /// @notice Thrown when there is no active market filter DAO address supported for the current chain
          /// @dev Used for enabling and disabling filter for the given chain.
          error MarketFilterDAOAddressNotSupportedForChain();
          /// @notice Used when the operator filter registry external call fails
          /// @dev Used for bubbling error up to clients. 
          error RemoteOperatorFilterRegistryCallFailed();
          // Sale/Purchase errors
          /// @notice Sale is inactive
          error Sale_Inactive();
          /// @notice Presale is inactive
          error Presale_Inactive();
          /// @notice Presale merkle root is invalid
          error Presale_MerkleNotApproved();
          /// @notice Wrong price for purchase
          error Purchase_WrongPrice(uint256 correctPrice);
          /// @notice NFT sold out
          error Mint_SoldOut();
          /// @notice Too many purchase for address
          error Purchase_TooManyForAddress();
          /// @notice Too many presale for address
          error Presale_TooManyForAddress();
          // Admin errors
          /// @notice Royalty percentage too high
          error Setup_RoyaltyPercentageTooHigh(uint16 maxRoyaltyBPS);
          /// @notice Invalid admin upgrade address
          error Admin_InvalidUpgradeAddress(address proposedAddress);
          /// @notice Unable to finalize an edition not marked as open (size set to uint64_max_value)
          error Admin_UnableToFinalizeNotOpenEdition();
          /// @notice Event emitted for each sale
          /// @param to address sale was made to
          /// @param quantity quantity of the minted nfts
          /// @param pricePerToken price for each token
          /// @param firstPurchasedTokenId first purchased token ID (to get range add to quantity for max)
          event Sale(
              address indexed to,
              uint256 indexed quantity,
              uint256 indexed pricePerToken,
              uint256 firstPurchasedTokenId
          );
          /// @notice Sales configuration has been changed
          /// @dev To access new sales configuration, use getter function.
          /// @param changedBy Changed by user
          event SalesConfigChanged(address indexed changedBy);
          /// @notice Event emitted when the funds recipient is changed
          /// @param newAddress new address for the funds recipient
          /// @param changedBy address that the recipient is changed by
          event FundsRecipientChanged(
              address indexed newAddress,
              address indexed changedBy
          );
          /// @notice Event emitted when the funds are withdrawn from the minting contract
          /// @param withdrawnBy address that issued the withdraw
          /// @param withdrawnTo address that the funds were withdrawn to
          /// @param amount amount that was withdrawn
          /// @param feeRecipient user getting withdraw fee (if any)
          /// @param feeAmount amount of the fee getting sent (if any)
          event FundsWithdrawn(
              address indexed withdrawnBy,
              address indexed withdrawnTo,
              uint256 amount,
              address feeRecipient,
              uint256 feeAmount
          );
          /// @notice Event emitted when an open mint is finalized and further minting is closed forever on the contract.
          /// @param sender address sending close mint
          /// @param numberOfMints number of mints the contract is finalized at
          event OpenMintFinalized(address indexed sender, uint256 numberOfMints);
          /// @notice Event emitted when metadata renderer is updated.
          /// @param sender address of the updater
          /// @param renderer new metadata renderer address
          event UpdatedMetadataRenderer(address sender, IMetadataRenderer renderer);
          /// @notice General configuration for NFT Minting and bookkeeping
          struct Configuration {
              /// @dev Metadata renderer (uint160)
              IMetadataRenderer metadataRenderer;
              /// @dev Total size of edition that can be minted (uint160+64 = 224)
              uint64 editionSize;
              /// @dev Royalty amount in bps (uint224+16 = 240)
              uint16 royaltyBPS;
              /// @dev Funds recipient for sale (new slot, uint160)
              address payable fundsRecipient;
          }
          /// @notice Sales states and configuration
          /// @dev Uses 3 storage slots
          struct SalesConfiguration {
              /// @dev Public sale price (max ether value > 1000 ether with this value)
              uint104 publicSalePrice;
              /// @notice Purchase mint limit per address (if set to 0 === unlimited mints)
              /// @dev Max purchase number per txn (90+32 = 122)
              uint32 maxSalePurchasePerAddress;
              /// @dev uint64 type allows for dates into 292 billion years
              /// @notice Public sale start timestamp (136+64 = 186)
              uint64 publicSaleStart;
              /// @notice Public sale end timestamp (186+64 = 250)
              uint64 publicSaleEnd;
              /// @notice Presale start timestamp
              /// @dev new storage slot
              uint64 presaleStart;
              /// @notice Presale end timestamp
              uint64 presaleEnd;
              /// @notice Presale merkle root
              bytes32 presaleMerkleRoot;
          }
          /// @notice Return value for sales details to use with front-ends
          struct SaleDetails {
              // Synthesized status variables for sale and presale
              bool publicSaleActive;
              bool presaleActive;
              // Price for public sale
              uint256 publicSalePrice;
              // Timed sale actions for public sale
              uint64 publicSaleStart;
              uint64 publicSaleEnd;
              // Timed sale actions for presale
              uint64 presaleStart;
              uint64 presaleEnd;
              // Merkle root (includes address, quantity, and price data for each entry)
              bytes32 presaleMerkleRoot;
              // Limit public sale to a specific number of mints per wallet
              uint256 maxSalePurchasePerAddress;
              // Information about the rest of the supply
              // Total that have been minted
              uint256 totalMinted;
              // The total supply available
              uint256 maxSupply;
          }
          /// @notice Return type of specific mint counts and details per address
          struct AddressMintDetails {
              /// Number of total mints from the given address
              uint256 totalMints;
              /// Number of presale mints from the given address
              uint256 presaleMints;
              /// Number of public mints from the given address
              uint256 publicMints;
          }
          /// @notice External purchase function (payable in eth)
          /// @param quantity to purchase
          /// @return first minted token ID
          function purchase(uint256 quantity) external payable returns (uint256);
          /// @notice External purchase presale function (takes a merkle proof and matches to root) (payable in eth)
          /// @param quantity to purchase
          /// @param maxQuantity can purchase (verified by merkle root)
          /// @param pricePerToken price per token allowed (verified by merkle root)
          /// @param merkleProof input for merkle proof leaf verified by merkle root
          /// @return first minted token ID
          function purchasePresale(
              uint256 quantity,
              uint256 maxQuantity,
              uint256 pricePerToken,
              bytes32[] memory merkleProof
          ) external payable returns (uint256);
          /// @notice Function to return the global sales details for the given drop
          function saleDetails() external view returns (SaleDetails memory);
          /// @notice Function to return the specific sales details for a given address
          /// @param minter address for minter to return mint information for
          function mintedPerAddress(address minter)
              external
              view
              returns (AddressMintDetails memory);
          /// @notice This is the opensea/public owner setting that can be set by the contract admin
          function owner() external view returns (address);
          /// @notice Update the metadata renderer
          /// @param newRenderer new address for renderer
          /// @param setupRenderer data to call to bootstrap data for the new renderer (optional)
          function setMetadataRenderer(
              IMetadataRenderer newRenderer,
              bytes memory setupRenderer
          ) external;
          /// @notice This is an admin mint function to mint a quantity to a specific address
          /// @param to address to mint to
          /// @param quantity quantity to mint
          /// @return the id of the first minted NFT
          function adminMint(address to, uint256 quantity) external returns (uint256);
          /// @notice This is an admin mint function to mint a single nft each to a list of addresses
          /// @param to list of addresses to mint an NFT each to
          /// @return the id of the first minted NFT
          function adminMintAirdrop(address[] memory to) external returns (uint256);
          /// @dev Getter for admin role associated with the contract to handle metadata
          /// @return boolean if address is admin
          function isAdmin(address user) external view returns (bool);
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      interface IFactoryUpgradeGate {
        function isValidUpgradePath(address _newImpl, address _currentImpl) external returns (bool);
        function registerNewUpgradePath(address _newImpl, address[] calldata _supportedPrevImpls) external;
        function unregisterUpgradePath(address _newImpl, address _prevImpl) external;
      }// SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      interface IMetadataRenderer {
          function tokenURI(uint256) external view returns (string memory);
          function contractURI() external view returns (string memory);
          function initializeWithData(bytes memory initData) external;
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      interface IOperatorFilterRegistry {
          function isOperatorAllowed(address registrant, address operator) external view returns (bool);
          function register(address registrant) external;
          function registerAndSubscribe(address registrant, address subscription) external;
          function registerAndCopyEntries(address registrant, address registrantToCopy) external;
          function updateOperator(address registrant, address operator, bool filtered) external;
          function updateOperators(address registrant, address[] calldata operators, bool filtered) external;
          function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;
          function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;
          function subscribe(address registrant, address registrantToSubscribe) external;
          function unsubscribe(address registrant, bool copyExistingEntries) external;
          function subscriptionOf(address addr) external returns (address registrant);
          function subscribers(address registrant) external returns (address[] memory);
          function subscriberAt(address registrant, uint256 index) external returns (address);
          function copyEntriesOf(address registrant, address registrantToCopy) external;
          function isOperatorFiltered(address registrant, address operator) external returns (bool);
          function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);
          function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);
          function filteredOperators(address addr) external returns (address[] memory);
          function filteredCodeHashes(address addr) external returns (bytes32[] memory);
          function filteredOperatorAt(address registrant, uint256 index) external returns (address);
          function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);
          function isRegistered(address addr) external returns (bool);
          function codeHashOf(address addr) external returns (bytes32);
          function unregister(address registrant) external;
      }// SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      /**
       * @dev Contract module which provides a basic access control mechanism, where
       * there is an account (an owner) that can be granted exclusive access to
       * specific functions.
       *
       * This ownership interface matches OZ's ownable interface.
       *
       */
      interface IOwnable {
          error ONLY_OWNER();
          error ONLY_PENDING_OWNER();
          event OwnershipTransferred(
              address indexed previousOwner,
              address indexed newOwner
          );
          event OwnerPending(
              address indexed previousOwner,
              address indexed potentialNewOwner
          );
          event OwnerCanceled(
              address indexed previousOwner,
              address indexed potentialNewOwner
          );
          /**
           * @dev Returns the address of the current owner.
           */
          function owner() external view returns (address);
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      interface IZoraFeeManager {
          function getZORAWithdrawFeesBPS(address sender) external returns (address payable, uint256);
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      import {IERC721Drop} from "../interfaces/IERC721Drop.sol";
      contract ERC721DropStorageV1 {
          /// @notice Configuration for NFT minting contract storage
          IERC721Drop.Configuration public config;
          /// @notice Sales configuration
          IERC721Drop.SalesConfiguration public salesConfig;
          /// @dev Mapping for presale mint counts by address to allow public mint limit
          mapping(address => uint256) public presaleMintsByAddress;
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      /**
       * @notice This allows this contract to receive native currency funds from other contracts
       * Uses event logging for UI reasons.
       */
      contract FundsReceiver {
          event FundsReceived(address indexed source, uint256 amount);
          receive() external payable {
              emit FundsReceived(msg.sender, msg.value);
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      import {IOwnable} from "../interfaces/IOwnable.sol";
      /**
       * @dev Contract module which provides a basic access control mechanism, where
       * there is an account (an owner) that can be granted exclusive access to
       * specific functions.
       *
       * This ownership interface matches OZ's ownable interface.
       */
      contract OwnableSkeleton is IOwnable {
          address private _owner;
          /**
           * @dev Returns the address of the current owner.
           */
          function owner() public view virtual returns (address) {
              return _owner;
          }
          function _setOwner(address newAddress) internal {
              emit OwnershipTransferred(_owner, newAddress);
              _owner = newAddress;
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.10;
      contract Version {
        uint32 private immutable __version;
        /// @notice The version of the contract
        /// @return The version ID of this contract implementation
        function contractVersion() external view returns (uint32) {
            return __version;
        }
        constructor(uint32 version) {
          __version = version;
        }
      }

      File 3 of 3: OperatorFilterRegistry
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
      pragma solidity ^0.8.0;
      import "../utils/Context.sol";
      /**
       * @dev Contract module which provides a basic access control mechanism, where
       * there is an account (an owner) that can be granted exclusive access to
       * specific functions.
       *
       * By default, the owner account will be the one that deploys the contract. This
       * can later be changed with {transferOwnership}.
       *
       * This module is used through inheritance. It will make available the modifier
       * `onlyOwner`, which can be applied to your functions to restrict their use to
       * the owner.
       */
      abstract contract Ownable is Context {
          address private _owner;
          event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
          /**
           * @dev Initializes the contract setting the deployer as the initial owner.
           */
          constructor() {
              _transferOwnership(_msgSender());
          }
          /**
           * @dev Throws if called by any account other than the owner.
           */
          modifier onlyOwner() {
              _checkOwner();
              _;
          }
          /**
           * @dev Returns the address of the current owner.
           */
          function owner() public view virtual returns (address) {
              return _owner;
          }
          /**
           * @dev Throws if the sender is not the owner.
           */
          function _checkOwner() internal view virtual {
              require(owner() == _msgSender(), "Ownable: caller is not the owner");
          }
          /**
           * @dev Leaves the contract without owner. It will not be possible to call
           * `onlyOwner` functions anymore. Can only be called by the current owner.
           *
           * NOTE: Renouncing ownership will leave the contract without an owner,
           * thereby removing any functionality that is only available to the owner.
           */
          function renounceOwnership() public virtual onlyOwner {
              _transferOwnership(address(0));
          }
          /**
           * @dev Transfers ownership of the contract to a new account (`newOwner`).
           * Can only be called by the current owner.
           */
          function transferOwnership(address newOwner) public virtual onlyOwner {
              require(newOwner != address(0), "Ownable: new owner is the zero address");
              _transferOwnership(newOwner);
          }
          /**
           * @dev Transfers ownership of the contract to a new account (`newOwner`).
           * Internal function without access restriction.
           */
          function _transferOwnership(address newOwner) internal virtual {
              address oldOwner = _owner;
              _owner = newOwner;
              emit OwnershipTransferred(oldOwner, newOwner);
          }
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
      pragma solidity ^0.8.0;
      /**
       * @dev Provides information about the current execution context, including the
       * sender of the transaction and its data. While these are generally available
       * via msg.sender and msg.data, they should not be accessed in such a direct
       * manner, since when dealing with meta-transactions the account sending and
       * paying for execution may not be the actual sender (as far as an application
       * is concerned).
       *
       * This contract is only required for intermediate, library-like contracts.
       */
      abstract contract Context {
          function _msgSender() internal view virtual returns (address) {
              return msg.sender;
          }
          function _msgData() internal view virtual returns (bytes calldata) {
              return msg.data;
          }
      }
      // SPDX-License-Identifier: MIT
      // OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol)
      // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.
      pragma solidity ^0.8.0;
      /**
       * @dev Library for managing
       * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
       * types.
       *
       * Sets have the following properties:
       *
       * - Elements are added, removed, and checked for existence in constant time
       * (O(1)).
       * - Elements are enumerated in O(n). No guarantees are made on the ordering.
       *
       * ```
       * contract Example {
       *     // Add the library methods
       *     using EnumerableSet for EnumerableSet.AddressSet;
       *
       *     // Declare a set state variable
       *     EnumerableSet.AddressSet private mySet;
       * }
       * ```
       *
       * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
       * and `uint256` (`UintSet`) are supported.
       *
       * [WARNING]
       * ====
       * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
       * unusable.
       * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
       *
       * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
       * array of EnumerableSet.
       * ====
       */
      library EnumerableSet {
          // To implement this library for multiple types with as little code
          // repetition as possible, we write it in terms of a generic Set type with
          // bytes32 values.
          // The Set implementation uses private functions, and user-facing
          // implementations (such as AddressSet) are just wrappers around the
          // underlying Set.
          // This means that we can only create new EnumerableSets for types that fit
          // in bytes32.
          struct Set {
              // Storage of set values
              bytes32[] _values;
              // Position of the value in the `values` array, plus 1 because index 0
              // means a value is not in the set.
              mapping(bytes32 => uint256) _indexes;
          }
          /**
           * @dev Add a value to a set. O(1).
           *
           * Returns true if the value was added to the set, that is if it was not
           * already present.
           */
          function _add(Set storage set, bytes32 value) private returns (bool) {
              if (!_contains(set, value)) {
                  set._values.push(value);
                  // The value is stored at length-1, but we add 1 to all indexes
                  // and use 0 as a sentinel value
                  set._indexes[value] = set._values.length;
                  return true;
              } else {
                  return false;
              }
          }
          /**
           * @dev Removes a value from a set. O(1).
           *
           * Returns true if the value was removed from the set, that is if it was
           * present.
           */
          function _remove(Set storage set, bytes32 value) private returns (bool) {
              // We read and store the value's index to prevent multiple reads from the same storage slot
              uint256 valueIndex = set._indexes[value];
              if (valueIndex != 0) {
                  // Equivalent to contains(set, value)
                  // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
                  // the array, and then remove the last element (sometimes called as 'swap and pop').
                  // This modifies the order of the array, as noted in {at}.
                  uint256 toDeleteIndex = valueIndex - 1;
                  uint256 lastIndex = set._values.length - 1;
                  if (lastIndex != toDeleteIndex) {
                      bytes32 lastValue = set._values[lastIndex];
                      // Move the last value to the index where the value to delete is
                      set._values[toDeleteIndex] = lastValue;
                      // Update the index for the moved value
                      set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
                  }
                  // Delete the slot where the moved value was stored
                  set._values.pop();
                  // Delete the index for the deleted slot
                  delete set._indexes[value];
                  return true;
              } else {
                  return false;
              }
          }
          /**
           * @dev Returns true if the value is in the set. O(1).
           */
          function _contains(Set storage set, bytes32 value) private view returns (bool) {
              return set._indexes[value] != 0;
          }
          /**
           * @dev Returns the number of values on the set. O(1).
           */
          function _length(Set storage set) private view returns (uint256) {
              return set._values.length;
          }
          /**
           * @dev Returns the value stored at position `index` in the set. O(1).
           *
           * Note that there are no guarantees on the ordering of values inside the
           * array, and it may change when more values are added or removed.
           *
           * Requirements:
           *
           * - `index` must be strictly less than {length}.
           */
          function _at(Set storage set, uint256 index) private view returns (bytes32) {
              return set._values[index];
          }
          /**
           * @dev Return the entire set in an array
           *
           * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
           * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
           * this function has an unbounded cost, and using it as part of a state-changing function may render the function
           * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
           */
          function _values(Set storage set) private view returns (bytes32[] memory) {
              return set._values;
          }
          // Bytes32Set
          struct Bytes32Set {
              Set _inner;
          }
          /**
           * @dev Add a value to a set. O(1).
           *
           * Returns true if the value was added to the set, that is if it was not
           * already present.
           */
          function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
              return _add(set._inner, value);
          }
          /**
           * @dev Removes a value from a set. O(1).
           *
           * Returns true if the value was removed from the set, that is if it was
           * present.
           */
          function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
              return _remove(set._inner, value);
          }
          /**
           * @dev Returns true if the value is in the set. O(1).
           */
          function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
              return _contains(set._inner, value);
          }
          /**
           * @dev Returns the number of values in the set. O(1).
           */
          function length(Bytes32Set storage set) internal view returns (uint256) {
              return _length(set._inner);
          }
          /**
           * @dev Returns the value stored at position `index` in the set. O(1).
           *
           * Note that there are no guarantees on the ordering of values inside the
           * array, and it may change when more values are added or removed.
           *
           * Requirements:
           *
           * - `index` must be strictly less than {length}.
           */
          function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
              return _at(set._inner, index);
          }
          /**
           * @dev Return the entire set in an array
           *
           * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
           * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
           * this function has an unbounded cost, and using it as part of a state-changing function may render the function
           * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
           */
          function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
              bytes32[] memory store = _values(set._inner);
              bytes32[] memory result;
              /// @solidity memory-safe-assembly
              assembly {
                  result := store
              }
              return result;
          }
          // AddressSet
          struct AddressSet {
              Set _inner;
          }
          /**
           * @dev Add a value to a set. O(1).
           *
           * Returns true if the value was added to the set, that is if it was not
           * already present.
           */
          function add(AddressSet storage set, address value) internal returns (bool) {
              return _add(set._inner, bytes32(uint256(uint160(value))));
          }
          /**
           * @dev Removes a value from a set. O(1).
           *
           * Returns true if the value was removed from the set, that is if it was
           * present.
           */
          function remove(AddressSet storage set, address value) internal returns (bool) {
              return _remove(set._inner, bytes32(uint256(uint160(value))));
          }
          /**
           * @dev Returns true if the value is in the set. O(1).
           */
          function contains(AddressSet storage set, address value) internal view returns (bool) {
              return _contains(set._inner, bytes32(uint256(uint160(value))));
          }
          /**
           * @dev Returns the number of values in the set. O(1).
           */
          function length(AddressSet storage set) internal view returns (uint256) {
              return _length(set._inner);
          }
          /**
           * @dev Returns the value stored at position `index` in the set. O(1).
           *
           * Note that there are no guarantees on the ordering of values inside the
           * array, and it may change when more values are added or removed.
           *
           * Requirements:
           *
           * - `index` must be strictly less than {length}.
           */
          function at(AddressSet storage set, uint256 index) internal view returns (address) {
              return address(uint160(uint256(_at(set._inner, index))));
          }
          /**
           * @dev Return the entire set in an array
           *
           * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
           * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
           * this function has an unbounded cost, and using it as part of a state-changing function may render the function
           * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
           */
          function values(AddressSet storage set) internal view returns (address[] memory) {
              bytes32[] memory store = _values(set._inner);
              address[] memory result;
              /// @solidity memory-safe-assembly
              assembly {
                  result := store
              }
              return result;
          }
          // UintSet
          struct UintSet {
              Set _inner;
          }
          /**
           * @dev Add a value to a set. O(1).
           *
           * Returns true if the value was added to the set, that is if it was not
           * already present.
           */
          function add(UintSet storage set, uint256 value) internal returns (bool) {
              return _add(set._inner, bytes32(value));
          }
          /**
           * @dev Removes a value from a set. O(1).
           *
           * Returns true if the value was removed from the set, that is if it was
           * present.
           */
          function remove(UintSet storage set, uint256 value) internal returns (bool) {
              return _remove(set._inner, bytes32(value));
          }
          /**
           * @dev Returns true if the value is in the set. O(1).
           */
          function contains(UintSet storage set, uint256 value) internal view returns (bool) {
              return _contains(set._inner, bytes32(value));
          }
          /**
           * @dev Returns the number of values in the set. O(1).
           */
          function length(UintSet storage set) internal view returns (uint256) {
              return _length(set._inner);
          }
          /**
           * @dev Returns the value stored at position `index` in the set. O(1).
           *
           * Note that there are no guarantees on the ordering of values inside the
           * array, and it may change when more values are added or removed.
           *
           * Requirements:
           *
           * - `index` must be strictly less than {length}.
           */
          function at(UintSet storage set, uint256 index) internal view returns (uint256) {
              return uint256(_at(set._inner, index));
          }
          /**
           * @dev Return the entire set in an array
           *
           * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
           * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
           * this function has an unbounded cost, and using it as part of a state-changing function may render the function
           * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
           */
          function values(UintSet storage set) internal view returns (uint256[] memory) {
              bytes32[] memory store = _values(set._inner);
              uint256[] memory result;
              /// @solidity memory-safe-assembly
              assembly {
                  result := store
              }
              return result;
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.13;
      import {EnumerableSet} from "openzeppelin-contracts/utils/structs/EnumerableSet.sol";
      interface IOperatorFilterRegistry {
          function isOperatorAllowed(address registrant, address operator) external returns (bool);
          function register(address registrant) external;
          function registerAndSubscribe(address registrant, address subscription) external;
          function registerAndCopyEntries(address registrant, address registrantToCopy) external;
          function updateOperator(address registrant, address operator, bool filtered) external;
          function updateOperators(address registrant, address[] calldata operators, bool filtered) external;
          function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;
          function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;
          function subscribe(address registrant, address registrantToSubscribe) external;
          function unsubscribe(address registrant, bool copyExistingEntries) external;
          function subscriptionOf(address addr) external returns (address registrant);
          function subscribers(address registrant) external returns (address[] memory);
          function subscriberAt(address registrant, uint256 index) external returns (address);
          function copyEntriesOf(address registrant, address registrantToCopy) external;
          function isOperatorFiltered(address registrant, address operator) external returns (bool);
          function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);
          function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);
          function filteredOperators(address addr) external returns (address[] memory);
          function filteredCodeHashes(address addr) external returns (bytes32[] memory);
          function filteredOperatorAt(address registrant, uint256 index) external returns (address);
          function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);
          function isRegistered(address addr) external returns (bool);
          function codeHashOf(address addr) external returns (bytes32);
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.13;
      import {IOperatorFilterRegistry} from "./IOperatorFilterRegistry.sol";
      import {Ownable} from "openzeppelin-contracts/access/Ownable.sol";
      import {EnumerableSet} from "openzeppelin-contracts/utils/structs/EnumerableSet.sol";
      import {OperatorFilterRegistryErrorsAndEvents} from "./OperatorFilterRegistryErrorsAndEvents.sol";
      /**
       * @title  OperatorFilterRegistry
       * @notice Borrows heavily from the QQL BlacklistOperatorFilter contract:
       *         https://github.com/qql-art/contracts/blob/main/contracts/BlacklistOperatorFilter.sol
       * @notice This contracts allows tokens or token owners to register specific addresses or codeHashes that may be
       * *       restricted according to the isOperatorAllowed function.
       */
      contract OperatorFilterRegistry is IOperatorFilterRegistry, OperatorFilterRegistryErrorsAndEvents {
          using EnumerableSet for EnumerableSet.AddressSet;
          using EnumerableSet for EnumerableSet.Bytes32Set;
          /// @dev initialized accounts have a nonzero codehash (see https://eips.ethereum.org/EIPS/eip-1052)
          /// Note that this will also be a smart contract's codehash when making calls from its constructor.
          bytes32 constant EOA_CODEHASH = keccak256("");
          mapping(address => EnumerableSet.AddressSet) private _filteredOperators;
          mapping(address => EnumerableSet.Bytes32Set) private _filteredCodeHashes;
          mapping(address => address) private _registrations;
          mapping(address => EnumerableSet.AddressSet) private _subscribers;
          /**
           * @notice restricts method caller to the address or EIP-173 "owner()"
           */
          modifier onlyAddressOrOwner(address addr) {
              if (msg.sender != addr) {
                  try Ownable(addr).owner() returns (address owner) {
                      if (msg.sender != owner) {
                          revert OnlyAddressOrOwner();
                      }
                  } catch (bytes memory reason) {
                      if (reason.length == 0) {
                          revert NotOwnable();
                      } else {
                          /// @solidity memory-safe-assembly
                          assembly {
                              revert(add(32, reason), mload(reason))
                          }
                      }
                  }
              }
              _;
          }
          /**
           * @notice Returns true if operator is not filtered for a given token, either by address or codeHash. Also returns
           *         true if supplied registrant address is not registered.
           */
          function isOperatorAllowed(address registrant, address operator) external view returns (bool) {
              address registration = _registrations[registrant];
              if (registration != address(0)) {
                  EnumerableSet.AddressSet storage filteredOperatorsRef;
                  EnumerableSet.Bytes32Set storage filteredCodeHashesRef;
                  filteredOperatorsRef = _filteredOperators[registration];
                  filteredCodeHashesRef = _filteredCodeHashes[registration];
                  if (filteredOperatorsRef.contains(operator)) {
                      revert AddressFiltered(operator);
                  }
                  if (operator.code.length > 0) {
                      bytes32 codeHash = operator.codehash;
                      if (filteredCodeHashesRef.contains(codeHash)) {
                          revert CodeHashFiltered(operator, codeHash);
                      }
                  }
              }
              return true;
          }
          //////////////////
          // AUTH METHODS //
          //////////////////
          /**
           * @notice Registers an address with the registry. May be called by address itself or by EIP-173 owner.
           */
          function register(address registrant) external onlyAddressOrOwner(registrant) {
              if (_registrations[registrant] != address(0)) {
                  revert AlreadyRegistered();
              }
              _registrations[registrant] = registrant;
              emit RegistrationUpdated(registrant, true);
          }
          /**
           * @notice Unregisters an address with the registry and removes its subscription. May be called by address itself or by EIP-173 owner.
           *         Note that this does not remove any filtered addresses or codeHashes.
           *         Also note that any subscriptions to this registrant will still be active and follow the existing filtered addresses and codehashes.
           */
          function unregister(address registrant) external onlyAddressOrOwner(registrant) {
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration != registrant) {
                  _subscribers[registration].remove(registrant);
                  emit SubscriptionUpdated(registrant, registration, false);
              }
              _registrations[registrant] = address(0);
              emit RegistrationUpdated(registrant, false);
          }
          /**
           * @notice Registers an address with the registry and "subscribes" to another address's filtered operators and codeHashes.
           */
          function registerAndSubscribe(address registrant, address subscription) external onlyAddressOrOwner(registrant) {
              address registration = _registrations[registrant];
              if (registration != address(0)) {
                  revert AlreadyRegistered();
              }
              if (registrant == subscription) {
                  revert CannotSubscribeToSelf();
              }
              address subscriptionRegistration = _registrations[subscription];
              if (subscriptionRegistration == address(0)) {
                  revert NotRegistered(subscription);
              }
              if (subscriptionRegistration != subscription) {
                  revert CannotSubscribeToRegistrantWithSubscription(subscription);
              }
              _registrations[registrant] = subscription;
              _subscribers[subscription].add(registrant);
              emit RegistrationUpdated(registrant, true);
              emit SubscriptionUpdated(registrant, subscription, true);
          }
          /**
           * @notice Registers an address with the registry and copies the filtered operators and codeHashes from another
           *         address without subscribing.
           */
          function registerAndCopyEntries(address registrant, address registrantToCopy)
              external
              onlyAddressOrOwner(registrant)
          {
              if (registrantToCopy == registrant) {
                  revert CannotCopyFromSelf();
              }
              address registration = _registrations[registrant];
              if (registration != address(0)) {
                  revert AlreadyRegistered();
              }
              address registrantRegistration = _registrations[registrantToCopy];
              if (registrantRegistration == address(0)) {
                  revert NotRegistered(registrantToCopy);
              }
              _registrations[registrant] = registrant;
              emit RegistrationUpdated(registrant, true);
              _copyEntries(registrant, registrantToCopy);
          }
          /**
           * @notice Update an operator address for a registered address - when filtered is true, the operator is filtered.
           */
          function updateOperator(address registrant, address operator, bool filtered)
              external
              onlyAddressOrOwner(registrant)
          {
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration != registrant) {
                  revert CannotUpdateWhileSubscribed(registration);
              }
              EnumerableSet.AddressSet storage filteredOperatorsRef = _filteredOperators[registrant];
              if (!filtered) {
                  bool removed = filteredOperatorsRef.remove(operator);
                  if (!removed) {
                      revert AddressNotFiltered(operator);
                  }
              } else {
                  bool added = filteredOperatorsRef.add(operator);
                  if (!added) {
                      revert AddressAlreadyFiltered(operator);
                  }
              }
              emit OperatorUpdated(registrant, operator, filtered);
          }
          /**
           * @notice Update a codeHash for a registered address - when filtered is true, the codeHash is filtered.
           */
          function updateCodeHash(address registrant, bytes32 codeHash, bool filtered)
              external
              onlyAddressOrOwner(registrant)
          {
              if (codeHash == EOA_CODEHASH) {
                  revert CannotFilterEOAs();
              }
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration != registrant) {
                  revert CannotUpdateWhileSubscribed(registration);
              }
              EnumerableSet.Bytes32Set storage filteredCodeHashesRef = _filteredCodeHashes[registrant];
              if (!filtered) {
                  bool removed = filteredCodeHashesRef.remove(codeHash);
                  if (!removed) {
                      revert CodeHashNotFiltered(codeHash);
                  }
              } else {
                  bool added = filteredCodeHashesRef.add(codeHash);
                  if (!added) {
                      revert CodeHashAlreadyFiltered(codeHash);
                  }
              }
              emit CodeHashUpdated(registrant, codeHash, filtered);
          }
          /**
           * @notice Update multiple operators for a registered address - when filtered is true, the operators will be filtered. Reverts on duplicates.
           */
          function updateOperators(address registrant, address[] calldata operators, bool filtered)
              external
              onlyAddressOrOwner(registrant)
          {
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration != registrant) {
                  revert CannotUpdateWhileSubscribed(registration);
              }
              EnumerableSet.AddressSet storage filteredOperatorsRef = _filteredOperators[registrant];
              uint256 operatorsLength = operators.length;
              unchecked {
                  if (!filtered) {
                      for (uint256 i = 0; i < operatorsLength; ++i) {
                          address operator = operators[i];
                          bool removed = filteredOperatorsRef.remove(operator);
                          if (!removed) {
                              revert AddressNotFiltered(operator);
                          }
                      }
                  } else {
                      for (uint256 i = 0; i < operatorsLength; ++i) {
                          address operator = operators[i];
                          bool added = filteredOperatorsRef.add(operator);
                          if (!added) {
                              revert AddressAlreadyFiltered(operator);
                          }
                      }
                  }
              }
              emit OperatorsUpdated(registrant, operators, filtered);
          }
          /**
           * @notice Update multiple codeHashes for a registered address - when filtered is true, the codeHashes will be filtered. Reverts on duplicates.
           */
          function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered)
              external
              onlyAddressOrOwner(registrant)
          {
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration != registrant) {
                  revert CannotUpdateWhileSubscribed(registration);
              }
              EnumerableSet.Bytes32Set storage filteredCodeHashesRef = _filteredCodeHashes[registrant];
              uint256 codeHashesLength = codeHashes.length;
              unchecked {
                  if (!filtered) {
                      for (uint256 i = 0; i < codeHashesLength; ++i) {
                          bytes32 codeHash = codeHashes[i];
                          bool removed = filteredCodeHashesRef.remove(codeHash);
                          if (!removed) {
                              revert CodeHashNotFiltered(codeHash);
                          }
                      }
                  } else {
                      for (uint256 i = 0; i < codeHashesLength; ++i) {
                          bytes32 codeHash = codeHashes[i];
                          if (codeHash == EOA_CODEHASH) {
                              revert CannotFilterEOAs();
                          }
                          bool added = filteredCodeHashesRef.add(codeHash);
                          if (!added) {
                              revert CodeHashAlreadyFiltered(codeHash);
                          }
                      }
                  }
              }
              emit CodeHashesUpdated(registrant, codeHashes, filtered);
          }
          /**
           * @notice Subscribe an address to another registrant's filtered operators and codeHashes. Will remove previous
           *         subscription if present.
           *         Note that accounts with subscriptions may go on to subscribe to other accounts - in this case,
           *         subscriptions will not be forwarded. Instead the former subscription's existing entries will still be
           *         used.
           */
          function subscribe(address registrant, address newSubscription) external onlyAddressOrOwner(registrant) {
              if (registrant == newSubscription) {
                  revert CannotSubscribeToSelf();
              }
              if (newSubscription == address(0)) {
                  revert CannotSubscribeToZeroAddress();
              }
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration == newSubscription) {
                  revert AlreadySubscribed(newSubscription);
              }
              address newSubscriptionRegistration = _registrations[newSubscription];
              if (newSubscriptionRegistration == address(0)) {
                  revert NotRegistered(newSubscription);
              }
              if (newSubscriptionRegistration != newSubscription) {
                  revert CannotSubscribeToRegistrantWithSubscription(newSubscription);
              }
              if (registration != registrant) {
                  _subscribers[registration].remove(registrant);
                  emit SubscriptionUpdated(registrant, registration, false);
              }
              _registrations[registrant] = newSubscription;
              _subscribers[newSubscription].add(registrant);
              emit SubscriptionUpdated(registrant, newSubscription, true);
          }
          /**
           * @notice Unsubscribe an address from its current subscribed registrant, and optionally copy its filtered operators and codeHashes.
           */
          function unsubscribe(address registrant, bool copyExistingEntries) external onlyAddressOrOwner(registrant) {
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration == registrant) {
                  revert NotSubscribed();
              }
              _subscribers[registration].remove(registrant);
              _registrations[registrant] = registrant;
              emit SubscriptionUpdated(registrant, registration, false);
              if (copyExistingEntries) {
                  _copyEntries(registrant, registration);
              }
          }
          /**
           * @notice Copy filtered operators and codeHashes from a different registrantToCopy to addr.
           */
          function copyEntriesOf(address registrant, address registrantToCopy) external onlyAddressOrOwner(registrant) {
              if (registrant == registrantToCopy) {
                  revert CannotCopyFromSelf();
              }
              address registration = _registrations[registrant];
              if (registration == address(0)) {
                  revert NotRegistered(registrant);
              }
              if (registration != registrant) {
                  revert CannotUpdateWhileSubscribed(registration);
              }
              address registrantRegistration = _registrations[registrantToCopy];
              if (registrantRegistration == address(0)) {
                  revert NotRegistered(registrantToCopy);
              }
              _copyEntries(registrant, registrantToCopy);
          }
          /// @dev helper to copy entries from registrantToCopy to registrant and emit events
          function _copyEntries(address registrant, address registrantToCopy) private {
              EnumerableSet.AddressSet storage filteredOperatorsRef = _filteredOperators[registrantToCopy];
              EnumerableSet.Bytes32Set storage filteredCodeHashesRef = _filteredCodeHashes[registrantToCopy];
              uint256 filteredOperatorsLength = filteredOperatorsRef.length();
              uint256 filteredCodeHashesLength = filteredCodeHashesRef.length();
              unchecked {
                  for (uint256 i = 0; i < filteredOperatorsLength; ++i) {
                      address operator = filteredOperatorsRef.at(i);
                      bool added = _filteredOperators[registrant].add(operator);
                      if (added) {
                          emit OperatorUpdated(registrant, operator, true);
                      }
                  }
                  for (uint256 i = 0; i < filteredCodeHashesLength; ++i) {
                      bytes32 codehash = filteredCodeHashesRef.at(i);
                      bool added = _filteredCodeHashes[registrant].add(codehash);
                      if (added) {
                          emit CodeHashUpdated(registrant, codehash, true);
                      }
                  }
              }
          }
          //////////////////
          // VIEW METHODS //
          //////////////////
          /**
           * @notice Get the subscription address of a given registrant, if any.
           */
          function subscriptionOf(address registrant) external view returns (address subscription) {
              subscription = _registrations[registrant];
              if (subscription == address(0)) {
                  revert NotRegistered(registrant);
              } else if (subscription == registrant) {
                  subscription = address(0);
              }
          }
          /**
           * @notice Get the set of addresses subscribed to a given registrant.
           *         Note that order is not guaranteed as updates are made.
           */
          function subscribers(address registrant) external view returns (address[] memory) {
              return _subscribers[registrant].values();
          }
          /**
           * @notice Get the subscriber at a given index in the set of addresses subscribed to a given registrant.
           *         Note that order is not guaranteed as updates are made.
           */
          function subscriberAt(address registrant, uint256 index) external view returns (address) {
              return _subscribers[registrant].at(index);
          }
          /**
           * @notice Returns true if operator is filtered by a given address or its subscription.
           */
          function isOperatorFiltered(address registrant, address operator) external view returns (bool) {
              address registration = _registrations[registrant];
              if (registration != registrant) {
                  return _filteredOperators[registration].contains(operator);
              }
              return _filteredOperators[registrant].contains(operator);
          }
          /**
           * @notice Returns true if a codeHash is filtered by a given address or its subscription.
           */
          function isCodeHashFiltered(address registrant, bytes32 codeHash) external view returns (bool) {
              address registration = _registrations[registrant];
              if (registration != registrant) {
                  return _filteredCodeHashes[registration].contains(codeHash);
              }
              return _filteredCodeHashes[registrant].contains(codeHash);
          }
          /**
           * @notice Returns true if the hash of an address's code is filtered by a given address or its subscription.
           */
          function isCodeHashOfFiltered(address registrant, address operatorWithCode) external view returns (bool) {
              bytes32 codeHash = operatorWithCode.codehash;
              address registration = _registrations[registrant];
              if (registration != registrant) {
                  return _filteredCodeHashes[registration].contains(codeHash);
              }
              return _filteredCodeHashes[registrant].contains(codeHash);
          }
          /**
           * @notice Returns true if an address has registered
           */
          function isRegistered(address registrant) external view returns (bool) {
              return _registrations[registrant] != address(0);
          }
          /**
           * @notice Returns a list of filtered operators for a given address or its subscription.
           */
          function filteredOperators(address registrant) external view returns (address[] memory) {
              address registration = _registrations[registrant];
              if (registration != registrant) {
                  return _filteredOperators[registration].values();
              }
              return _filteredOperators[registrant].values();
          }
          /**
           * @notice Returns the set of filtered codeHashes for a given address or its subscription.
           *         Note that order is not guaranteed as updates are made.
           */
          function filteredCodeHashes(address registrant) external view returns (bytes32[] memory) {
              address registration = _registrations[registrant];
              if (registration != registrant) {
                  return _filteredCodeHashes[registration].values();
              }
              return _filteredCodeHashes[registrant].values();
          }
          /**
           * @notice Returns the filtered operator at the given index of the set of filtered operators for a given address or
           *         its subscription.
           *         Note that order is not guaranteed as updates are made.
           */
          function filteredOperatorAt(address registrant, uint256 index) external view returns (address) {
              address registration = _registrations[registrant];
              if (registration != registrant) {
                  return _filteredOperators[registration].at(index);
              }
              return _filteredOperators[registrant].at(index);
          }
          /**
           * @notice Returns the filtered codeHash at the given index of the list of filtered codeHashes for a given address or
           *         its subscription.
           *         Note that order is not guaranteed as updates are made.
           */
          function filteredCodeHashAt(address registrant, uint256 index) external view returns (bytes32) {
              address registration = _registrations[registrant];
              if (registration != registrant) {
                  return _filteredCodeHashes[registration].at(index);
              }
              return _filteredCodeHashes[registrant].at(index);
          }
          /// @dev Convenience method to compute the code hash of an arbitrary contract
          function codeHashOf(address a) external view returns (bytes32) {
              return a.codehash;
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.13;
      contract OperatorFilterRegistryErrorsAndEvents {
          error CannotFilterEOAs();
          error AddressAlreadyFiltered(address operator);
          error AddressNotFiltered(address operator);
          error CodeHashAlreadyFiltered(bytes32 codeHash);
          error CodeHashNotFiltered(bytes32 codeHash);
          error OnlyAddressOrOwner();
          error NotRegistered(address registrant);
          error AlreadyRegistered();
          error AlreadySubscribed(address subscription);
          error NotSubscribed();
          error CannotUpdateWhileSubscribed(address subscription);
          error CannotSubscribeToSelf();
          error CannotSubscribeToZeroAddress();
          error NotOwnable();
          error AddressFiltered(address filtered);
          error CodeHashFiltered(address account, bytes32 codeHash);
          error CannotSubscribeToRegistrantWithSubscription(address registrant);
          error CannotCopyFromSelf();
          event RegistrationUpdated(address indexed registrant, bool indexed registered);
          event OperatorUpdated(address indexed registrant, address indexed operator, bool indexed filtered);
          event OperatorsUpdated(address indexed registrant, address[] operators, bool indexed filtered);
          event CodeHashUpdated(address indexed registrant, bytes32 indexed codeHash, bool indexed filtered);
          event CodeHashesUpdated(address indexed registrant, bytes32[] codeHashes, bool indexed filtered);
          event SubscriptionUpdated(address indexed registrant, address indexed subscription, bool indexed subscribed);
      }