feat: Add an admin endpoint to retrieve the total count of unread support messages.

src/support-chat/support-chat.controller.ts

@@ -9,6 +9,8 @@ import {
   UseGuards,
   HttpCode,
   HttpStatus,
+  Inject,
+  forwardRef,
 } from '@nestjs/common';
 import {
   ApiTags,
@@ -24,13 +26,18 @@ import { JwtAuthGuard } from '../auth/guards';
 import { CurrentUser } from '../auth/decorators';
 import { Roles } from '../auth/decorators/roles.decorator';
 import { UserRole, SupportChatStatus } from '@prisma/client';
+import { MessagesGateway } from '../messages/messages.gateway';
 
 @ApiTags('Support Chat')
 @Controller('support-chat')
 @UseGuards(JwtAuthGuard)
 @ApiBearerAuth('JWT-auth')
 export class SupportChatController {
-  constructor(private readonly supportChatService: SupportChatService) {}
+  constructor(
+    private readonly supportChatService: SupportChatService,
+    @Inject(forwardRef(() => MessagesGateway))
+    private readonly messagesGateway: MessagesGateway,
+  ) {}
 
   // ==========================================
   // GET OR CREATE SUPPORT CHAT (User/Agent)
@@ -95,7 +102,24 @@ export class SupportChatController {
     await this.supportChatService.getChat(chatId, userId, isAdmin);
 
     const senderRole = role === UserRole.ADMIN ? 'ADMIN' : 'USER';
-    return this.supportChatService.sendMessage(chatId, userId, senderRole, dto.content);
+    const message = await this.supportChatService.sendMessage(chatId, userId, senderRole, dto.content);
+
+    // Emit WebSocket events for real-time updates
+    this.messagesGateway.server.to(`support:${chatId}`).emit('support_new_message', message);
+
+    // If user/agent sent the message, notify admins about unread count
+    if (senderRole !== 'ADMIN') {
+      const unreadTotal = await this.supportChatService.getAdminUnreadTotal();
+      this.messagesGateway.server.to('admin_room').emit('support_unread_update', { unreadTotal });
+    }
+
+    // If admin sent the message, notify the user directly
+    if (senderRole === 'ADMIN') {
+      const chat = await this.supportChatService.getChat(chatId, userId, true);
+      this.messagesGateway.sendToUser(chat.userId, 'support_new_message', message);
+    }
+
+    return message;
   }
 
   // ==========================================
@@ -109,7 +133,26 @@ export class SupportChatController {
     @Param('id') chatId: string,
     @CurrentUser('role') role: UserRole,
   ) {
-    return this.supportChatService.markAsRead(chatId, role);
+    const result = await this.supportChatService.markAsRead(chatId, role);
+
+    // If admin marked as read, update sidebar badge for all admins
+    if (role === UserRole.ADMIN) {
+      const unreadTotal = await this.supportChatService.getAdminUnreadTotal();
+      this.messagesGateway.server.to('admin_room').emit('support_unread_update', { unreadTotal });
+    }
+
+    return result;
+  }
+
+  // ==========================================
+  // ADMIN: GET TOTAL UNREAD COUNT
+  // ==========================================
+  @Get('admin/unread-total')
+  @Roles(UserRole.ADMIN)
+  @ApiOperation({ summary: 'Admin: Get total unread support message count' })
+  @ApiResponse({ status: 200, description: 'Total unread count returned' })
+  async getUnreadTotal() {
+    return this.supportChatService.getAdminUnreadTotal();
   }
 
   // ==========================================