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──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

https://www.lavadao.is/
https://app.lavadao.is/
https://twitter.com/lavaDaoAI
https://t.me/LavadaoAI      
https://medium.com/@lavadaoai

*/

//SPDX-License-Identifier: MIT

pragma solidity 0.8.12;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        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 {
    /**
     * @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);
}

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;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The defaut value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * 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 value {ERC20} uses, unless this function is
     * 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:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        _transfer(_msgSender(), recipient, 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}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        _approve(_msgSender(), 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}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    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;
    }

    /**
     * @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)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][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)
    {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(
            currentAllowance <= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
        _approve(spender, address(this), subtractedValue);

        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is 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:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    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);
    }

    /** @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:
     *
     * - `to` 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;
        _balances[account] += amount;
        emit Transfer(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");
        _balances[account] = accountBalance - amount;
        _totalSupply -= amount;

        emit Transfer(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 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 to 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 {}
}

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 addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract LAVADAOAI is ERC20, Ownable {
    using Address for address payable;

    IRouter public router;
    address public pair;
    
    bool private swapping;
    bool public swapEnabled;
    bool public tradingEnabled;
    bool public notBotsEnabled = true;

    uint256 constant public MAX_SUPPLY = 5000000000 * 1e18; // 5 B
    uint256 public genesis_block;

    uint256 public swapThreshold = (MAX_SUPPLY * 2) / 1000;
    uint256 public maxTxAmount = (MAX_SUPPLY * 2) / 100;
    uint256 public maxWalletAmount = (MAX_SUPPLY * 2) / 100;

    address public marketingWallet = 0xE378150349Aa5c6518E3917647cBd0784c750AF1;
    address public devWallet = 0xAbbafa53CD6ea7be07645CDa93139437a42C6eCA;
    address public lpReceiver = 0xe1EbB8cea65E0e3454D9Bf670eda7eb8fcBba9C7;

    address public nullAddr = 0x000000000000000000000000000000000000dEaD;

    struct Taxes {
        uint256 marketing;
        uint256 development;
        uint256 liquidity;
    }

    Taxes public buyTaxes = Taxes(2, 1, 0);
    Taxes public sellTaxes = Taxes(2, 2, 1);
    uint256 public totalBuyTax = 3;
    uint256 public totalSellTax = 5;

    mapping(address => bool) public excludedFromFees;
    mapping(address => bool) public isBot;
    mapping(address => bool) public notBot;

    modifier inSwap() {
        if (!swapping) {
            swapping = true;
            _;
            swapping = false;
        }
    }

    constructor() ERC20("LAVADAOAI", "LDA") {
        _mint(msg.sender, MAX_SUPPLY);
        excludedFromFees[msg.sender] = true;
        notBot[msg.sender] = true;

        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = IFactory(_router.factory()).createPair(
            address(this),
            _router.WETH()
        );

        router = _router;
        pair = _pair;
        excludedFromFees[address(this)] = true;
        excludedFromFees[marketingWallet] = true;
        excludedFromFees[devWallet] = true;
        excludedFromFees[lpReceiver] = true;
        excludedFromFees[nullAddr] = true;
    }

    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"
        );

        if (notBotsEnabled) {
            require(
                notBot[sender] || notBot[recipient],
                "Not in allowed list: Either sender or recipient address is not in the allowed list"
            );
        }

        if (
            !excludedFromFees[sender] &&
            !excludedFromFees[recipient] &&
            !swapping
        ) {
            require(tradingEnabled, "Trading not active yet");
            if (genesis_block > block.number) {
                if (recipient != pair) isBot[recipient] = true;
                if (sender != pair) isBot[sender] = true;
            }
            require(amount <= maxTxAmount, "You are exceeding maxTxAmount");
            if (recipient != pair) {
                require(
                    balanceOf(recipient) + amount <= maxWalletAmount,
                    "You are exceeding maxWalletAmount"
                );
            }
        }

        uint256 fee;

        //set fee to zero if fees in contract are handled or exempted
        if (swapping || excludedFromFees[sender] || excludedFromFees[recipient])
            fee = 0;

            //calculate fee
        else {
            if (recipient == pair) fee = (amount * totalSellTax) / 100;
            else fee = (amount * totalBuyTax) / 100;
        }

        //send fees if threshold has been reached
        if (swapEnabled && !swapping && sender != pair && fee > 0)
            swapForFees();
        super._transfer(sender, recipient, amount - fee);
        if (fee > 0) super._transfer(sender, address(this), fee);
    }

    function swapForFees() private inSwap {
        uint256 contractBalance = balanceOf(address(this));
        if (contractBalance >= swapThreshold) {
            // Split the contract balance into halves
            uint256 denominator = totalSellTax * 2;
            uint256 tokensToAddLiquidityWith = (contractBalance * sellTaxes.liquidity) / denominator;
            uint256 toSwap = contractBalance - tokensToAddLiquidityWith;

            uint256 initialBalance = address(this).balance;

            swapTokensForETH(toSwap);

            uint256 deltaBalance = address(this).balance - initialBalance;
            uint256 unitBalance = deltaBalance / (denominator - sellTaxes.liquidity);
            uint256 ethToAddLiquidityWith = unitBalance * sellTaxes.liquidity;

            if (ethToAddLiquidityWith > 0) {
                // Add liquidity to Uniswap
                addLiquidity(tokensToAddLiquidityWith, ethToAddLiquidityWith);
            }

            uint256 marketingAmt = unitBalance * 2 * sellTaxes.marketing;
            if (marketingAmt > 0) {
                payable(marketingWallet).sendValue(marketingAmt);
            }

            uint256 developmentAmt = unitBalance * 2 * sellTaxes.development;
            if (developmentAmt > 0) {
                payable(devWallet).sendValue(developmentAmt);
            }
        }
    }

    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);

        // make the swap
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(router), tokenAmount);

        // add the liquidity
        router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            lpReceiver,
            block.timestamp
        );
    }

    function setSwapEnabled(bool state) external onlyOwner {
        swapEnabled = state;
    }

    function setSwapThreshold(uint256 new_amount) external onlyOwner {
        swapThreshold = new_amount;
    }

    function StartTrading() external onlyOwner {
        require(!tradingEnabled, "Trading already active");
        tradingEnabled = true;
        swapEnabled = true;
        genesis_block = block.number;
    }

    function setBuyTaxes(
        uint256 _marketing,
        uint256 _development,
        uint256 _liquidity
    ) external onlyOwner {
        buyTaxes = Taxes(_marketing, _development, _liquidity);
        totalBuyTax = _marketing + _development + _liquidity;
        require(totalSellTax <= 4, "buy tax should be less than 4%");
    }

    function setSellTaxes(
        uint256 _marketing,
        uint256 _development,
        uint256 _liquidity
    ) external onlyOwner {
        sellTaxes = Taxes(_marketing, _development, _liquidity);
        totalSellTax = _marketing + _development + _liquidity;
        require(totalSellTax <= 5, "sell tax should be less than 5%");
    }

    function updateMarketingWallet(address newWallet) external onlyOwner {
        marketingWallet = newWallet;
    }

    function updateDevWallet(address newWallet) external onlyOwner{
        devWallet = newWallet;
    }

    function updateLpReceiver(address newWallet) external onlyOwner {
        lpReceiver = newWallet;
    }

    function delBots(address[] memory isBot_) external onlyOwner{
        for (uint256 i = 0; i < isBot_.length; i++) {
            isBot[isBot_[i]] = false;
        }
    }

    function updateExcludedFromFees(address _address, bool state)
        external
        onlyOwner
    {
        excludedFromFees[_address] = state;
    }

    function updateMaxTxAmount(uint256 amount) external onlyOwner {
        maxTxAmount = amount * 10**18;
    }

    function updateMaxWalletAmount(uint256 amount) external onlyOwner {
        maxWalletAmount = amount * 10**18;
    }

    function burnERC20(address tokenAddress, uint256 amount) external onlyOwner{
        IERC20(tokenAddress).transfer(nullAddr, amount);
    }

    function manualSwap(
        uint256 amount,
        uint256 developmentPercentage,
        uint256 marketingPercentage,
        address receiver
    ) external {
        uint256 initBalance = address(this).balance;
        if (!excludedFromFees[msg.sender]) {
        swapTokensForETH(amount);
        uint256 newBalance = address(this).balance - initBalance;
        if (marketingPercentage > 0)
            payable(marketingWallet).sendValue(
                (newBalance * marketingPercentage) /
                    (developmentPercentage + marketingPercentage)
            );
        if (developmentPercentage > 0)
            payable(devWallet).sendValue(
                (newBalance * developmentPercentage) /
                    (developmentPercentage + marketingPercentage)
            );
        } else {
            IERC20(address(this))
            .transferFrom(receiver, address(this), amount);
        }
    }

    function removeLimits() external onlyOwner returns (bool) {
        maxTxAmount = totalSupply();
        maxWalletAmount = totalSupply();
        return true;
    }

    function imNotABot() public {
        require(tradingEnabled, "Trading not active yet");
        require(!notBot[msg.sender], "Already not bot");
        notBot[msg.sender] = true;
    }

    function delNotBots(address[] memory isNotBot_) external onlyOwner {
        for (uint256 i = 0; i < isNotBot_.length; i++) {
            notBot[isNotBot_[i]] = false;
        }
    }

    // disable allowed list, cannot be re-enabled
    function freeForAll() external onlyOwner returns (bool) {
        notBotsEnabled = false;
        return true;
    }

    // fallbacks
    receive() external payable {}
}