// SPDX-License-Identifier: MIT

/*

Disclaimer!
You are only allowed to sell 33% of your initial bag from your recent buy every 2 hour.

Telegram: https://t.me/UniqueInuERC
Website: https://uniqueinu.net/
Staking: https://stake.uniqueinu.net/

**/

pragma solidity ^0.8.19;

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);
}

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;
    }
}

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);

    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;
    }
}

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

}

contract UNIQUE is Context, IERC20, Ownable {
    using SafeMath for uint256;
    IUniswapV2Router02 public uniswapV2Router;

    address public uniswapV2Pair;
    
    mapping (address => uint256) private balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    mapping (address => uint256) public lastSell;
    mapping (address => uint256) public lastBuyAmount;

    string private constant _name = "Unique Inu";
    string private constant _symbol = "UNIQUE";
    uint8 private constant _decimals = 9;
    uint256 private _tTotal =  1000000000000  * 10**_decimals;

    uint256 public _maxWalletAmount = 20000000000 * 10**_decimals;
    uint256 public swapTokenAtAmount = 3000000000 * 10**_decimals;

    address public marketingWallet;

    bool public limitsIsActive = true;

    struct BuyFees{
        uint256 marketing;
    }

    struct SellFees{
        uint256 marketing;
    }

    struct UserInfo{
        uint256 lastSell;
    }
    BuyFees public buyFee;
    SellFees public sellFee;

    bool private swapping;

    constructor (address marketingAddress) {
        marketingWallet = marketingAddress;
        balances[address(msg.sender)] = _tTotal;

        buyFee.marketing = 20;
        sellFee.marketing = 50;

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());

        uniswapV2Router = _uniswapV2Router;
        uniswapV2Pair = _uniswapV2Pair;
        
        _isExcludedFromFee[msg.sender] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[address(0x00)] = true;
        _isExcludedFromFee[address(0xdead)] = true;

        
        emit Transfer(address(0), address(msg.sender), _tTotal);
    }

    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 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 manualSwap(uint256 amount) public onlyOwner {
        swapTokensForEth(amount);
    }

    function removeLimits() public onlyOwner {
        limitsIsActive = false;
    }

    function changeFee(uint256 buyMarketingFee, uint256 sellMarketingFee) public onlyOwner {
        buyFee.marketing = buyMarketingFee;
        sellFee.marketing = sellMarketingFee;
    }

    function changeSwapAtAmount(uint256 swapAtAmount) public onlyOwner {
        swapTokenAtAmount = swapAtAmount * 10**_decimals;
    }

    function takeBuyFees(uint256 amount, address from) private returns (uint256) {
        uint256 marketingFeeTokens = amount * buyFee.marketing / 100;

        balances[address(this)] += marketingFeeTokens;
        emit Transfer (from, address(this), marketingFeeTokens);
        return (amount -marketingFeeTokens);
    }

    function takeSellFees(uint256 amount, address from) private returns (uint256) {
        uint256 marketingFeeTokens = amount * buyFee.marketing / 100;

        balances[address(this)] += marketingFeeTokens;
        emit Transfer (from, address(this), marketingFeeTokens);
        return (amount -marketingFeeTokens);
    }

    function isExcludedFromFee(address account) public view returns(bool) {
        return _isExcludedFromFee[account];
    }

    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(!_isExcludedFromFee[from] && !_isExcludedFromFee[to]){
            takeFee = true;
        }

        if(takeFee){
            if(to != uniswapV2Pair && from == uniswapV2Pair){
                if(limitsIsActive) {
                    require(balanceOf(to) + amount <= _maxWalletAmount, "Transfer amount exceeds the maxWalletAmount.");
                }
                transferAmount = takeBuyFees(amount, to);
                lastBuyAmount[to] = balanceOf(to) + transferAmount;
            }

            if(from != uniswapV2Pair && to == uniswapV2Pair){
                require(amount <= lastBuyAmount[from] / 3, "Can't sell more than 1/3 of bag");
                require(block.timestamp > lastSell[from], "You have to wait another 2 hours to sell more token");
                lastSell[from] = block.timestamp + 2 hours;
                transferAmount = takeSellFees(amount, from);

                if (balanceOf(address(this)) >= swapTokenAtAmount && !swapping) {
                    swapping = true;
                    if(transferAmount >= swapTokenAtAmount) {
                        swapTokensForEth(swapTokenAtAmount);
                    } else {
                        swapTokensForEth(transferAmount);
                    }
                    swapping = false;
              }
            }

            if(to != uniswapV2Pair && from != uniswapV2Pair){
                require(block.timestamp > lastSell[from], "You have to wait another 2 hours to transfer more token");
                lastSell[from] = block.timestamp + 2 hours;
                if(limitsIsActive) {
                    require(balanceOf(to) + amount <= _maxWalletAmount, "Transfer amount exceeds the maxWalletAmount.");
                }
            }
        }
        
        balances[to] += transferAmount;
        emit Transfer(from, to, transferAmount);
    }

    function swapTokensForEth(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();

        _approve(address(this), address(uniswapV2Router), tokenAmount);

        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(marketingWallet),
            block.timestamp
        );
    }
}