Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

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

import "./Interfaces/IWETH.sol";
import "./OpenZeppelin/math/Math.sol";
import "./OpenZeppelin/token/ERC20/ERC20.sol";
import "./OpenZeppelin/token/ERC721/ERC721.sol";
import "./OpenZeppelin/token/ERC721/ERC721Holder.sol";

import "./Settings.sol";

import "./OpenZeppelin/upgradeable/token/ERC721/utils/ERC721HolderUpgradeable.sol";
import "./OpenZeppelin/upgradeable/token/ERC20/ERC20Upgradeable.sol";

contract TokenVault is ERC20Upgradeable, ERC721HolderUpgradeable {
    using Address for address;

    /// -----------------------------------
    /// -------- BASIC INFORMATION --------
    /// -----------------------------------

    /// @notice weth address
    address public constant weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    /// -----------------------------------
    /// -------- TOKEN INFORMATION --------
    /// -----------------------------------

    /// @notice the ERC721 token address of the vault's token
    address public token;

    /// @notice the ERC721 token ID of the vault's token
    uint256 public id;

    /// -------------------------------------
    /// -------- AUCTION INFORMATION --------
    /// -------------------------------------

    /// @notice the unix timestamp end time of the token auction
    uint256 public auctionEnd;

    /// @notice the length of auctions
    uint256 public auctionLength;

    /// @notice reservePrice * votingTokens
    uint256 public reserveTotal;

    /// @notice the current price of the token during an auction
    uint256 public livePrice;

    /// @notice the current user winning the token auction
    address payable public winning;

    enum State { inactive, live, ended, redeemed }

    State public auctionState;

    /// -----------------------------------
    /// -------- VAULT INFORMATION --------
    /// -----------------------------------

    string public constant version = "1.1";

    /// @notice the governance contract which gets paid in ETH
    address public immutable settings;

    /// @notice the address who initially deposited the NFT
    address public curator;

    /// @notice the AUM fee paid to the curator yearly. 3 decimals. ie. 100 = 10%
    uint256 public fee;

    /// @notice the last timestamp where fees were claimed
    uint256 public lastClaimed;

    /// @notice a boolean to indicate if the vault has closed
    bool public vaultClosed;

    /// @notice the number of ownership tokens voting on the reserve price at any given time
    uint256 public votingTokens;

    /// @notice a mapping of users to their desired token price
    mapping(address => uint256) public userPrices;

    /// ------------------------
    /// -------- EVENTS --------
    /// ------------------------

    /// @notice An event emitted when a user updates their price
    event PriceUpdate(address indexed user, uint price);

    /// @notice An event emitted when an auction starts
    event Start(address indexed buyer, uint price);

    /// @notice An event emitted when a bid is made
    event Bid(address indexed buyer, uint price);

    /// @notice An event emitted when an auction is won
    event Won(address indexed buyer, uint price);

    /// @notice An event emitted when someone redeems all tokens for the NFT
    event Redeem(address indexed redeemer);

    /// @notice An event emitted when someone cashes in ERC20 tokens for ETH from an ERC721 token sale
    event Cash(address indexed owner, uint256 shares);

    event UpdateAuctionLength(uint256 length);

    event UpdateCuratorFee(uint256 fee);

    event FeeClaimed(uint256 fee);

    constructor(address _settings) {
        settings = _settings;
    }

    function initialize(address _curator, address _token, uint256 _id, uint256 _supply, uint256 _listPrice, uint256 _fee, string memory _name, string memory _symbol) external initializer {
        // initialize inherited contracts
        __ERC20_init(_name, _symbol);
        __ERC721Holder_init();
        // set storage variables
        token = _token;
        id = _id;
        auctionLength = 3 days;
        curator = _curator;
        fee = _fee;
        lastClaimed = block.timestamp;
        auctionState = State.inactive;
        userPrices[_curator] = _listPrice;

        _mint(_curator, _supply);
    }

    /// --------------------------------
    /// -------- VIEW FUNCTIONS --------
    /// --------------------------------

    function reservePrice() public view returns(uint256) {
        return votingTokens == 0 ? 0 : reserveTotal / votingTokens;
    }

    /// -------------------------------
    /// -------- GOV FUNCTIONS --------
    /// -------------------------------

    /// @notice allow governance to boot a bad actor curator
    /// @param _curator the new curator
    function kickCurator(address _curator) external {
        require(msg.sender == Ownable(settings).owner(), "kick:not gov");

        curator = _curator;
    }

    /// @notice allow governance to remove bad reserve prices
    function removeReserve(address _user) external {
        require(msg.sender == Ownable(settings).owner(), "remove:not gov");
        require(auctionState == State.inactive, "update:auction live cannot update price");

        uint256 old = userPrices[_user];
        require(0 != old, "update:not an update");
        uint256 weight = balanceOf(_user);

        votingTokens -= weight;
        reserveTotal -= weight * old;
        
        userPrices[_user] = 0;

        emit PriceUpdate(_user, 0);
    }

    /// -----------------------------------
    /// -------- CURATOR FUNCTIONS --------
    /// -----------------------------------

    /// @notice allow curator to update the curator address
    /// @param _curator the new curator
    function updateCurator(address _curator) external {
        require(msg.sender == curator, "update:not curator");

        curator = _curator;
    }

    /// @notice allow curator to update the auction length
    /// @param _length the new base price
    function updateAuctionLength(uint256 _length) external {
        require(msg.sender == curator, "update:not curator");
        require(_length >= ISettings(settings).minAuctionLength() && _length <= ISettings(settings).maxAuctionLength(), "update:invalid auction length");

        auctionLength = _length;
        emit UpdateAuctionLength(_length);
    }

    /// @notice allow the curator to change their fee
    /// @param _fee the new fee
    function updateFee(uint256 _fee) external {
        require(msg.sender == curator, "update:not curator");
        require(_fee < fee, "update:can't raise");
        require(_fee <= ISettings(settings).maxCuratorFee(), "update:cannot increase fee this high");

        _claimFees();

        fee = _fee;
        emit UpdateCuratorFee(fee);
    }

    /// @notice external function to claim fees for the curator and governance
    function claimFees() external {
        _claimFees();
    }

    /// @dev interal fuction to calculate and mint fees
    function _claimFees() internal {
        require(auctionState != State.ended, "claim:cannot claim after auction ends");

        // get how much in fees the curator would make in a year
        uint256 currentAnnualFee = fee * totalSupply() / 1000; 
        // get how much that is per second;
        uint256 feePerSecond = currentAnnualFee / 31536000;
        // get how many seconds they are eligible to claim
        uint256 sinceLastClaim = block.timestamp - lastClaimed;
        // get the amount of tokens to mint
        uint256 curatorMint = sinceLastClaim * feePerSecond;

        // now lets do the same for governance
        address govAddress = ISettings(settings).feeReceiver();
        uint256 govFee = ISettings(settings).governanceFee();
        currentAnnualFee = govFee * totalSupply() / 1000; 
        feePerSecond = currentAnnualFee / 31536000;
        uint256 govMint = sinceLastClaim * feePerSecond;

        lastClaimed = block.timestamp;

        if (curator != address(0)) {
            _mint(curator, curatorMint);
            emit FeeClaimed(curatorMint);
        }
        if (govAddress != address(0)) {
            _mint(govAddress, govMint);
            emit FeeClaimed(govMint);
        }
    }

    /// --------------------------------
    /// -------- CORE FUNCTIONS --------
    /// --------------------------------

    /// @notice a function for an end user to update their desired sale price
    /// @param _new the desired price in ETH
    function updateUserPrice(uint256 _new) external {
        require(auctionState == State.inactive, "update:auction live cannot update price");
        uint256 old = userPrices[msg.sender];
        require(_new != old, "update:not an update");
        uint256 weight = balanceOf(msg.sender);

        if (votingTokens == 0) {
            votingTokens = weight;
            reserveTotal = weight * _new;
        }
        // they are the only one voting
        else if (weight == votingTokens && old != 0) {
            reserveTotal = weight * _new;
        }
        // previously they were not voting
        else if (old == 0) {
            uint256 averageReserve = reserveTotal / votingTokens;

            uint256 reservePriceMin = averageReserve * ISettings(settings).minReserveFactor() / 1000;
            require(_new >= reservePriceMin, "update:reserve price too low");
            uint256 reservePriceMax = averageReserve * ISettings(settings).maxReserveFactor() / 1000;
            require(_new <= reservePriceMax, "update:reserve price too high");

            votingTokens += weight;
            reserveTotal += weight * _new;
        } 
        // they no longer want to vote
        else if (_new == 0) {
            votingTokens -= weight;
            reserveTotal -= weight * old;
        } 
        // they are updating their vote
        else {
            uint256 averageReserve = (reserveTotal - (old * weight)) / (votingTokens - weight);

            uint256 reservePriceMin = averageReserve * ISettings(settings).minReserveFactor() / 1000;
            require(_new >= reservePriceMin, "update:reserve price too low");
            uint256 reservePriceMax = averageReserve * ISettings(settings).maxReserveFactor() / 1000;
            require(_new <= reservePriceMax, "update:reserve price too high");

            reserveTotal = reserveTotal + (weight * _new) - (weight * old);
        }

        userPrices[msg.sender] = _new;

        emit PriceUpdate(msg.sender, _new);
    }

    /// @notice an internal function used to update sender and receivers price on token transfer
    /// @param _from the ERC20 token sender
    /// @param _to the ERC20 token receiver
    /// @param _amount the ERC20 token amount
    function _beforeTokenTransfer(address _from, address _to, uint256 _amount) internal virtual override {
        if (auctionState == State.inactive) {
            uint256 fromPrice = userPrices[_from];
            uint256 toPrice = userPrices[_to];

            // only do something if users have different reserve price
            if (toPrice != fromPrice) {
                // new holder is not a voter
                if (toPrice == 0) {
                    // get the average reserve price ignoring the senders amount
                    votingTokens -= _amount;
                    reserveTotal -= _amount * fromPrice;
                }
                // old holder is not a voter
                else if (fromPrice == 0) {
                    votingTokens += _amount;
                    reserveTotal += _amount * toPrice;
                }
                // both holders are voters
                else {
                    reserveTotal = reserveTotal + (_amount * toPrice) - (_amount * fromPrice);
                }
            }
        }
    }

    /// @notice kick off an auction. Must send reservePrice in ETH
    function start() external payable {
        require(auctionState == State.inactive, "start:no auction starts");
        require(msg.value >= reservePrice(), "start:too low bid");
        require(votingTokens * 1000 >= ISettings(settings).minVotePercentage() * totalSupply(), "start:not enough voters");
        
        auctionEnd = block.timestamp + auctionLength;
        auctionState = State.live;

        livePrice = msg.value;
        winning = payable(msg.sender);

        emit Start(msg.sender, msg.value);
    }

    /// @notice an external function to bid on purchasing the vaults NFT. The msg.value is the bid amount
    function bid() external payable {
        require(auctionState == State.live, "bid:auction is not live");
        uint256 increase = ISettings(settings).minBidIncrease() + 1000;
        require(msg.value * 1000 >= livePrice * increase, "bid:too low bid");
        require(block.timestamp < auctionEnd, "bid:auction ended");

        // If bid is within 15 minutes of auction end, extend auction
        if (auctionEnd - block.timestamp <= 15 minutes) {
            auctionEnd += 15 minutes;
        }

        _sendETHOrWETH(winning, livePrice);

        livePrice = msg.value;
        winning = payable(msg.sender);

        emit Bid(msg.sender, msg.value);
    }

    /// @notice an external function to end an auction after the timer has run out
    function end() external {
        require(auctionState == State.live, "end:vault has already closed");
        require(block.timestamp >= auctionEnd, "end:auction live");

        _claimFees();

        // transfer erc721 to winner
        IERC721(token).transferFrom(address(this), winning, id);

        auctionState = State.ended;

        emit Won(winning, livePrice);
    }

    /// @notice an external function to burn all ERC20 tokens to receive the ERC721 token
    function redeem() external {
        require(auctionState == State.inactive, "redeem:no redeeming");
        _burn(msg.sender, totalSupply());
        
        // transfer erc721 to redeemer
        IERC721(token).transferFrom(address(this), msg.sender, id);
        
        auctionState = State.redeemed;

        emit Redeem(msg.sender);
    }

    /// @notice an external function to burn ERC20 tokens to receive ETH from ERC721 token purchase
    function cash() external {
        require(auctionState == State.ended, "cash:vault not closed yet");
        uint256 bal = balanceOf(msg.sender);
        require(bal > 0, "cash:no tokens to cash out");
        uint256 share = bal * address(this).balance / totalSupply();
        _burn(msg.sender, bal);

        _sendETHOrWETH(payable(msg.sender), share);

        emit Cash(msg.sender, share);
    }

    // Will attempt to transfer ETH, but will transfer WETH instead if it fails.
    function _sendETHOrWETH(address to, uint256 value) internal {
        // Try to transfer ETH to the given recipient.
        if (!_attemptETHTransfer(to, value)) {
            // If the transfer fails, wrap and send as WETH, so that
            // the auction is not impeded and the recipient still
            // can claim ETH via the WETH contract (similar to escrow).
            IWETH(weth).deposit{value: value}();
            IWETH(weth).transfer(to, value);
            // At this point, the recipient can unwrap WETH.
        }
    }

    // Sending ETH is not guaranteed complete, and the method used here will return false if
    // it fails. For example, a contract can block ETH transfer, or might use
    // an excessive amount of gas, thereby griefing a new bidder.
    // We should limit the gas used in transfers, and handle failure cases.
    function _attemptETHTransfer(address to, uint256 value)
        internal
        returns (bool)
    {
        // Here increase the gas limit a reasonable amount above the default, and try
        // to send ETH to the recipient.
        // NOTE: This might allow the recipient to attempt a limited reentrancy attack.
        (bool success, ) = to.call{value: value, gas: 30000}("");
        return success;
    }

}

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

interface IWETH {

    function deposit() external payable;

    function withdraw(uint) external;

    function approve(address, uint) external returns(bool);

    function transfer(address, uint) external returns(bool);

    function transferFrom(address, address, uint) external returns(bool);

    function balanceOf(address) external view returns(uint);

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

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

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The defaut value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overloaded;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        _approve(sender, _msgSender(), currentAllowance - amount);

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);

        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        _balances[sender] = senderBalance - amount;
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        _balances[account] = accountBalance - amount;
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/Context.sol";
import "./IERC721.sol";
import "./IERC721Metadata.sol";
import "./IERC721Enumerable.sol";
import "./IERC721Receiver.sol";
import "../../introspection/ERC165.sol";
import "../../utils/Address.sol";
import "../../utils/EnumerableSet.sol";
import "../../utils/EnumerableMap.sol";
import "../../utils/Strings.sol";

/**
 * @title ERC721 Non-Fungible Token Standard basic implementation
 * @dev see https://eips.ethereum.org/EIPS/eip-721
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
    using Address for address;
    using EnumerableSet for EnumerableSet.UintSet;
    using EnumerableMap for EnumerableMap.UintToAddressMap;
    using Strings for uint256;

    // Mapping from holder address to their (enumerable) set of owned tokens
    mapping (address => EnumerableSet.UintSet) private _holderTokens;

    // Enumerable mapping from token ids to their owners
    EnumerableMap.UintToAddressMap private _tokenOwners;

    // Mapping from token ID to approved address
    mapping (uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping (address => mapping (address => bool)) private _operatorApprovals;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Optional mapping for token URIs
    mapping (uint256 => string) private _tokenURIs;

    // Base URI
    string private _baseURI;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;

        // register the supported interfaces to conform to ERC721 via ERC165
        _registerInterface(type(IERC721).interfaceId);
        _registerInterface(type(IERC721Metadata).interfaceId);
        _registerInterface(type(IERC721Enumerable).interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _holderTokens[owner].length();
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(base, _tokenURI));
        }
        // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
        return string(abi.encodePacked(base, tokenId.toString()));
    }

    /**
    * @dev Returns the base URI set via {_setBaseURI}. This will be
    * automatically added as a prefix in {tokenURI} to each token's URI, or
    * to the token ID if no specific URI is set for that token ID.
    */
    function baseURI() public view virtual returns (string memory) {
        return _baseURI;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        return _holderTokens[owner].at(index);
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        // _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
        return _tokenOwners.length();
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        (uint256 tokenId, ) = _tokenOwners.at(index);
        return tokenId;
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(_msgSender() == owner || ERC721.isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(address from, address to, uint256 tokenId) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @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.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _tokenOwners.contains(tokenId);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     d*
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
        _mint(to, tokenId);
        require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId); // internal owner

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        // Clear metadata (if any)
        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }

        _holderTokens[owner].remove(tokenId);

        _tokenOwners.remove(tokenId);

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(address from, address to, uint256 tokenId) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _holderTokens[from].remove(tokenId);
        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

    /**
     * @dev Internal function to set the base URI for all token IDs. It is
     * automatically added as a prefix to the value returned in {tokenURI},
     * or to the token ID if {tokenURI} is empty.
     */
    function _setBaseURI(string memory baseURI_) internal virtual {
        _baseURI = baseURI_;
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
        private returns (bool)
    {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver(to).onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    // solhint-disable-next-line no-inline-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    function _approve(address to, uint256 tokenId) private {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721Receiver.sol";

  /**
   * @dev Implementation of the {IERC721Receiver} interface.
   *
   * Accepts all token transfers. 
   * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
   */
contract ERC721Holder is IERC721Receiver {

    /**
     * @dev See {IERC721Receiver-onERC721Received}.
     *
     * Always returns `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) {
        return this.onERC721Received.selector;
    }
}

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

import "./OpenZeppelin/access/Ownable.sol";
import "./Interfaces/ISettings.sol";

contract Settings is Ownable, ISettings {

    /// @notice the maximum auction length
    uint256 public override maxAuctionLength;

    /// @notice the longest an auction can ever be
    uint256 public constant maxMaxAuctionLength = 8 weeks;

    /// @notice the minimum auction length
    uint256 public override minAuctionLength;

    /// @notice the shortest an auction can ever be
    uint256 public constant minMinAuctionLength = 0;

    /// @notice governance fee max
    uint256 public override governanceFee;

    /// @notice 10% fee is max
    uint256 public constant maxGovFee = 100;

    /// @notice max curator fee
    uint256 public override maxCuratorFee;

    /// @notice the % bid increase required for a new bid
    uint256 public override minBidIncrease;

    /// @notice 10% bid increase is max 
    uint256 public constant maxMinBidIncrease = 100;

    /// @notice 1% bid increase is min
    uint256 public constant minMinBidIncrease = 10;

    /// @notice the % of tokens required to be voting for an auction to start
    uint256 public override minVotePercentage;

    /// @notice the max % increase over the initial 
    uint256 public override maxReserveFactor;

    /// @notice the max % decrease from the initial
    uint256 public override minReserveFactor;

    /// @notice the address who receives auction fees
    address payable public override feeReceiver;

    event UpdateMaxAuctionLength(uint256 _old, uint256 _new);

    event UpdateMinAuctionLength(uint256 _old, uint256 _new);

    event UpdateGovernanceFee(uint256 _old, uint256 _new);

    event UpdateCuratorFee(uint256 _old, uint256 _new);

    event UpdateMinBidIncrease(uint256 _old, uint256 _new);

    event UpdateMinVotePercentage(uint256 _old, uint256 _new);

    event UpdateMaxReserveFactor(uint256 _old, uint256 _new);

    event UpdateMinReserveFactor(uint256 _old, uint256 _new);

    event UpdateFeeReceiver(address _old, address _new);

    constructor() {
        maxAuctionLength = 2 weeks;
        minAuctionLength = 1;
        feeReceiver = payable(msg.sender);
        minReserveFactor = 500;  // 50%
        maxReserveFactor = 2000; // 200%
        minBidIncrease = 50;     // 5%
        maxCuratorFee = 100;
        minVotePercentage = 500; // 50%
    }

    function setMaxAuctionLength(uint256 _length) external onlyOwner {
        require(_length <= maxMaxAuctionLength, "max auction length too high");
        require(_length > minAuctionLength, "max auction length too low");

        emit UpdateMaxAuctionLength(maxAuctionLength, _length);

        maxAuctionLength = _length;
    }

    function setMinAuctionLength(uint256 _length) external onlyOwner {
        require(_length >= minMinAuctionLength, "min auction length too low");
        require(_length < maxAuctionLength, "min auction length too high");

        emit UpdateMinAuctionLength(minAuctionLength, _length);

        minAuctionLength = _length;
    }

    function setGovernanceFee(uint256 _fee) external onlyOwner {
        require(_fee <= maxGovFee, "fee too high");

        emit UpdateGovernanceFee(governanceFee, _fee);

        governanceFee = _fee;
    }

    function setMaxCuratorFee(uint256 _fee) external onlyOwner {
        emit UpdateCuratorFee(governanceFee, _fee);

        maxCuratorFee = _fee;
    }

    function setMinBidIncrease(uint256 _min) external onlyOwner {
        require(_min <= maxMinBidIncrease, "min bid increase too high");
        require(_min >= minMinBidIncrease, "min bid increase too low");

        emit UpdateMinBidIncrease(minBidIncrease, _min);

        minBidIncrease = _min;
    }

    function setMinVotePercentage(uint256 _min) external onlyOwner {
        // 1000 is 100%
        require(_min <= 1000, "min vote percentage too high");

        emit UpdateMinVotePercentage(minVotePercentage, _min);

        minVotePercentage = _min;
    }

    function setMaxReserveFactor(uint256 _factor) external onlyOwner {
        require(_factor > minReserveFactor, "max reserve factor too low");

        emit UpdateMaxReserveFactor(maxReserveFactor, _factor);

        maxReserveFactor = _factor;
    }

    function setMinReserveFactor(uint256 _factor) external onlyOwner {
        require(_factor < maxReserveFactor, "min reserve factor too high");

        emit UpdateMinReserveFactor(minReserveFactor, _factor);

        minReserveFactor = _factor;
    }

    function setFeeReceiver(address payable _receiver) external onlyOwner {
        require(_receiver != address(0), "fees cannot go to 0 address");

        emit UpdateFeeReceiver(feeReceiver, _receiver);

        feeReceiver = _receiver;
    }

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721ReceiverUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC721Receiver} interface.
 *
 * Accepts all token transfers.
 * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
 */
contract ERC721HolderUpgradeable is Initializable, IERC721ReceiverUpgradeable {
    function __ERC721Holder_init() internal initializer {
        __ERC721Holder_init_unchained();
    }

    function __ERC721Holder_init_unchained() internal initializer {
    }
    /**
     * @dev See {IERC721Receiver-onERC721Received}.
     *
     * Always returns `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address,
        address,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC721Received.selector;
    }
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20Upgradeable.sol";
import "./extensions/IERC20MetadataUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal initializer {
        __Context_init_unchained();
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal initializer {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
    uint256[45] private __gap;
}

// SPDX-License-Identifier: MIT

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 GSN 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) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

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

pragma solidity ^0.8.0;

import "../../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

pragma solidity ^0.8.0;

import "./IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {

    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {

    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;

    constructor () {
        // Derived contracts need only register support for their own interfaces,
        // we register support for ERC165 itself here
        _registerInterface(type(IERC165).interfaceId);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     *
     * Time complexity O(1), guaranteed to always use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return _supportedInterfaces[interfaceId];
    }

    /**
     * @dev Registers the contract as an implementer of the interface defined by
     * `interfaceId`. Support of the actual ERC165 interface is automatic and
     * registering its interface id is not required.
     *
     * See {IERC165-supportsInterface}.
     *
     * Requirements:
     *
     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
     */
    function _registerInterface(bytes4 interfaceId) internal virtual {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        _supportedInterfaces[interfaceId] = true;
    }
}

// SPDX-License-Identifier: MIT

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;
        // solhint-disable-next-line no-inline-assembly
        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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for managing an enumerable variant of Solidity's
 * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
 * type.
 *
 * Maps have the following properties:
 *
 * - Entries are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Entries are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableMap for EnumerableMap.UintToAddressMap;
 *
 *     // Declare a set state variable
 *     EnumerableMap.UintToAddressMap private myMap;
 * }
 * ```
 *
 * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
 * supported.
 */
library EnumerableMap {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Map type with
    // bytes32 keys and values.
    // The Map implementation uses private functions, and user-facing
    // implementations (such as Uint256ToAddressMap) are just wrappers around
    // the underlying Map.
    // This means that we can only create new EnumerableMaps for types that fit
    // in bytes32.

    struct MapEntry {
        bytes32 _key;
        bytes32 _value;
    }

    struct Map {
        // Storage of map keys and values
        MapEntry[] _entries;

        // Position of the entry defined by a key in the `entries` array, plus 1
        // because index 0 means a key is not in the map.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
        // We read and store the key's index to prevent multiple reads from the same storage slot
        uint256 keyIndex = map._indexes[key];

        if (keyIndex == 0) { // Equivalent to !contains(map, key)
            map._entries.push(MapEntry({ _key: key, _value: value }));
            // The entry is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            map._indexes[key] = map._entries.length;
            return true;
        } else {
            map._entries[keyIndex - 1]._value = value;
            return false;
        }
    }

    /**
     * @dev Removes a key-value pair from a map. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function _remove(Map storage map, bytes32 key) private returns (bool) {
        // We read and store the key's index to prevent multiple reads from the same storage slot
        uint256 keyIndex = map._indexes[key];

        if (keyIndex != 0) { // Equivalent to contains(map, key)
            // To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
            // in the array, and then remove the last entry (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = keyIndex - 1;
            uint256 lastIndex = map._entries.length - 1;

            // When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            MapEntry storage lastEntry = map._entries[lastIndex];

            // Move the last entry to the index where the entry to delete is
            map._entries[toDeleteIndex] = lastEntry;
            // Update the index for the moved entry
            map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved entry was stored
            map._entries.pop();

            // Delete the index for the deleted slot
            delete map._indexes[key];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function _contains(Map storage map, bytes32 key) private view returns (bool) {
        return map._indexes[key] != 0;
    }

    /**
     * @dev Returns the number of key-value pairs in the map. O(1).
     */
    function _length(Map storage map) private view returns (uint256) {
        return map._entries.length;
    }

   /**
    * @dev Returns the key-value pair stored at position `index` in the map. O(1).
    *
    * Note that there are no guarantees on the ordering of entries inside the
    * array, and it may change when more entries are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
        require(map._entries.length > index, "EnumerableMap: index out of bounds");

        MapEntry storage entry = map._entries[index];
        return (entry._key, entry._value);
    }

    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     */
    function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
        uint256 keyIndex = map._indexes[key];
        if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
        return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function _get(Map storage map, bytes32 key) private view returns (bytes32) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    /**
     * @dev Same as {_get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {_tryGet}.
     */
    function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    // UintToAddressMap

    struct UintToAddressMap {
        Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
        return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
        return _remove(map._inner, bytes32(key));
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
        return _contains(map._inner, bytes32(key));
    }

    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(UintToAddressMap storage map) internal view returns (uint256) {
        return _length(map._inner);
    }

   /**
    * @dev Returns the element stored at position `index` in the set. O(1).
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
        (bytes32 key, bytes32 value) = _at(map._inner, index);
        return (uint256(key), address(uint160(uint256(value))));
    }

    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     *
     * _Available since v3.4._
     */
    function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
        (bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
        return (success, address(uint160(uint256(value))));
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key)))));
    }

    /**
     * @dev Same as {get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryGet}.
     */
    function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant alphabet = "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] = alphabet[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

}

// SPDX-License-Identifier: MIT

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

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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

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

interface ISettings {

    function maxAuctionLength() external returns(uint256);

    function minAuctionLength() external returns(uint256);

    function maxCuratorFee() external returns(uint256);

    function governanceFee() external returns(uint256);

    function minBidIncrease() external returns(uint256);

    function minVotePercentage() external returns(uint256);

    function maxReserveFactor() external returns(uint256);

    function minReserveFactor() external returns(uint256);

    function feeReceiver() external returns(address payable);

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721ReceiverUpgradeable {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @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

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20MetadataUpgradeable is IERC20Upgradeable {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/*
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal initializer {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
    uint256[50] private __gap;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_settings","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"Bid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"shares","type":"uint256"}],"name":"Cash","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"FeeClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"PriceUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"redeemer","type":"address"}],"name":"Redeem","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"Start","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"length","type":"uint256"}],"name":"UpdateAuctionLength","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"UpdateCuratorFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"Won","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"auctionEnd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"auctionLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"auctionState","outputs":[{"internalType":"enum TokenVault.State","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bid","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"cash","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimFees","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"curator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"end","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"fee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"id","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_curator","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_id","type":"uint256"},{"internalType":"uint256","name":"_supply","type":"uint256"},{"internalType":"uint256","name":"_listPrice","type":"uint256"},{"internalType":"uint256","name":"_fee","type":"uint256"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_curator","type":"address"}],"name":"kickCurator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lastClaimed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"livePrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"redeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"removeReserve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"reservePrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"reserveTotal","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"settings","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"start","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_length","type":"uint256"}],"name":"updateAuctionLength","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_curator","type":"address"}],"name":"updateCurator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_fee","type":"uint256"}],"name":"updateFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_new","type":"uint256"}],"name":"updateUserPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userPrices","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vaultClosed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"votingTokens","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"winning","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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

000000000000000000000000e0fc79183a22106229b84ecdd55ca017a07eddca

-----Decoded View---------------
Arg [0] : _settings (address): 0xE0FC79183a22106229B84ECDd55cA017A07eddCa

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000e0fc79183a22106229b84ecdd55ca017a07eddca