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// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.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 AccessControl is Context, IAccessControl, ERC165 {
    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(IAccessControl).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 ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.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.
     *
     * May emit a {RoleGranted} event.
     */
    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.
     *
     * May emit a {RoleRevoked} event.
     */
    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`.
     *
     * May emit a {RoleRevoked} event.
     */
    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.
     *
     * May emit a {RoleGranted} event.
     *
     * [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.
     *
     * May emit a {RoleGranted} event.
     */
    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.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }
}

// 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 IAccessControl {
    /**
     * @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 v4.4.1 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @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 ReentrancyGuard {
    // 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;

    constructor() {
        _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() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
     * @dev Handles the receipt of a single ERC1155 token type. This function is
     * called at the end of a `safeTransferFrom` after the balance has been updated.
     *
     * NOTE: To accept the transfer, this must return
     * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
     * (i.e. 0xf23a6e61, or its own function selector).
     *
     * @param operator The address which initiated the transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param id The ID of the token being transferred
     * @param value The amount of tokens being transferred
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
     */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external returns (bytes4);

    /**
     * @dev Handles the receipt of a multiple ERC1155 token types. This function
     * is called at the end of a `safeBatchTransferFrom` after the balances have
     * been updated.
     *
     * NOTE: To accept the transfer(s), this must return
     * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
     * (i.e. 0xbc197c81, or its own function selector).
     *
     * @param operator The address which initiated the batch transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param ids An array containing ids of each token being transferred (order and length must match values array)
     * @param values An array containing amounts of each token being transferred (order and length must match ids array)
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
     */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/utils/ERC1155Holder.sol)

pragma solidity ^0.8.0;

import "./ERC1155Receiver.sol";

/**
 * Simple implementation of `ERC1155Receiver` that will allow a contract to hold ERC1155 tokens.
 *
 * IMPORTANT: When inheriting this contract, you must include a way to use the received tokens, otherwise they will be
 * stuck.
 *
 * @dev _Available since v3.1._
 */
contract ERC1155Holder is ERC1155Receiver {
    function onERC1155Received(
        address,
        address,
        uint256,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155Received.selector;
    }

    function onERC1155BatchReceived(
        address,
        address,
        uint256[] memory,
        uint256[] memory,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155BatchReceived.selector;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/utils/ERC1155Receiver.sol)

pragma solidity ^0.8.0;

import "../IERC1155Receiver.sol";
import "../../../utils/introspection/ERC165.sol";

/**
 * @dev _Available since v3.1._
 */
abstract contract ERC1155Receiver is ERC165, IERC1155Receiver {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @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`.
     *
     * 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;

    /**
     * @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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * 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 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 the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 IERC721Receiver {
    /**
     * @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/utils/ERC721Holder.sol)

pragma solidity ^0.8.0;

import "../IERC721Receiver.sol";

/**
 * @dev Implementation of the {IERC721Receiver} interface.
 *
 * Accepts all token transfers.
 * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
 */
contract ERC721Holder is IERC721Receiver {
    /**
     * @dev See {IERC721Receiver-onERC721Received}.
     *
     * Always returns `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address,
        address,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC721Received.selector;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-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;

/**
 * @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 v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.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 ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// 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 IERC165 {
    /**
     * @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
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator,
        Rounding rounding
    ) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10**64) {
                value /= 10**64;
                result += 64;
            }
            if (value >= 10**32) {
                value /= 10**32;
                result += 32;
            }
            if (value >= 10**16) {
                value /= 10**16;
                result += 16;
            }
            if (value >= 10**8) {
                value /= 10**8;
                result += 8;
            }
            if (value >= 10**4) {
                value /= 10**4;
                result += 4;
            }
            if (value >= 10**2) {
                value /= 10**2;
                result += 2;
            }
            if (value >= 10**1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @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] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 ^0.8.18;

import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/utils/ERC721Holder.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/token/ERC1155/utils/ERC1155Holder.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import "@openzeppelin/contracts/utils/Address.sol";

import "./interfaces/IFuulFactory.sol";
import "./interfaces/IFuulProject.sol";

contract FuulProject is
    IFuulProject,
    AccessControlEnumerable,
    ERC721Holder,
    ERC1155Holder,
    ReentrancyGuard
{
    using SafeERC20 for IERC20;
    using Address for address payable;

    // Checks if contract is initialized
    bool private initialized;

    // Factory contract address
    address public immutable fuulFactory;

    // Address that will receive client fees (client that created the project)
    address public clientFeeCollector;

    // Roles for allowed addresses to send events through our SDK (not used in the contract)
    bytes32 public constant EVENTS_SIGNER_ROLE =
        keccak256("EVENTS_SIGNER_ROLE");

    // Mapping attribution proofs with already processed
    mapping(bytes32 => bool) public attributionProofs;

    // URI that points to a file with project information (image, name, description, attribution conditions, etc)
    string public projectInfoURI;

    // Timestamp for the last application to remove budget
    uint256 public lastRemovalApplication;

    // Mapping currency with amount
    mapping(address => uint256) public budgets;

    // Mapping owner address to currency to earnings
    mapping(address => mapping(address => uint256)) public availableToClaim;

    // Mapping currency with fees when rewarding NFTs. Using mappings to be able to withdraw after fee currency changes
    mapping(address => uint256) public nftFeeBudget;

    // {FuulFactory} instance
    IFuulFactory private immutable fuulFactoryInstance;

    /**
     * @dev Modifier to check if the project can remove funds. Reverts with an {OutsideRemovalWindow} error.
     */
    modifier canRemove() {
        canRemoveFunds();
        _;
    }

    /**
     * @dev Modifier to check if the uint amount is zero.
     */
    modifier nonZeroAmount(uint256 amount) {
        _nonZeroAmount(amount);
        _;
    }

    /**
     * @dev Internal function for {nonZeroAmount} modifier. Reverts with a {TokenCurrencyNotAccepted} error.
     */
    function _nonZeroAmount(uint256 amount) internal pure {
        if (amount == 0) {
            revert ZeroAmount();
        }
    }

    /*╔═════════════════════════════╗
      ║         CONSTRUCTOR         ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Sets the value for `fuulFactory`.
     * This value is immutable.
     */
    constructor() {
        fuulFactory = _msgSender();

        fuulFactoryInstance = IFuulFactory(fuulFactory);
    }

    /**
     * @dev Initializes the contract when the Factory deploys a new clone.
     *
     * Grants roles for project admin, the address allowed to send events 
     * through the SDK, the URI with the project information and the address 
     * that will receive the client fees.

     */
    function initialize(
        address projectAdmin,
        address projectEventSignerAddress,
        string calldata projectURI,
        address clientCreator
    ) external {
        if (fuulFactory != _msgSender() || initialized) {
            revert Forbidden();
        }

        _setupRole(DEFAULT_ADMIN_ROLE, projectAdmin);

        _setupRole(EVENTS_SIGNER_ROLE, projectEventSignerAddress);

        _setProjectURI(projectURI);

        clientFeeCollector = clientCreator;
        initialized = true;
    }

    /*╔═════════════════════════════╗
      ║        PROJECT INFO         ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Internal function that sets `projectInfoURI` as the information for the project.
     *
     * Requirements:
     *
     * - `projectURI` must not be an empty string.
     */
    function _setProjectURI(string memory projectURI) internal {
        if (bytes(projectURI).length == 0) {
            revert EmptyURI();
        }

        projectInfoURI = projectURI;
    }

    /**
     * @dev Sets `projectInfoURI` as the information for the project.
     *
     * Emits {ProjectInfoUpdated}.
     *
     * Requirements:
     *
     * - Only admins can call this function.
     */
    function setProjectURI(
        string calldata projectURI
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        _setProjectURI(projectURI);
        emit ProjectInfoUpdated(projectURI);
    }

    /*╔═════════════════════════════╗
      ║        DEPOSIT BUDGET       ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Deposits fungible tokens.
     * They can be native or ERC20 tokens.
     *
     * Emits {BudgetDeposited}.
     *
     * Requirements:
     *
     * - `amount` must be greater than zero.
     * - Only admins can deposit.
     * - Token currency must be accepted in {FuulFactory}
     * - Currency must be the address zero (native token) or ERC20.
     */
    function depositFungibleToken(
        address currency,
        uint256 amount
    )
        external
        payable
        onlyRole(DEFAULT_ADMIN_ROLE)
        nonReentrant
        nonZeroAmount(amount)
    {
        IFuulFactory.TokenType currencyType = _getCurrencyToken(currency);

        uint256 depositedAmount;

        if (currencyType == IFuulFactory.TokenType.NATIVE) {
            if (msg.value != amount) {
                revert IncorrectMsgValue();
            }
            depositedAmount = amount;
        } else if (currencyType == IFuulFactory.TokenType.ERC_20) {
            if (msg.value > 0) {
                revert IncorrectMsgValue();
            }

            uint256 previousBalance = IERC20(currency).balanceOf(address(this));

            IERC20(currency).safeTransferFrom(
                _msgSender(),
                address(this),
                amount
            );

            depositedAmount =
                IERC20(currency).balanceOf(address(this)) -
                previousBalance;
        } else {
            revert InvalidCurrency();
        }

        // Update balance
        budgets[currency] += depositedAmount;

        emit FungibleBudgetDeposited(depositedAmount, currency);
    }

    /**
     * @dev Deposits NFTs.
     *
     * Note: `amounts` parameter is only used when dealing with ERC1155 tokens.
     *
     * Emits {BudgetDeposited}.
     *
     * Requirements:
     *
     * - `tokenIds` must not be an empty string.
     * - Only admins can deposit.
     * - Token currency must be accepted in {FuulFactory}
     * - Currency must be an ERC721 or ERC1155.
     */
    function depositNFTToken(
        address currency,
        uint256[] calldata tokenIds,
        uint256[] calldata amounts
    ) external onlyRole(DEFAULT_ADMIN_ROLE) nonReentrant {
        IFuulFactory.TokenType currencyType = _getCurrencyToken(currency);

        if (currencyType == IFuulFactory.TokenType.ERC_721) {
            uint256 depositedAmount = tokenIds.length;

            _nonZeroAmount(depositedAmount);
            budgets[currency] += depositedAmount;

            _transferERC721Tokens(
                currency,
                _msgSender(),
                address(this),
                tokenIds
            );
            emit ERC721BudgetDeposited(depositedAmount, currency, tokenIds);
        } else if (currencyType == IFuulFactory.TokenType.ERC_1155) {
            uint256 depositedAmount = _getSumFromArray(amounts);
            _nonZeroAmount(depositedAmount);
            budgets[currency] += depositedAmount;
            _transferERC1155Tokens(
                currency,
                _msgSender(),
                address(this),
                tokenIds,
                amounts
            );

            emit ERC1155BudgetDeposited(
                _msgSender(),
                depositedAmount,
                currency,
                tokenIds,
                amounts
            );
        } else {
            revert InvalidCurrency();
        }
    }

    /*╔═════════════════════════════╗
      ║        REMOVE BUDGET        ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Sets timestamp for which users request to remove their budgets.
     *
     * Emits {AppliedToRemove}.
     *
     * Requirements:
     *
     * - Only admins can call this function.
     */
    function applyToRemoveBudget() external onlyRole(DEFAULT_ADMIN_ROLE) {
        lastRemovalApplication = block.timestamp;

        emit AppliedToRemove(lastRemovalApplication);
    }

    /**
     * @dev Returns the window when projects can remove funds.
     * The cooldown period for removing a project's budget begins upon calling the {applyToRemoveBudget} function
     * and ends once the `projectBudgetCooldown` period has elapsed.
     *
     * The period to remove starts when the cooldown is completed, and ends after {removePeriod}.
     *
     * It is a public function for the UI to be able to read and display dates.
     */
    function getBudgetRemovePeriod()
        public
        view
        returns (uint256 cooldown, uint256 removePeriodEnds)
    {
        uint256 lastApplication = lastRemovalApplication;

        if (lastApplication == 0) {
            revert NoRemovalApplication();
        }

        (uint256 budgetCooldown, uint256 removePeriod) = fuulFactoryInstance
            .getBudgetRemoveInfo();

        cooldown = lastApplication + budgetCooldown;
        removePeriodEnds = cooldown + removePeriod;

        return (cooldown, removePeriodEnds);
    }

    /**
     * @dev Returns if the project is inside the removal window.
     * It should be after the cooldown is completed and before the removal period ends.
     * It is a public function for the UI to be able to check if the project can remove.
     */
    function canRemoveFunds() public view returns (bool) {
        (
            uint256 cooldownPeriodEnds,
            uint256 removePeriodEnds
        ) = getBudgetRemovePeriod();

        if (
            block.timestamp < cooldownPeriodEnds ||
            block.timestamp > removePeriodEnds
        ) {
            revert OutsideRemovalWindow();
        }

        return true;
    }

    /**
     * @dev Removes fungible tokens.
     * They can be native or ERC20 tokens.
     *
     * Emits {BudgetRemoved}.
     *
     * Requirements:
     *
     * - `amount` must be greater than zero.
     * - `amount` must be lower than budget for currency
     * - Only admins can remove.
     * - Must be within the Budget removal window.
     * - Currency must be the address zero (native token) or ERC20.
     */
    function removeFungibleBudget(
        address currency,
        uint256 amount
    )
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
        nonReentrant
        canRemove
        nonZeroAmount(amount)
    {
        // Update budget - By underflow it indirectly checks that amount <= currentBudget
        budgets[currency] -= amount;

        (IFuulFactory.TokenType currencyType, ) = fuulFactoryInstance
            .acceptedCurrencies(currency);

        if (currencyType == IFuulFactory.TokenType.NATIVE) {
            payable(_msgSender()).sendValue(amount);
        } else if (currencyType == IFuulFactory.TokenType.ERC_20) {
            IERC20(currency).safeTransfer(_msgSender(), amount);
        } else {
            revert InvalidCurrency();
        }

        emit FungibleBudgetRemoved(amount, currency);
    }

    /**
     * @dev Removes NFT tokens.
     * They can be ERC1155 or ERC721 tokens.
     * `amounts` parameter is only used when dealing with ERC1155 tokens.
     *
     * Emits {BudgetRemoved}.
     *
     * Requirements:
     *
     * - `amount` must be greater than zero.
     * - `amount` must be lower than budget for currency
     * - Only admins can remove.
     * - Must be within the Budget removal window.
     * - Currency must be an ERC721 or ERC1155.
     */
    function removeNFTBudget(
        address currency,
        uint256[] calldata tokenIds,
        uint256[] calldata amounts
    ) external onlyRole(DEFAULT_ADMIN_ROLE) nonReentrant canRemove {
        (IFuulFactory.TokenType currencyType, ) = fuulFactoryInstance
            .acceptedCurrencies(currency);

        if (currencyType == IFuulFactory.TokenType.ERC_721) {
            uint256 removeAmount = tokenIds.length;
            _nonZeroAmount(removeAmount);

            // Update budget - By underflow it indirectly checks that amount <= budget
            budgets[currency] -= removeAmount;

            _transferERC721Tokens(
                currency,
                address(this),
                _msgSender(),
                tokenIds
            );

            emit ERC721BudgetRemoved(removeAmount, currency, tokenIds);
        } else if (currencyType == IFuulFactory.TokenType.ERC_1155) {
            uint256 removeAmount = _getSumFromArray(amounts);
            _nonZeroAmount(removeAmount);

            // Update budget - By underflow it indirectly checks that amount <= budget
            budgets[currency] -= removeAmount;
            _transferERC1155Tokens(
                currency,
                address(this),
                _msgSender(),
                tokenIds,
                amounts
            );

            emit ERC1155BudgetRemoved(
                _msgSender(),
                removeAmount,
                currency,
                tokenIds,
                amounts
            );
        } else {
            revert InvalidCurrency();
        }
    }

    /*╔═════════════════════════════╗
      ║        NFT FEE BUDGET       ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Deposits budget to pay for fees when rewarding NFTs.
     * The currency is defined in the {FuulFactory} contract.
     *
     * Emits {FeeBudgetDeposit}.
     *
     * Requirements:
     *
     * - `amount` must be greater than zero.
     * - Only admins can deposit.
     */
    function depositFeeBudget(
        uint256 amount
    )
        external
        payable
        onlyRole(DEFAULT_ADMIN_ROLE)
        nonReentrant
        nonZeroAmount(amount)
    {
        address currency = fuulFactoryInstance.nftFeeCurrency();
        uint256 depositedAmount;

        if (currency == address(0)) {
            if (msg.value != amount) {
                revert IncorrectMsgValue();
            }
            depositedAmount = amount;
        } else {
            if (msg.value > 0) {
                revert IncorrectMsgValue();
            }

            uint256 previousBalance = IERC20(currency).balanceOf(address(this));

            IERC20(currency).safeTransferFrom(
                _msgSender(),
                address(this),
                amount
            );

            depositedAmount =
                IERC20(currency).balanceOf(address(this)) -
                previousBalance;
        }

        // Update balance
        nftFeeBudget[currency] += depositedAmount;

        emit FeeBudgetDeposited(_msgSender(), depositedAmount, currency);
    }

    /**
     * @dev Removes fee budget for NFT rewards.
     *
     * Emits {FeeBudgetRemoved}.
     *
     * Notes: Currency is an argument because if the default is
     * changed in {FuulProject}, projects will still be able to remove.
     *
     * Requirements:
     *
     * - `amount` must be greater than zero.
     * - `amount` must be lower than fee budget.
     * - Only admins can remove.
     * - Must be within the Budget removal window.
     */
    function removeFeeBudget(
        address currency,
        uint256 amount
    )
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
        nonReentrant
        canRemove
        nonZeroAmount(amount)
    {
        // Update budget - By underflow it indirectly checks that amount <= nftFeeBudget
        nftFeeBudget[currency] -= amount;

        if (currency == address(0)) {
            payable(_msgSender()).sendValue(amount);
        } else {
            IERC20(currency).safeTransfer(_msgSender(), amount);
        }

        emit FeeBudgetRemoved(_msgSender(), amount, currency);
    }

    /*╔═════════════════════════════╗
      ║         ATTRIBUTION         ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Internal function to calculate fees and amounts for fungible token reward.
     */

    function _calculateAmountsForFungibleToken(
        IFuulFactory.FeesInformation memory feesInfo,
        uint256 amountToPartner,
        uint256 amountToEndUser
    )
        internal
        pure
        returns (
            uint256[3] memory fees,
            uint256 netAmountToPartner,
            uint256 netAmountToEndUser
        )
    {
        uint256 totalAmount = amountToPartner + amountToEndUser;

        // Calculate the percentage to partners
        uint256 partnerPercentage = (100 * amountToPartner) / totalAmount;

        // Get all fees
        fees = [
            (feesInfo.protocolFee * totalAmount) / 10000,
            (feesInfo.clientFee * totalAmount) / 10000,
            (feesInfo.attributorFee * totalAmount) / 10000
        ];

        // Get net amounts
        uint256 netTotal = (totalAmount - fees[0] - fees[1] - fees[2]);
        netAmountToPartner = (netTotal * partnerPercentage) / 100;

        netAmountToEndUser = netTotal - netAmountToPartner;

        return (fees, netAmountToPartner, netAmountToEndUser);
    }

    /**
     * @dev Internal function to calculate fees for non fungible token reward.
     *
     */
    function _calculateFeesForNFT(
        IFuulFactory.FeesInformation memory feesInfo
    ) internal pure returns (uint256[3] memory fees) {
        uint256 totalAmount = feesInfo.nftFixedFeeAmount;
        fees = [
            (feesInfo.protocolFee * totalAmount) / 10000,
            (feesInfo.clientFee * totalAmount) / 10000,
            (feesInfo.attributorFee * totalAmount) / 10000
        ];

        return fees;
    }

    /**
     * @dev Attributes: removes amounts from budget and adds them to corresponding partners, users and fee collectors.
     *
     * Emits {Attributed}.
     *
     * Notes:
     * - When rewards are fungible tokens, fees will be a percentage of the payment and it will be substracted from the payment.
     * - When rewards are NFTs, fees will be a fixed amount and the `nftFeeBudget` will be used.
     *
     * Requirements:
     *
     * - Currency budgets have to be greater than amounts attributed.
     * - The sum of `amountToPartner` and `amountToEndUser` for each `Attribution` must be greater than zero.
     * - Only `MANAGER_ROLE` in {FuulFactory} addresses can call this function. This is checked through the `getFeesInformation` in {FuulFactory}.
     * - Proof must not exist (be previously attributed).
     * - {FuulManager} must not be paused. This is checked through The `attributeConversions` function in {FuulManager}.
     * - Currency token must be accepted in {FuulFactory}
     */

    function attributeConversions(
        Attribution[] calldata attributions,
        address attributorFeeCollector
    ) external nonReentrant {
        // Using this function to get all the necessary info from {FuulFactory} from one call
        IFuulFactory.FeesInformation memory feesInfo = fuulFactoryInstance
            .attributionFeeHelper(_msgSender());

        for (uint256 i = 0; i < attributions.length; ) {
            Attribution memory attribution = attributions[i];

            if (attributionProofs[attribution.proof]) {
                revert AlreadyAttributed();
            }

            if (
                keccak256(
                    abi.encodePacked(
                        attribution.proofWithoutProject,
                        address(this)
                    )
                ) != attribution.proof
            ) {
                revert InvalidProof();
            }

            address currency = attribution.currency;

            IFuulFactory.TokenType currencyType = _getCurrencyToken(currency);

            attributionProofs[attribution.proof] = true;

            uint256 totalAmount = attribution.amountToPartner +
                attribution.amountToEndUser;

            _nonZeroAmount(totalAmount);

            // Calculate fees and amounts

            uint256[3] memory fees;
            uint256 amountToPartner;
            uint256 amountToEndUser;
            address feeCurrency;

            if (
                currencyType == IFuulFactory.TokenType.NATIVE ||
                currencyType == IFuulFactory.TokenType.ERC_20
            ) {
                (
                    fees,
                    amountToPartner,
                    amountToEndUser
                ) = _calculateAmountsForFungibleToken(
                    feesInfo,
                    attribution.amountToPartner,
                    attribution.amountToEndUser
                );

                feeCurrency = currency;
            } else if (
                currencyType == IFuulFactory.TokenType.ERC_721 ||
                currencyType == IFuulFactory.TokenType.ERC_1155
            ) {
                // It is not necessary to check if it's an NFT address. If it has budget and it is not a fungible, then it's an NFT
                fees = _calculateFeesForNFT(feesInfo);
                amountToPartner = attribution.amountToPartner;
                amountToEndUser = attribution.amountToEndUser;

                feeCurrency = feesInfo.nftFeeCurrency;

                // Remove from fees budget
                nftFeeBudget[feeCurrency] -= (fees[0] + fees[1] + fees[2]);
            } else {
                revert InvalidCurrency();
            }

            // Update budget balance
            budgets[currency] -= totalAmount;

            // Update protocol balance
            availableToClaim[feesInfo.protocolFeeCollector][
                feeCurrency
            ] += fees[0];

            // Update client balance
            availableToClaim[clientFeeCollector][feeCurrency] += fees[1];

            // Update attributor balance
            availableToClaim[attributorFeeCollector][feeCurrency] += fees[2];

            // Update partner balance
            availableToClaim[attribution.partner][currency] += amountToPartner;

            // Update end user balance
            availableToClaim[attribution.endUser][currency] += amountToEndUser;

            // Emit Event
            emit Attributed(
                currency,
                totalAmount,
                [
                    feesInfo.protocolFeeCollector,
                    clientFeeCollector,
                    attributorFeeCollector,
                    attribution.partner,
                    attribution.endUser
                ],
                [fees[0], fees[1], fees[2], amountToPartner, amountToEndUser],
                attribution.proof
            );

            // Using unchecked to the next element in the loop optimize gas
            unchecked {
                i++;
            }
        }
    }

    /**
     * @dev Claims: sends funds to `receiver` that has available to claim funds.
     *
     * `tokenIds` parameter is only used when dealing with ERC1155 and ERC721 tokens.
     * `amounts` parameter is only used when dealing with ERC1155 tokens.
     *
     * Requirements:
     *
     * - `receiver` must have available funds to claim for {currency}.
     * - Only `MANAGER_ROLE` in {FuulFactory} addresses can call this function.
     * - {FuulManager} must not be paused. This is checked through The `claim` function in {FuulManager}.
     */

    function claimFromProject(
        address currency,
        address receiver,
        uint256 amount,
        uint256[] calldata tokenIds,
        uint256[] calldata amounts
    ) external nonReentrant {
        fuulFactoryInstance.hasManagerRole(_msgSender());

        // It fails with underflow if amount < avaiable to claim
        availableToClaim[receiver][currency] -= amount;

        (IFuulFactory.TokenType currencyType, ) = fuulFactoryInstance
            .acceptedCurrencies(currency);

        if (currencyType == IFuulFactory.TokenType.NATIVE) {
            payable(receiver).sendValue(amount);
        } else if (currencyType == IFuulFactory.TokenType.ERC_20) {
            IERC20(currency).safeTransfer(receiver, amount);
        } else if (currencyType == IFuulFactory.TokenType.ERC_721) {
            uint256 tokenIdsLength = tokenIds.length;

            // Check that the amount of tokenIds to claim is equal to the available amount
            if (amount != tokenIdsLength) {
                revert InvalidArgument();
            }

            _transferERC721Tokens(currency, address(this), receiver, tokenIds);
        } else if (currencyType == IFuulFactory.TokenType.ERC_1155) {
            // Check that the sum of the amounts of tokenIds to claim is equal to the available amount

            if (amount != _getSumFromArray(amounts)) {
                revert InvalidArgument();
            }

            _transferERC1155Tokens(
                currency,
                address(this),
                receiver,
                tokenIds,
                amounts
            );
        } else {
            revert InvalidCurrency();
        }

        emit Claimed(receiver, currency, amount, tokenIds, amounts);
    }

    /*╔═════════════════════════════╗
      ║   INTERNAL TRANSFER TOKENS  ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Helper function to transfer ERC721 tokens.
     */
    function _transferERC721Tokens(
        address tokenAddress,
        address senderAddress,
        address receiverAddress,
        uint256[] calldata tokenIds
    ) internal {
        for (uint256 i = 0; i < tokenIds.length; ) {
            IERC721(tokenAddress).safeTransferFrom(
                senderAddress,
                receiverAddress,
                tokenIds[i]
            );

            // Using unchecked to the next element in the loop optimize gas
            unchecked {
                i++;
            }
        }
    }

    /**
     * @dev Helper function to transfer ERC1155 tokens.
     */
    function _transferERC1155Tokens(
        address tokenAddress,
        address senderAddress,
        address receiverAddress,
        uint256[] calldata tokenIds,
        uint256[] calldata amounts
    ) internal {
        // Transfer from does not allow to send more funds than balance
        IERC1155(tokenAddress).safeBatchTransferFrom(
            senderAddress,
            receiverAddress,
            tokenIds,
            amounts,
            ""
        );
    }

    /*╔═════════════════════════════╗
      ║            OTHER            ║
      ╚═════════════════════════════╝*/

    /**
     * @dev Gets token info from {FuulFactory}.
     */
    function _getCurrencyToken(
        address currency
    ) internal view returns (IFuulFactory.TokenType currencyType) {
        bool isAccepted;

        (currencyType, isAccepted) = fuulFactoryInstance.acceptedCurrencies(
            currency
        );

        if (!isAccepted) {
            revert IFuulFactory.TokenCurrencyNotAccepted();
        }

        return currencyType;
    }

    /**
     * @dev Helper function to sum all amounts inside the array.
     */
    function _getSumFromArray(
        uint256[] calldata amounts
    ) internal pure returns (uint256 result) {
        for (uint256 i = 0; i < amounts.length; ) {
            result += amounts[i];

            // Using unchecked to the next element in the loop optimize gas
            unchecked {
                i++;
            }
        }

        return result;
    }

    /*╔═════════════════════════════╗
      ║          OVERRIDES          ║
      ╚═════════════════════════════╝*/

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(
        bytes4 interfaceId
    )
        public
        view
        virtual
        override(AccessControlEnumerable, ERC1155Receiver)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.18;

interface IFuulFactory {
    struct FeesInformation {
        uint256 protocolFee;
        uint256 attributorFee;
        uint256 clientFee;
        address protocolFeeCollector;
        uint256 nftFixedFeeAmount;
        address nftFeeCurrency;
    }

    enum TokenType {
        NATIVE,
        ERC_20,
        ERC_721,
        ERC_1155
    }

    struct CurrencyToken {
        TokenType tokenType;
        bool isAccepted;
    }

    /*╔═════════════════════════════╗
      ║           EVENTS            ║
      ╚═════════════════════════════╝*/
    event ProjectCreated(
        uint256 projectId,
        address indexed deployedAddress,
        address indexed eventSigner,
        string projectInfoURI,
        address clientFeeCollector
    );

    event ProtocolFeeUpdated(uint256 value);
    event ClientFeeUpdated(uint256 value);
    event AttributorFeeUpdated(uint256 value);
    event NftFixedFeeUpdated(uint256 value);
    event NftFeeCurrencyUpdated(address newCurrency);
    event ProtocolFeeCollectorUpdated(address indexed newCollector);
    event CurrencyAdded(address indexed newCurrency, TokenType tokenType);
    event CurrencyRemoved(address indexed newCurrency, TokenType tokenType);
    event ProjectCooldownUpdated(uint256 value);
    event ProjectRemovePeriodUpdated(uint256 value);

    /*╔═════════════════════════════╗
      ║           ERRORS            ║
      ╚═════════════════════════════╝*/

    error ZeroAddress();
    error TokenCurrencyAlreadyAccepted();
    error TokenCurrencyNotAccepted();
    error Unauthorized();
    error InvalidTokenType();

    /*╔═════════════════════════════╗
      ║        CREATE PROJECT       ║
      ╚═════════════════════════════╝*/

    function createFuulProject(
        address projectAdmin,
        address projectEventSigner,
        string calldata projectInfoURI,
        address clientFeeCollector
    ) external;

    function totalProjectsCreated() external view returns (uint256);

    /*╔═════════════════════════════╗
      ║        MANAGER ROLE         ║
      ╚═════════════════════════════╝*/

    function hasManagerRole(address account) external view returns (bool);

    /*╔═════════════════════════════╗
      ║        FEES VARIABLES       ║
      ╚═════════════════════════════╝*/

    function protocolFee() external view returns (uint256 fees);

    function protocolFeeCollector() external view returns (address);

    function getAllFees() external returns (FeesInformation memory);

    function attributionFeeHelper(
        address sender
    ) external returns (FeesInformation memory);

    function clientFee() external view returns (uint256 fees);

    function attributorFee() external view returns (uint256 fees);

    function nftFeeCurrency() external view returns (address);

    function setProtocolFee(uint256 value) external;

    function setClientFee(uint256 value) external;

    function setAttributorFee(uint256 value) external;

    function setNftFixedFeeAmount(uint256 value) external;

    function setNftFeeCurrency(address newCurrency) external;

    /*╔═════════════════════════════╗
      ║       TOKEN CURRENCIES      ║
      ╚═════════════════════════════╝*/

    function acceptedCurrencies(
        address tokenAddress
    ) external view returns (TokenType tokenType, bool isAccepted);

    function addCurrencyToken(
        address tokenAddress,
        TokenType tokenType
    ) external;

    function removeCurrencyToken(address tokenAddress) external;

    /*╔═════════════════════════════╗
      ║       REMOVE VARIABLES      ║
      ╚═════════════════════════════╝*/

    function projectBudgetCooldown() external view returns (uint256 period);

    function getBudgetRemoveInfo()
        external
        view
        returns (uint256 cooldown, uint256 removeWindow);

    function setProjectBudgetCooldown(uint256 period) external;

    function setProjectRemoveBudgetPeriod(uint256 period) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.18;

import "@openzeppelin/contracts/access/IAccessControlEnumerable.sol";

interface IFuulProject is IAccessControlEnumerable {
    /*╔═════════════════════════════╗
      ║           STRUCT            ║
      ╚═════════════════════════════╝*/

    // Attribution
    struct Attribution {
        address currency;
        address partner;
        address endUser;
        uint256 amountToPartner;
        uint256 amountToEndUser;
        bytes32 proof;
        bytes32 proofWithoutProject;
    }

    /*╔═════════════════════════════╗
      ║           EVENTS            ║
      ╚═════════════════════════════╝*/

    event ProjectInfoUpdated(string projectInfoURI);

    event FungibleBudgetDeposited(uint256 amount, address indexed currency);

    event ERC721BudgetDeposited(
        uint256 amount,
        address indexed currency,
        uint256[] tokenIds
    );

    event ERC1155BudgetDeposited(
        address indexed account,
        uint256 amount,
        address indexed currency,
        uint256[] tokenIds,
        uint256[] amounts
    );

    event FungibleBudgetRemoved(uint256 amount, address indexed currency);

    event ERC721BudgetRemoved(
        uint256 amount,
        address indexed currency,
        uint256[] tokenIds
    );

    event ERC1155BudgetRemoved(
        address indexed account,
        uint256 amount,
        address indexed currency,
        uint256[] tokenIds,
        uint256[] amounts
    );

    event Claimed(
        address indexed account,
        address indexed currency,
        uint256 amount,
        uint256[] rewardTokenIds,
        uint256[] amounts
    );

    // Array Order: protocol, client, attributor, partner, end user

    event Attributed(
        address indexed currency,
        uint256 totalAmount,
        address[5] receivers,
        uint256[5] amounts,
        bytes32 proof
    );

    event FeeBudgetDeposited(
        address indexed account,
        uint256 amount,
        address indexed currency
    );

    event FeeBudgetRemoved(
        address indexed account,
        uint256 amount,
        address indexed currency
    );

    event AppliedToRemove(uint256 timestamp);

    /*╔═════════════════════════════╗
      ║           ERRORS            ║
      ╚═════════════════════════════╝*/

    error ManagerIsPaused();
    error EmptyURI();
    error NoRemovalApplication();
    error IncorrectMsgValue();
    error OutsideRemovalWindow();
    error ZeroAmount();
    error AlreadyAttributed();
    error InvalidProof();
    error Forbidden();
    error InvalidCurrency();
    error InvalidArgument();

    /*╔═════════════════════════════╗
      ║       PUBLIC VARIABLES      ║
      ╚═════════════════════════════╝*/

    function fuulFactory() external view returns (address);

    function availableToClaim(
        address account,
        address currency
    ) external view returns (uint256);

    /*╔═════════════════════════════╗
      ║        PROJECT INFO         ║
      ╚═════════════════════════════╝*/

    function projectInfoURI() external view returns (string memory);

    function setProjectURI(string memory projectURI) external;

    function clientFeeCollector() external view returns (address);

    /*╔═════════════════════════════╗
      ║           DEPOSIT           ║
      ╚═════════════════════════════╝*/

    function depositFungibleToken(
        address currency,
        uint256 amount
    ) external payable;

    function depositNFTToken(
        address currency,
        uint256[] memory rewardTokenIds,
        uint256[] memory amounts
    ) external;

    /*╔═════════════════════════════╗
      ║           REMOVE            ║
      ╚═════════════════════════════╝*/

    function lastRemovalApplication() external view returns (uint256);

    function applyToRemoveBudget() external;

    function getBudgetRemovePeriod() external view returns (uint256, uint256);

    function canRemoveFunds() external view returns (bool insideRemovalWindow);

    function removeFungibleBudget(address currency, uint256 amount) external;

    function removeNFTBudget(
        address currency,
        uint256[] memory rewardTokenIds,
        uint256[] memory amounts
    ) external;

    /*╔═════════════════════════════╗
      ║          ATTRIBUTE          ║
      ╚═════════════════════════════╝*/

    function attributeConversions(
        Attribution[] calldata attributions,
        address attributorFeeCollector
    ) external;

    function attributionProofs(bytes32 proof) external view returns (bool);

    /*╔═════════════════════════════╗
      ║            CLAIM            ║
      ╚═════════════════════════════╝*/

    function claimFromProject(
        address currency,
        address receiver,
        uint256 amount,
        uint256[] memory tokenIds,
        uint256[] memory amounts
    ) external;
}

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