82 lines
2.3 KiB
TypeScript
82 lines
2.3 KiB
TypeScript
import { getTransactionFields, makeTransaction } from 'libs/transaction';
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import { IFullWallet } from '../IWallet';
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import { bufferToHex } from 'ethereumjs-util';
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import { configuredStore } from 'store';
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import { getNodeLib, getNetworkNameByChainId } from 'selectors/config';
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import Web3Node, { isWeb3Node } from 'libs/nodes/web3';
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import { INode } from 'libs/nodes/INode';
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export default class Web3Wallet implements IFullWallet {
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private address: string;
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private network: string;
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constructor(address: string, network: string) {
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this.address = address;
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this.network = network;
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}
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public getAddressString(): string {
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return this.address;
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}
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public signRawTransaction(): Promise<Buffer> {
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return Promise.reject(new Error('Web3 wallets cannot sign raw transactions.'));
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}
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public async signMessage(msg: string): Promise<string> {
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const msgHex = bufferToHex(Buffer.from(msg));
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const state = configuredStore.getState();
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const nodeLib: Web3Node | INode = getNodeLib(state);
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if (!nodeLib) {
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throw new Error('');
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}
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if (!isWeb3Node(nodeLib)) {
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throw new Error('Web3 wallets can only be used with a Web3 node.');
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}
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return nodeLib.signMessage(msgHex, this.address);
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}
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public async sendTransaction(serializedTransaction: string): Promise<string> {
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const transactionInstance = makeTransaction(serializedTransaction);
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const { to, value, gasLimit: gas, gasPrice, data, nonce, chainId } = getTransactionFields(
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transactionInstance
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);
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const from = this.address;
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const web3Tx = {
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from,
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to,
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value,
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gas,
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gasPrice,
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data,
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nonce,
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chainId
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};
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const state = configuredStore.getState();
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const nodeLib: Web3Node | INode | undefined = getNodeLib(state);
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if (!isWeb3Node(nodeLib)) {
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throw new Error('Web3 wallets can only be used with a Web3 node.');
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}
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await this.networkCheck(nodeLib);
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return nodeLib.sendTransaction(web3Tx);
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}
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private async networkCheck(lib: Web3Node) {
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const netId = await lib.getNetVersion();
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const netName = getNetworkNameByChainId(configuredStore.getState(), netId);
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if (this.network !== netName) {
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throw new Error(
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`Expected MetaMask / Mist network to be ${
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this.network
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}, but got ${netName}. Please change the network or refresh the page.`
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);
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}
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}
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}
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