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//SPDX-License-Identifier: NONE
pragma solidity ^0.8.7;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";

//import "hardhat/console.sol";

//  ██████╗  ██████╗  ██████╗ ███████╗██████╗  █████╗ ██╗     ██╗          ██████╗  █████╗ ███╗   ██╗ ██████╗
// ██╔════╝ ██╔═══██╗██╔═══██╗██╔════╝██╔══██╗██╔══██╗██║     ██║         ██╔════╝ ██╔══██╗████╗  ██║██╔════╝
// ██║  ███╗██║   ██║██║   ██║█████╗  ██████╔╝███████║██║     ██║         ██║  ███╗███████║██╔██╗ ██║██║  ███╗
// ██║   ██║██║   ██║██║   ██║██╔══╝  ██╔══██╗██╔══██║██║     ██║         ██║   ██║██╔══██║██║╚██╗██║██║   ██║
// ╚██████╔╝╚██████╔╝╚██████╔╝██║     ██████╔╝██║  ██║███████╗███████╗    ╚██████╔╝██║  ██║██║ ╚████║╚██████╔╝
//  ╚═════╝  ╚═════╝  ╚═════╝ ╚═╝     ╚═════╝ ╚═╝  ╚═╝╚══════╝╚══════╝     ╚═════╝ ╚═╝  ╚═╝╚═╝  ╚═══╝ ╚═════╝
// $GOOF token contract
// Utility token for modifying goofball NFTs
//
// https://www.goofballgang.com

contract NFTContract {
    function ownerOf(uint256 tokenId) external view returns (address owner) {}

    function walletOfOwner(address _owner) public view returns (uint256[] memory) {}
}

contract GoofToken is Ownable, ERC20("Goofball Gang Token", "GOOF"), ERC20Burnable {
    uint256 public constant DAILY_RATE = 10 ether;

    uint256 public constant START_TIME = 1634250000; /* ~Oct 15th 2021 */
    uint256 public constant TIME_BLOCKSIZE = 10_000;

    uint256 public constant BONUS_TIME_LIMIT_1 = 1638316800; /* Dec 1st 2021 */
    uint256 public constant BONUS_TIME_LIMIT_2 = 1640995200; /* Jan 1st 2022 */

    uint256 public constant MIN_NAME_LENGTH = 2;
    uint256 public constant MAX_NAME_LENGTH = 30;

    event ChangeCommit(uint256 indexed tokenId, uint256 price, bytes changeData);
    event NameChange(uint256 indexed tokenId, bytes newName);

    NFTContract private delegate;
    uint256 public nameChangePrice = 1000 ether;
    uint256 public distributionEndTime = 1798761600; /* Jan 1st 2027 */
    uint256 public gweiPerGoof = 0;

    /** 
        We stash 16 last update timestamps in every 256 bit word by using only 16
        bits for the last update time.
        Every 16 bit value encodes 10,000 seconds (TIME_BLOCKSIZE) since START_TIME (Nov 1st 2021),
        so we can encode an interval of 20 years.
    */
    mapping(uint256 => uint256) public lastUpdateMap;

    mapping(uint256 => bytes) public goofNameMap;
    mapping(bytes => uint256) public nameOwnerMap;

    mapping(address => uint256) public permittedContracts;

    constructor(address nftContract, uint256 initialSupply) {
        delegate = NFTContract(nftContract);
        _mint(msg.sender, initialSupply);
    }

    function getUpdateTime(uint256 id) public view returns (uint256 updateTime) {
        uint256 value = lastUpdateMap[id >> 4];
        value = (value >> ((id & 0xF) << 4)) & 0xFFFF;
        return value * TIME_BLOCKSIZE + START_TIME;
    }
    function setUpdateTime(uint256 id, uint256 time) internal returns (uint256 roundedTime) {
        require(time > START_TIME, "invalid time");
        uint256 currentValue = lastUpdateMap[id >> 4];
        uint256 shift = ((id & 0xF) << 4);
        uint256 mask = ~(0xFFFF << shift);
        // Round up block time
        uint256 newEncodedValue = (time - START_TIME + TIME_BLOCKSIZE - 1) / TIME_BLOCKSIZE;
        lastUpdateMap[id >> 4] = ((currentValue & mask) | (newEncodedValue << shift));
        return newEncodedValue * TIME_BLOCKSIZE + START_TIME;
    }

    function setPermission(address addr, uint256 permitted) public onlyOwner {
        permittedContracts[addr] = permitted;
    }

    function setGweiPerGoof(uint256 value) public onlyOwner {
        gweiPerGoof = value;
    }

    function getName(uint256 id) public view returns (string memory) {
        return string(abi.encodePacked(goofNameMap[id]));
    }

    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    function setNameChangePrice(uint256 price) public onlyOwner {
        nameChangePrice = price;
    }

    function setDistributionEndTime(uint256 endTime) public onlyOwner {
        distributionEndTime = endTime;
    }

    function getInitialGrant(uint256 t) public pure returns (uint256) {
        if (t < BONUS_TIME_LIMIT_1) {
            return 1000 ether;
        }
        if (t < BONUS_TIME_LIMIT_2) {
            return 500 ether;
        } else {
            return 0;
        }
    }

    function getGrantBetween(uint256 beginTime, uint256 endTime) public pure returns (uint256) {
        if (beginTime > BONUS_TIME_LIMIT_2) {
            return ((endTime - beginTime) * DAILY_RATE) / 86400;
        }
        uint256 weightedTime = 0;
        if (beginTime < BONUS_TIME_LIMIT_1) {
            weightedTime += (min(endTime, BONUS_TIME_LIMIT_1) - beginTime) * 4;
        }
        if (beginTime < BONUS_TIME_LIMIT_2 && endTime > BONUS_TIME_LIMIT_1) {
            weightedTime += (min(endTime, BONUS_TIME_LIMIT_2) - max(beginTime, BONUS_TIME_LIMIT_1)) * 2;
        }
        if (endTime > BONUS_TIME_LIMIT_2) {
            weightedTime += endTime - max(beginTime, BONUS_TIME_LIMIT_2);
        }
        return (weightedTime * DAILY_RATE) / 86400;
    }

    function claim(uint256 tokenId) internal returns (uint256) {
        uint256 lastUpdate = getUpdateTime(tokenId);
        // Round up by block
        uint256 timeUpdate = min(block.timestamp, distributionEndTime);
        timeUpdate = setUpdateTime(tokenId, timeUpdate);
        if (lastUpdate == START_TIME) {
            return getInitialGrant(timeUpdate);
        } else {
            return getGrantBetween(lastUpdate, timeUpdate);
        }
    }

    function claimReward(uint256[] memory id) public {
        uint256 totalReward = 0;
        for (uint256 i = 0; i < id.length; i++) {
            require(delegate.ownerOf(id[i]) == msg.sender, "id not owned");
            totalReward += claim(id[i]);
        }
        if (totalReward > 0) {
            _mint(msg.sender, totalReward);
        }
    }

    function claimFull() public {
        claimFullFor(msg.sender);
    }

    function claimFullFor(address addr) public {
        uint256[] memory id = delegate.walletOfOwner(addr);
        uint256 totalReward = 0;
        for (uint256 i = 0; i < id.length; i++) {
            totalReward += claim(id[i]);
        }
        if (totalReward > 0) {
            _mint(addr, totalReward);
        }
    }

    function mint(uint256 amount) public onlyOwner {
        _mint(msg.sender, amount);
    }

    // burn tokens, allowing sent ETH to be converted according to gweiPerGoof
    function burnTokens(uint256 amount) private {
        if (msg.value > 0 && gweiPerGoof > 0) {
            uint256 converted = (msg.value * 1 gwei) / gweiPerGoof;
            if (converted >= amount) {
                amount = 0;
            } else {
                amount -= converted;
            }
        }
        if (amount > 0) {
            _burn(msg.sender, amount);
        }
    }

    // Buy items
    function commitChange(
        uint256 tokenId,
        uint256 pricePaid,
        bytes memory changeData
    ) public payable {
        require(delegate.ownerOf(tokenId) == msg.sender, "not owner");
        burnTokens(pricePaid);
        emit ChangeCommit(tokenId, pricePaid, changeData);
    }

    function isValidName(bytes memory nameBytes) public pure returns (bool) {
        if (nameBytes.length < MIN_NAME_LENGTH || nameBytes.length > MAX_NAME_LENGTH) {
            return false;
        }
        uint8 prevChar = 32;
        for (uint256 i = 0; i < nameBytes.length; i++) {
            uint8 ch = uint8(nameBytes[i]);
            if (ch == 32 && prevChar == 32) {
                return false; // no repeated spaces (and also checks first character)
            }
            // allow letter, numbers, punctuation, but no risk of HTML tags (<>) or
            // impersonating another goofball (# sign)
            if (!(ch >= 32 && ch <= 126) || ch == 60 || ch == 62 || ch == 35) {
                return false;
            }
            prevChar = ch;
        }
        if (prevChar == 32) {
            // No trailing space
            return false;
        }
        return true;
    }

    function toLower(bytes memory name) private pure returns (bytes memory) {
        bytes memory lowerCased = new bytes(name.length);
        for (uint256 i = 0; i < name.length; i++) {
            uint8 ch = uint8(name[i]);
            if (ch >= 65 && ch <= 90) {
                lowerCased[i] = bytes1(
                    ch +
                        97 - /* 'a' */
                        65 /* 'A' */
                );
            } else {
                lowerCased[i] = bytes1(ch);
            }
        }
        return lowerCased;
    }

    function changeName(uint256 tokenId, bytes memory newName) public payable {
        require(newName.length == 0 || isValidName(newName), "not valid name");
        require(delegate.ownerOf(tokenId) == msg.sender, "not owner");

        bytes memory lowerCased = toLower(newName);
        if (newName.length > 0) {
            uint256 nameOwner = nameOwnerMap[lowerCased];
            // 0 = nobody, other number is id + 1
            require(nameOwner == 0 || nameOwner == tokenId + 1, "name duplicate");
        }
        burnTokens(nameChangePrice);

        bytes memory currentName = goofNameMap[tokenId];
        if (currentName.length > 0) {
            delete nameOwnerMap[toLower(currentName)];
        }
        goofNameMap[tokenId] = newName;
        if (newName.length > 0) {
            nameOwnerMap[lowerCased] = tokenId + 1;
        }
        emit NameChange(tokenId, newName);
    }

    function permittedMint(address destination, uint256 amount) public {
        require(permittedContracts[msg.sender] == 1);
        _mint(destination, amount);
    }

    function permittedBurn(address src, uint256 amount) public {
        require(permittedContracts[msg.sender] == 1);
        _burn(src, amount);
    }

    function permittedTransfer(
        address src,
        address dest,
        uint256 amount
    ) public {
        require(permittedContracts[msg.sender] == 1);
        _transfer(src, dest, amount);
    }

    function withdrawBalance(address to, uint256 amount) external onlyOwner {
        if (amount == 0) {
            amount = address(this).balance;
        }
        // https://consensys.github.io/smart-contract-best-practices/recommendations/#dont-use-transfer-or-send
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, ) = payable(to).call{value: amount}("");
        require(success, "Transfer failed.");
    }
}

// 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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.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 Contracts guidelines: functions revert
 * instead 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, IERC20Metadata {
    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.
     */
    constructor(string memory name_, string memory symbol_) {
        _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 {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC20.sol";
import "../../../utils/Context.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        uint256 currentAllowance = allowance(account, _msgSender());
        require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
        unchecked {
            _approve(account, _msgSender(), currentAllowance - amount);
        }
        _burn(account, amount);
    }
}

// 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 meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

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 "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @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);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

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ernalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"beginTime","type":"uint256"},{"internalType":"uint256","name":"endTime","type":"uint256"}],"name":"getGrantBetween","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"t","type":"uint256"}],"name":"getInitialGrant","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"getName","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"getUpdateTime","outputs":[{"internalType":"uint256","name":"updateTime","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"goofNameMap","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"gweiPerGoof","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":"bytes","name":"nameBytes","type":"bytes"}],"name":"isValidName","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"lastUpdateMap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nameChangePrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"","type":"bytes"}],"name":"nameOwnerMap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"src","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"permittedBurn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"permittedContracts","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"destination","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"permittedMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"src","type":"address"},{"internalType":"address","name":"dest","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"permittedTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"endTime","type":"uint256"}],"name":"setDistributionEndTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"setGweiPerGoof","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"name":"setNameChangePrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint256","name":"permitted","type":"uint256"}],"name":"setPermission","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawBalance","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000f1987f66553460a4f0730ce17484f5a9a2e883a6000000000000000000000000000000000000000000000000000000000003d090

-----Decoded View---------------
Arg [0] : nftContract (address): 0xf1987F66553460a4F0730Ce17484F5a9A2E883a6
Arg [1] : initialSupply (uint256): 250000

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000f1987f66553460a4f0730ce17484f5a9a2e883a6
Arg [1] : 000000000000000000000000000000000000000000000000000000000003d090