feat: Implement direct notification for new messages and read receipts to conversation participants.

src/messages/messages.gateway.ts

@@ -178,6 +178,16 @@ export class MessagesGateway implements OnGatewayConnection, OnGatewayDisconnect
         .to(`conversation:${data.conversationId}`)
         .emit('new_message', message);
 
+      // Also send directly to the other participant's socket(s)
+      // so they receive the message even if they haven't joined this room
+      const participants = await this.messagesService.getConversationParticipants(data.conversationId);
+      if (participants) {
+        const otherUserId = client.userId === participants.userId
+          ? participants.agentUserId
+          : participants.userId;
+        this.sendToUser(otherUserId, 'new_message', message);
+      }
+
       return { success: true, message };
     } catch (error) {
       return { error: error.message };
@@ -232,12 +242,23 @@ export class MessagesGateway implements OnGatewayConnection, OnGatewayDisconnect
     try {
       await this.messagesService.markMessagesAsRead(data.conversationId, client.userId);
 
-      // Notify the other party that messages have been read
-      client.to(`conversation:${data.conversationId}`).emit('messages_read', {
+      const readEvent = {
         conversationId: data.conversationId,
         readBy: client.userId,
         readAt: new Date(),
-      });
+      };
+
+      // Notify via room (for clients viewing this conversation)
+      client.to(`conversation:${data.conversationId}`).emit('messages_read', readEvent);
+
+      // Also notify the other participant directly
+      const participants = await this.messagesService.getConversationParticipants(data.conversationId);
+      if (participants) {
+        const otherUserId = client.userId === participants.userId
+          ? participants.agentUserId
+          : participants.userId;
+        this.sendToUser(otherUserId, 'messages_read', readEvent);
+      }
 
       return { success: true };
     } catch (error) {

src/messages/messages.service.ts

@@ -555,6 +555,28 @@ export class MessagesService {
     }
   }
 
+  /**
+   * Get participant user IDs for a conversation (lightweight query)
+   */
+  async getConversationParticipants(conversationId: string): Promise<{ userId: string; agentUserId: string } | null> {
+    const conversation = await this.prisma.conversation.findUnique({
+      where: { id: conversationId },
+      select: {
+        userId: true,
+        agentProfile: {
+          select: { userId: true },
+        },
+      },
+    });
+
+    if (!conversation) return null;
+
+    return {
+      userId: conversation.userId,
+      agentUserId: conversation.agentProfile.userId,
+    };
+  }
+
   /**
    * Get total unread count for a user across all conversations
    */