// File: @openzeppelin/contracts/proxy/Clones.sol


// OpenZeppelin Contracts (last updated v4.7.0) (proxy/Clones.sol)

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create(0, ptr, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create2(0, ptr, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
            mstore(add(ptr, 0x38), shl(0x60, deployer))
            mstore(add(ptr, 0x4c), salt)
            mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
            predicted := keccak256(add(ptr, 0x37), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address implementation, bytes32 salt)
        internal
        view
        returns (address predicted)
    {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// File: @openzeppelin/contracts/utils/Context.sol


// 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;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/interfaces/ICollection.sol



pragma solidity ^0.8.10;

interface Collection {
    
    function initialize(
        address owner,
        string memory baseTokenURI
    ) external;

    function initialize(
        address owner,
        string memory _name,
        string memory _symbol,
        string memory baseTokenURI
    ) external;

}
// File: @openzeppelin/contracts-upgradeable/utils/introspection/IERC165Upgradeable.sol


// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165Upgradeable {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// File: @openzeppelin/contracts-upgradeable/utils/introspection/ERC165CheckerUpgradeable.sol


// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165Checker.sol)

pragma solidity ^0.8.0;


/**
 * @dev Library used to query support of an interface declared via {IERC165}.
 *
 * Note that these functions return the actual result of the query: they do not
 * `revert` if an interface is not supported. It is up to the caller to decide
 * what to do in these cases.
 */
library ERC165CheckerUpgradeable {
    // As per the EIP-165 spec, no interface should ever match 0xffffffff
    bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;

    /**
     * @dev Returns true if `account` supports the {IERC165} interface,
     */
    function supportsERC165(address account) internal view returns (bool) {
        // Any contract that implements ERC165 must explicitly indicate support of
        // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
        return
            _supportsERC165Interface(account, type(IERC165Upgradeable).interfaceId) &&
            !_supportsERC165Interface(account, _INTERFACE_ID_INVALID);
    }

    /**
     * @dev Returns true if `account` supports the interface defined by
     * `interfaceId`. Support for {IERC165} itself is queried automatically.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
        // query support of both ERC165 as per the spec and support of _interfaceId
        return supportsERC165(account) && _supportsERC165Interface(account, interfaceId);
    }

    /**
     * @dev Returns a boolean array where each value corresponds to the
     * interfaces passed in and whether they're supported or not. This allows
     * you to batch check interfaces for a contract where your expectation
     * is that some interfaces may not be supported.
     *
     * See {IERC165-supportsInterface}.
     *
     * _Available since v3.4._
     */
    function getSupportedInterfaces(address account, bytes4[] memory interfaceIds)
        internal
        view
        returns (bool[] memory)
    {
        // an array of booleans corresponding to interfaceIds and whether they're supported or not
        bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);

        // query support of ERC165 itself
        if (supportsERC165(account)) {
            // query support of each interface in interfaceIds
            for (uint256 i = 0; i < interfaceIds.length; i++) {
                interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
            }
        }

        return interfaceIdsSupported;
    }

    /**
     * @dev Returns true if `account` supports all the interfaces defined in
     * `interfaceIds`. Support for {IERC165} itself is queried automatically.
     *
     * Batch-querying can lead to gas savings by skipping repeated checks for
     * {IERC165} support.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
        // query support of ERC165 itself
        if (!supportsERC165(account)) {
            return false;
        }

        // query support of each interface in _interfaceIds
        for (uint256 i = 0; i < interfaceIds.length; i++) {
            if (!_supportsERC165Interface(account, interfaceIds[i])) {
                return false;
            }
        }

        // all interfaces supported
        return true;
    }

    /**
     * @notice Query if a contract implements an interface, does not check ERC165 support
     * @param account The address of the contract to query for support of an interface
     * @param interfaceId The interface identifier, as specified in ERC-165
     * @return true if the contract at account indicates support of the interface with
     * identifier interfaceId, false otherwise
     * @dev Assumes that account contains a contract that supports ERC165, otherwise
     * the behavior of this method is undefined. This precondition can be checked
     * with {supportsERC165}.
     * Interface identification is specified in ERC-165.
     */
    function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {
        bytes memory encodedParams = abi.encodeWithSelector(IERC165Upgradeable.supportsInterface.selector, interfaceId);
        (bool success, bytes memory result) = account.staticcall{gas: 30000}(encodedParams);
        if (result.length < 32) return false;
        return success && abi.decode(result, (bool));
    }
}

// File: @openzeppelin/contracts-upgradeable/token/ERC1155/IERC1155Upgradeable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;


/**
 * @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 IERC1155Upgradeable is IERC165Upgradeable {
    /**
     * @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;
}

// File: @openzeppelin/contracts-upgradeable/interfaces/IERC1155Upgradeable.sol


// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1155.sol)

pragma solidity ^0.8.0;


// File: @openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;


/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * 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: 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 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);
}

// File: @openzeppelin/contracts-upgradeable/interfaces/IERC721Upgradeable.sol


// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721.sol)

pragma solidity ^0.8.0;


// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// 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);
}

// File: @openzeppelin/contracts/interfaces/IERC20.sol


// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;


// File: @openzeppelin/contracts/utils/introspection/IERC165.sol


// 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);
}

// File: @openzeppelin/contracts/interfaces/IERC2981.sol


// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;


/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 *
 * _Available since v4.5._
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

// File: @openzeppelin/contracts/token/ERC1155/IERC1155.sol


// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;


/**
 * @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;
}

// File: @openzeppelin/contracts/interfaces/IERC1155.sol


// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1155.sol)

pragma solidity ^0.8.0;


// File: @openzeppelin/contracts/token/ERC721/IERC721.sol


// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;


/**
 * @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: 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 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);
}

// File: @openzeppelin/contracts/interfaces/IERC721.sol


// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721.sol)

pragma solidity ^0.8.0;


// File: contracts/AuctionHouse.sol



pragma solidity 0.8.10;











contract AuctionHouse is Ownable {
    using ERC165CheckerUpgradeable for address;

    mapping(address => bool) public isAdmin;
    mapping(address => bool) public isBlacklisted;
    mapping(address => bool) public isCollectionSupported;

    mapping(address => uint256) public staked;
    mapping(address => uint256) public stakeTime;
    mapping(address => uint256) public accumulatedSales;
    

    uint256 public serviceFee = 1500; //15%
    uint256 public constant MAX_SERVICE_FEE = 5000; //50%
    uint256 public minimumStakeAmount = 100E18;
    uint256 public lockTime = 7 days;

    address public erc721Implementation;
    address public erc1155Implementation;
    address public iAI;
    address public WETH;// = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    Listing[] listings;

    struct Listing {
        address listingAdmin;
        address seller;
        address tokenOwner;
        address highestBidder;
        address nftAddress;
        uint256 tokenID;
        uint256 numberOfTokens;
        uint256 price;
        bool in_iAI;
        uint256 duration;
        uint256 endTime;
        bool isExclusive;
        bool isActive;
        uint256 whitelistCount;
    }

    mapping(uint256 => mapping(address => bool)) public whitelist;

    event ListingCreated(uint256 indexed listingID, address nftAddress, uint256 tokenID, uint256 numberOfTokens, bool isERC721, bool indexed in_iAI);
    event ListingUpdated(uint256 indexed listingID, uint256 newDuration, uint256 newPrice);
    event ListingCancelled(uint256 indexed listingID);
    event BidPlaced(uint256 indexed indexID, uint256 indexed price, uint256 indexed endTime, address highestBidder);
    event ERC721CollectionDeployed(address cloneAddress, string name, string symbol, address owner);
    event ERC1155CollectionDeployed(address cloneAddress, address owner);

    modifier onlyAdmin() {
        require(isAdmin[msg.sender], "Denied: Not an Admin.");
        _;
    }

    constructor(address _iAI, address _WETH, address _erc721Implementation, address _erc1155Implementation) {
        isAdmin[msg.sender] = true;
        iAI = _iAI;
        erc721Implementation = _erc721Implementation;
        erc1155Implementation = _erc1155Implementation;
        WETH = _WETH;
    }

    function stake(uint256 amount) external returns(uint256) {
        IERC20(iAI).transferFrom(msg.sender, address(this), amount);
        stakeTime[msg.sender] = block.timestamp;
        staked[msg.sender] += amount;
        return staked[msg.sender];
    }

    function unstake(uint256 amount) external returns(uint256) {
        require(block.timestamp >= stakeTime[msg.sender] + lockTime, "Tokens are still locked.");
        staked[msg.sender] -= amount;
        IERC20(iAI).transfer(msg.sender, amount);
        return staked[msg.sender];
    }

    function listNFT(address _nftAddress, uint256 _tokenID, uint256 _numberOfTokens, address _seller, address _tokenOwner, uint256 _startingPrice, bool _in_iAI, uint256 _duration, bool _isExclusive, address[] memory userWhitelist) external onlyAdmin {
        require(isCollectionSupported[_nftAddress], "NFT Collection not supported.");
        
        bool isERC721 = (_nftAddress.supportsInterface(type(IERC721).interfaceId) || 
            _nftAddress.supportsInterface(type(IERC721Upgradeable).interfaceId));
        uint256 numTokens = isERC721 ? 1 : _numberOfTokens;

        listings.push(Listing({
            listingAdmin: msg.sender,
            seller: _seller,
            tokenOwner: _tokenOwner,
            highestBidder: address(0),
            nftAddress: _nftAddress,
            tokenID: _tokenID,
            numberOfTokens: numTokens,
            price: _startingPrice,
            in_iAI: _in_iAI,
            duration: _duration,
            endTime: 0,
            isExclusive: _isExclusive,
            isActive: true,
            whitelistCount: 0
        }));
        
        uint256 listingID = listings.length-1;

        if (userWhitelist.length != 0) {
            _addToListingWhitelist(listingID, userWhitelist);
        }
        
        if (isERC721) {
            IERC721Upgradeable(_nftAddress).safeTransferFrom(_tokenOwner, address(this), _tokenID);
        } else {
            IERC1155Upgradeable(_nftAddress).safeTransferFrom(_tokenOwner, address(this), _tokenID, _numberOfTokens, '');
        }
        
        emit ListingCreated( listingID, _nftAddress, _tokenID, numTokens, isERC721, _in_iAI);
    }

    function bid(uint256 listingID, uint256 amount) external {
        Listing storage listing = listings[listingID];
        require(listing.isActive, 'Listing not active');
        require(listing.endTime == 0 || block.timestamp < listing.endTime, 'Listing has expired');
        require(!isBlacklisted[msg.sender], 'User is blacklisted');
        
        if (listing.isExclusive) {
            require(staked[msg.sender] >= minimumStakeAmount, 'Exclusive auction: not enough tokens staked');
        }
        if (listing.whitelistCount != 0) {
            require(whitelist[listingID][msg.sender], 'Caller is not whitelisted for this Listing');
        }
        
        address previousBidder = listing.highestBidder;
        uint256 previousBidAmount = listing.price;

        if (listing.endTime == 0) {
            require(amount >= listing.price);
            listing.endTime = block.timestamp + listing.duration; 
        } else {
            require(amount >= listing.price * 110 / 100, 'Bid must be 10% higher');
        }

        listing.highestBidder = msg.sender;
        listing.price = amount;

        //Extend end time to 15 minutes if less than 15 minutes are remaining during a bid.
        uint256 extendedTime = block.timestamp + 900;
        if (extendedTime > listing.endTime) {
            listing.endTime = extendedTime;
        }
        
        //Transfer bid amount and refund previous bidder
        if(listing.in_iAI) {
            IERC20(iAI).transferFrom(msg.sender, address(this), amount);
            if (previousBidder != address(0)) {
                IERC20(iAI).transfer(previousBidder, previousBidAmount);
            }
        } else {
            IERC20(WETH).transferFrom(msg.sender, address(this), amount);
            if (previousBidder != address(0)) {
                IERC20(WETH).transfer(previousBidder, previousBidAmount);
            }
        }

        emit BidPlaced(listingID, listing.price, listing.endTime, listing.highestBidder);
    }

    function claimNFT(uint256 listingID) external {
        Listing storage listing = listings[listingID];
        require(msg.sender == listing.highestBidder, 'Not the highest bidder');
        require(block.timestamp > listing.endTime, 'Auction has not ended yet');
        require(listing.isActive, 'listing is not active');
        listing.isActive = false;

        uint256 sellerAmt = listing.price;

        //royalties, if any
        address royaltyReceiver;
        uint256 royaltyAmount;
        if (listing.nftAddress.supportsInterface(type(IERC2981).interfaceId)) {
            (royaltyReceiver, royaltyAmount) = IERC2981(listing.nftAddress).royaltyInfo(listing.tokenID, listing.price);
            if (royaltyReceiver != address(0)) {
                sellerAmt -= royaltyAmount;
            }
        }
        
        //service fee
        uint256 serviceAmount = listing.price * serviceFee / 10000;
        sellerAmt -= serviceAmount;
        

        //checking how to transfer
        if (listing.nftAddress.supportsInterface(type(IERC721).interfaceId) || listing.nftAddress.supportsInterface(type(IERC721Upgradeable).interfaceId)) {
            IERC721(listing.nftAddress).safeTransferFrom(address(this), msg.sender, listing.tokenID);
        } else {
            IERC1155(listing.nftAddress).safeTransferFrom(address(this), msg.sender, listing.tokenID, listing.numberOfTokens, '');
        }


        if(listing.in_iAI) {
            if (royaltyReceiver != address(0)) {
                IERC20(iAI).transfer(royaltyReceiver, royaltyAmount);
            }
            IERC20(iAI).transfer(owner(), serviceAmount);
            IERC20(iAI).transfer(listing.seller, sellerAmt);

        } else {
            if (royaltyReceiver != address(0)) {
                IERC20(WETH).transfer(royaltyReceiver, royaltyAmount);
            }
            IERC20(WETH).transfer(owner(), serviceAmount);
            IERC20(WETH).transfer(listing.seller, sellerAmt);
        }
    }

    function cancelListing(uint256 listingID) external onlyAdmin {
        Listing storage listing = listings[listingID];
        require(listing.listingAdmin == msg.sender, 'Not the Listing manager.');
        require(listing.isActive, 'Listing is not active.');
        require(listing.endTime == 0, 'Listing already started');
        
        listing.isActive = false;
        listing.endTime = 1;

        if (listing.nftAddress.supportsInterface(type(IERC721).interfaceId) || listing.nftAddress.supportsInterface(type(IERC721Upgradeable).interfaceId)) {
            IERC721Upgradeable(listing.nftAddress).safeTransferFrom(address(this), listing.tokenOwner, listing.tokenID);
        } else {
            IERC1155(listing.nftAddress).safeTransferFrom(address(this), listing.tokenOwner, listing.tokenID, listing.numberOfTokens, '');
        }

        emit ListingCancelled( listingID );
    }

    function updateListing(uint256 listingID, uint256 newDuration, uint256 newPrice) external onlyAdmin {
        Listing storage listing = listings[listingID];
        require(listing.listingAdmin == msg.sender, 'Caller is not the Listing manager.');
        require(listing.endTime == 0, 'Listing has already started.');
        require(listing.isActive, 'Listing is not Active');
        
        listing.duration = newDuration;
        listing.price = newPrice;

        emit ListingUpdated( listingID, newDuration, newPrice );

    }

    function addToListingWhitelist(uint256 listingID, address[] memory userWhitelist) external onlyAdmin {
        require(listings[listingID].listingAdmin == msg.sender, 'Caller is not the Listing manager.');
        _addToListingWhitelist(listingID, userWhitelist);
    }


    function _addToListingWhitelist(uint256 listingID, address[] memory userWhitelist) internal {
        Listing storage listing = listings[listingID];

        for(uint256 i = 0; i < userWhitelist.length; i++) {
            require(!whitelist[listingID][userWhitelist[i]], 'user already whitelisted');
            whitelist[listingID][userWhitelist[i]] = true;
        }

        listing.whitelistCount += userWhitelist.length;
    }


    function removeFromListingWhitelist(uint256 listingID, address[] memory userWhitelist) external onlyAdmin {
        require(listings[listingID].listingAdmin == msg.sender, 'Caller is not the Listing manager.');
        _removeFromListingWhitelist(listingID, userWhitelist);
    }


    function _removeFromListingWhitelist(uint256 listingID, address[] memory userWhitelist) internal {
        Listing storage listing = listings[listingID];

        for(uint256 i = 0; i < userWhitelist.length; i++) {
            require(whitelist[listingID][userWhitelist[i]], 'user is not currently whitelisted');
            whitelist[listingID][userWhitelist[i]] = false;
        }

        listing.whitelistCount -= userWhitelist.length;
    }


    function createERC721Collection(
        string memory _name,
        string memory _symbol,
        string memory _baseTokenURI
    ) external onlyAdmin returns (address clone) {
        clone = Clones.clone(erc721Implementation);
        Collection(clone).initialize(
            msg.sender,
            _name,
            _symbol,
            _baseTokenURI
        );

        isCollectionSupported[clone] = true;


        emit ERC721CollectionDeployed(clone, _name, _symbol, msg.sender);
    }

    function createERC1155Collection(
        string memory _baseTokenURI
    ) external onlyAdmin returns (address clone) {
        clone = Clones.clone(erc1155Implementation);
        Collection(clone).initialize(
            msg.sender,
            _baseTokenURI
        );

        isCollectionSupported[clone] = true;

        emit ERC1155CollectionDeployed(clone, msg.sender);
    }

    function isUserWhitelisted(uint256 listingID, address user) public view returns(bool){
        return whitelist[listingID][user];
    }

    function getListingInfo(uint256 listingID) public view returns(Listing memory listing) {
        return listings[listingID];
    }

    function isNFTCollectionSupported(address nftAddress) public view returns (bool){
        return isCollectionSupported[nftAddress];
    }

    function onERC721Received(address, address, uint256, bytes memory) public virtual returns (bytes4) {
        return this.onERC721Received.selector;
    }

    function onERC1155Received(address, address, uint256, uint256, bytes memory) public virtual returns (bytes4) {
        return this.onERC1155Received.selector;
    }

    function setAdmin(address user, bool setting) external onlyOwner {
        require(isAdmin[user] != setting, "Already added/removed.");
        isAdmin[user] = setting;
    }

    function setBlacklisted(address user, bool blacklisted) external onlyOwner {
        require(isBlacklisted[user] != blacklisted, "Already added/removed.");
        isBlacklisted[user] = blacklisted;
    }

    function setCollectionSupported(address nftAddress, bool supported) external onlyOwner {
        require(isCollectionSupported[nftAddress] != supported, "Already added/removed.");
        isCollectionSupported[nftAddress] = supported;
    }

    function setServiceFee(uint256 newServiceFee) external onlyOwner {
        require(newServiceFee <= MAX_SERVICE_FEE, "Too High.");
        serviceFee = newServiceFee;
    }

    function setMinimumStakeAmount(uint256 newStakeAmount) external onlyOwner {
        minimumStakeAmount = newStakeAmount;
    }

    function setLockTime(uint256 newLockTime) external onlyOwner {
        require(newLockTime <= 30 days);
        lockTime = newLockTime;
    }

    function updateListingAdmin(uint256 listingID, address newAdmin) external onlyOwner {
        listings[listingID].listingAdmin = newAdmin;
    }

    function updateERC721Implementation(address newImplementation) external onlyOwner {
        erc721Implementation = newImplementation;
    }

    function updateERC1155Implementation(address newImplementation) external onlyOwner {
        erc1155Implementation = newImplementation;
    }

}