// This file is part of Modular Account.

//

// Copyright 2024 Alchemy Insights, Inc.

//

// SPDX-License-Identifier: GPL-3.0-or-later

//

// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General

// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your

// option) any later version.

//

// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the

// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for

// more details.

//

// You should have received a copy of the GNU General Public License along with this program. If not, see

// <https://www.gnu.org/licenses/>.

pragma solidity ^0.8.28;

import {IExecutionHookModule} from "@erc6900/reference-implementation/interfaces/IExecutionHookModule.sol";

import {IExecutionModule} from "@erc6900/reference-implementation/interfaces/IExecutionModule.sol";

import {IModule} from "@erc6900/reference-implementation/interfaces/IModule.sol";

import {IValidationHookModule} from "@erc6900/reference-implementation/interfaces/IValidationHookModule.sol";

import {IValidationModule} from "@erc6900/reference-implementation/interfaces/IValidationModule.sol";

import {IAggregator} from "@eth-infinitism/account-abstraction/interfaces/IAggregator.sol";

import {IPaymaster} from "@eth-infinitism/account-abstraction/interfaces/IPaymaster.sol";

/// @title Known Selectors Library

/// @author Alchemy

/// @notice Library to help to check if a selector is an ERC-6900 module function or a an ERC-4337 contract

/// function.

library KnownSelectorsLib {

/// @notice Check if a selector is an ERC-4337 function.

/// @param selector The selector to check.

/// @return True if the selector is an ERC-4337 function, false otherwise.

function isERC4337Function(uint32 selector) internal pure returns (bool) {

return selector == uint32(IAggregator.validateSignatures.selector)

|| selector == uint32(IAggregator.validateUserOpSignature.selector)

|| selector == uint32(IAggregator.aggregateSignatures.selector)

|| selector == uint32(IPaymaster.validatePaymasterUserOp.selector)

|| selector == uint32(IPaymaster.postOp.selector);

}

/// @notice Check if a selector is an ERC-6900 module function.

/// @param selector The selector to check.

/// @return True if the selector is an ERC-6900 module function, false otherwise.

function isIModuleFunction(uint32 selector) internal pure returns (bool) {

return selector == uint32(IModule.onInstall.selector) || selector == uint32(IModule.onUninstall.selector)

|| selector == uint32(IModule.moduleId.selector)

|| selector == uint32(IExecutionModule.executionManifest.selector)

|| selector == uint32(IExecutionHookModule.preExecutionHook.selector)

|| selector == uint32(IExecutionHookModule.postExecutionHook.selector)

|| selector == uint32(IValidationModule.validateUserOp.selector)

|| selector == uint32(IValidationModule.validateRuntime.selector)

|| selector == uint32(IValidationModule.validateSignature.selector)

|| selector == uint32(IValidationHookModule.preUserOpValidationHook.selector)

|| selector == uint32(IValidationHookModule.preRuntimeValidationHook.selector)

|| selector == uint32(IValidationHookModule.preSignatureValidationHook.selector);

}

}