// SPDX-License-Identifier: MIT
pragma solidity =0.8.19;
pragma abicoder v2;

/**
 * @dev Context contract provides information about the current execution context.
 * Useful in cases where meta-transactions are used, as it lets you access msg.sender and msg.data.
 */
abstract contract ExecutionContext {
    function _currentSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

/**
 * @dev ERC20 Token Interface as per EIP-20.
 */
interface IERC20 {
    event Transfer(address indexed sender, address indexed recipient, uint256 amount);
    event Approval(address indexed owner, address indexed spender, uint256 value);

    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address to, uint256 value) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 value) external returns (bool);
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

/**
 * @dev ERC20 Metadata Interface extends the base ERC20 interface to include metadata functions.
 */
interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

/**
 * @dev Implementation of the ERC20 token with a basic minting mechanism.
 */
contract ERC20Token is ExecutionContext, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;
    string private _tokenName;
    string private _tokenSymbol;

    /**
     * @dev Sets the values for {name} and {symbol} during initialization.
     */
    constructor(string memory name_, string memory symbol_) {
        _tokenName = name_;
        _tokenSymbol = symbol_;
    }

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

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

    /**
     * @dev Returns the number of decimals used to display token amounts.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev Returns the total supply of tokens in existence.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev Returns the token balance of the specified account.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev Transfers tokens from the caller to the recipient.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address sender = _currentSender();
        _executeTransfer(sender, to, amount);
        return true;
    }

    /**
     * @dev Returns the current allowance for a spender.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev Approves a spender to transfer up to a specified amount from the caller’s account.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _currentSender();
        _setAllowance(owner, spender, amount);
        return true;
    }

    /**
     * @dev Transfers tokens on behalf of another account.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _currentSender();
        _updateAllowance(from, spender, amount);
        _executeTransfer(from, to, amount);
        return true;
    }

    /**
     * @dev Increases the allowance granted to a spender.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _currentSender();
        _setAllowance(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Decreases the allowance granted to a spender.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _currentSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _setAllowance(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }

    /**
     * @dev Moves tokens from one address to another.
     */
    function _executeTransfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);
    }

    /**
     * @dev Creates new tokens and assigns them to an account, increasing total supply.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply += amount;
        unchecked {
            _balances[account] += amount;
        }

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

    /**
     * @dev Burns tokens from an account, reducing total supply.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        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);
    }

    /**
     * @dev Sets the allowance for a spender.
     */
    function _setAllowance(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 Updates the allowance of a spender.
     */
    function _updateAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _setAllowance(owner, spender, currentAllowance - amount);
            }
        }
    }
}

/**
 * @dev SandBuck ERC20 token implementation.
 */
contract SandBuck is ERC20Token {
    string public constant contractVersion = "7";
    string public constant contractDeveloper = "SandBuck";
    string public constant contractEdition = "7mil";

    uint constant MAX_SUPPLY = 10_000_000 ether;

    constructor() ERC20Token("SandBuck", "SB") {
        _mint(msg.sender, MAX_SUPPLY);
    }
}

{
  "compilationTarget": {
    "SandBuck.sol": "SandBuck"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}