// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 */
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 ^0.8.9;

interface ILavaFiV2Common {
    error ZeroAddress();

    error InvalidEOA();

    error InvalidOperator();

    error NotLavaFiToken();

    error PresaleIsNotOver();

    error InvalidParams();

    // error InvalidDenominator();

    error InsufficientAllowance();

    error NotEnoughETHBalance();

    error NotEnoughTokenBalance();

    error NotEnoughUSDCBalance();

    error InvalidToken();

    error Unauthorized();

    error AlreadyAuthorized();

    event AddAuthorized(address indexed to);

    event RemoveAuthorized(address indexed to);
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface ILavaFiV2MainRouter {
    function setInviter(address inviter) external;

    function getInviter(address user) external view returns (address);

    function getInviteesCount(address inviter) external view returns (uint256);

    function getPresaledState(address token) external view returns (bool);

    function getTokenFeeReceiver() external view returns (address);

    function getFundFeeReceiver() external view returns (address);

    function getReward() external view returns (address);

    function getTokenFactory() external view returns (address);

    function getFundFactory() external view returns (address);

    function getFundRouter() external view returns (address);

    function getTeleRouter() external view returns (address);

    function getTokenSaltId() external view returns (uint256);

    function getTokenCreator(address token) external view returns (address);

    function getLatestTokenId() external view returns (uint256);

    function getTokenId(address token) external view returns (uint256);

    function getTokensCount(address user) external view returns (uint256);

    function getTokenByIndex(
        address user,
        uint256 index
    ) external view returns (address);

    function getFundSaltId() external view returns (uint256);

    function getFee() external view returns (uint256);

    function getBuyFee() external view returns (uint256);

    function getRedeemFee() external view returns (uint256);

    function getFund(address fundManger) external view returns (address);

    function getFundId(address fund) external view returns (uint256);

    function getFundManager(address fund) external view returns (address);

    function getLatestFundId() external view returns (uint256);

    function getHandleState(address handle) external view returns (bool);
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface ILavaFiV2Reward {
    function claim(
        uint256 mode,
        address to,
        address token,
        uint256 amount,
        bool isInvitation
    ) external;

    function buyToken(uint256 ethAmount,uint256 buyBackBurnRatio) external;

    function updateRankingOnIn(
        uint256 mode,
        address from,
        address token,
        uint256 amountIn
    ) external;

    function getRanking()
        external
        view
        returns (address, address, address, address, address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface ILavaFiV2StateBase {
    function setToken(address user, address token) external;

    function setPresaledState(address token) external;

    function setFund(address user, address pool) external;

    function getInviter(address user) external view returns (address);

    function getPresaledState(address token) external view returns (bool);

    function getReward() external view returns (address);

    function getTokenFeeReceiver() external view returns (address);

    function getFundFeeReceiver() external view returns (address);

    function getTokenSaltId() external view returns (uint256);

    function getTokenCreator(address token) external view returns (address);

    function getFundRouter() external view returns (address);

    function getFundSaltId() external view returns (uint256);

    function getFee() external view returns (uint256);

    function getBuyFee() external view returns (uint256);

    function getRedeemFee() external view returns (uint256);

    function getFund(address manager) external view returns (address);

    function getFundId(address pool) external view returns (uint256);

    function getFundManager(address fund) external view returns (address);

    function getLatestFundId() external view returns (uint256);

    function getGameUnitAmount(address token) external view returns (uint256);
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface ILavaFiV2TokenFactory {
    function createToken(string memory _symbol) external;

    // function setPresaledState(address token) external;
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IUniswapV2Pair {
    function getReserves()
        external
        view
        returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

    function approve(address spender, uint value) external returns (bool);

    function balanceOf(address owner) external view returns (uint);

    function totalSupply() external view returns (uint);
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IUniswapV2Router02 {
    function getAmountsOut(
        uint amountIn,
        address[] calldata path
    ) external view returns (uint[] memory amounts);

    function factory() external view 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 removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function swapExactTokensForETH(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

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

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

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import {IERC20Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol";

import "./interfaces/ILavaFiV2Reward.sol";
import "./interfaces/ILavaFiV2Common.sol";
import "./interfaces/ILavaFiV2TokenFactory.sol";
import "./interfaces/ILavaFiV2StateBase.sol";
import "./interfaces/routers/ILavaFiV2MainRouter.sol";

import "./interfaces/libraries/IUniswapV2Factory.sol";
import "./interfaces/libraries/IUniswapV2Router02.sol";
import "./interfaces/libraries/IUniswapV2Pair.sol";

abstract contract ERC20Custom is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => 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 returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual 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 returns (uint8) {
        return 18;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual 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 `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

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

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` 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 value
    ) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        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 `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 value
    ) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Destroys a `value` amount of tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 value) public virtual {
        _burn(_msgSender(), value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, deducting from
     * the caller's allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `value`.
     */
    function burnFrom(address account, uint256 value) public virtual {
        _spendAllowance(account, _msgSender(), value);
        _burn(account, value);
    }

    /**
     * @dev Moves a `value` 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.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(
        address from,
        address to,
        uint256 value
    ) internal virtual {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` 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.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     * ```
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(
        address owner,
        address spender,
        uint256 value,
        bool emitEvent
    ) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 value
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(
                    spender,
                    currentAllowance,
                    value
                );
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

/// @author Lava.Fi team
/// @title Lava.Fi.V2 Token Contract
/// @notice 2024.9
contract LavaFiV2Token is
    ERC20Custom,
    Ownable,
    ReentrancyGuard,
    ILavaFiV2Common
{
    address public immutable creator;
    address public immutable weth;
    address public immutable usdc;

    uint256 public immutable protocolFeeRatio;
    uint256 public immutable rewardFeeRatio;

    uint256 public immutable maxAmount;
    uint256 public immutable minAmount;
    uint256 public immutable ratioAmount;
    uint256 public immutable phraseAmount;

    uint256 public removedLiquidity;

    bool private _presaleIsOver = false;

    address[] public holders;
    mapping(address => uint256) public holderIndex;
    mapping(address => uint256) public holderLiquidities;

    mapping(uint256 => bool) public phraseIsBurned;

    IUniswapV2Router02 immutable uniswapV2Router;
    IUniswapV2Pair immutable uniswapV2Pair;
    ILavaFiV2StateBase private immutable LavaFiV2State;
    
    constructor(
        address _LavaFiV2State,
        string memory _symbol,
        address _creator,
        uint256 _maxAmount,
        uint256 _minAmount,
        uint256 _ratioAmount,
        uint256 _phraseAmount,
        uint256 _prototolFeeRatio,
        uint256 _rewardFeeRatio
    )
        ERC20Custom(string(abi.encodePacked("Lava-", _symbol)), _symbol)
        Ownable(_creator)
    {
        creator = _creator;
        _mint(address(this), 100_000_000_000 * 1 ether);
        weth = 0x4200000000000000000000000000000000000006;
        usdc = 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913;
        LavaFiV2State = ILavaFiV2StateBase(_LavaFiV2State);

        uniswapV2Router = IUniswapV2Router02(
            0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24
        );

        address _uniV2Pair = IUniswapV2Factory(uniswapV2Router.factory())
            .createPair(address(this), weth);

        uniswapV2Pair = IUniswapV2Pair(_uniV2Pair);
        maxAmount = _maxAmount;
        minAmount = _minAmount;
        ratioAmount = _ratioAmount;
        phraseAmount = _phraseAmount;

        protocolFeeRatio = _prototolFeeRatio;
        rewardFeeRatio = _rewardFeeRatio;
    }

    error NotEnoughBuyAmount();

    event Buy(address indexed from, uint256 amount);

    event AddLiquidity(
        address indexed from,
        uint256 indexed ethAmount,
        uint256 indexed tokenAmount,
        uint256 liquidity
    );

    event RemoveLiquidity(
        address indexed from,
        uint256 indexed ethAmount,
        uint256 indexed tokenAmount,
        uint256 liquidity
    );
    event BurnLiquidity(address indexed from, uint256 indexed liquidity);

    receive() external payable {
        uint256 size;
        address addr = msg.sender;
        assembly {
            size := extcodesize(addr)
        }
        if (size == 0 && !_presaleIsOver) {
            _buy();
            _updatePresale();
        }
    }

    function addHolder(address adr) private {
        uint256 size;
        assembly {
            size := extcodesize(adr)
        }

        if (size > 0) {
            return;
        }
        if (holderIndex[adr] == 0) {
            if (holders.length == 0 || holders[0] != adr) {
                holderIndex[adr] = holders.length;
                holders.push(adr);
            }
        }
    }

    function _buy() internal nonReentrant {
        if (msg.value < minAmount) revert NotEnoughBuyAmount();

        uint256 balance = balanceOf(address(this));
        uint256 oriEthAmount = msg.value > maxAmount ? maxAmount : msg.value;
        uint256 stdTokenAmount = (oriEthAmount * ratioAmount) / minAmount;
        uint256 liquidatedTokenAmount;
        uint256 liquidatedEthAmount;
        uint256 liquidity;

        uint256 toLiquidityTokenAmount;

        if (stdTokenAmount * 2 > balance) {
            toLiquidityTokenAmount = balance / 2;
        } else {
            toLiquidityTokenAmount = stdTokenAmount;
        }

        (liquidatedEthAmount, liquidatedTokenAmount, liquidity) = _addLiquidity(
            oriEthAmount,
            toLiquidityTokenAmount
        );

        _transfer(address(this), msg.sender, liquidatedTokenAmount);
        emit Buy(msg.sender, liquidatedTokenAmount);

        if (liquidatedEthAmount < msg.value)
            payable(msg.sender).transfer(msg.value - liquidatedEthAmount);

        uint256 newBalance = balanceOf(address(this));
        if (newBalance != 0 && newBalance < (ratioAmount * 2)) {
            _burn(address(this), newBalance);
        }
        addHolder(msg.sender);
        holderLiquidities[msg.sender] += liquidity;
    }

    function _updatePresale() internal nonReentrant {
        if (!_presaleIsOver && balanceOf(address(this)) == 0) {
            _presaleIsOver = true;
            _transferOwnership(address(0));

            if (!phraseIsBurned[0]) {
                (uint256 amountToken, uint256 amountETH) = _removeLiquidity(20);

                phraseIsBurned[0] = true;

                LavaFiV2State.setPresaledState(address(this));

                _transfer(
                    address(this),
                    LavaFiV2State.getReward(),
                    amountToken
                );
                payable(LavaFiV2State.getReward()).transfer(amountETH);

                ILavaFiV2Reward(LavaFiV2State.getReward()).updateRankingOnIn(
                    1,
                    address(this),
                    address(this),
                    amountToken
                );
            }
        }
    }

    function _addLiquidity(
        uint256 ethAmount,
        uint256 tokenAmount
    ) internal returns (uint256, uint256, uint256) {
        if (address(this).balance < ethAmount) revert NotEnoughETHBalance();
        if (balanceOf(address(this)) < tokenAmount)
            revert NotEnoughETHBalance();

        uint256 allowance = allowance(address(this), address(uniswapV2Router));
        if (allowance < tokenAmount) {
            _approve(
                address(this),
                address(uniswapV2Router),
                type(uint256).max
            );
        }
        (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        ) = uniswapV2Router.addLiquidityETH{value: ethAmount}(
                address(this),
                tokenAmount,
                0,
                0,
                address(this),
                block.timestamp
            );
        emit AddLiquidity(address(this), ethAmount, tokenAmount, liquidity);
        return (amountETH, amountToken, liquidity);
    }

    function _removeLiquidity(
        uint256 ratio
    ) internal returns (uint256, uint256) {
        uint256 liquidiy = uniswapV2Pair.balanceOf(address(this));

        uint256 toRemovedLiquidity = (liquidiy * ratio) / 100;

        uniswapV2Pair.approve(address(uniswapV2Router), toRemovedLiquidity);

        (uint256 tokenAmount, uint256 ethAmount) = uniswapV2Router
            .removeLiquidityETH(
                address(this),
                toRemovedLiquidity,
                0,
                0,
                address(this),
                block.timestamp
            );
        removedLiquidity += toRemovedLiquidity;
        emit RemoveLiquidity(
            address(this),
            ethAmount,
            tokenAmount,
            toRemovedLiquidity
        );
        return (tokenAmount, ethAmount);
    }

    function _updateLiquidity() internal nonReentrant {
        uint256 _balance = IERC20(weth).balanceOf(address(uniswapV2Pair));
        if (_balance < maxAmount) return;

        uint256 _ethCount = (_balance - maxAmount) / phraseAmount;
        uint256 phrase = _ethCount % 2 == 0 ? _ethCount : _ethCount - 1;
        if (phrase >= 2 && !phraseIsBurned[phrase]) {
            (uint256 amountToken, uint256 amountETH) = _removeLiquidity(2);

            _transfer(address(this), LavaFiV2State.getReward(), amountToken);

            payable(LavaFiV2State.getReward()).transfer(amountETH);

            ILavaFiV2Reward(LavaFiV2State.getReward()).updateRankingOnIn(
                1,
                address(this),
                address(this),
                amountToken
            );

            phraseIsBurned[phrase] = true;
        }
    }

    function _transfer(
        address from,
        address to,
        uint256 value
    ) internal override(ERC20Custom) {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }

        if (
            from == address(this) ||
            from == address(uniswapV2Router) ||
            from == LavaFiV2State.getReward() ||
            from == LavaFiV2State.getTokenFeeReceiver() ||
            to == address(this) ||
            to == address(uniswapV2Router) ||
            to == LavaFiV2State.getReward() ||
            to == LavaFiV2State.getTokenFeeReceiver()
        ) {
            //this contract or reward transfer in/out
            //any address to remove liquidity, token from lp to router, then from router to the address
            _update(from, to, value);
            return;
        }

        if (from != address(this) && to == address(uniswapV2Pair)) {
            //normal selling or adding liquidity to lp

            //check and update liquidity
            _updateLiquidity();

            if (!_presaleIsOver) {
                holderLiquidities[from] = 0;
                uint256 burnedValue = (value * 20) / 100;
                _update(from, address(0), burnedValue);
                _update(from, to, value - burnedValue);
                return;
            }

            (
                uint256 transferValue,
                uint256 rewardFee,
                uint256 fee
            ) = _calculateTradingFee(value);

            _update(from, address(this), fee);

            _swapEth(fee);

            _update(from, to, transferValue);

            _update(from, LavaFiV2State.getReward(), rewardFee);

            return;
        }

        //normal transfer
        _update(from, to, value);
    }

    function _calculateTradingFee(
        uint256 oriValue
    ) private view returns (uint256, uint256, uint256) {
        uint256 rewardFee = (oriValue * rewardFeeRatio) / 100;
        uint256 fee = (oriValue * protocolFeeRatio) / 100;
        return (oriValue - rewardFee - fee, rewardFee, fee);
    }

    function _swapEth(uint256 amount) internal {
        if (balanceOf(address(this)) < amount) revert NotEnoughTokenBalance();

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = weth;

        uint256[] memory amountOut = uniswapV2Router.getAmountsOut(
            amount,
            path
        );
        uint256 ethAmountOut = amountOut[amountOut.length - 1];

        uniswapV2Router.swapExactTokensForETH(
            amount,
            (ethAmountOut * 95) / 100,
            path,
            LavaFiV2State.getTokenFeeReceiver(),
            block.timestamp
        );
    }

    function presaleIsOver() external view returns (bool) {
        return _presaleIsOver;
    }

    function uniV2Pair() external view returns (address) {
        return address(uniswapV2Pair);
    }

    function getHoldersCount() external view returns (uint256) {
        return holders.length;
    }

    function getMarketCap(
        address owner
    ) external view returns (uint256[] memory) {
        uint256 balance = balanceOf(owner);
        uint256[] memory amounts;

        if (balance == 0) return amounts;

        address[] memory path = new address[](3);
        path[0] = address(this);
        path[1] = weth;
        path[2] = usdc;

        return uniswapV2Router.getAmountsOut(balance, path);
    }

    function getLiquidityPercentage() external view returns (uint256) {
        uint256 liquidity = uniswapV2Pair.balanceOf(address(this));
        return
            (holderLiquidities[msg.sender] * 10000) /
            (liquidity + removedLiquidity);
    }

    function getLiquidity() external view returns (uint256, uint256, uint256) {
        uint256 liquidity = uniswapV2Pair.balanceOf(address(this));
        if (liquidity == 0) return (0, 0, 0);
        (uint256 ethReserve, uint256 tokenReserve) = getReserves(
            weth,
            address(this)
        );
        return (liquidity, ethReserve, tokenReserve);
    }

    function getReserves(
        address tokenA,
        address tokenB
    ) internal view returns (uint reserveA, uint reserveB) {
        (address token0, ) = sortTokens(tokenA, tokenB);
        (uint reserve0, uint reserve1, ) = uniswapV2Pair.getReserves();
        (reserveA, reserveB) = tokenA == token0
            ? (reserve0, reserve1)
            : (reserve1, reserve0);
    }

    function sortTokens(
        address tokenA,
        address tokenB
    ) internal pure returns (address token0, address token1) {
        require(tokenA != tokenB, "UniswapV2Library: IDENTICAL_ADDRESSES");
        (token0, token1) = tokenA < tokenB
            ? (tokenA, tokenB)
            : (tokenB, tokenA);
        require(token0 != address(0), "UniswapV2Library: ZERO_ADDRESS");
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

{
  "compilationTarget": {
    "contracts/LavaFiV2Token.sol": "LavaFiV2Token"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}