add transfer erc20 example

scripts/secp256r1/transfer-token-paymaster-bundler.ts

@@ -0,0 +1,65 @@
+import { ethers } from "hardhat"
+import * as fs from "fs"
+import * as path from "path"
+import ecPem from "ec-pem"
+import { EntryPoint } from "@account-abstraction/contracts"
+import { Client, Presets } from "userop"
+import { P256AccountFactory } from "../../typechain"
+import { P2565Signer } from "../userop/p256-signature"
+import { P256Account } from "../userop/p256-account"
+import { parseEther } from "ethers/lib/utils"
+
+async function main() {
+    const rpc = "https://babel-api.testnet.iotex.io"
+    const bundlerRpc = "https://bundler.testnet.w3bstream.com"
+    const accountFactory = (await ethers.getContract("P256AccountFactory")) as P256AccountFactory
+    const accountTpl = await ethers.getContractFactory("P256Account")
+    const entryPoint = (await ethers.getContract("EntryPoint")) as EntryPoint
+    const client = await Client.init(rpc, {
+        entryPoint: entryPoint.address,
+        overrideBundlerRpc: bundlerRpc,
+    })
+
+    const keyContent = fs.readFileSync(path.join(__dirname, "key.pem"))
+    const keyPair = ecPem.loadPrivateKey(keyContent)
+    const signer = new P2565Signer(keyPair)
+
+    const ERC20_ABI = ["function transfer(address to, uint amount)"]
+    const erc20Interface = new ethers.utils.Interface(ERC20_ABI)
+
+    const callData = accountTpl.interface.encodeFunctionData("execute", [
+        "0x670EC5BE7395F0eaf76e527Ef6bd4E3bFdD47A7B",
+        0,
+        erc20Interface.encodeFunctionData("transfer", [
+            "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
+            parseEther("1.0"),
+        ]),
+    ])
+
+    const accountBuilder = await P256Account.init(signer, rpc, {
+        overrideBundlerRpc: bundlerRpc,
+        factory: accountFactory.address,
+        entryPoint: entryPoint.address,
+        salt: 0,
+        paymasterMiddleware: Presets.Middleware.verifyingPaymaster(
+            // paymaster rpc
+            `https://paymaster.testnet.w3bstream.com/rpc/${process.env.API_KEY}`,
+            ""
+        ),
+    })
+    accountBuilder.setCallData(callData)
+
+    const account = accountBuilder.getSender()
+
+    const response = await client.sendUserOperation(accountBuilder)
+    console.log(`Transfer ERC20 account ${account} ophash: ${response.userOpHash}`)
+    const userOperationEvent = await response.wait()
+    console.log(`Transfer account ${account} txhash: ${userOperationEvent?.transactionHash}`)
+}
+
+main()
+    .then(() => process.exit(0))
+    .catch((error) => {
+        console.error(error)
+        process.exit(1)
+    })