// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./IERC20Metadata.sol";
import "./Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    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;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    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");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    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);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IUniswapV2Factory {

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IUniswapV2Router {
    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 addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);


    function getAmountsOut(uint256 amountIn, address[] memory path) external view returns (uint256[] memory amounts);
    function factory() external pure returns (address);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./IUniswapV2Router.sol";
import "./IUniswapV2Factory.sol";
import "./ERC20.sol";

contract MemeCoin is ERC20 {
    uint256 public constant TOTAL_SUPPLY = 1000000000 * 10**18; // Total supply tokens = 1bn
    uint256 public constant TOTAL_BUY_TOKENS = 800000000 * 10**18; // Total tokens to buy = 800mn
    uint256 public constant LIQUIDITY_TOKENS = 200000000 * 10**18; // Total tokens to for LP = 200mn
    uint256 public constant BUY_PRICE_DIFFERENCE_PERCENT = 1000; // Difference in buy price as percentage
    uint256 public constant FEE_PERCENTAGE = 2; // Fee percentage
    uint256 public constant TARGET_LIQUIDITY = 4 * 10**18; // Target liquidity in ETH, assuming 18 decimals
    address payable public constant REVENUE_ACCOUNT = payable(0xCDE357ABBdf15Da7CCE4B51CE70a1d0F08DfB782); // Fee collection address

    IUniswapV2Router public uniswapRouter;
    address public lpAddress;
    string public picture;
    address public admin;
    bool public listed;
    uint256 public totalETHBought; // Total ETH paid for tokens buying
    uint256 public totalTokensBought; // Total tokens bought
    uint256 private maxWalletAmount; // Total amount of tokens a wallet can hold
    uint256 public devTax;

    mapping(address => uint256) public contributions; // Track ETH contributions
    mapping(address => uint256) public tokens; // Track bought tokens

    constructor(
        address _router,
        address _admin,
        uint256 _maxWalletAmount,
        uint256 _devTax,
        string memory _name,
        string memory _ticker,
        string memory _picture
    ) ERC20(_name, _ticker) {
        uniswapRouter = IUniswapV2Router(_router);
        if (_maxWalletAmount == 0) {
            maxWalletAmount = type(uint256).max;//No Wallet limit
        } else if(_maxWalletAmount == 1){
            maxWalletAmount = (TOTAL_SUPPLY * 5) / 1000;//0.5% Wallet limit
        } else if(_maxWalletAmount == 2){
            maxWalletAmount = TOTAL_SUPPLY * 1 / 100; //1% Wallet limit
        }
        require(_maxWalletAmount == 0 || _maxWalletAmount == 1 || _maxWalletAmount == 2,'Invalid Max Wallet Amount');
        picture = _picture;
        admin = _admin;
        devTax = _devTax;
        listed = false;
        totalETHBought = 0;

        _mint(address(this), TOTAL_SUPPLY);
    }


    // Override the _transfer function to enforce max wallet amount per transfer
    function _transfer(address sender, address recipient, uint256 amount) internal override {
            uint256 tax;
            address _factory = uniswapRouter.factory();
            address _weth = uniswapRouter.WETH();
            address lpToken = IUniswapV2Factory(_factory).getPair(address(this), _weth);
        if(listed){
            updateMaxWalletAmount(lpToken,_weth);
            if (recipient != admin && recipient != address(lpToken) && recipient != address(0x000000000000000000000000000000000000dEaD)) {
                if (devTax > 0) {
                        tax = amount * devTax / 100;
                        amount = amount - tax;
                        super._transfer(sender, admin, tax);
                }
                require(balanceOf(address(recipient)) + amount <= maxWalletAmount, "Transfer amount exceeds the max wallet amount");
            }
    
            super._transfer(sender, recipient, amount);
        }else{
            
            
            if (recipient != admin && recipient != address(this) && recipient != lpToken) {
                if (devTax > 0) {
                        tax = amount * devTax / 100;
                        amount = amount - tax;
                        super._transfer(sender, admin, tax);
                }
                require(balanceOf(address(recipient)) + amount <= maxWalletAmount, "Transfer amount exceeds the max wallet amount");
            }
            super._transfer(sender, recipient, amount);
        }
    }

    function buyTokens(address buyer,uint256 slippageAmount) external payable {
        require(!listed, "Liquidity is already added to Uniswap");
        require(msg.value > 0, "Send ETH to buy tokens");

        uint256 fee = msg.value * FEE_PERCENTAGE / 100;
        uint256 ethAmount = msg.value - fee;

        uint256 tokenAmount = calculateTokenAmount(ethAmount);
        uint256 currentPrice = tokenAmount/ethAmount;

        uint256 finalprice;

        if (_getRemainingAmount() == msg.value) {

            finalprice = currentPrice;
    
            if(tokenAmount > (TOTAL_BUY_TOKENS - totalTokensBought)){
                tokenAmount = TOTAL_BUY_TOKENS - totalTokensBought;
            }
        }

        totalTokensBought += tokenAmount; 
        contributions[buyer] += ethAmount;

        if(finalprice == 0){
            require(tokenAmount >= slippageAmount, "Slippage Amount Restriction");
        }

        if(devTax > 0 && buyer != admin){
            uint256 tax = tokenAmount * devTax / 100;
            uint256 buyerTokens = tokenAmount - tax;
            tokens[buyer] += buyerTokens;
        }else{
            tokens[buyer] += tokenAmount;
        }

        totalETHBought += ethAmount;

        _transfer(address(this), buyer, tokenAmount);
        bool success;
        (success, ) = REVENUE_ACCOUNT.call{value: fee}("");
        require(success, "Transfer failed");

        if (address(this).balance >= TARGET_LIQUIDITY && !listed) {
            _addLiquidity();
            _burnRemainingTokens();
        }
    }

    function sellTokens(address seller,uint256 tokenAmount) external {
        require(!listed, "Liquidity is already added to Uniswap");
        require(tokenAmount > 0, "Amount must be greater than 0");

        uint256 ethAmount = calculateEthAmount(seller,tokenAmount);

        if (balanceOf(address(this)) == tokenAmount) {
            ethAmount = address(this).balance;
            contributions[seller] = 0;
            totalETHBought = 0;
        } else {
            contributions[seller] -= ethAmount;
            totalETHBought -= ethAmount;
        }

        uint256 fee = ethAmount * FEE_PERCENTAGE / 100;

        tokens[seller] -= tokenAmount;
        totalTokensBought -= tokenAmount; 
        
        _transfer(seller, address(this), tokenAmount);
        bool success;
        (success, ) = seller.call{value: ethAmount - fee}("");
        require(success, "Transfer failed");
        (success, ) = REVENUE_ACCOUNT.call{value: fee}("");
        require(success, "Transfer failed");

    }

    function getRemainingAmount() public view returns (uint256) {
        require(TARGET_LIQUIDITY > address(this).balance, "Liquidity target exceeded");

        return _getRemainingAmount();
    }


    function slippage(uint256 ethAmount,uint256 slippageAllowance) public view returns(uint256) {
        uint256 fee = ethAmount * FEE_PERCENTAGE / 100;
        ethAmount = ethAmount - fee;
         uint256 slippageAmount = calculateTokenAmount(ethAmount);
         if (devTax > 0) {
            uint256 tax = slippageAmount * devTax / 100;
            slippageAmount = slippageAmount - tax;
        }
        slippageAllowance = slippageAmount * slippageAllowance / 100;
        slippageAmount = slippageAmount - slippageAllowance;
        return slippageAmount;
    }

    function calculateTokenAmount(uint256 ethAmount) public view returns (uint256) {
        require(totalETHBought + ethAmount <= TARGET_LIQUIDITY, "Liquidity target exceeded");

        uint256 initialTokenPrice = _initialTokenPrice();
        uint256 tokenPrice = initialTokenPrice + ((initialTokenPrice * BUY_PRICE_DIFFERENCE_PERCENT / 100) * (totalETHBought + (ethAmount / 6)) / TARGET_LIQUIDITY);
        return ethAmount * 10**18 / tokenPrice;
    }

    function calculateEthAmount(address user,uint256 tokenAmount) public view returns (uint256) {
        uint256 userTokens = tokens[user];
        require(userTokens >= tokenAmount, "Insufficient user token balance");

        return contributions[user] * tokenAmount / userTokens;
    }

    
    function _addLiquidity() internal {

        listed = true;
        _approve(address(this), address(uniswapRouter), LIQUIDITY_TOKENS);
        uniswapRouter.addLiquidityETH{ value: address(this).balance }(
            address(this),
            LIQUIDITY_TOKENS,
            0,
            0,
            address(this),
            block.timestamp
        );

        address _factory = uniswapRouter.factory();

        address _weth = uniswapRouter.WETH();

        //Get LP token address and Burn LP
        address lpToken = IUniswapV2Factory(_factory).getPair(address(this),_weth);

        uint256 amount = IERC20(lpToken).balanceOf(address(this));

        //Burn LP
        IERC20(lpToken).transfer(address(0x000000000000000000000000000000000000dEaD),amount);
    }

    
    function _burnRemainingTokens() internal  {
        
        uint256 amount = IERC20(address(this)).balanceOf(address(this));

        //Burn Remaining Tokens
        IERC20(address(this)).transfer(address(0x000000000000000000000000000000000000dEaD),amount);
    }


    function updateMaxWalletAmount(address _lpToken,address _weth) internal {
        if(maxWalletAmount == type(uint256).max) return;

        uint256 amount = IERC20(_weth).balanceOf(address(_lpToken));

        if (amount >= 6 ether) {
            maxWalletAmount = type(uint256).max;
        }
    }
    

    function _getRemainingAmount() internal view returns (uint256) {
    
        return (TARGET_LIQUIDITY - totalETHBought) * 100 / (100 - FEE_PERCENTAGE);
    }


    // Get initial ETH normalized price per token
    function _initialTokenPrice() internal pure returns (uint256){
 
        return TARGET_LIQUIDITY * 10**18 / ((TOTAL_BUY_TOKENS * BUY_PRICE_DIFFERENCE_PERCENT) / 375);      
    }

}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./Memecoin.sol";

contract BullaFunDeployer {
    struct TokenInfo {
        address tokenAddress;
        address creator;
        string name;
        string ticker;
        string picture;
        uint256 tax;
        uint256 tokenId;
    }

    uint256 public constant FEE_PERCENTAGE = 2; // Fee percentage
    address internal uniswapRouter;
    uint64 public tokenCount;

    TokenInfo[] public tokens;

    event TokenCreated(
        address indexed tokenAddress,
        address indexed creator,
        string name,
        string ticker,
        string picture,
        uint256 tax,
        uint256 tokenId
    );

    event TokenBuy(
        address indexed buyerAddress,
        address indexed tokenAddress,
        uint256 indexed ethAmountAfterFee,
        uint256 tokenAmountReceived,
        bool listedStatus
    );

    event TokenSell(
        address indexed sellerAddress,
        address indexed tokenAddress,
        uint256 indexed ethAmountReceived,
        uint256 tokenAmountSent
    );

    constructor(address _router){
        uniswapRouter = _router;
    }

    function deployAndBuy(
        string memory _name,
        string memory _ticker,
        string memory _picture,
        uint256 _maxWalletAmount,
        uint256 _tax,
        uint256 _tokenId,
        bool _buy
        ) external payable {

        address tokenAddress = address(new MemeCoin(
            uniswapRouter,
            msg.sender,
            _maxWalletAmount,
            _tax,
            _name,
            _ticker,
            _picture
        ));

        TokenInfo memory newToken = TokenInfo({
            tokenAddress: tokenAddress,
            creator: msg.sender,
            name: _name,
            ticker: _ticker,
            picture: _picture,
            tax: _tax,
            tokenId: _tokenId
        });

        tokens.push(newToken);
        tokenCount = tokenCount + 1;

        emit TokenCreated(
            tokenAddress,
            msg.sender,
            _name,
            _ticker,
            _picture,
            _tax,
            _tokenId
        );

        if(_buy){

            MemeCoin memeCoin = MemeCoin(tokenAddress);
            uint256 fee = msg.value * FEE_PERCENTAGE / 100;
            uint256 ethAmount = msg.value - fee;
            uint256 tokenAmount = calculateTokenAmount(ethAmount,address(memeCoin));
            memeCoin.buyTokens{value: msg.value}(msg.sender,0);

            bool listed = memeCoin.listed();
            emit TokenBuy(msg.sender,tokenAddress,ethAmount,tokenAmount,listed);
        }
    }


    function buyTokens(address _memeCoinAddress,uint256 slippageAmount) external payable {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        uint256 fee = msg.value * FEE_PERCENTAGE / 100;
        uint256 ethAmount = msg.value - fee;
        uint256 tokenAmount = calculateTokenAmount(ethAmount,address(memeCoin));
        memeCoin.buyTokens{value: msg.value}(msg.sender,slippageAmount);

        bool listed = memeCoin.listed();

        emit TokenBuy(msg.sender,_memeCoinAddress,ethAmount,tokenAmount,listed);
    }

    function sellTokens(uint256 tokenAmount,address _memeCoinAddress) external {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        uint256 ethAmount = calculateEthAmount(msg.sender,tokenAmount,address(memeCoin));
        memeCoin.sellTokens(msg.sender,tokenAmount);

        emit TokenSell(msg.sender,_memeCoinAddress,ethAmount,tokenAmount);
    }


    function calculateSlippage(address _memeCoinAddress,uint256 ethAmount,uint256 slippageAllowance) external view returns (uint256) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.slippage(ethAmount,slippageAllowance);
    }

    function getListedStatus(address _memeCoinAddress) external view returns (bool) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.listed();
    }

    function getContributions(address _memeCoinAddress) external view returns (uint256) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.contributions(msg.sender);
    }

    function getTokens(address _memeCoinAddress) external view returns (uint256) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.tokens(msg.sender);
    }

    function getTotalEthBought(address _memeCoinAddress) external view returns (uint256) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.totalETHBought();
    }

    function getRemainingAmount(address _memeCoinAddress) external view returns (uint256) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.getRemainingAmount();
    }

    function calculateTokenAmount(uint256 ethAmount,address _memeCoinAddress) public view returns (uint256) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.calculateTokenAmount(ethAmount);
    }

    function calculateEthAmount(address user,uint256 tokenAmount,address _memeCoinAddress) public view returns (uint256) {
        MemeCoin memeCoin = MemeCoin(_memeCoinAddress);
        return memeCoin.calculateEthAmount(user,tokenAmount);
    }

    function getTokenAddress(uint256 index) public view returns (address) {
        require(index < tokens.length, "Invalid Token index");

        return tokens[index].tokenAddress;
    }
}

{
  "compilationTarget": {
    "NewBullaFunDeployer.sol": "BullaFunDeployer"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}