Local notification WORKS

This took two hours to debug, thanks Apple

Author: peterkos

BrickHack-Mobile/AppDelegate.swift

@@ -9,12 +9,12 @@
 import UIKit
 
 @UIApplicationMain
-class AppDelegate: UIResponder, UIApplicationDelegate {
+class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
 
     var window: UIWindow?
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
-        // Override point for customization after application launch.
+        UNUserNotificationCenter.current().delegate = self
         return true
     }
 
@@ -29,28 +29,12 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         return false
     }
 
-    func applicationWillResignActive(_ application: UIApplication) {
-        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
-        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
-    }
+    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
 
-    func applicationDidEnterBackground(_ application: UIApplication) {
-        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
-        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
+        print("WILL PRESENT \(notification)")
+        completionHandler([.alert, .sound])
     }
 
-    func applicationWillEnterForeground(_ application: UIApplication) {
-        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
-    }
-
-    func applicationDidBecomeActive(_ application: UIApplication) {
-        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
-    }
-
-    func applicationWillTerminate(_ application: UIApplication) {
-        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
-    }
 
 
 }
-

BrickHack-Mobile/Controllers/ScheduleTableViewController.swift

@@ -9,8 +9,9 @@
 import UIKit
 import TimelineTableViewCell
 import SwiftMessages
+import UserNotifications
 
-class ScheduleTableViewController: UITableViewController {
+class ScheduleTableViewController: UITableViewController, UNUserNotificationCenterDelegate {
 
     // MARK: Ivars
     var scheduleTimer = Timer()
@@ -166,6 +167,8 @@ class ScheduleTableViewController: UITableViewController {
     }
 
 
+    // MARK: Some helper functions
+
     // Helper function to get a global index for an event from its local table index
     // Section > Row:
     // 0
@@ -233,19 +236,28 @@ class ScheduleTableViewController: UITableViewController {
         // @TODO: Handle updating favorite with server
     }
 
+    // MARK: Notifications
     private func scheduleFavoriteNotification(forEvent timelineEvent: TimelineEvent) {
 
         askForNotificationPermissionIfNeeded()
 
-        // Extract components and set trigger
-        let components = Calendar.current.dateComponents(in: .current, from: timelineEvent.event.time)
-        let trigger = UNCalendarNotificationTrigger(dateMatching: components, repeats: false)
+        // If this looks complicated, see this StackOverflow answer:
+        // https://stackoverflow.com/a/60134234/1431900
+        let now = Date(timeIntervalSinceNow: 0)
+
+        // If event has already occured, silently fail.
+        if (timelineEvent.event.time < now) {
+            return
+        }
 
-        print(timelineEvent.event.uuid)
+        // Otherwise, let's calculate the time until the next event
+        let interval = timelineEvent.event.time.timeIntervalSince(Date(timeIntervalSinceNow: 0))
+        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: interval, repeats: false)
 
         let content = UNMutableNotificationContent()
         content.title = timelineEvent.event.title + " is starting!"
         content.body = timelineEvent.event.description
+        content.sound = .default
         let request = UNNotificationRequest(identifier: timelineEvent.event.uuid, content: content, trigger: trigger)
 
         // Add request to local notification center
@@ -265,12 +277,18 @@ class ScheduleTableViewController: UITableViewController {
     }
 
     private func askForNotificationPermissionIfNeeded() {
+
         UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) { (granted, error) in
-            if !granted {
 
+            print("NOTIF ERROR: \(error)")
+            if !granted {
                 DispatchQueue.main.async {
                     MessageHandler.showNotificationDisabledInfo()
                 }
+            } else {
+                DispatchQueue.main.async {
+                    UIApplication.shared.registerForRemoteNotifications()
+                }
             }
         }
     }
@@ -343,8 +361,6 @@ class ScheduleTableViewController: UITableViewController {
 
                 // Otherwise, go on to configure this current section as "passed"
                 self.timelineEvents.filter({ $0.event.section == sectionIndex }).forEach { timelineEvent in
-
-                    print("updated \(timelineEvent)")
                     timelineEvent.allColor = self.backColor
                 }