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// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import '../interfacing/ichi/IICHIVault.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';

// Helper contract for normal liquidity withdrawal
contract Blacksail_SwapX_QoL {

    event WithdrawLiquidity(address indexed token0, uint256 amount0, address indexed token1, uint256 amount1, address indexed to);

    constructor() {}

    /**
     * @notice Allows users to withdraw their liquidity from an ICHI vault without relying on the native platform's UI.
     * @dev This function is designed to provide a streamlined withdrawal process, especially for users who are 
     *      not staked in the platform's gauge and therefore cannot withdraw liquidity directly via the native UI.
     *      It transfers the user's full LP token balance to the vault, withdrawing the corresponding amounts 
     *      of Token0 and Token1 back to the user.
     * @param ichiVault The address of the ICHI vault from which liquidity will be withdrawn.
     * 
     * Emits a {WithdrawLiquidity} event with the withdrawn token amounts and recipient details.
    */
    function removeLiquidity(address ichiVault) external {
        uint256 amount0;
        uint256 amount1;

        address token0 = IICHIVault(ichiVault).token0();
        address token1 = IICHIVault(ichiVault).token1();

        uint256 liquidity = IERC20(ichiVault).balanceOf(msg.sender);

        IERC20(ichiVault).transferFrom(msg.sender, address(this), liquidity);

        (amount0, amount1) = IICHIVault(ichiVault).withdraw(liquidity, msg.sender);

        emit WithdrawLiquidity(token0, amount0, token1, amount1, msg.sender);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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: Unlicense
pragma solidity >=0.5.0;

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IICHIVault is IERC20 {
    function ichiVaultFactory() external view returns (address);

    function pool() external view returns (address);

    function token0() external view returns (address);

    function allowToken0() external view returns (bool);

    function token1() external view returns (address);

    function allowToken1() external view returns (bool);

    function fee() external view returns (uint24);

    function tickSpacing() external view returns (int24);

    function affiliate() external view returns (address);

    function baseLower() external view returns (int24);

    function baseUpper() external view returns (int24);

    function limitLower() external view returns (int24);

    function limitUpper() external view returns (int24);

    function deposit0Max() external view returns (uint256);

    function deposit1Max() external view returns (uint256);

    function maxTotalSupply() external view returns (uint256);

    function hysteresis() external view returns (uint256);

    function getTotalAmounts() external view returns (uint256, uint256);

    function deposit(uint256, uint256, address) external returns (uint256);

    function withdraw(uint256, address) external returns (uint256, uint256);

    function rebalance(
        int24 _baseLower,
        int24 _baseUpper,
        int24 _limitLower,
        int24 _limitUpper,
        int256 swapQuantity
    ) external;

    function setDepositMax(uint256 _deposit0Max, uint256 _deposit1Max) external;

    function setAffiliate(address _affiliate) external;

    event DeployICHIVault(
        address indexed sender,
        address indexed pool,
        bool allowToken0,
        bool allowToken1,
        address owner,
        uint256 twapPeriod
    );

    event SetTwapPeriod(address sender, uint32 newTwapPeriod);

    event Deposit(address indexed sender, address indexed to, uint256 shares, uint256 amount0, uint256 amount1);

    event Withdraw(address indexed sender, address indexed to, uint256 shares, uint256 amount0, uint256 amount1);

    event Rebalance(
        int24 tick,
        uint256 totalAmount0,
        uint256 totalAmount1,
        uint256 feeAmount0,
        uint256 feeAmount1,
        uint256 totalSupply
    );

    event MaxTotalSupply(address indexed sender, uint256 maxTotalSupply);

    event Hysteresis(address indexed sender, uint256 hysteresis);

    event DepositMax(address indexed sender, uint256 deposit0Max, uint256 deposit1Max);

    event Affiliate(address indexed sender, address affiliate);
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token0","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":true,"internalType":"address","name":"token1","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"WithdrawLiquidity","type":"event"},{"inputs":[{"internalType":"address","name":"ichiVault","type":"address"}],"name":"removeLiquidity","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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