Add back posthog connection time tracking (#2316)

Signed-off-by: Timo K <toger5@hotmail.de>
Co-authored-by: Robin <robin@robin.town>

src/analytics/PosthogAnalytics.ts

@@ -31,6 +31,7 @@ import {
   UndecryptableToDeviceEventTracker,
   QualitySurveyEventTracker,
   CallDisconnectedEventTracker,
+  CallConnectDurationTracker,
 } from "./PosthogEvents";
 import { Config } from "../config/Config";
 import { getUrlParams } from "../UrlParams";
@@ -444,4 +445,5 @@ export class PosthogAnalytics {
   public eventUndecryptableToDevice = new UndecryptableToDeviceEventTracker();
   public eventQualitySurvey = new QualitySurveyEventTracker();
   public eventCallDisconnected = new CallDisconnectedEventTracker();
+  public eventCallConnectDuration = new CallConnectDurationTracker();
 }

src/analytics/PosthogEvents.ts

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 import { DisconnectReason } from "livekit-client";
+import { logger } from "matrix-js-sdk/src/logger";
 
 import {
   IPosthogEvent,
@@ -201,3 +202,38 @@ export class CallDisconnectedEventTracker {
     });
   }
 }
+
+interface CallConnectDuration extends IPosthogEvent {
+  eventName: "CallConnectDuration";
+  totalDuration: number;
+  websocketDuration: number;
+  peerConnectionDuration: number;
+}
+
+export class CallConnectDurationTracker {
+  private connectStart = 0;
+  private websocketConnected = 0;
+  public cacheConnectStart(): void {
+    this.connectStart = Date.now();
+  }
+  public cacheWsConnect(): void {
+    this.websocketConnected = Date.now();
+  }
+
+  public track(options = { log: false }): void {
+    const now = Date.now();
+    const totalDuration = now - this.connectStart;
+    const websocketDuration = this.websocketConnected - this.connectStart;
+    const peerConnectionDuration = now - this.websocketConnected;
+    PosthogAnalytics.instance.trackEvent<CallConnectDuration>({
+      eventName: "CallConnectDuration",
+      totalDuration,
+      websocketDuration,
+      peerConnectionDuration,
+    });
+    if (options.log)
+      logger.log(
+        `Time to connect:\ntotal: ${totalDuration}ms\npeerConnection: ${websocketDuration}ms\nwebsocket: ${peerConnectionDuration}ms`,
+      );
+  }
+}