Initial commit: Angular frontend and Expressjs backend

worklenz-backend/src/socket.io/commands/on-disconnect.ts

@@ -0,0 +1,14 @@
+import {Server, Socket} from "socket.io";
+import db from "../../config/db";
+
+import {log} from "../util";
+
+export async function on_disconnect(io: Server, socket: Socket, reason?: string) {
+  log(socket.id, `disconnected (${reason})`);
+  try {
+    const q = "UPDATE users SET socket_id = NULL WHERE socket_id = $1";
+    await db.query(q, [socket.id]);
+  } catch (error) {
+    // ignored
+  }
+}