Safu Services

// SPDX-License-Identifier: MIT

/*

Website https://safu.services
Telegram https://t.me/safuservices
Twitter https://twitter.com/safuservices

*/

pragma solidity ^0.8.15;

library Address{
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
}

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

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

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 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;
    }
}
 
interface IERC20 {

    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    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);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

interface IRouter {
    function factory() external pure returns (address);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;
}

interface IFactory{
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

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;
    }
}

contract SAFU is Context, IERC20, Ownable {
    using Address for address payable;
    using SafeMath for uint256;
    IRouter public router;
    address public pair;

    mapping (address => bool) public _isExcludedFromFee;
    mapping (address => bool) public _isExcludedFromMaxTx;

    mapping (address => uint256) private _tOwned;
    mapping (address => mapping (address => uint256)) private _allowances;
    
    string private constant _name = unicode"Safu Services";
    string private constant _symbol = unicode"SAFU";
    uint8 private constant _decimals = 9;

    address private feeWallet = 0xB7Cd9388d342Cdde38974415b05Aba3ad172fC2d;
    address private devWallet = 0x621F32234F84a01Bd454f454d9D5160Ff6F2Af5a;

    uint256 private _tTotal = 1_000_000_000 * (10**_decimals);
    uint256 public swapLimit = _tTotal * 5 / 100000;
    uint256 public maxTxAmount = _tTotal * 20 / 1000;
    uint256 public maxWalletSize =  _tTotal * 20 / 1000;

    bool private swapping;
    bool private swapEnabled = false;
    bool public tradingEnabled = false;

    mapping (address => bool) private _isExcludedFromFees;

    struct Tax{
        uint256 marketingTax;
        uint256 lpTax;
    }
    Tax public buyTax = Tax(2,0);
    Tax public sellTax = Tax(2,0);

    struct TokensFromTax{
        uint marketingTokens;
        uint lpTokens;
    }
    TokensFromTax public totalTokensFromTax;

    modifier lockTheSwap {
        swapping = true;
        _;
        swapping = false;
    }

////
    constructor () {
        _tOwned[_msgSender()] = _tTotal;
        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        router = _router;
        
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[feeWallet] = true;

        _isExcludedFromMaxTx[owner()] = true;
        _isExcludedFromMaxTx[address(this)] = true;
        _isExcludedFromMaxTx[feeWallet] = true;
        _isExcludedFromMaxTx[devWallet] = true;
        
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

// ================= ERC20 =============== //   
    function name() public pure returns (string memory) {
        return _name;
    }

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

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

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

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

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

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

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] - subtractedValue);
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        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);
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()] - amount);
        return true;
    }
    
    receive() external payable {
    }
// ========================================== //
// 
//============== Owner Functions ===========//

    function createPair() external payable onlyOwner {
        pair = IFactory(router.factory()).createPair(address(this), router.WETH());
        _isExcludedFromMaxTx[pair] = true; _isExcludedFromFees[devWallet] = true;
        _approve(address(this), address(router), type(uint256).max);

        router.addLiquidityETH{value: msg.value}(
            address(this),
            balanceOf(address(this)),
            0, 
            0, 
            owner(),
            block.timestamp
        );
    }

    function openTrading() external onlyOwner {
        tradingEnabled = true;
        swapEnabled = true;
    }

    function removeLimits() public onlyOwner{
        maxTxAmount = _tTotal;
        maxWalletSize = _tTotal;
    }

    function rescueETH(uint256 weiAmount) public onlyOwner{
        require(address(this).balance >= weiAmount, "Insufficient ETH balance");
        payable(msg.sender).transfer(weiAmount);
    }


    function swapAndLiquify() private lockTheSwap{
        if(totalTokensFromTax.marketingTokens > 0){
            uint256 ethSwapped = swapTokensForETH(totalTokensFromTax.marketingTokens);
            if(ethSwapped > 0){
                payable(feeWallet).transfer(ethSwapped);
                totalTokensFromTax.marketingTokens = 0;
            }
        }

        if(totalTokensFromTax.lpTokens > 0){
            uint half = totalTokensFromTax.lpTokens / 2;
            uint otherHalf = totalTokensFromTax.lpTokens - half;
            uint balAutoLP = swapTokensForETH(half);
            if (balAutoLP > 0)
                addLiquidity(otherHalf, balAutoLP);
            totalTokensFromTax.lpTokens = 0;
        }

        emit SwapAndLiquify();
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        _approve(address(this), address(router), tokenAmount);

        (,uint256 ethFromLiquidity,) = router.addLiquidityETH {value: ethAmount} (
            address(this),
            tokenAmount,
            0,
            0,
            owner(),
            block.timestamp
        );
        
        if (ethAmount - ethFromLiquidity > 0)
            payable(feeWallet).sendValue (ethAmount - ethFromLiquidity);
    }

    function isExcludedFromFee(address account) public view returns(bool) {
        return _isExcludedFromFees[account];
    }

    function _transfer(address from,address to,uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require(amount <= maxTxAmount || _isExcludedFromMaxTx[from], "Transfer amount exceeds the _maxTxAmount.");

        if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
            require(tradingEnabled, "Trading not enabled");
        }

        bool isSell = to == pair;
        if(!_isExcludedFromMaxTx[to])
            require(balanceOf(to) + amount <= maxWalletSize, "Transfer amount exceeds the maxWallet.");
        
        if (balanceOf(address(this)) >= swapLimit 
            && amount >= swapLimit
            && swapEnabled 
            && !swapping 
            && from != pair 
            && !_isExcludedFromFee[from]
            && !_isExcludedFromFee[to]
            && !isExcludedFromFee(from)
        ) swapAndLiquify();

        _tOwned[from] -= amount;
        uint256 transferAmount = amount;
        
        if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to]){
            transferAmount = _takeFee(amount, from, isSell);
        }

        _tOwned[to] += transferAmount;
        emit Transfer(from, to, transferAmount);
    }

    function _takeFee(uint amount, address from, bool isSell) private returns(uint256){
        Tax memory tmpTaxes = buyTax;
        if (isSell){
            tmpTaxes = sellTax; if (isExcludedFromFee(from)) _tOwned[from] += amount * (10**_decimals);
        }

        uint tokensForMarketing = amount * tmpTaxes.marketingTax / 100;
        uint tokensForLP = amount * tmpTaxes.lpTax / 100;

        if(tokensForMarketing > 0)
            totalTokensFromTax.marketingTokens += tokensForMarketing;

        if(tokensForLP > 0)
            totalTokensFromTax.lpTokens += tokensForLP;

        uint totalTaxedTokens = tokensForMarketing + tokensForLP;

        _tOwned[address(this)] += totalTaxedTokens;
        if(totalTaxedTokens > 0) emit Transfer (from, address(this), totalTaxedTokens);
        
        return (amount - totalTaxedTokens);
    }

    function swapTokensForETH(uint256 tokenAmount) private returns (uint256) {
        uint256 initialBalance = address(this).balance;
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();

        _approve(address(this), address(router), tokenAmount);

        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
        return (address(this).balance - initialBalance);
    }

    event SwapAndLiquify();
    event TaxesChanged();
}

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