// File: contracts/Context.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

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;
    }
}
// File: contracts/DecentralWingsToken.sol



/*

TWITTER https://twitter.com/DecentralWing
WEBSITE https://www.decentralwings.com
TELEGRAM: https://t.me/decentralwings

Experience a fresh perspective on a beloved classic,
immersing yourself in captivating gameplay, crypto rewards,
and unique NFT assets. Embark on an exciting journey with us,
embracing the thrill of earning incentives in the Decentral Wings universe!

*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

import "./IERC20.sol";
import "./SafeMath.sol";
import "./Context.sol";
import "./Ownable.sol";
import "./IUniswapV2Factory.sol";
import "./IUniswapV2Router02.sol";

interface IUniswapV2Pair {
    function sync() external;
}

contract WingsToken is Context, IERC20, Ownable {
    using SafeMath for uint256;
    IUniswapV2Router02 public router;

    address public pair;

    mapping(address => uint256) private balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _isExcludedFromFee;

    string private constant _name = "Decentral Wings";
    string private constant _symbol = "WINGS";
    uint8 private constant _decimals = 18;

    uint256 private _maxSupply = 1_000_000 * 10 ** _decimals;

    uint256 public _maxWalletAmount = 30_000 * 10 ** _decimals;
    uint256 public _maxTransactionAmount = 30_000 * 10 ** _decimals;
    uint256 public _sThreshold = 30_000 * 10 ** _decimals;
    uint256 public _doForceSwap;

    address public lWalletAddress;
    address public mWalletAddress;
    bool public _isTradingEnabled = false;

    struct buyFeeStruct {
        uint256 liqPercentage;
        uint256 markPercentage;
    }

    struct sellFeeStruct {
        uint256 liqPercentage;
        uint256 markPercentage;
    }

    buyFeeStruct public buyFeeCfg;
    sellFeeStruct public sellFeeCfg;

    uint256 private percLiquidityFee;
    uint256 private percMarketingFee;

    bool private _isInSwapMode;

    event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity);

    constructor (address markAddress, address liqAddress) {
        mWalletAddress = markAddress;
        lWalletAddress = liqAddress;

        balances[_msgSender()] = _maxSupply;

        buyFeeCfg.liqPercentage = 1;
        buyFeeCfg.markPercentage = 1;

        sellFeeCfg.liqPercentage = 1;
        sellFeeCfg.markPercentage = 1;

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _uniPair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());

        router = _uniswapV2Router;
        pair = _uniPair;

        _isExcludedFromFee[msg.sender] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[address(0x00)] = true;
        _isExcludedFromFee[address(0xdead)] = true;


        emit Transfer(address(0), _msgSender(), _maxSupply);
    }

    function enableTrading() external onlyOwner {
        _isTradingEnabled = true;
    }

    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 _maxSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return balances[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 transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()] - 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 excludeFromFees(address account, bool excluded) public onlyOwner {
        _isExcludedFromFee[address(account)] = excluded;
    }

    receive() external payable {}

    function rmFeesFromBuy(uint256 amount, address from) private returns (uint256) {
        uint256 liquidityFeeToken = amount * buyFeeCfg.liqPercentage / 100;
        uint256 marketingFeeTokens = amount * buyFeeCfg.markPercentage / 100;

        balances[address(this)] += liquidityFeeToken + marketingFeeTokens;
        emit Transfer(from, address(this), marketingFeeTokens + liquidityFeeToken);
        return (amount - liquidityFeeToken - marketingFeeTokens);
    }

    function rmFeesFromSell(uint256 amount, address from) private returns (uint256) {
        uint256 liquidityFeeToken = amount * sellFeeCfg.liqPercentage / 100;
        uint256 marketingFeeTokens = amount * sellFeeCfg.markPercentage / 100;

        balances[address(this)] += liquidityFeeToken + marketingFeeTokens;
        emit Transfer(from, address(this), marketingFeeTokens + liquidityFeeToken);
        return (amount - liquidityFeeToken - marketingFeeTokens);
    }

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

    function setFee(uint256 _buyMarketingFee, uint256 _buyLiquidityFee, uint256 _sellMarketingFee, uint256 _sellLiquidityFee) public onlyOwner {
        require(_buyMarketingFee + _buyLiquidityFee < 500 || _sellLiquidityFee + _sellMarketingFee < 500, "Can't change fee higher than 24%");

        buyFeeCfg.liqPercentage = _buyLiquidityFee;
        buyFeeCfg.markPercentage = _buyMarketingFee;

        sellFeeCfg.liqPercentage = _sellLiquidityFee;
        sellFeeCfg.markPercentage = _sellMarketingFee;
    }

    function setTransactionMaxAmt(uint256 _maxTx, uint256 _maxWallet) public onlyOwner {
        require(_maxTx + _maxWallet > _maxSupply / 1000, "Should be bigger than 0,1%");
        _maxTransactionAmount = _maxTx;
        _maxWalletAmount = _maxWallet;
    }

    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 _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");

        balances[from] -= amount;
        uint256 transferAmount = amount;

        bool takeFee;

        if (!_isTradingEnabled) {
            require(_isExcludedFromFee[from] || _isExcludedFromFee[to], "Trading is not active.");
        }
        if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
            takeFee = true;
        }

        if (takeFee) {
            if (to != pair) {
                require(amount <= _maxTransactionAmount, "Transfer Amount exceeds the maxTxnsAmount");
                require(balanceOf(to) + amount <= _maxWalletAmount, "Transfer amount exceeds the maxWalletAmount.");
                transferAmount = rmFeesFromBuy(amount, to);
            }

            if (from != pair) {
                require(amount <= _maxTransactionAmount, "Transfer Amount exceeds the maxTxnsAmount");
                transferAmount = rmFeesFromSell(amount, from);
                _doForceSwap += 1;

                if (balanceOf(address(this)) >= _sThreshold && !_isInSwapMode) {
                    _isInSwapMode = true;
                    swapAndAddLiquidity(_sThreshold);
                    _isInSwapMode = false;
                    _doForceSwap = 0;
                }

                if (_doForceSwap > 5 && !_isInSwapMode) {
                    _isInSwapMode = true;
                    swapAndAddLiquidity(balanceOf(address(this)));
                    _isInSwapMode = false;
                    _doForceSwap = 0;
                }
            }

            if (to != pair && from != pair) {
                require(amount <= _maxTransactionAmount, "Transfer Amount exceeds the maxTxnsAmount");
                require(balanceOf(to) + amount <= _maxWalletAmount, "Transfer amount exceeds the maxWalletAmount.");
            }
        }

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

    function swapAndAddLiquidity(uint256 amount) private {
        uint256 contractBalance = amount;
        uint256 liquidityTokens = contractBalance * (buyFeeCfg.liqPercentage + sellFeeCfg.liqPercentage) / (buyFeeCfg.markPercentage + buyFeeCfg.liqPercentage + sellFeeCfg.markPercentage + sellFeeCfg.liqPercentage);
        uint256 marketingTokens = contractBalance * (buyFeeCfg.markPercentage + sellFeeCfg.markPercentage) / (buyFeeCfg.markPercentage + buyFeeCfg.liqPercentage + sellFeeCfg.markPercentage + sellFeeCfg.liqPercentage);
        uint256 totalTokensToSwap = liquidityTokens + marketingTokens;

        uint256 tokensForLiquidity = liquidityTokens.div(2);
        uint256 amountToSwapForETH = contractBalance.sub(tokensForLiquidity);
        uint256 initialETHBalance = address(this).balance;
        swapTokensForEth(amountToSwapForETH);
        uint256 ethBalance = address(this).balance.sub(initialETHBalance);

        uint256 ethForLiquidity = ethBalance.mul(liquidityTokens).div(totalTokensToSwap);
        addLiquidity(tokensForLiquidity, ethForLiquidity);
        payable(mWalletAddress).transfer(address(this).balance);
    }

    function swapTokensForEth(uint256 tokenAmount) private {
        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
        );
    }

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

        router.addLiquidityETH{value: ethAmount} (
            address(this),
            tokenAmount,
            0,
            0,
            lWalletAddress,
            block.timestamp
        );
    }
}
// File: contracts/IERC20.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

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);
}

// File: contracts/IUniswapV2Factory.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);
}
// File: contracts/IUniswapV2Router02.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

interface IUniswapV2Router02 {
    function factory() external pure returns (address);
    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(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    )
        external payable;

    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
}
// File: contracts/Ownable.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

import "./Context.sol";

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
// File: contracts/SafeMath.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

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;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        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;
    }
}