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Merge pull request #2707 from tallycash/wallet-connect-init-2
Wallet connect init 2
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| import SignClient from "@walletconnect/sign-client" | ||
| import { parseUri } from "@walletconnect/utils" | ||
| import { SignClientTypes, SessionTypes } from "@walletconnect/types" | ||
|
|
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| import { ServiceCreatorFunction, ServiceLifecycleEvents } from "../types" | ||
|
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| import BaseService from "../base" | ||
| import PreferenceService from "../preferences" | ||
| import ProviderBridgeService from "../provider-bridge" | ||
| import InternalEthereumProviderService from "../internal-ethereum-provider" | ||
|
|
||
| interface Events extends ServiceLifecycleEvents { | ||
| placeHolderEventForTypingPurposes: string | ||
| } | ||
|
|
||
| /* | ||
| * The walletconnect service is responsible for encapsulating the wallet connect | ||
| * implementation details, maintaining the websocket connection, handling the protocol | ||
| * requirements ant tying the communication with the rest of the extension codebase. | ||
| * | ||
| * NOTE: This is a boundary between a low trust and a high trust context just like the | ||
| * provider bridge service. Extra careful coding is required here, to make sure we check | ||
| * and sanitize the communication properly before it can reach the rest of the codebase. | ||
| */ | ||
| export default class WalletConnectService extends BaseService<Events> { | ||
| signClient: SignClient | undefined | ||
|
|
||
| /* | ||
| * Create a new WalletConnectService. The service isn't initialized until | ||
| * startService() is called and resolved. | ||
| */ | ||
| static create: ServiceCreatorFunction< | ||
| Events, | ||
| WalletConnectService, | ||
| [ | ||
| Promise<ProviderBridgeService>, | ||
| Promise<InternalEthereumProviderService>, | ||
| Promise<PreferenceService> | ||
| ] | ||
| > = async ( | ||
| providerBridgeService, | ||
| internalEthereumProviderService, | ||
| preferenceService | ||
| ) => { | ||
| return new this( | ||
| await providerBridgeService, | ||
| await internalEthereumProviderService, | ||
| await preferenceService | ||
| ) | ||
| } | ||
|
|
||
| private constructor( | ||
| private providerBridgeService: ProviderBridgeService, | ||
| private internalEthereumProviderService: InternalEthereumProviderService, | ||
| private preferenceService: PreferenceService | ||
| ) { | ||
| super() | ||
| } | ||
|
|
||
| protected override async internalStartService(): Promise<void> { | ||
| await super.internalStartService() | ||
|
|
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| await this.initializeWalletConnect() | ||
| } | ||
|
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| protected override async internalStopService(): Promise<void> { | ||
| // TODO: add this back, when we introduce a db to this service. | ||
| // this.db.close() | ||
|
|
||
| await super.internalStopService() | ||
| } | ||
|
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| // eslint-disable-next-line class-methods-use-this | ||
| private async initializeWalletConnect() { | ||
| this.signClient = await WalletConnectService.createSignClient() | ||
| this.defineEventHandlers() | ||
|
|
||
| // TODO: remove this, inject uri | ||
| // simulate connection attempt | ||
| const wcUri = "wc:710f..." | ||
| await this.performConnection(wcUri) | ||
| } | ||
|
|
||
| private static createSignClient(): Promise<SignClient> { | ||
| return SignClient.init({ | ||
| logger: "debug", // TODO: set from .env | ||
| projectId: "9ab2e13df08600b06ac588e1292d6512", // TODO: set from .env | ||
| relayUrl: "wss://relay.walletconnect.com", | ||
| metadata: { | ||
| // TODO: customize this metadata | ||
| name: "Tally Ho Wallet", | ||
| description: "WalletConnect for Tally Ho wallet", | ||
| url: "https://walletconnect.com/", | ||
| icons: ["https://avatars.githubusercontent.com/u/37784886"], | ||
| }, | ||
| }) | ||
| } | ||
|
|
||
| private defineEventHandlers(): void { | ||
| const address = "0xcd6b1f2080bde01d56023c9b50cd91ff09fefd73" // TODO: remove this, replace with real address | ||
|
|
||
| this.signClient?.on( | ||
| "session_proposal", | ||
| async (proposal: SignClientTypes.EventArguments["session_proposal"]) => { | ||
| // TODO: in case of a new connection, this callback should perform request processing AFTER wallet selection/confirmation dialog | ||
| const { id, params } = proposal | ||
| const { requiredNamespaces, relays } = params | ||
|
|
||
| // TODO: expand this section to be able to match requiredNamespaces to actual wallet | ||
| const key = "eip155" | ||
| const accounts = [`eip155:1:${address}`] | ||
| const namespaces: SessionTypes.Namespaces = {} | ||
| namespaces[key] = { | ||
| accounts, | ||
| methods: requiredNamespaces[key].methods, | ||
| events: requiredNamespaces[key].events, | ||
| } | ||
|
|
||
| if (this.signClient !== undefined && relays.length > 0) { | ||
| const { acknowledged } = await this.signClient.approve({ | ||
| id, | ||
| relayProtocol: relays[0].protocol, | ||
| namespaces, | ||
| }) | ||
| await acknowledged() | ||
| } else { | ||
| // TODO: how to handle this case? | ||
| } | ||
| } | ||
| ) | ||
|
|
||
| this.signClient?.on( | ||
| "session_request", | ||
| // eslint-disable-next-line @typescript-eslint/no-unused-vars | ||
| (event: SignClientTypes.EventArguments["session_request"]) => {} | ||
| ) | ||
| } | ||
|
|
||
| async performConnection(uri: string): Promise<void> { | ||
| if (this.signClient === undefined) { | ||
| return | ||
| } | ||
|
|
||
| try { | ||
| const { version } = parseUri(uri) | ||
|
|
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| // Route the provided URI to the v1 SignClient if URI version indicates it, else use v2. | ||
| if (version === 1) { | ||
| // createLegacySignClient({ uri }) | ||
| } else if (version === 2) { | ||
| await this.signClient.pair({ uri }) | ||
| } else { | ||
| // TODO: decide how to handle this | ||
| } | ||
| // eslint-disable-next-line no-empty | ||
| } catch (err: unknown) {} | ||
| } | ||
| } |
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