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BNBPartyLiquidityHelper.sol
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BNBPartyLiquidityHelper.sol
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./BNBPartyCreation.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
/// @title BNBPartyLiquidityHelper
/// @notice This abstract contract provides helper functions for managing liquidity within the BNB Party system
/// @dev Inherits from BNBPartyCreation and uses Uniswap's INonfungiblePositionManager for liquidity management
abstract contract BNBPartyLiquidityHelper is BNBPartyCreation {
/// @notice Decreases liquidity from a position and collects the resulting tokens
/// @param tokenId The ID of the liquidity position to decrease
/// @param liquidity The amount of liquidity to decrease
/// @return amount0 The amount of token0 collected
/// @return amount1 The amount of token1 collected
function _decreaseAndCollect(
uint256 tokenId,
uint128 liquidity
) internal returns (uint256 amount0, uint256 amount1) {
// Decrease liquidity from the position and receive the amount of token0 and token1
(amount0, amount1) = BNBPositionManager.decreaseLiquidity(
INonfungiblePositionManager.DecreaseLiquidityParams({
tokenId: tokenId,
liquidity: liquidity,
amount0Min: 0, // Minimum amount of token0 to collect, set to 0 for flexibility
amount1Min: 0, // Minimum amount of token1 to collect, set to 0 for flexibility
deadline: block.timestamp // Deadline for the transaction to be completed
})
);
// Collect the tokens from the position after liquidity decrease
BNBPositionManager.collect(
INonfungiblePositionManager.CollectParams({
tokenId: tokenId,
recipient: address(this), // Collect tokens to this contract address
amount0Max: uint128(amount0), // Maximum amount of token0 to collect
amount1Max: uint128(amount1) // Maximum amount of token1 to collect
})
);
}
/// @notice Burns all MEME tokens held by this contract
/// @param token The address of the MEME token to burn
function _burnMemeToken(address token) internal {
uint256 balance = IERC20(token).balanceOf(address(this));
ERC20Burnable(token).burn(balance);
}
}