Now ask for notification permissions

Author: peterkos

BrickHack-Mobile/AlertMessage.swift

@@ -37,7 +37,7 @@ class MessageHandler {
                               iconText: "⚠️")
 
         // Tapping message will hide view
-        view.tapHandler       = { _ in SwiftMessages.hide() }
+        view.tapHandler = { _ in SwiftMessages.hide() }
 
         // Configure view properties
         // @TODO: Add progress bar timer, à-la Discord?
@@ -47,9 +47,7 @@ class MessageHandler {
         config.preferredStatusBarStyle = .lightContent
         config.duration = .automatic
 
-
         SwiftMessages.show(config: config, view: view)
-
     }
 
     static func showConnectionError() {
@@ -131,4 +129,11 @@ class MessageHandler {
                          body: "Please try again later.",
                          type: .error)
     }
+
+    static func showNotificationDisabledInfo() {
+        print("INFO: Notification permissions denied, need to reset in Settings!")
+        showAlertMessage(withTitle: "Notifications are disabled!",
+                         body: "Go to the Settings app to re-enable notifications.",
+                         type: .info)
+    }
 }

BrickHack-Mobile/Controllers/ScheduleTableViewController.swift

@@ -235,21 +235,22 @@ class ScheduleTableViewController: UITableViewController {
 
     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)
 
         print(timelineEvent.event.uuid)
 
-
         let content = UNMutableNotificationContent()
         content.title = timelineEvent.event.title + " is starting!"
         content.body = timelineEvent.event.description
         let request = UNNotificationRequest(identifier: timelineEvent.event.uuid, content: content, trigger: trigger)
 
         // Add request to local notification center
         UNUserNotificationCenter.current().add(request) { error in
-            if let error = error {
+            if error != nil {
                 DispatchQueue.main.async {
                     MessageHandler.showNotificationRegisterError(withEventTitle: timelineEvent.event.title)
                 }
@@ -263,6 +264,17 @@ class ScheduleTableViewController: UITableViewController {
         UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: [identifier])
     }
 
+    private func askForNotificationPermissionIfNeeded() {
+        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) { (granted, error) in
+            if !granted {
+
+                DispatchQueue.main.async {
+                    MessageHandler.showNotificationDisabledInfo()
+                }
+            }
+        }
+    }
+
     // MARK: Section headers and view configuration
 
     override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {