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// SPDX-License-Identifier: None
// File: contracts/interfaces/IERC20.sol


// OpenZeppelin Contracts v4.3.2 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.9;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external returns (uint256 totalSupply);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external 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 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);

    /**
     * @dev Emitted when a transfer is made from a `owner` to the zero address
     * which will burn the tokens
     */
    event Burn(address indexed owner, uint256 value);


}
// File: contracts/interfaces/IERC20Metadata.sol


// OpenZeppelin Contracts v4.3.2 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.9;


/**
 * @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);
}
// File: contracts/ERC20.sol


// Modified version of OpenZeppelin Contracts v4.3.2 (token/ERC20/ERC20.sol)

pragma solidity ^0.8.9;



/**
 * @dev Implementation of the {IERC20} interface.
 *
 * 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.
 *
 */
contract ERC20 is IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name}, {symbol} and {decimals} and mints {supply} to {mintAddress}
     *
     * All of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(
        string memory name_, 
        string memory symbol_, 
        uint8 decimals_, 
        uint256 supply_, 
        address mintAddress_
        ) {
            _name = name_;
            _symbol = symbol_;
            _decimals = decimals_;
            _balances[mintAddress_] = supply_;
            _totalSupply = supply_;

            emit Transfer(address(0), mintAddress_, supply_);
    }

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

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256 balance_) {
        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 _success) {
        _transfer(msg.sender, _recipient, _amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256 allowance_) {
        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 result_) {
        _approve(msg.sender, 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` 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 result) {
        _transfer(sender, recipient, amount);

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

        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.
     *
     * If the token is sent to the zero address it is simply burned
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` 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: cannot transfer from the zero address");
        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20:_tranfser: amount exceeds balance");

        if (recipient == address(0)) {
            _balances[sender] = senderBalance - amount;
            _totalSupply = _totalSupply - amount;
            emit Burn(sender, amount);
            emit Transfer(sender, address(0), amount);

        } else if (recipient != address(0)) {

            _balances[sender] = senderBalance - amount;
            _balances[recipient] += amount;
            emit Transfer(sender, recipient, 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:
     *
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(spender != address(0), "ERC20:_approve: cannot approve to the zero address");

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

}
// File: contracts/HoffCoin.sol


pragma solidity ^0.8.9;

contract HoffCoinConfig is ERC20 {

    string internal constant TOKEN_SYMBOL = "HOFF";
    string internal constant TOKEN_NAME = "Hoff Coin";
    uint8 internal constant TOKEN_DECIMALS = 8;
    uint256 internal constant TOTAL_SUPPLY = 1000000000000000000;
    address internal constant INITIAL_MINT_ADDRESS = 0x8B1382A3BeC340cA91571293616f18c476949463;

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals,
        uint256 _totalSupply,
        address _mintAddress)
        ERC20(
            _name,
            _symbol,
            _decimals,
            _totalSupply,
            _mintAddress)
    {}
}


contract HoffCoin is HoffCoinConfig {

    constructor()
        HoffCoinConfig(
            TOKEN_NAME,
            TOKEN_SYMBOL,
            TOKEN_DECIMALS,
            TOTAL_SUPPLY,
            INITIAL_MINT_ADDRESS
        )
    {}
}

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

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