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use hardhat config from hardhat runtime environment #3

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use hardhat config from hardhat runtime environment #3

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37 changes: 9 additions & 28 deletions src/MetamaskClient.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import {BaseProvider} from '@ethersproject/providers';
import hre, { ethers } from "hardhat";
import "@nomicfoundation/hardhat-ethers";
import {SignerWithAddress} from "@nomicfoundation/hardhat-ethers/signers";
import "@typechain/hardhat";
Expand All @@ -22,38 +23,14 @@ export class TransactionWrapper {
}
}

export type ClientConfig = {
hardhatConfig?: any,
networkName?: any,
network?: any,
ethers: any,
}

export class MetamaskClient {
private filledTemplate: string = '';
private readonly port: number;
private id = 1;
private txHashMap = new Map<number, string>();
network: any;
server: any;
ethers: any;

constructor(config: ClientConfig, private estimateGas: boolean = false, defaultServerPort: number = 8989) {
this.ethers = config.ethers;

if (config.hardhatConfig == null && config.network == null)
throw new Error("Invalid configuration");

if (config.network == null) {
if (config.hardhatConfig.networks == null || config.hardhatConfig.networks![config.networkName] == null)
throw new Error("Requested network is not configured: " + config.networkName);
this.network = config.hardhatConfig.networks![config.networkName];
this.network.name = config.networkName;
} else {
this.network = config.network.config;
this.network.name = config.network.name;
}

constructor(private estimateGas: boolean = false, defaultServerPort: number = 8989) {
const app: Express = express();
this.port = process.env.PORT ? Number(process.env.PORT) : defaultServerPort;
app.use(bodyParser.urlencoded({extended: false}));
Expand All @@ -79,7 +56,8 @@ export class MetamaskClient {

public async getSigner(): Promise<SignerWithAddress> {
return new Promise<SignerWithAddress>((resolve, reject) => {
this.ethers.getSigners().then((signers: any[]) => {
// hook hardhat's `ethers` object
ethers.getSigners().then((signers: any[]) => {
let signer = signers[0];
// let f = signer.sendTransaction;
let x = async (transaction: any) => {
Expand Down Expand Up @@ -121,8 +99,11 @@ export class MetamaskClient {
this.filledTemplate = Eta.render(
syncReadFile('template.html'), {
transactions: transactions,
network: this.network.name,
chainId: "0x" + (this.network.chainId).toString(16),
network: hre.network.name,
// `31337` is the chainId of default `localhost` network. Reference: https://hardhat.org/hardhat-network/docs/reference#chainid
// `localhost` network's chainId is not explicitly configured in `hardhat.config.ts`
// so we use `31337` as default value
chainId: "0x" + (hre.network.config.chainId ?? 31337).toString(16),
serverPort: this.port
})! as string;
open(`http://localhost:${this.port}/send-transactions`);
Expand Down