feat: Add getRelayPeerId method for IFluenceClient (#260)

Author: coder11

packages/@tests/aqua/src/index.ts

@@ -36,6 +36,9 @@ export const main = async () => {
 
         console.log('connected');
 
+        const relayPeerId = (await Fluence.getClient()).getRelayPeerId();
+        console.log('relay:', relayPeerId);
+
         await registerHelloWorld({
             hello(str) {
                 return 'Hello, ' + str + '!';

packages/core/interfaces/src/fluenceClient.ts

@@ -141,15 +141,20 @@ export interface IFluenceClient {
     onConnectionStateChange(handler: (state: ConnectionState) => void): ConnectionState;
 
     /**
-     * Return peers secret key as byte array.
+     * Return peer's secret key as byte array.
      */
     getPeerSecretKey(): Uint8Array;
 
     /**
-     * Return peers public key as a base58 string (multihash/CIDv0).
+     * Return peer's public key as a base58 string (multihash/CIDv0).
      */
     getPeerId(): string;
 
+    /**
+     * Return relay's public key as a base58 string (multihash/CIDv0).
+     */
+    getRelayPeerId(): string;
+
     // TODO: come up with a working interface for
     // - particle creation
     // - particle initialization

packages/core/js-peer/src/js-peer/FluencePeer.ts

@@ -142,6 +142,10 @@ export class FluencePeer implements IFluenceClient {
         return this.getStatus().peerId!;
     }
 
+    getRelayPeerId(): string {
+        return this.getStatus().relayPeerId!;
+    }
+
     getPeerSecretKey(): Uint8Array {
         if (!this._keyPair) {
             throw new Error("Can't get key pair: peer is not initialized");