Merge feat/logger (#1)

Fixed encoding issue: changed from btoa(String.fromCharCode(...)) to Buffer.from().toString('base64')
Maintains persistent identity through private key storage
Provides better state management and error tracking
Supports connection acceptance/rejection flow
Properly handles node lifecycle events
Can be cleanly shut down with resource cleanup

Co-authored-by: Chris Daßler <chris.dassler@me.com>
Reviewed-on: #1

implementations/Libp2pComponent.ts

@@ -3,6 +3,7 @@
  */
 
 import { NativeEventEmitter, NativeModules } from 'react-native';
+import AsyncStorage from '@react-native-async-storage/async-storage';
 import { LIBP2P_CONFIG } from '../utils/constants';
 import type { ConnectionStatusEvent, PeerDiscoveredEvent, PeerInfoEvent } from '../utils/types';
 import type {
@@ -74,8 +75,13 @@ export class Libp2pComponent implements ILibp2pComponent {
   private _peerId?: PeerId;
   private _multiaddrs: Multiaddr[] = [];
   private _started: boolean = false;
+  private _starting: boolean = false;
+  private _error: string | null = null;
   private cachedConnections: Connection[] = [];
   private options: Libp2pOptions;
+  private nodeStartedListener: any = null;
+  private nodeStoppedListener: any = null;
+  private errorListener: any = null;
 
   constructor(options?: Libp2pOptions, nativeModules?: typeof NativeModules) {
     // Allow dependency injection of NativeModules for testing
@@ -90,6 +96,7 @@ export class Libp2pComponent implements ILibp2pComponent {
 
     this.setupNativeEventListeners();
     this.setupProtocolHandlers();
+    this.setupStateListeners();
   }
 
   get peerId(): PeerId | null {
@@ -100,6 +107,14 @@ export class Libp2pComponent implements ILibp2pComponent {
     return this._multiaddrs;
   }
 
+  get isStarting(): boolean {
+    return this._starting;
+  }
+
+  get error(): string | null {
+    return this._error;
+  }
+
   private setupNativeEventListeners(): void {
     // Map native events to js-libp2p style events
 
@@ -195,6 +210,27 @@ export class Libp2pComponent implements ILibp2pComponent {
     );
   }
 
+  private setupStateListeners(): void {
+    // Listen for node started event
+    this.nodeStartedListener = this.eventEmitter.addListener('onNodeStarted', () => {
+      this._started = true;
+      this._starting = false;
+      this._error = null;
+    });
+
+    // Listen for node stopped event
+    this.nodeStoppedListener = this.eventEmitter.addListener('onNodeStopped', () => {
+      this._started = false;
+      this._starting = false;
+    });
+
+    // Listen for error events
+    this.errorListener = this.eventEmitter.addListener('onError', (event: any) => {
+      this._error = event.error || 'Unknown error';
+      this._starting = false;
+    });
+  }
+
   private emit<K extends keyof Libp2pEvents>(event: K, detail: unknown): void {
     const handlers = this.eventHandlers.get(event);
     if (handlers) {
@@ -206,6 +242,14 @@ export class Libp2pComponent implements ILibp2pComponent {
   }
 
   async start(): Promise<void> {
+    if (this._started || this._starting) {
+      return; // Already started or starting
+    }
+
+    this._starting = true;
+    this._error = null;
+
+    try {
       // Register protocols if any
       if (this.options.protocols && this.nativeModule.registerProtocolHandler) {
         for (const protocol of this.options.protocols) {
@@ -213,27 +257,65 @@ export class Libp2pComponent implements ILibp2pComponent {
         }
       }
 
+      // Load stored private key if available and not provided
+      let privateKeyBytes = this.options.keypair?.privateKey;
+      if (!privateKeyBytes) {
+        try {
+          const storedKey = await AsyncStorage.getItem('libp2p_private_key');
+          if (storedKey) {
+            privateKeyBytes = new Uint8Array(JSON.parse(storedKey));
+          }
+        } catch (err) {
+          // Failed to load stored key, will generate new one
+        }
+      }
+
       // Pass configuration options to native module including keypair
-    const config = {
+      const config: any = {
         tcpPort: this.options.config?.tcpPort,
         wsPort: this.options.config?.wsPort,
-      // Convert Uint8Array to base64 for passing to native module
-      keypair: this.options.keypair
-        ? {
-            privateKey: btoa(String.fromCharCode(...this.options.keypair.privateKey)),
-            publicKey: btoa(String.fromCharCode(...this.options.keypair.publicKey)),
-          }
-        : undefined,
       };
 
-    await this.nativeModule.startLibp2p(config);
+      if (privateKeyBytes) {
+        // Convert Uint8Array to base64 for passing to native module
+        config.privateKey = Buffer.from(privateKeyBytes).toString('base64');
+      }
+
+      const result = await this.nativeModule.startLibp2p(config);
+
+      // Update internal state from result
+      if (result.peerId) {
+        this._peerId = new SimplePeerId(result.peerId);
+      }
+      if (result.multiaddrs) {
+        this._multiaddrs = result.multiaddrs.map((addr: string) => new SimpleMultiaddr(addr));
+      }
+
+      // Store the private key if we generated a new one
+      if (result.privateKey && !privateKeyBytes) {
+        try {
+          const keyBytes = Buffer.from(result.privateKey, 'base64');
+          await AsyncStorage.setItem('libp2p_private_key', JSON.stringify(Array.from(keyBytes)));
+        } catch (err) {
+          // Failed to store key, but continue
+        }
+      }
+
       this._started = true;
+      this._starting = false;
+    } catch (error) {
+      this._starting = false;
+      this._error = error instanceof Error ? error.message : 'Failed to start';
+      throw error;
+    }
   }
 
   async stop(): Promise<void> {
     try {
       await this.nativeModule.stopLibp2p();
       this._started = false;
+      this._peerId = undefined;
+      this._multiaddrs = [];
     } catch (error) {
       // If libp2p wasn't running, that's okay - just update our state
       const errorMessage = error instanceof Error ? error.message : String(error);
@@ -247,6 +329,24 @@ export class Libp2pComponent implements ILibp2pComponent {
     }
   }
 
+  cleanup(): void {
+    // Remove state listeners
+    if (this.nodeStartedListener) {
+      this.nodeStartedListener.remove();
+      this.nodeStartedListener = null;
+    }
+    if (this.nodeStoppedListener) {
+      this.nodeStoppedListener.remove();
+      this.nodeStoppedListener = null;
+    }
+    if (this.errorListener) {
+      this.errorListener.remove();
+      this.errorListener = null;
+    }
+    // Clear event handlers
+    this.eventHandlers.clear();
+  }
+
   async dial(multiaddr: string): Promise<Connection> {
     await this.nativeModule.connectToPeer(multiaddr);
 
@@ -370,6 +470,20 @@ export class Libp2pComponent implements ILibp2pComponent {
       throw new Error('Protocol sending not supported on this platform');
     }
   }
+
+  async acceptConnection(peerId: string): Promise<void> {
+    if (!this.nativeModule.acceptConnection) {
+      throw new Error('acceptConnection not supported by native module');
+    }
+    await this.nativeModule.acceptConnection(peerId);
+  }
+
+  async rejectConnection(peerId: string): Promise<void> {
+    if (!this.nativeModule.rejectConnection) {
+      throw new Error('rejectConnection not supported by native module');
+    }
+    await this.nativeModule.rejectConnection(peerId);
+  }
 }
 
 // Type definition for CustomEventInit

interfaces/ILibp2pComponent.ts

@@ -43,6 +43,9 @@ export interface ProtocolHandler {
 export interface ILibp2pComponent {
   peerId: PeerId | null;
   multiaddrs: Multiaddr[];
+  isStarted: boolean;
+  isStarting: boolean;
+  error: string | null;
 
   start(): Promise<void>;
   stop(): Promise<void>;
@@ -52,6 +55,9 @@ export interface ILibp2pComponent {
   sendProtocolData(peerId: string, protocolId: string, data: Uint8Array): Promise<void>;
   refreshDiscovery(): Promise<void>;
   pingPeer(peerId: string): Promise<{ success: boolean; rtt?: number; peerId: string }>;
+  acceptConnection(peerId: string): Promise<void>;
+  rejectConnection(peerId: string): Promise<void>;
+  cleanup(): void;
 
   addEventListener<K extends keyof Libp2pEvents>(
     event: K,