// SPDX-License-Identifier: UNLICENSED

// Website: https://www.thetrustco.in/

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) {
        this;
        return msg.data;
    }
}

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 IERC20Metadata is IERC20 {
    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);
}

contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) internal _balances;

    mapping(address => mapping(address => uint256)) internal _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        _approve(sender, _msgSender(), currentAllowance - 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) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);

        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        _balances[sender] = senderBalance - amount;
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        _balances[account] = accountBalance - amount;
        _totalSupply -= amount;

        emit Transfer(account, address(0), 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);
    }

    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

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 Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        _setOwner(_msgSender());
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

interface IFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IRouter {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external;
}

contract TimeBomb is ERC20, Ownable {
    using Address for address payable;

    IRouter public router;
    address public pair;

    bool private swapping;
    bool public swapEnabled;
    bool public tradingEnabled;

    uint256 public swapThreshold;

    address public marketingWallet = 0x84874cD121274690D972137e65C8AcA0937d0Af6;
    address public devWallet = 0x25Eff24DF1D8C0F6f891AADcF4cdEc03529818D5;
    address public wtrustTokenAddress = 0x14D8D5055353589024e9fC55d0B06d77f3EbD709;

    uint256 public startBlockNumber;
    uint256 public blockThreshold = 600;

    uint256 public totSellTax = 99;

    mapping(address => bool) public excludedFromFees;
    mapping(address => bool) private isBot;

    modifier inSwap() {
        if (!swapping) {
            swapping = true;
            _;
            swapping = false;
        }
    }

    constructor() ERC20("Time Bomb", "TB") {
        _mint(msg.sender, 13e9 * 10 ** decimals());
        excludedFromFees[msg.sender] = true;

        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = IFactory(_router.factory()).createPair(address(this), wtrustTokenAddress);

        router = _router;
        pair = _pair;
        excludedFromFees[address(this)] = true;
        excludedFromFees[marketingWallet] = true;
        excludedFromFees[devWallet] = true;

        startBlockNumber = block.number;
    }

    function blockDecrementor() public {
        uint256 _sellTax = totSellTax;

        uint256 blocksMined = block.number - startBlockNumber;

        uint256 decrementNumberForSellTax = blocksMined / blockThreshold;

        if (decrementNumberForSellTax > 0 && decrementNumberForSellTax < 99) {
            if (decrementNumberForSellTax < _sellTax) {
                _sellTax = _sellTax - decrementNumberForSellTax;
                _sellTax -= decrementNumberForSellTax;
                totSellTax = _sellTax;
            } else {
                startBlockNumber = block.number;
                totSellTax = 99;
            }
        } else {
            startBlockNumber = block.number;
            totSellTax = 99;
        }
    }

    function _transfer(address sender, address recipient, uint256 amount) internal override {
        require(amount > 0, "Transfer amount must be greater than zero");
        require(!isBot[sender] && !isBot[recipient], "You can't transfer tokens");

        blockDecrementor();

        if (!excludedFromFees[sender] && !excludedFromFees[recipient]) {
            require(tradingEnabled, "Trading not active yet");
        }

        uint256 fee;

        if (swapping || excludedFromFees[sender] || excludedFromFees[recipient]) fee = 0;
        else {
            if (recipient == pair) fee = (amount * totSellTax) / 100;
        }

        if (swapEnabled && !swapping && fee > 0) {
            super._transfer(sender, address(this), fee);
            swapTbForWTrust(fee);
        }

        super._transfer(sender, recipient, amount - fee);
    }

    function swapTbForWTrust(uint256 tokenAmount) private inSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = wtrustTokenAddress;

        _approve(address(this), address(router), tokenAmount);

        // make the swap
        router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount, 0, path, marketingWallet, block.timestamp);
    }

    function setSwapEnabled(bool state) external onlyOwner {
        swapEnabled = state;
    }

    function setBlockThreshold(uint256 new_amount) external onlyOwner {
        blockThreshold = new_amount;
    }

    function enableTrading() external onlyOwner {
        require(!tradingEnabled, "Trading already active");
        tradingEnabled = true;
        swapEnabled = true;
    }

    function _setSellTaxes(uint256 _newValue) internal {
        totSellTax = _newValue;
    }

    function updateMarketingWallet(address newWallet) external onlyOwner {
        marketingWallet = newWallet;
    }

     function updatePairOfWTRUST(address newWallet) external onlyOwner {
        wtrustTokenAddress = newWallet;
        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = IFactory(_router.factory()).createPair(address(this), wtrustTokenAddress);

        router = _router;
        pair = _pair;
    }

    function updateSaleTax(uint256 _amount) external onlyOwner {
        _setSellTaxes(_amount);
    }

    function updatePeppaWallet(address newWallet) external onlyOwner {
        devWallet = newWallet;
    }

    function updateRouterAndPair(IRouter _router, address _pair) external onlyOwner {
        router = _router;
        pair = _pair;
    }

    function addBots(address[] memory isBot_) public onlyOwner {
        for (uint i = 0; i < isBot_.length; i++) {
            isBot[isBot_[i]] = true;
        }
    }

    function updateExcludedFromFees(address _address, bool state) external onlyOwner {
        excludedFromFees[_address] = state;
    }

    function rescueERC20(address tokenAddress, uint256 amount) external onlyOwner {
        IERC20(tokenAddress).transfer(owner(), amount);
    }

    function rescueETH(uint256 weiAmount) external onlyOwner {
        payable(owner()).sendValue(weiAmount);
    }

    function manualSwap(uint256 amount) external onlyOwner {
        swapTbForWTrust(amount);
    }

    // fallbacks
    receive() external payable {}
}