LiquidityPenaltyHook

// SPDX-License-Identifier: MIT
// OpenZeppelin Uniswap Hooks — excerpt. Full file: source.url
function getHookPermissions() public pure virtual override returns (Hooks.Permissions memory permissions) {
    return Hooks.Permissions({
        beforeInitialize: false,
        afterInitialize: false,
        beforeAddLiquidity: false,
        afterAddLiquidity: true,
        beforeRemoveLiquidity: false,
        afterRemoveLiquidity: true,
        beforeSwap: false,
        afterSwap: false,
        beforeDonate: false,
        afterDonate: false,
        beforeSwapReturnDelta: false,
        afterSwapReturnDelta: false,
        afterAddLiquidityReturnDelta: true,
        afterRemoveLiquidityReturnDelta: true
    });
}

function _afterAddLiquidity(
    address sender,
    PoolKey calldata key,
    ModifyLiquidityParams calldata params,
    BalanceDelta, /* delta */
    BalanceDelta feeDelta,
    bytes calldata
) internal virtual override returns (bytes4, BalanceDelta) {
    PoolId poolId = key.toId();
    bytes32 positionKey = Position.calculatePositionKey(sender, params.tickLower, params.tickUpper, params.salt);
    if (_getBlockNumber() - getLastAddedLiquidityBlock(poolId, positionKey) < blockNumberOffset) {
        _updateLastAddedLiquidityBlock(poolId, positionKey);
        _takeFeesToHook(key, positionKey, feeDelta);
        return (this.afterAddLiquidity.selector, feeDelta);
    }
    _updateLastAddedLiquidityBlock(poolId, positionKey);
    return (this.afterAddLiquidity.selector, BalanceDeltaLibrary.ZERO_DELTA);
}