permissionless/actions/erc7579/isModuleInstalled.ts

A utility library for working with ERC-4337

import {
    type Address,
    type Chain,
    type Client,
    ContractFunctionExecutionError,
    type Hex,
    type OneOf,
    type Transport,
    decodeFunctionResult,
    encodeFunctionData,
    getAddress
} from "viem"
import type {
    GetSmartAccountParameter,
    SmartAccount
} from "viem/account-abstraction"
import { call, readContract } from "viem/actions"
import { getAction, parseAccount } from "viem/utils"
import { AccountNotFoundError } from "../../errors/index.js"
import { type ModuleType, parseModuleTypeId } from "./supportsModule.js"

export type IsModuleInstalledParameters<
    TSmartAccount extends SmartAccount | undefined
> = GetSmartAccountParameter<TSmartAccount> & {
    type: ModuleType
    address: Address
} & OneOf<
        | {
              additionalContext: Hex
          }
        | {
              context: Hex
          }
    >

export async function isModuleInstalled<
    TSmartAccount extends SmartAccount | undefined
>(
    client: Client<Transport, Chain | undefined, TSmartAccount>,
    parameters: IsModuleInstalledParameters<TSmartAccount>
): Promise<boolean> {
    const {
        account: account_ = client.account,
        address,
        context,
        additionalContext
    } = parameters

    if (!account_) {
        throw new AccountNotFoundError({
            docsPath: "/docs/actions/wallet/sendTransaction"
        })
    }

    const account = parseAccount(account_) as SmartAccount

    const publicClient = account.client

    const abi = [
        {
            type: "function",
            name: "isModuleInstalled",
            inputs: [
                {
                    name: "moduleType",
                    type: "uint256",
                    internalType: "uint256"
                },
                { name: "module", type: "address", internalType: "address" },
                {
                    name: "additionalContext",
                    type: "bytes",
                    internalType: "bytes"
                }
            ],
            outputs: [{ name: "", type: "bool", internalType: "bool" }],
            stateMutability: "view"
        }
    ] as const

    try {
        return await getAction(
            publicClient,
            readContract,
            "readContract"
        )({
            abi,
            functionName: "isModuleInstalled",
            args: [
                parseModuleTypeId(parameters.type),
                getAddress(address),
                context ?? additionalContext
            ],
            address: account.address
        })
    } catch (error) {
        if (error instanceof ContractFunctionExecutionError) {
            const { factory, factoryData } = await account.getFactoryArgs()

            const result = await getAction(
                publicClient,
                call,
                "call"
            )({
                factory: factory,
                factoryData: factoryData,
                to: account.address,
                data: encodeFunctionData({
                    abi,
                    functionName: "isModuleInstalled",
                    args: [
                        parseModuleTypeId(parameters.type),
                        getAddress(address),
                        context ?? additionalContext
                    ]
                })
            })

            if (!result || !result.data) {
                throw new Error("accountId result is empty")
            }

            return decodeFunctionResult({
                abi,
                functionName: "isModuleInstalled",
                data: result.data
            })
        }

        throw error
    }
}