tutorial-1.ts

import "dotenv/config"
import { writeFileSync } from "fs"
import { toSafeSmartAccount } from "permissionless/accounts"
import { Hex, createPublicClient, getContract, http } from "viem"
import { generatePrivateKey, privateKeyToAccount } from "viem/accounts"
import { sepolia } from "viem/chains"
import { createPimlicoClient } from "permissionless/clients/pimlico"
import {  createBundlerClient, entryPoint07Address } from "viem/account-abstraction"
import { createSmartAccountClient } from "permissionless"

const apiKey = process.env.PIMLICO_API_KEY
if (!apiKey) throw new Error("Missing PIMLICO_API_KEY")

const privateKey =
	(process.env.PRIVATE_KEY as Hex) ??
	(() => {
		const pk = generatePrivateKey()
		writeFileSync(".env", `PRIVATE_KEY=${pk}`)
		return pk
	})()

export const publicClient = createPublicClient({
	chain: sepolia,
	transport: http("https://rpc.ankr.com/eth_sepolia"),
})

const account = await toSafeSmartAccount({
	client: publicClient,
	owner: privateKeyToAccount(privateKey),
	entryPoint: {
		address: entryPoint07Address,
		version: "0.7"
	}, // global entrypoint
	version: "1.4.1",
})

console.log({
	accountAddress: await account.getAddress(),
})

console.log(`Smart account address: https://sepolia.etherscan.io/address/${account.address}`)

const pimlicoUrl = `https://api.pimlico.io/v2/sepolia/rpc?apikey=${apiKey}`

const pimlicoClient = createPimlicoClient({
	transport: http(pimlicoUrl),
	entryPoint: {
		address: entryPoint07Address,
		version: "0.7",
	}
})

{
	const smartAccountClient = createSmartAccountClient({
		account,
		chain: sepolia,
		bundlerTransport: http(pimlicoUrl),
		paymaster: pimlicoClient,
		userOperation: {
			estimateFeesPerGas: async () => {
				return (await pimlicoClient.getUserOperationGasPrice()).fast
			},
		}
	})

	const txHash = await smartAccountClient.sendTransaction({
		to: "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
		value: 0n,
		data: "0x1234",

	})

	console.log(`User operation with single transaction included: https://sepolia.etherscan.io/tx/${txHash}`)

	const contract = getContract({
		address: "0x6D7A849791a8E869892f11E01c2A5f3b25a497B6",
		abi: [{"inputs":[],"name":"getLastGreeter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"greet","outputs":[],"stateMutability":"nonpayable","type":"function"}],
		client: {
			public: publicClient,
			wallet: smartAccountClient,
		}
	})

	const txHash2 = await contract.write.greet()

	console.log(`User operation with contract call included: https://sepolia.etherscan.io/tx/${txHash2}`)

	const txHashMultiple = await smartAccountClient.sendTransaction({
		calls: [
			{
				to: "0x3c44cdddb6a900fa2b585dd299e03d12fa4293bc",
				value: 0n,
				data: "0x1234",
			},
			{
				abi: [{"inputs":[],"name":"getLastGreeter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"greet","outputs":[],"stateMutability":"nonpayable","type":"function"}],
				functionName: "greet",
				args: [],
				to: "0x6D7A849791a8E869892f11E01c2A5f3b25a497B6"
			}
		],
	})

	console.log(`User operation with multiple transactions included: https://sepolia.etherscan.io/tx/${txHashMultiple}`)
}

{
	const bundlerClient = createBundlerClient({
		account,
		chain: sepolia,
		transport: http(pimlicoUrl),
		paymaster: pimlicoClient,
		userOperation: {
			estimateFeesPerGas: async () => {
				return (await pimlicoClient.getUserOperationGasPrice()).fast
			},
		}
	})

	const userOpHash = await bundlerClient.sendUserOperation({
		calls: [{
			to: "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
			value: 0n,
			data: "0x1234",
		}]
	})

	const receipt = await bundlerClient.waitForUserOperationReceipt({
		hash: userOpHash,
	})

	console.log(`User operation included: https://sepolia.etherscan.io/tx/${receipt.receipt.transactionHash}`)

	const txHashMultiple = await bundlerClient.sendUserOperation({
		calls: [
			{
				to: "0x3c44cdddb6a900fa2b585dd299e03d12fa4293bc",
				value: 0n,
				data: "0x1234",
			},
			{
				to: "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
				value: 0n,
				data: "0x1234",
			}
		],
	})

	const receipt2 = await bundlerClient.getUserOperationReceipt({
		hash: txHashMultiple,
	})

	console.log(`User operation included: https://sepolia.etherscan.io/tx/${receipt2.receipt.transactionHash}`)
}