Contract 0x5C071a3FCd0A8A22633c47aC662bb62A356ED9Dd 1

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

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

  function version() external view returns (uint256);

  // getRoundData and latestRoundData should both raise "No data present"
  // if they do not have data to report, instead of returning unset values
  // which could be misinterpreted as actual reported values.
  function getRoundData(uint80 _roundId)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );
}

// 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 v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// 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 v4.6.0) (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/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 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: BUSL-1.1

pragma solidity >=0.8.4;
import "./HTokenInternalI.sol";

/**
 * @title   Interface of HToken
 * @author  Honey Labs Inc.
 * @custom:coauthor BowTiedPickle
 * @custom:coauthor m4rio
 */
interface HTokenI is HTokenInternalI {
  /**
   * @notice  Deposit underlying ERC-20 asset and mint hTokens
   * @dev     Pull pattern, user must approve the contract before calling. If _to is address(0) then it becomes msg.sender
   * @param   _amount   Quantity of underlying ERC-20 to transfer in
   * @param   _to       Target address to mint hTokens to
   */
  function depositUnderlying(uint256 _amount, address _to) external;

  /**
   * @notice  Redeem a specified amount of hTokens for their underlying ERC-20 asset
   * @param   _amount   Quantity of hTokens to redeem for underlying ERC-20
   */
  function redeem(uint256 _amount) external;

  /**
   * @notice  Withdraws the specified amount of underlying ERC-20 asset, consuming the minimum amount of hTokens necessary
   * @param   _amount   Quantity of underlying ERC-20 tokens to withdraw
   */
  function withdraw(uint256 _amount) external;

  /**
   * @notice  Deposit multiple specified tokens of the underlying ERC-721 asset and mint ERC-1155 deposit coupon NFTs
   * @dev     Pull pattern, user must approve the contract before calling.
   * @param   _collateralIds  Token IDs of underlying ERC-721 to be transferred in
   */
  function depositCollateral(uint256[] calldata _collateralIds) external;

  /**
   * @notice  Sender borrows assets from the protocol against the specified collateral asset, without a referral code
   * @dev     Collateral must be deposited first.
   * @param   _borrowAmount   Amount of underlying ERC-20 to borrow
   * @param   _collateralId   Token ID of underlying ERC-721 to be borrowed against
   */
  function borrow(uint256 _borrowAmount, uint256 _collateralId) external;

  /**
   * @notice  Sender borrows assets from the protocol against the specified collateral asset, using a referral code
   * @param   _borrowAmount   Amount of underlying ERC-20 to borrow
   * @param   _collateralId   Token ID of underlying ERC-721 to be borrowed against
   * @param   _referral       Referral code as a plain string
   * @param   _signature      Signed message authorizing the referral, provided by Honey Labs
   */
  function borrowReferred(
    uint256 _borrowAmount,
    uint256 _collateralId,
    string calldata _referral,
    bytes calldata _signature
  ) external;

  /**
   * @notice  Sender repays a borrow taken against the specified collateral asset
   * @dev     Pull pattern, user must approve the contract before calling.
   * @param   _repayAmount    Amount of underlying ERC-20 to repay
   * @param   _collateralId   Token ID of underlying ERC-721 to be repaid against
   */
  function repayBorrow(
    uint256 _repayAmount,
    uint256 _collateralId,
    address _to
  ) external;

  /**
   * @notice  Burn deposit coupon NFTs and withdraw the associated underlying ERC-721 NFTs
   * @param   _collateralIds  Token IDs of underlying ERC-721 to be withdrawn
   */
  function withdrawCollateral(uint256[] calldata _collateralIds) external;

  /**
   * @notice  Trigger transfer of an NFT to the liquidation contract
   * @param   _collateralId   Token ID of underlying ERC-721 to be liquidated
   */
  function liquidateBorrow(uint256 _collateralId) external;

  /**
   * @notice  Pay off the entirety of a liquidated debt position and burn the coupon
   * @dev     May only be called by the liquidator
   * @param   _borrower       Owner of the debt position
   * @param   _collateralId   Token ID of underlying ERC-721 to be closed out
   */
  function closeoutLiquidation(address _borrower, uint256 _collateralId) external;

  /**
   * @notice  Accrues all interest due to the protocol
   * @dev     Call this before performing calculations using 'totalBorrows' or other contract-wide quantities
   */
  function accrueInterest() external;

  // ----- Utility functions -----

  /**
   * @notice  Sweep accidental ERC-20 transfers to this contract.
   * @dev     Tokens are sent to the DAO for later distribution
   * @param   _token  The address of the ERC-20 token to sweep
   */
  function sweepToken(IERC20 _token) external;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.4;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/access/IAccessControl.sol";

/**
 * @title   Interface of HToken Internal
 * @author  Honey Labs Inc.
 * @custom:coauthor m4rio
 * @custom:coauthor BowTiedPickle
 */
interface HTokenInternalI is IERC1155, IAccessControl {
  struct Coupon {
    uint32 id; //Coupon's id
    uint8 active; // Coupon activity status
    address owner; // Who is the current owner of this coupon
    uint256 collateralId; // tokenId of the collateral collection that is borrowed against
    uint256 borrowAmount; // Principal borrow balance, denominated in underlying ERC20 token.
    uint256 debtShares; // Debt shares, keeps the shares of total debt by the protocol
  }

  struct Collateral {
    uint256 collateralId; // TokenId of the collateral
    bool active; // Collateral activity status
  }

  // ----- Informational -----

  function decimals() external view returns (uint8);

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

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

  // ----- Addresses -----

  function collateralToken() external view returns (IERC721);

  function underlyingToken() external view returns (IERC20);

  // ----- Protocol Accounting -----

  function totalBorrows() external view returns (uint256);

  function totalReserves() external view returns (uint256);

  function totalSupply() external view returns (uint256);

  function totalFuseFees() external view returns (uint256);

  function totalAdminCommission() external view returns (uint256);

  function accrualBlockNumber() external view returns (uint256);

  function interestIndexStored() external view returns (uint256);

  function totalProtocolCommissions() external view returns (uint256);

  function userToCoupons(address _user) external view returns (uint256);

  function collateralPerBorrowCouponId(uint256 _couponId) external view returns (Collateral memory);

  function borrowCoupons(uint256 _collateralId) external view returns (Coupon memory);

  // ----- Views -----

  /**
   * @notice  Get the outstanding debt of a collateral
   * @dev     Simulates accrual of interest
   * @param   _collateralId   Token ID of underlying ERC-721
   * @return  Outstanding debt in units of underlying ERC-20
   */
  function getDebtForCollateral(uint256 _collateralId) external view returns (uint256);

  /**
   * @notice  Returns the current per-block borrow interest rate for this hToken
   * @return  The borrow interest rate per block, scaled by 1e18
   */
  function borrowRatePerBlock() external view returns (uint256);

  /**
   * @notice  Get the outstanding debt of a coupon
   * @dev     Simulates accrual of interest
   * @param   _couponId   ID of the coupon
   * @return  Outstanding debt in units of underlying ERC-20
   */
  function getDebtForCoupon(uint256 _couponId) external view returns (uint256);

  /**
   * @notice  Gets balance of this contract in terms of the underlying excluding the fees
   * @dev     This excludes the value of the current message, if any
   * @return  The quantity of underlying ERC-20 tokens owned by this contract
   */
  function getCashPrior() external view returns (uint256);

  /**
   * @notice  Get a snapshot of the account's balances, and the cached exchange rate
   * @dev     This is used by controller to more efficiently perform liquidity checks.
   * @param   _account  Address of the account to snapshot
   * @return  (token balance, borrow balance, exchange rate mantissa)
   */
  function getAccountSnapshot(address _account)
    external
    view
    returns (
      uint256,
      uint256,
      uint256
    );

  /**
   * @notice  Get the outstanding debt of the protocol
   * @return  Protocol debt
   */
  function getDebt() external view returns (uint256);

  /**
   * @notice  Returns protocol fees
   * @return  Reserve factor mantissa
   * @return  Admin fee mantissa
   * @return  Hive fee mantissa
   * @return  Initial exchange rate mantissa
   * @return  Maximum borrow rate mantissa
   */
  function getProtocolFees()
    external
    view
    returns (
      uint256,
      uint256,
      uint256,
      uint256,
      uint256
    );

  /**
   * @notice  Returns different addresses of the protocol
   * @return  Liquidator address
   * @return  HTokenHelper address
   * @return  Controller address
   * @return  Admin Fee Receiver address
   * @return  Hive Fee Receiver address
   * @return  Interest Model address
   * @return  Referral Pool address
   * @return  DAO address
   */
  function getAddresses()
    external
    view
    returns (
      address,
      address,
      address,
      address,
      address,
      address,
      address,
      address
    );

  /**
   * @notice  Get the last minted coupon ID
   * @return  The last minted coupon ID
   */
  function idCounter() external view returns (uint256);

  /**
   * @notice  Get the coupon for a specific collateral NFT
   * @param   _collateralId   Token ID of underlying ERC-721
   * @return  Coupon
   */
  function getSpecificCouponByCollateralId(uint256 _collateralId) external view returns (Coupon memory);

  /**
   * @notice  Calculate the prevailing interest due per token of debt principal
   * @return  Mantissa formatted interest rate per token of debt
   */
  function interestIndex() external view returns (uint256);

  /**
   * @notice  Accrue interest then return the up-to-date exchange rate from the ERC-20 underlying to the HToken
   * @return  Calculated exchange rate scaled by 1e18
   */
  function exchangeRateCurrent() external returns (uint256);

  /**
   * @notice  Calculates the exchange rate from the ERC-20 underlying to the HToken
   * @dev     This function does not accrue interest before calculating the exchange rate
   * @return  Calculated exchange rate scaled by 1e18
   */
  function exchangeRateStored() external view returns (uint256);

  /**
   * @notice  Add to or take away from reserves
   * @dev     Accrues interest
   * @param   _amount  Quantity of underlying ERC-20 token to change the reserves by
   */
  function _modifyReserves(uint256 _amount, bool _add) external;

  /**
   * @notice  Set new admin fee mantissas
   * @dev     Accrues interest
   * @param   _newAdminCommissionMantissa        New admin fee mantissa
   */
  function _setAdminCommission(uint256 _newAdminCommissionMantissa) external;

  /**
   * @notice  Set new protocol commission and reserve factor mantissas
   * @dev     Accrues interest
   * @param   _newProtocolCommissionMantissa         New protocol commission mantissa
   * @param   _newReserveFactorMantissa   New reserve factor mantissa
   */
  function _setProtocolFees(uint256 _newProtocolCommissionMantissa, uint256 _newReserveFactorMantissa) external;

  /**
   * @notice  Sets a new admin fee receiver
   * @param   _newAddress   Address of the new admin fee receiver
   * @param   _target       Target ID of the address to be set
   */
  function _setAddressMarketAdmin(address _newAddress, uint256 _target) external;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.4;

import "./HTokenI.sol";

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

/**
 * @title   PermissionlessOracleI interface for the Permissionless oracle
 * @author  Honey Labs Inc.
 * @custom:coauthor BowTiedPickle
 * @custom:coauthor m4rio
 */
interface PermissionlessOracleI {
  /**
   * @notice returns the price (in eth) for the floor of a collection
   * @param _collection address of the collection
   * @param _decimals adjust decimals of the returned price
   */
  function getFloorPrice(address _collection, uint256 _decimals) external view returns (uint128, uint128);

  /**
   * @notice returns the latest price for a given pair
   * @param _erc20 the erc20 we want to get the price for in USD
   * @param _decimals decimals to denote the result in
   */
  function getUnderlyingPriceInUSD(IERC20 _erc20, uint256 _decimals) external view returns (uint256);

  /**
   * @notice get price of eth
   * @param _decimals adjust decimals of the returned price
   */
  function getEthPrice(uint256 _decimals) external view returns (uint256);

  /**
   * @notice get price feeds for a token
   * @return returns the Chainlink Aggregator interface
   */
  function priceFeeds(IERC20 _token) external view returns (AggregatorV3Interface);

  /**
   * @notice returns the update threshold for a specific _collection
   */
  function updateThreshold(address _collection) external view returns (uint256);

  /**
   * @notice returns the number of floors for a specific _collection
   * @param _address address of the collection
   *
   */
  function getNoOfFloors(address _address) external view returns (uint256);

  /**
   * @notice returns the last updated timestamp for a specific _collection
   * @param _collection address of the collection
   *
   */
  function getLastUpdated(address _collection) external view returns (uint256);
}

//SPDX-License-Identifier: BUSL-1.1

pragma solidity ^0.8.15;

import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

import ".././interfaces/HTokenI.sol";
import ".././interfaces/PermissionlessOracleI.sol";
import ".././utils/ErrorReporter.sol";

/**
 * @title   Custom oracle for Honey Labs
 * @author  Honey Labs Inc.
 * @custom:coauthor     m4rio
 * @custom:contributor  BowTiedPickle
 */
contract PermissionlessOracle is PermissionlessOracleI, AccessControlEnumerable, Pausable {
  bytes32 public constant SUBMITTER_ROLE = keccak256("SUBMITTER_ROLE");
  bytes32 public constant CREATOR_ROLE = keccak256("CREATOR_ROLE");

  /// @notice Version of the contract. 1_000_000 corresponds to 1.0.0
  uint256 public constant version = 1_000_000;

  struct Collection {
    bool paused;
    uint16 twapRange;
    address collectionAddress;
    uint256 updateThreshold; // this will make the oracle revert in case the last update is > than this threshold
    string collectionSlug;
  }

  struct FloorPrice {
    uint96 insertedAt;
    address collectionAddress;
    uint256 price;
    uint256 lastMean;
    address submitter;
  }

  /// @notice weth address
  IERC20 public immutable weth;

  /// @notice collections that are supported on the oracle
  mapping(address => Collection) public collections;

  /// @notice floor prices for different collections
  mapping(address => FloorPrice[]) public floorPrices;

  /// @notice price feeds for different ERC20s we support in the markets
  mapping(IERC20 => AggregatorV3Interface) public priceFeeds;

  constructor(IERC20 _weth) {
    _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
    _setupRole(SUBMITTER_ROLE, msg.sender);
    _setupRole(CREATOR_ROLE, msg.sender);
    weth = _weth;
  }

  /**
   * @notice  register collections to get the floors for
   * @param   _addresses        Addresses of the collections
   * @param   _collectionSlugs  Collection slugs
   * @param   _twapRanges       TWAP ranges for each collection
   * @param   _updateThresholds Update thresholds for each collection (in seconds)
   */
  function registerCollections(
    address[] calldata _addresses,
    string[] calldata _collectionSlugs,
    uint16[] calldata _twapRanges,
    uint256[] calldata _updateThresholds
  ) external whenNotPaused onlyRole(CREATOR_ROLE) {
    if (
      _addresses.length != _collectionSlugs.length &&
      _addresses.length != _twapRanges.length &&
      _addresses.length != _updateThresholds.length
    ) {
      revert WrongParams();
    }

    for (uint256 i; i < _addresses.length; ) {
      collections[_addresses[i]] = Collection(
        false,
        _twapRanges[i],
        _addresses[i],
        _updateThresholds[i],
        _collectionSlugs[i]
      );
      unchecked {
        ++i;
      }
    }
  }

  /**
   * @notice  submit floors for multiple collections
   * @param   _addresses  Collections we want to submit floors for
   * @param   _floors     Floors for each collection
   */
  function submitFloors(address[] calldata _addresses, uint256[] calldata _floors)
    external
    whenNotPaused
    onlyRole(SUBMITTER_ROLE)
  {
    if (_addresses.length != _floors.length) {
      revert WrongParams();
    }
    for (uint256 i; i < _addresses.length; ) {
      address col = _addresses[i];

      if (collections[col].collectionAddress == address(0)) {
        revert CollectionNotRegistered();
      }

      Collection storage collection = collections[col];

      uint256 lastMean;
      uint256 length = floorPrices[col].length;
      uint256 cachedTwapRange = collection.twapRange;

      // if we don't have enough twap, we just submit data, we don't have mean
      if (length < cachedTwapRange) {
        floorPrices[col].push(FloorPrice(uint96(block.timestamp), col, _floors[i], 0, msg.sender));
        emit FloorSubmitted(collection.collectionSlug, _floors[i], msg.sender);
        unchecked {
          ++i;
        }
        continue;
      }

      for (uint256 j = 1; j <= cachedTwapRange; ) {
        lastMean += floorPrices[col][length - j].price;
        unchecked {
          ++j;
        }
      }

      lastMean += _floors[i];
      floorPrices[col].push(
        FloorPrice(uint96(block.timestamp), col, _floors[i], lastMean / cachedTwapRange, msg.sender)
      );
      emit FloorSubmitted(collection.collectionSlug, _floors[i], msg.sender);

      unchecked {
        ++i;
      }
    }
  }

  /**
   * @notice  returns the price (in eth) for the floor of a collection
   * @param   _address  address of the collection
   * @param   _decimals adjust decimals of the returned price
   */
  function getFloorPrice(address _address, uint256 _decimals) external view override returns (uint128, uint128) {
    uint256 lengthOfFloor = floorPrices[_address].length;
    if (lengthOfFloor == 0) return (0, 0);
    FloorPrice storage lastFloor = floorPrices[_address][lengthOfFloor - 1];
    uint256 lastMean = lastFloor.lastMean;
    uint256 oracleDecimals = 18;

    if (oracleDecimals < _decimals) {
      unchecked {
        _decimals -= oracleDecimals;
      }

      return (uint128(lastMean * 10**_decimals), lastFloor.insertedAt);
    } else {
      unchecked {
        _decimals = oracleDecimals - _decimals;
      }
    }

    return (uint128(lastMean / 10**_decimals), lastFloor.insertedAt);
  }

  /**
   * @notice  returns the latest price for a given pair
   * @param   _erc20    the erc20 we want to get the price for in USD
   * @param   _decimals decimals to denote the result in
   */
  function getUnderlyingPriceInUSD(IERC20 _erc20, uint256 _decimals) public view returns (uint256) {
    uint256 oracleDecimals = priceFeeds[_erc20].decimals();
    (uint80 roundID, int256 price, , uint256 updatedAt, uint80 answeredInRound) = priceFeeds[_erc20].latestRoundData();

    if (updatedAt == 0 || price <= 0 || answeredInRound < roundID) {
      revert Unexpected("Price data is stale");
    }

    if (oracleDecimals < _decimals) {
      unchecked {
        _decimals -= oracleDecimals;
      }
      return uint256(price) * 10**_decimals;
    } else {
      unchecked {
        _decimals = oracleDecimals - _decimals;
      }
      return uint256(price) / 10**_decimals;
    }
  }

  /**
   * @notice  get price of eth
   * @param   _decimals adjust decimals of the returned price
   */
  function getEthPrice(uint256 _decimals) external view returns (uint256) {
    return getUnderlyingPriceInUSD(weth, _decimals);
  }

  /**
   * @notice  Returns the floor prices for a collection (paginated)
   * @param   _address  Address of the collection
   * @param   _start    Start index
   * @param   _length   Length of the results
   */
  function getFloorPricesForCollection(
    address _address,
    uint256 _start,
    uint256 _length
  ) external view returns (FloorPrice[] memory) {
    uint256 floorLength = floorPrices[_address].length;

    if (_start > floorLength) revert WrongParams();

    if (_start + _length > floorLength) {
      _length = floorLength - _start;
    }
    unchecked {
      FloorPrice[] memory collectionFloorPrices = new FloorPrice[](_length);

      for (uint256 i = _start; i < _start + _length; ++i) {
        collectionFloorPrices[i] = floorPrices[_address][i];
      }
      return collectionFloorPrices;
    }
  }

  /**
   * @notice  Returns the number of submitted floors for a collection
   * @param   _address address of the collection
   */
  function getNoOfFloors(address _address) external view override returns (uint256) {
    return floorPrices[_address].length;
  }

  /**
   * @notice Returns the update threshold for a specific _collection
   */
  function updateThreshold(address _collection) external view override returns (uint256) {
    return collections[_collection].updateThreshold;
  }

  /**
   * @notice returns the last updated timestamp for a specific _collection
   * @param _collection address of the collection
   *
   */
  function getLastUpdated(address _collection) external view override returns (uint256) {
    return floorPrices[_collection][floorPrices[_collection].length - 1].insertedAt;
  }

  /**
   * @notice  Pauses or unpauses the contract
   * @param   _shouldUnpause true if we should unpause, false if we should pause
   */
  function _triggerPause(bool _shouldUnpause) external onlyRole(DEFAULT_ADMIN_ROLE) {
    if (_shouldUnpause) _unpause();
    else _pause();
  }

  /**
   * @notice Adds a new price feed for a specific ERC20 token
   * @param _erc20 ERC20 token we want to add pricefeed for
   * @param _oracle Price feed oracle
   */
  function _addPriceFeed(IERC20 _erc20, address _oracle) external onlyRole(DEFAULT_ADMIN_ROLE) {
    priceFeeds[_erc20] = AggregatorV3Interface(_oracle);
    emit PriceFeedAdded(_erc20, _oracle);
  }

  /**
   * @notice  Sets the threshold of checking last update on the oracle side
   * @dev     Admin function to set updateThreshold
   * @param   _newThreshold   New threshold
   * @param   _collection     The collection we update the threshold for
   */
  function _setUpdateThreshold(uint256 _newThreshold, address _collection) external {
    if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(CREATOR_ROLE, msg.sender)) revert Unauthorized();

    emit ThresholdUpdated(collections[_collection].updateThreshold, _newThreshold, _collection);
    collections[_collection].updateThreshold = _newThreshold;
  }

  error CollectionNotRegistered();

  event PriceFeedAdded(IERC20 indexed _erc20, address indexed _oracle);
  event FloorSubmitted(string _collectionSlug, uint256 _floor, address _submitter);
  /// @notice Emitted when threshold is changed by the admin
  event ThresholdUpdated(uint256 _oldThreshold, uint256 _newThreshold, address _collection);
}

//SPDX-License-Identifier: BUSL-1.1

pragma solidity ^0.8.15;

error Unauthorized();
error AccrueInterestError(Error error);
error WrongParams();
error Unexpected(string error);
error InvalidCoupon();
error ControllerError(Error error);
error AdminError(Error error);
error MarketError(Error error);
error HTokenError(Error error);
error LiquidatorError(Error error);
error ControlPanelError(Error error);
error HTokenFactoryError(Error error);
error PausedAction();
error NotOwner();
error ExternalFailure(string error);
error Initialized();
error Uninitialized();
error OracleNotUpdated();
error TransferError();
error StalePrice();

/**
 * @title   Errors reported across Honey Labs Inc. contracts
 * @author  Honey Labs Inc.
 * @custom:coauthor BowTiedPickle
 * @custom:coauthor m4rio
 */
enum Error {
  UNAUTHORIZED, //0
  INSUFFICIENT_LIQUIDITY,
  INVALID_COLLATERAL_FACTOR,
  MAX_MARKETS_IN,
  MARKET_NOT_LISTED,
  MARKET_ALREADY_LISTED, //5
  MARKET_CAP_BORROW_REACHED,
  MARKET_NOT_FRESH,
  PRICE_ERROR,
  BAD_INPUT,
  AMOUNT_ZERO, //10
  NO_DEBT,
  LIQUIDATION_NOT_ALLOWED,
  WITHDRAW_NOT_ALLOWED,
  INITIAL_EXCHANGE_MANTISSA,
  TRANSFER_ERROR, //15
  COUPON_LOOKUP,
  TOKEN_INSUFFICIENT_CASH,
  BORROW_RATE_TOO_BIG,
  NONZERO_BORROW_BALANCE,
  AMOUNT_TOO_BIG, //20
  AUCTION_NOT_ACTIVE,
  AUCTION_FINISHED,
  AUCTION_NOT_FINISHED,
  AUCTION_BID_TOO_LOW,
  AUCTION_NO_BIDS, //25
  CLAWBACK_WINDOW_EXPIRED,
  CLAWBACK_WINDOW_NOT_EXPIRED,
  REFUND_NOT_OWED,
  TOKEN_LOOKUP_ERROR,
  INSUFFICIENT_WINNING_BID, //30
  TOKEN_DEBT_NONEXISTENT,
  AUCTION_SETTLE_FORBIDDEN,
  NFT20_PAIR_NOT_FOUND,
  NFTX_PAIR_NOT_FOUND,
  TOKEN_NOT_PRESENT, //35
  CANCEL_TOO_SOON,
  AUCTION_USER_NOT_FOUND,
  NOT_FOUND,
  INVALID_MAX_LTV_FACTOR,
  BALANCE_INSUFFICIENT, //40
  ORACLE_NOT_SET,
  MARKET_INVALID,
  FACTORY_INVALID_COLLATERAL,
  FACTORY_INVALID_UNDERLYING,
  FACTORY_INVALID_ORACLE, //45
  FACTORY_DEPLOYMENT_FAILED,
  REPAY_NOT_ALLOWED,
  NONZERO_UNDERLYING_BALANCE,
  INVALID_ACTION,
  ORACLE_IS_PRESENT, //50
  FACTORY_INVALID_UNDERLYING_DECIMALS,
  FACTORY_INVALID_INTEREST_RATE_MODEL
}

{
  "optimizer": {
    "enabled": true,
    "runs": 300
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IERC20","name":"_weth","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"CollectionNotRegistered","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"inputs":[{"internalType":"string","name":"error","type":"string"}],"name":"Unexpected","type":"error"},{"inputs":[],"name":"WrongParams","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"_collectionSlug","type":"string"},{"indexed":false,"internalType":"uint256","name":"_floor","type":"uint256"},{"indexed":false,"internalType":"address","name":"_submitter","type":"address"}],"name":"FloorSubmitted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract IERC20","name":"_erc20","type":"address"},{"indexed":true,"internalType":"address","name":"_oracle","type":"address"}],"name":"PriceFeedAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_oldThreshold","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_newThreshold","type":"uint256"},{"indexed":false,"internalType":"address","name":"_collection","type":"address"}],"name":"ThresholdUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"CREATOR_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SUBMITTER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_erc20","type":"address"},{"internalType":"address","name":"_oracle","type":"address"}],"name":"_addPriceFeed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newThreshold","type":"uint256"},{"internalType":"address","name":"_collection","type":"address"}],"name":"_setUpdateThreshold","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_shouldUnpause","type":"bool"}],"name":"_triggerPause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"collections","outputs":[{"internalType":"bool","name":"paused","type":"bool"},{"internalType":"uint16","name":"twapRange","type":"uint16"},{"internalType":"address","name":"collectionAddress","type":"address"},{"internalType":"uint256","name":"updateThreshold","type":"uint256"},{"internalType":"string","name":"collectionSlug","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"floorPrices","outputs":[{"internalType":"uint96","name":"insertedAt","type":"uint96"},{"internalType":"address","name":"collectionAddress","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint256","name":"lastMean","type":"uint256"},{"internalType":"address","name":"submitter","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_decimals","type":"uint256"}],"name":"getEthPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"},{"internalType":"uint256","name":"_decimals","type":"uint256"}],"name":"getFloorPrice","outputs":[{"internalType":"uint128","name":"","type":"uint128"},{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"},{"internalType":"uint256","name":"_start","type":"uint256"},{"internalType":"uint256","name":"_length","type":"uint256"}],"name":"getFloorPricesForCollection","outputs":[{"components":[{"internalType":"uint96","name":"insertedAt","type":"uint96"},{"internalType":"address","name":"collectionAddress","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint256","name":"lastMean","type":"uint256"},{"internalType":"address","name":"submitter","type":"address"}],"internalType":"struct PermissionlessOracle.FloorPrice[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_collection","type":"address"}],"name":"getLastUpdated","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"getNoOfFloors","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_erc20","type":"address"},{"internalType":"uint256","name":"_decimals","type":"uint256"}],"name":"getUnderlyingPriceInUSD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"name":"priceFeeds","outputs":[{"internalType":"contract AggregatorV3Interface","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"_addresses","type":"address[]"},{"internalType":"string[]","name":"_collectionSlugs","type":"string[]"},{"internalType":"uint16[]","name":"_twapRanges","type":"uint16[]"},{"internalType":"uint256[]","name":"_updateThresholds","type":"uint256[]"}],"name":"registerCollections","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_addresses","type":"address[]"},{"internalType":"uint256[]","name":"_floors","type":"uint256[]"}],"name":"submitFloors","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_collection","type":"address"}],"name":"updateThreshold","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"contract 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eb23fd6bc0add59e62ac25578270cff1b9f619

0000000000000000000000007ceb23fd6bc0add59e62ac25578270cff1b9f619

-----Decoded View---------------
Arg [0] : _weth (address): 0x7ceb23fd6bc0add59e62ac25578270cff1b9f619

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000007ceb23fd6bc0add59e62ac25578270cff1b9f619