implementation of module and service socket

src/socket/socket.service.ts

@@ -1,6 +1,8 @@
 import { Injectable } from "@nestjs/common";
 import { InjectModel } from "@nestjs/sequelize";
-import { SocketModel } from "./models/socket.model";
+import { SocketModel } from "./socket.model";
+import { Server } from "socket.io";
+import { NotificationInterface } from "../notifications/notification.interface";
 
 @Injectable()
 export class SocketService {
@@ -10,7 +12,42 @@ export class SocketService {
   ) {
   }
 
-  ClientConnection(data) {
+  ClientConnection(data: any) {
     this.socketModel.create(data);
   }
+
+  sendNotificationToClients(server: Server, notificationData: NotificationInterface) {
+    return new Promise(async (resolveHandlerSend) => {
+      const connectedClients = server.sockets.sockets;
+
+      if (connectedClients.size === 0) {
+        resolveHandlerSend({ status: 404, message: "Failed to find the clients!" });
+        return;
+      }
+
+      let sent: any = false;
+
+      for (const connectedClient of connectedClients) {
+        if (connectedClient[1].handshake.auth.token == notificationData.telephone_id) {
+          sent = await new Promise((resolveSend) => {
+            connectedClient[1].timeout(2000).emit("answer", JSON.stringify(notificationData), (err: any) => {
+              if (err) {
+                resolveSend(false);
+              } else {
+                resolveSend(true);
+              }
+            });
+          });
+        }
+      }
+
+      if (!sent) {
+        resolveHandlerSend({ status: 404, message: "Failed to send to the clients!" });
+        return;
+      }
+      
+      resolveHandlerSend({ status: 200, message: "Success in sending to the clients!" });
+    });
+  }
+
 }