// Verified using https://dapp.tools

// hevm: flattened sources of src/NFTdump.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.9.0;

////// lib/openzeppelin-contracts/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;
    }
}

////// lib/openzeppelin-contracts/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (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);
    }
}

////// lib/openzeppelin-contracts/contracts/security/Pausable.sol
// OpenZeppelin Contracts v4.4.1 (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());
    }
}

////// lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol
// OpenZeppelin Contracts v4.4.1 (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;
    }
}

////// src/NFTdump.sol
/* pragma solidity >=0.8.0 <0.9.0; */

/* import "../lib/openzeppelin-contracts/contracts/access/Ownable.sol"; */
/* import "../lib/openzeppelin-contracts/contracts/security/Pausable.sol"; */
/* import "../lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol"; */

interface ERCBase {
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
    function isApprovedForAll(address account, address operator) external view returns (bool);
}

interface ERC721Partial is ERCBase {
    function transferFrom(address from, address to, uint256 tokenId) external;
}

interface ERC1155Partial is ERCBase {
    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata) external;
}

contract NFTdump is ReentrancyGuard, Pausable, Ownable {

    bytes4 _ERC721 = 0x80ac58cd;
    bytes4 _ERC1155 = 0xd9b67a26;

    address public barn = address(0);
    uint256 public defaultPrice = 1 gwei;
    uint256 public maxTokensPerTx = 100;

    mapping (address => uint256) private _contractPrices;

    function setBarn(address _barn) onlyOwner public {
        barn = _barn;
    }

    function setDefaultPrice(uint256 _defaultPrice) onlyOwner public {
        defaultPrice = _defaultPrice;
    }

    function setMaxTokensPerTx(uint256 _maxTokensPerTx) onlyOwner public {
        maxTokensPerTx = _maxTokensPerTx;
    }

    function setPriceByContract(address contractAddress, uint256 price) onlyOwner public {
        _contractPrices[contractAddress] = price;
    }

    function pause() onlyOwner public {
        _pause();
    }

    function unpause() onlyOwner public {
        _unpause();
    }

    function _getPrice(address contractAddress) internal view returns (uint256) {
        if (_contractPrices[contractAddress] > 0)
            return _contractPrices[contractAddress];
        else
            return defaultPrice;
    }

    function batchTransfer(address[] calldata tokenContracts, uint256[] calldata tokenIds, uint256[] calldata counts) external whenNotPaused {
        require(barn != address(0), "Barn cannot be the 0x0 address");
        require(tokenContracts.length > 0, "Must have 1 or more token contracts");
        require(tokenContracts.length == tokenIds.length && tokenIds.length == counts.length, "All params must have equal length");

        ERCBase tokenContract;
        uint256 totalTokens = 0;
        uint256 totalPrice = 0;

        for (uint256 i = 0; i < tokenContracts.length; i++) {
            require(counts[i] > 0, "Token count must be greater than zero.");

            tokenContract = ERCBase(tokenContracts[i]);

            if (tokenContract.supportsInterface(_ERC721)) {
                totalTokens += 1;
                totalPrice += _getPrice(tokenContracts[i]);
            }
            else if (tokenContract.supportsInterface(_ERC1155)) {
                totalTokens += counts[i];
                totalPrice += _getPrice(tokenContracts[i]) * counts[i];
            }
            else {
                continue;
            }

            require(totalTokens < maxTokensPerTx, "Maximum token count reached.");
            require(address(this).balance > totalPrice, "Not enough ether in contract.");
            require(tokenContract.isApprovedForAll(msg.sender, address(this)), "Token not yet approved for all transfers");

            if (tokenContract.supportsInterface(_ERC721)) {
                ERC721Partial(tokenContracts[i]).transferFrom(msg.sender, barn, tokenIds[i]);
            }
            else {
                ERC1155Partial(tokenContracts[i]).safeTransferFrom(msg.sender, barn, tokenIds[i], counts[i], "");
            }
        }

        (bool sent, ) = payable(msg.sender).call{ value: totalPrice }("");
        require(sent, "Failed to send ether.");
    }

    receive () external payable { }

    function withdrawBalance() external onlyOwner {
        payable(msg.sender).transfer(address(this).balance);
    }
}