Contract 0xfa863605382a8a334ea2657ae4b0cf9d80c4c38c

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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, _msgSender());
        _;
    }

    /**
     * @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 override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @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 {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " 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 override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (access/Ownable.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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 Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

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

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        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 v4.4.0 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Address.sol)

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "./utils/INFTVault.sol";
import "./utils/INFTRenting.sol";

contract InstallmentNFT is Ownable, AccessControl, ReentrancyGuard {
    using SafeERC20 for IERC20;

    address public nakaTokenAddress;
    address public rentingAddress;
    address public nftVaultAddress;
    bool internal _paused;

    bytes32 public constant WORKER_ROLE = keccak256("WORKER_ROLE");

    event OrderCreatedInstallmentNFT(bytes32 orderId, address indexed seller, address nftAddress ,uint256 tokenID ,uint256 price);
    event OrderCancelledInstallmentNFT(bytes32 orderId, address indexed seller, address nftAddress , uint256 tokenID, uint256 price);
    event EditOrderInstallmentNFT(bytes32 orderId,uint256 Price);
    
    event executedOrderInstallmentNFT(
    bytes32 billId, 
    address indexed buyer, 
    address indexed seller,
    address nftAddress
    );

    event executedOrderInstallmentNFT_Details(
    bytes32 billId, 
    uint256 price ,
    uint256 period,
    uint256 periodBalance,
    uint256 prePay,
    uint256 totalBill,
    uint256 billBalance,
    uint256 payByperiod
    );

    event PayBill(
    bytes32 billId, 
    address indexed buyer, 
    address indexed seller, 
    uint256 periodBalance,
    uint256 billBalance,
    uint256 nakaAmount
    );
    
    event BillCancelledInstallmentNFT(
    bytes32 billId, 
    address indexed buyer, 
    address indexed seller,
    address nftAddress,
    uint256 tokenID,
    uint256 price ,
    uint256 period,
    uint256 periodBalance,
    uint256 totalBill,
    uint256 billBalance,
    uint256 payByperiod
    );

    event InstallmentPaused();
    event InstallmentUnpaused();

    struct Order {
        bytes32 id;
        address nftAddress;
        uint256 tokenId;
        address seller;
        uint256 price;
    }
    mapping (address => mapping(bytes32 => Order)) public orderByOrderId;

    struct AddressOrderIdInstallmentNFT {
        bytes32 id;
        address seller;
    }

    mapping (address => mapping(uint256 => AddressOrderIdInstallmentNFT)) public orderIdByNFT;
    
    struct Bill {
        bytes32 billId;
        address buyer;
        address seller;
        address nftAddress;
        uint256 tokenId;
        uint256 price;
        uint256 period;
        uint256 periodBalance;
        uint256 prePay;
        uint256 totalBill;
        uint256 billBalance;
        uint256 payByperiod;
    } 
  
    mapping (address => mapping(bytes32 => Bill)) public billByBillId;

    struct AddressBillId {
        bytes32 billId;
        address buyer;
        address seller;
    }

    mapping (address => mapping(uint256 => AddressBillId)) public billIdByNFT;
    

    constructor(
        address _nakaTokenAddress,
        address _nftVaultAddress
    ) {
        nakaTokenAddress = _nakaTokenAddress;
        nftVaultAddress = _nftVaultAddress;
        _setupRole(DEFAULT_ADMIN_ROLE,msg.sender);
   }

    modifier checkOnRenting(address _nftAddress,uint256 _tokenID) {
        INFTRenting.CheckDetail  memory check = INFTRenting(rentingAddress).CheckDetails(_nftAddress,_tokenID);
        require(check.owner != msg.sender, "[Installment.checkOnRenting] NFT already listed on NFTRenting contract.");
        _;
    }
    /**
    * @dev Modifier to only allow the function to be executed when it isn't paused.
    */
    modifier whenInstallmentNotPaused() {
        require(!_paused, "[Installment.whenInstallmentNotPaused] Not Paused");
        _;
    }

    /**
    * @dev Modifier to only allow the function to be executed when it is paused.
    */
    modifier whenInstallmentPaused() {
        require(_paused, "[Installment.whenInstallmentPaused] Paused");
        _;
    }
    /**
     * @dev Create order for selling NFT installment
     * Emit details of createded Order.
     * Seller need to setApprovallForAll this contract in NFT contract for begin createOrder.
     * @param _nftAddress - NFT address for selling.
     * @param _tokenId - id NFT for selling.
     * @param _price - Naka token amount of each items user want to sell.
     */
    function createOrderInstallmentNFT (address _nftAddress,uint256 _tokenId, uint256 _price) external checkOnRenting(_nftAddress,_tokenId) whenInstallmentNotPaused {
            bytes32 _orderId = keccak256(
                abi.encodePacked(
                block.timestamp,
                msg.sender,
                _nftAddress,
                _tokenId,
                _price
            )
        );
        orderByOrderId[msg.sender][_orderId] = Order({
            id: _orderId,
            seller: msg.sender,
            nftAddress: _nftAddress,
            tokenId : _tokenId,
            price: _price
        });
        orderIdByNFT[_nftAddress][_tokenId] = AddressOrderIdInstallmentNFT({
            id: _orderId,
            seller: msg.sender
        });

        address Owner = msg.sender;
        INFTVault(nftVaultAddress).receivIn721(_nftAddress,_tokenId,Owner);
        IERC721(_nftAddress).safeTransferFrom(msg.sender,nftVaultAddress,_tokenId);
       
        emit OrderCreatedInstallmentNFT(_orderId, msg.sender, _nftAddress, _tokenId, _price);

    }
     /**
     * @dev execute NFT for buyer to want to buy NFT installment payment.
     * Emit details of purchase.
     * Buyer need to approve this contract in Naka token contract for buy NFT and prepay.
     * @param _sellerAccount - seller's address.
     * @param _orderId - order id of order.
     * @param _period - period of installment payment.
     */
    function executeOrderInstallmentNFT(address _sellerAccount, bytes32 _orderId , uint256 _period) external whenInstallmentNotPaused{
        Order memory order = orderByOrderId[_sellerAccount][_orderId];
        require(order.id != 0, "[Installment.purchaseInstallmentNFT] Order not found.");
        require(order.seller != msg.sender,"[Installment.purchaseInstallmentNFT] Can't buy this order.");
        require(_period % 3 == 0 &&  _period >= 6 && _period <= 24, "[Installment.purchaseInstallmentNFT] Period must be more than or equal to 6 and mod 3 = 0");
        uint periods = _period - 1;
        uint calculatedInterestRate;
        uint totalInterest;

        calculatedInterestRate = (_period / 3) + 3 + (4 * (_period - 6)/3);
        totalInterest = (order.price * calculatedInterestRate) / 100;

        uint totalbill = order.price + totalInterest;
        uint totalBillPayByperiod  = totalbill / _period;
        uint prepay = (totalBillPayByperiod * 40) /30;
        uint totalbillbalance = totalbill - prepay ;
         
        IERC20 token = IERC20(nakaTokenAddress);
        token.safeTransferFrom(msg.sender,order.seller,prepay);

        bytes32 _billId = keccak256(
                abi.encodePacked(
                block.timestamp,
                 msg.sender,
                 order.nftAddress,
                 order.tokenId,
                 order.price
            )
        );
        billByBillId[msg.sender][_billId] = Bill({
            billId : _billId,
            buyer : msg.sender,
            seller : _sellerAccount,
            nftAddress : order.nftAddress,
            tokenId: order.tokenId,
            price :order.price,
            period : _period,
            periodBalance:periods,
            prePay:prepay,
            totalBill:totalbill,
            billBalance:totalbillbalance,
            payByperiod:totalBillPayByperiod
        });
        billIdByNFT[order.nftAddress][order.tokenId] = AddressBillId({
            billId : _billId,
            buyer : msg.sender,
            seller : _sellerAccount
        });
        
        delete orderByOrderId[order.seller][_orderId];
        delete orderIdByNFT[order.nftAddress][order.tokenId];

        emit executedOrderInstallmentNFT(_billId, msg.sender, _sellerAccount, order.nftAddress);
        emit executedOrderInstallmentNFT_Details(_billId, order.price,_period, periods, prepay, totalbill, totalbillbalance, totalBillPayByperiod);
    }

    /**
     * @dev purchase NFT for buyer to want to buy NFT installment payment.
     * Emit details of purchase.
     * @param _billId - bill id of buyer for paybill.
     * @param _period - period of installment payment.
     */
    function payBillInstallmentNFT(bytes32 _billId , uint256 _period) external whenInstallmentNotPaused {
        Bill memory bill = billByBillId[msg.sender][_billId];

        require(bill.billId != 0, "[Installment.payBillInstallmentNFT] Bill not found.");
        require(_period != 0 , "[Installment.payBillInstallmentNFT] Period is not correct");
        require(bill.periodBalance >=  _period , "[Installment.payBillInstallmentNFT] Period is not correct");
        require(bill.buyer ==  msg.sender, "[Installment.payBillInstallmentNFT] Only buyer of installment contract can pay the bill");
        uint totalPay;
        IERC20 token = IERC20(nakaTokenAddress);

        if(bill.periodBalance == _period){
            totalPay = bill.billBalance;
            token.safeTransferFrom(msg.sender,bill.seller,totalPay);
        }else if(bill.periodBalance == 1 ){
            totalPay = bill.payByperiod - (bill.payByperiod*10)/30;
            token.safeTransferFrom(msg.sender,bill.seller,totalPay);
        } else{
            uint Pay = bill.payByperiod * _period;
            totalPay = Pay;
            token.safeTransferFrom(msg.sender,bill.seller,totalPay);
        }
        bill.billBalance -= totalPay;
        bill.periodBalance -= _period;
        emit PayBill(_billId, msg.sender ,bill.seller,bill.periodBalance,bill.billBalance,totalPay);
        if(bill.periodBalance == 0){
            INFTVault(nftVaultAddress).transferOut721(bill.nftAddress,bill.tokenId,bill.buyer);
            delete billByBillId[msg.sender][_billId];
            delete billIdByNFT[bill.nftAddress][bill.tokenId];
        }
    }
     /**
     * @dev Cancel order for seller want to cancel order.
     * Emit details of canceled Order.
     * @param _orderId - order id of order.
     */
     
    function cancelOrderInstallmentNFT(bytes32 _orderId) external  whenInstallmentNotPaused{
        Order memory order = orderByOrderId[msg.sender][_orderId];
        require(order.id != 0, "[Installment.cancelOrder] Order not found.");
        require(order.seller == msg.sender, "[Installment.cancelOrder] Unauthorized user.");
        INFTVault(nftVaultAddress).transferOut721(order.nftAddress,order.tokenId,order.seller);
        delete orderByOrderId[order.seller][_orderId];
        delete orderIdByNFT[order.nftAddress][order.tokenId];
        emit OrderCancelledInstallmentNFT(order.id, order.seller, order.nftAddress,order.tokenId,order.price);
    }

     function editOrderInstallmentNFT(bytes32 _orderId,uint256 _price) external  whenInstallmentNotPaused{
        Order memory order = orderByOrderId[msg.sender][_orderId];
        require(order.id != 0, "[Installment.cancelOrder] Order not found.");
        require(order.seller == msg.sender, "[Installment.cancelOrder] Unauthorized user.");
        order.price = _price;
        emit  EditOrderInstallmentNFT(_orderId,_price);
    }

      /**
     * @dev Cancel bill for seller or buyer want to cancel bill.
     * Emit details of canceled bill.
     * @param _buyerAccount - buyer's address.
     * @param _billId - bill id of buyer for paybill.
     */
      function cancelBillInstallmentNFT(address _buyerAccount ,bytes32 _billId) external onlyRole(WORKER_ROLE) whenInstallmentNotPaused {
        Bill memory bill = billByBillId[_buyerAccount][_billId];
        require(bill.billId != 0, "[Installment.cancelBill] Bill not found.");
        INFTVault(nftVaultAddress).transferOut721(bill.nftAddress,bill.tokenId,bill.seller);
        delete billByBillId[_buyerAccount][_billId];
        delete billIdByNFT[bill.nftAddress][bill.tokenId];
        emit BillCancelledInstallmentNFT(bill.billId,bill.buyer, bill.seller, bill.nftAddress,bill.tokenId,
        bill.price,bill.period,bill.periodBalance,bill.totalBill,bill.billBalance,bill.payByperiod);
    }

    function setRenting(address _rentingAddress) external onlyOwner{
        rentingAddress = _rentingAddress;
    }
    
    /**
    * @dev Function to pause functions in this contract.
    * can only be called by the creator of contract.
    */
    function pauseInstallment() external onlyOwner whenInstallmentNotPaused {
        _paused = true;
        emit InstallmentPaused();
    }

    /**
    * @dev Function to unpause functions in this contract.
    * can only be called by the creator of contract.
    */
    function unpauseInstallment() external onlyOwner whenInstallmentPaused {
        _paused = false;
        emit InstallmentUnpaused();
    }

 
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;

interface INFTRenting{

    struct CheckDetail {
        bytes32 orderIdRentingNFT;
        address owner;
    }
    function CheckDetails (address _nftAddres ,uint256 _tokenId) external view returns (CheckDetail  memory);

}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;

interface INFTVault{

 function receivIn721(address _NftAddress,uint256 _tokenID,address _owner) external ;
 function transferOut721(address _NftAddress,uint256 _tokenID,address _to) external ;
 function getOwner721(address NftAddress,uint256 tokenID) external view returns (address);
 function receivIn1155(address _NftAddress, uint256 _tokenID, uint256 _amount ,address _owner,bytes memory _data) external ;
 function transferOut1155(address _NftAddress, uint256 _tokenID,uint256 _amount,address _to, bytes memory _data) external ;
 function receivBatchIn1155(address _NftAddress, uint256[] memory _tokenID, uint256[] memory _amount, bytes memory _data, address _owner) external;
 function transferBatchOut1155(address _NftAddress, address _to, uint256[] memory _tokenID, uint256[] memory _amount, bytes memory _data) external ;
 function getOwner1155(address NftAddress,uint256 tokenID) external view returns (address);
 
 

     
 

}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"_nakaTokenAddress","type":"address"},{"internalType":"address","name":"_nftVaultAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"billId","type":"bytes32"},{"indexed":true,"internalType":"address","name":"buyer","type":"address"},{"indexed":true,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"address","name":"nftAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenID","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"period","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"periodBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalBill","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"billBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"payByperiod","type":"uint256"}],"name":"BillCancelledInstallmentNFT","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"orderId","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"Price","type":"uint256"}],"name":"EditOrderInstallmentNFT","type":"event"},{"anonymous":false,"inputs":[],"name":"InstallmentPaused","type":"event"},{"anonymous":false,"inputs":[],"name":"InstallmentUnpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"orderId","type":"bytes32"},{"indexed":true,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"address","name":"nftAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenID","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"OrderCancelledInstallmentNFT","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"orderId","type":"bytes32"},{"indexed":true,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"address","name":"nftAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenID","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"OrderCreatedInstallmentNFT","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"billId","type":"bytes32"},{"indexed":true,"internalType":"address","name":"buyer","type":"address"},{"indexed":true,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"uint256","name":"periodBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"billBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"nakaAmount","type":"uint256"}],"name":"PayBill","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":"bytes32","name":"billId","type":"bytes32"},{"indexed":true,"internalType":"address","name":"buyer","type":"address"},{"indexed":true,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"address","name":"nftAddress","type":"address"}],"name":"executedOrderInstallmentNFT","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"billId","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"period","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"periodBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"prePay","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalBill","type":"uint2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uts":[],"name":"pauseInstallment","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_billId","type":"bytes32"},{"internalType":"uint256","name":"_period","type":"uint256"}],"name":"payBillInstallmentNFT","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","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":[],"name":"rentingAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","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":"_rentingAddress","type":"address"}],"name":"setRenting","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":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpauseInstallment","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000002b7623690fc399cdce28f4a60dfb64e75697db8d000000000000000000000000721ffa26b1b484cfb857a4b4687289b579ab1b2d

-----Decoded View---------------
Arg [0] : _nakaTokenAddress (address): 0x2b7623690fc399cdce28f4a60dfb64e75697db8d
Arg [1] : _nftVaultAddress (address): 0x721ffa26b1b484cfb857a4b4687289b579ab1b2d

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000002b7623690fc399cdce28f4a60dfb64e75697db8d
Arg [1] : 000000000000000000000000721ffa26b1b484cfb857a4b4687289b579ab1b2d