feat: implement privacy-aware profile visibility and activity status filtering using optional authentication guard

src/connection-requests/connection-requests.service.ts

@@ -17,6 +17,50 @@ export class ConnectionRequestsService {
     private eventEmitter: EventEmitter2,
   ) {}
 
+  /**
+   * Check if a user is connected to an agent (ACCEPTED connection exists)
+   */
+  async isConnected(userId: string, agentUserId: string): Promise<boolean> {
+    const connection = await this.prisma.connectionRequest.findFirst({
+      where: {
+        status: ConnectionStatus.ACCEPTED,
+        OR: [
+          // User → Agent connection
+          { userId, agentProfile: { userId: agentUserId } },
+          // Agent → User connection (if agent has a userId match)
+          { userId: agentUserId, agentProfile: { userId } },
+        ],
+      },
+    });
+    return !!connection;
+  }
+
+  /**
+   * Get all user IDs connected to a given user (ACCEPTED connections)
+   */
+  async getConnectedUserIds(userId: string): Promise<string[]> {
+    const connections = await this.prisma.connectionRequest.findMany({
+      where: {
+        status: ConnectionStatus.ACCEPTED,
+        OR: [
+          { userId },
+          { agentProfile: { userId } },
+        ],
+      },
+      select: {
+        userId: true,
+        agentProfile: { select: { userId: true } },
+      },
+    });
+
+    const connectedIds = new Set<string>();
+    for (const conn of connections) {
+      if (conn.userId !== userId) connectedIds.add(conn.userId);
+      if (conn.agentProfile.userId !== userId) connectedIds.add(conn.agentProfile.userId);
+    }
+    return Array.from(connectedIds);
+  }
+
   /**
    * Create a new connection request from user to agent
    */