Prevent display to go to sleep if user is in a meeting

src/app/app-state-handler.ts

@@ -1,7 +1,8 @@
-import { app } from 'electron';
+import { app, powerSaveBlocker } from 'electron';
 import { logger } from '../common/logger';
-
 class AppStateHandler {
+  private id?: number;
+
   /**
    * Restarts the app with the command line arguments
    * passed from the previous session
@@ -11,6 +12,33 @@ class AppStateHandler {
     app.relaunch();
     app.exit();
   }
+
+  /**
+   * Prevent the display to go to sleep
+   */
+  public preventDisplaySleep(preventSleep: boolean) {
+    logger.info(
+      'App-state: preventDisplaySleep, preventSleep: ' + preventSleep,
+    );
+
+    if (preventSleep) {
+      if (this.id) {
+        logger.info(
+          'App-state: Stop previous power save blocker, id: ' + this.id,
+        );
+        powerSaveBlocker.stop(this.id);
+        this.id = undefined;
+      }
+      this.id = powerSaveBlocker.start('prevent-display-sleep');
+      logger.info('App-state: Prevent display to sleep, id: ' + this.id);
+    } else {
+      if (this.id) {
+        logger.info('App-state: Allow display to sleep, id: ' + this.id);
+        powerSaveBlocker.stop(this.id);
+        this.id = undefined;
+      }
+    }
+  }
 }
 
 const appStateHandler = new AppStateHandler();

src/app/main-api-handler.ts

@@ -206,6 +206,7 @@ ipcMain.on(
       case apiCmds.setIsInMeeting:
         if (typeof arg.isInMeeting === 'boolean') {
           memoryMonitor.setMeetingStatus(arg.isInMeeting);
+          appStateHandler.preventDisplaySleep(arg.isInMeeting);
         }
         break;
       case apiCmds.memoryInfo: