send notif after chat

src/app.module.ts

@@ -44,7 +44,6 @@ import { TicketModule } from './modules/ticket/ticket.module';
     ProductModule,
     RolesModule,
     PaymentModule,
-    // OrderModule,
     NotificationsModule,
     EventEmitterModule.forRoot(),
     PrintModule,

src/modules/chat/DTO/create-chat.dto.ts

@@ -7,7 +7,7 @@ import { TicketMessageEnum } from "../../../common/enums/message.enum";
 export class CreateChatDto {
   @IsNotEmpty({ message: TicketMessageEnum.MESSAGE_REQUIRED })
   @IsString({ message: TicketMessageEnum.MESSAGE_STRING })
-  @Length(5, 5000, { message: TicketMessageEnum.MESSAGE_LENGTH })
+  @Length(1, 5000, { message: TicketMessageEnum.MESSAGE_LENGTH })
   @ApiProperty({ description: "The message content of the ticket" })
   content: string;
 

src/modules/chat/chat.module.ts

@@ -7,17 +7,20 @@ import { MikroOrmModule } from "@mikro-orm/nestjs";
 import { AdminModule } from "../admin/admin.module";
 import { UserModule } from "../user/user.module";
 import { JwtModule } from "@nestjs/jwt";
-
+import { Request } from "../request/entities/request.entity";
-
+import { Order } from "../order/entities/order.entity";
+import { NotificationsModule } from "../notification/notifications.module";
+import { ChatListeners } from "./listeners/chat.listeners";
 
 @Module({
   imports: [
-    MikroOrmModule.forFeature([Chat]),
+    MikroOrmModule.forFeature([Chat, Request, Order]),
     AdminModule,
     UserModule,
-    JwtModule.register({})
+    JwtModule.register({}),
+    NotificationsModule,
   ],
-  providers: [ChattService, ChatRepository],
+  providers: [ChattService, ChatRepository, ChatListeners],
   controllers: [ChatController],
   exports: [ChattService, ChatRepository],
 })

src/modules/chat/events/chat.events.ts

@@ -0,0 +1,6 @@
+export class ChatCreatedByAdminEvent {
+  constructor(
+    public readonly refId: string,
+    public readonly chatId: string,
+  ) {}
+}

src/modules/chat/listeners/chat.listeners.ts

@@ -0,0 +1,84 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { OnEvent } from '@nestjs/event-emitter';
+import { EntityManager } from '@mikro-orm/postgresql';
+import { Request } from 'src/modules/request/entities/request.entity';
+import { Order } from 'src/modules/order/entities/order.entity';
+import { NotificationService } from 'src/modules/notification/services/notification.service';
+import { NotifChannelEnum, NotifTitle } from 'src/modules/notification/interfaces/notification.interface';
+import { ChatCreatedByAdminEvent } from '../events/chat.events';
+
+@Injectable()
+export class ChatListeners {
+  private readonly logger = new Logger(ChatListeners.name);
+
+  constructor(
+    private readonly em: EntityManager,
+    private readonly notificationService: NotificationService,
+  ) {}
+
+  @OnEvent(ChatCreatedByAdminEvent.name)
+  async handleChatCreatedByAdmin(event: ChatCreatedByAdminEvent) {
+    try {
+      this.logger.log(
+        `Chat created by admin: refId=${event.refId}, chatId=${event.chatId}`,
+      );
+
+      const user = await this.findUserByRefId(event.refId);
+      if (!user) {
+        this.logger.warn(
+          `No user found for refId=${event.refId}, skipping notification`,
+        );
+        return;
+      }
+
+      const body = 'پیام جدید از پشتیبانی برای شما ارسال شده است.';
+
+      await this.notificationService.sendNotification({
+        channels: [NotifChannelEnum.SMS],
+        recipients: [{ userId: user.id }],
+        message: {
+          title: NotifTitle.NEW_TICKET,
+          content: body,
+          sms: {
+            templateId: '',
+            parameters: {},
+          },
+        },
+      });
+
+      this.logger.log(
+        `Notification sent to user ${user.id} for admin chat on refId=${event.refId}`,
+      );
+    } catch (error) {
+      this.logger.error(
+        `Failed to send notification for chat created by admin: refId=${event.refId}`,
+        error instanceof Error ? error.stack : String(error),
+      );
+    }
+  }
+
+  /**
+   * Find the user associated with refId: first search in requests, then in orders.
+   */
+  private async findUserByRefId(refId: string): Promise<{ id: string } | null> {
+    const request = await this.em.findOne(
+      Request,
+      { id: refId },
+      { populate: ['user'], fields: ['id', 'user'] },
+    );
+    if (request?.user?.id) {
+      return { id: request.user.id };
+    }
+
+    const order = await this.em.findOne(
+      Order,
+      { id: refId },
+      { populate: ['user'], fields: ['id', 'user'] },
+    );
+    if (order?.user?.id) {
+      return { id: order.user.id };
+    }
+
+    return null;
+  }
+}

src/modules/chat/providers/chat.service.ts

@@ -9,6 +9,8 @@ import { UpdateChatDto } from "../DTO/update-chat.dto";
 import { Chat } from "../entities/ticket.entity";
 import { AdminService } from "src/modules/admin/providers/admin.service";
 import { UserService } from "src/modules/user/providers/user.service";
+import { EventEmitter2 } from "@nestjs/event-emitter";
+import { ChatCreatedByAdminEvent } from "../events/chat.events";
 
 @Injectable()
 export class ChattService {
@@ -18,18 +20,22 @@ export class ChattService {
     private readonly adminService: AdminService,
     private readonly userService: UserService,
     private readonly em: EntityManager,
+    private readonly eventEmitter: EventEmitter2,
   ) { }
 
   async createChatAsAdmin(refId: string, dto: CreateChatDto, adminId: string) {
 
-    // const orderItem = await this.findOrderItemOrFail(refId)
-
     let admin: null | Admin = null
 
     admin = await this.adminService.findOrFail(adminId)
 
     const ticket = await this.createChat(refId, dto, undefined, admin)
 
+    this.eventEmitter.emit(
+      ChatCreatedByAdminEvent.name,
+      new ChatCreatedByAdminEvent(refId, ticket.id),
+    );
+
     return ticket
 
   }