Initial commit: Angular frontend and Expressjs backend

worklenz-backend/src/shared/io.ts

@@ -0,0 +1,48 @@
+import {Server} from "socket.io";
+import db from "../config/db";
+import {SocketEvents} from "../socket.io/events";
+
+export class IO {
+  private static instance: Server | null = null;
+
+  public static setInstance(io: Server) {
+    this.instance = io;
+  }
+
+  public static getInstance() {
+    return this.instance;
+  }
+
+  public static getSocketById(socketId: string) {
+    return this.instance?.sockets.sockets?.get(socketId) || null;
+  }
+
+  public static emit(event: SocketEvents, socketId: string, data?: any) {
+    this.getSocketById(socketId)?.emit(event.toString(), data);
+  }
+
+  public static async emitByUserId(id: string, userId: string | null, event: SocketEvents, data?: any) {
+    try {
+      if (id === userId) return;
+      const q = `SELECT socket_id FROM users WHERE id = $1;`;
+      const result = await db.query(q, [id]);
+      const [user] = result.rows;
+      if (!user) return;
+      this.emit(event, user.socket_id, data);
+    } catch (error) {
+      // ignored
+    }
+  }
+
+  public static async emitByTeamMemberId(id: string, userId: string | null, event: SocketEvents, data?: any) {
+    try {
+      const q = `SELECT socket_id FROM users WHERE id != $1 AND id IN (SELECT user_id FROM team_members WHERE id = $2);`;
+      const result = await db.query(q, [userId, id]);
+      const [user] = result.rows;
+      if (!user) return;
+      this.emit(event, user.socket_id, data);
+    } catch (error) {
+      // ignored
+    }
+  }
+}