OpenSlides/client/src/app/core/ui-services/update.service.ts

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import { Injectable } from '@angular/core';
import { SwUpdate } from '@angular/service-worker';
import { MatSnackBar } from '@angular/material';
import { NotifyService } from '../core-services/notify.service';
/**
* Handle Service Worker updates using the SwUpdate service form angular.
*/
@Injectable({
providedIn: 'root'
})
export class UpdateService {
private static NOTIFY_NAME = 'swCheckForUpdate';
/**
* Constructor.
* Listens to available updates
*
* @param swUpdate Service Worker update service
* @param matSnackBar Currently to show that an update is available
*/
public constructor(private swUpdate: SwUpdate, matSnackBar: MatSnackBar, private notify: NotifyService) {
swUpdate.available.subscribe(() => {
// TODO: Find a better solution OR make an update-bar like for history mode
const ref = matSnackBar.open('A new update is available!', 'Refresh', {
duration: 0
});
// Enforces an update
ref.onAction().subscribe(() => {
this.swUpdate.activateUpdate().then(() => {
document.location.reload();
});
});
});
// Listen on requests from other users to check for updates.
this.notify.getMessageObservable(UpdateService.NOTIFY_NAME).subscribe(() => {
this.checkForUpdate();
});
}
/**
* Trigger that to manually check for updates
*/
public checkForUpdate(): void {
if (this.swUpdate.isEnabled) {
this.swUpdate.checkForUpdate();
}
}
/**
* Emits a message to all clients initiating to check for updates. This method
* can only be called by users with 'users.can_manage'. This will be checked by
* the server.
*/
public initiateUpdateCheckForAllClients(): void {
this.notify.sendToAllUsers(UpdateService.NOTIFY_NAME, {});
}
}