Add handleGetPairingId

src/simple-server.ts

@@ -298,6 +298,27 @@ class SimpleProcessHandlers {
       throw new Error(errorMessage);
     }
   }
+
+  async handleGetPairingId(event: ServerMessageEvent): Promise<ServerResponse> {
+    if (event.data.type !== MessageType.GET_PAIRING_ID) {
+      throw new Error('Invalid message type');
+    }
+
+    if (!this.service.isPaired()) {
+      throw new Error('Device not paired');
+    }
+
+    try {
+      const pairingId = this.service.getPairingProcessId();
+      return {
+        type: MessageType.GET_PAIRING_ID,
+        pairingId,
+        messageId: event.data.messageId
+      };
+    } catch (e) {
+      const errorMessage = e instanceof Error ? e.message : String(e || 'Unknown error');
+      throw new Error(errorMessage);
+    }
   }
 
   async handleMessage(event: ServerMessageEvent): Promise<ServerResponse> {
@@ -313,6 +334,8 @@ class SimpleProcessHandlers {
           return await this.handleUpdateProcess(event);
         case MessageType.GET_MY_PROCESSES:
           return await this.handleGetMyProcesses(event);
+        case MessageType.GET_PAIRING_ID:
+          return await this.handleGetPairingId(event);
         default:
           throw new Error(`Unhandled message type: ${event.data.type}`);
       }