Basic Push Notifications Service

[Antonwy]

Push Notification Class

This class should handle everything related to Push Notifications, such as registering device Token, handling background notifications, and generating private & public keys.
Can be accessed as a singleton with PushNotifications.shared.

Crypto Export Manager

CryptoExportManager is a helper class that helps encode public and private keys to be used outside of iOS.
Link: https://github.com/DigitalLeaves/CryptoExportImportManager

Campus Backend

Initialises a gRPC client as a singleton.

Campus Service

• CampusService.pb contains the generated protobuf models and definitions
• CampusService.grpc implements the available API Campus Backend API functions

New AppDelegate

• Implements Push Notification Permission Request
• Implements didFinishLaunch app callback to register device id in the backend
• Implements Background Notification Handler
  

  Campus-iOS/Campus-iOS/AppDelegate.swift

  Lines 44 to 57 in 958344c

  	func application(
  	_ application: UIApplication,
  	didReceiveRemoteNotification userInfo: [AnyHashable : Any],
  	fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void
  	) {
  	Task {
  	do {
  	try await PushNotifications.shared.handleBackgroundNotification(data: userInfo)
  	completionHandler(.noData)
  	} catch {
  	completionHandler(.failed)
  	}
  	}
  	}

New Notification Service

This Service handles the decryption of push notifications before they are displayed to the user.
Requests the private key of the user from the keychain and tries to decrypt the notifications title, subtitle and body,

[philippzagar]

LGTM! Only minor feedback regarding development artifacts, safer and better-structured code