Add OS class

Author: abnegate

src/SDK/Language/Apple.php

@@ -201,6 +201,11 @@ public function getFiles(): array
                 'destination'   => '/Sources/{{ spec.title | caseUcfirst}}/Client.swift',
                 'template'      => '/apple/Sources/Client.swift.twig',
             ],
+            [
+                'scope'         => 'default',
+                'destination'   => '/Sources/{{ spec.title | caseUcfirst}}/OS.swift',
+                'template'      => '/apple/Sources/OS.swift.twig',
+            ],
             [
                 'scope'         => 'default',
                 'destination'   => '/Sources/{{ spec.title | caseUcfirst}}/OAuth/WebAuthComponent.swift',

templates/apple/Sources/OS.swift.twig

@@ -0,0 +1,58 @@
+import Foundation
+import UserNotifications
+
+#if os(iOS) || os(tvOS)
+import UIKit
+public typealias Application = UIApplication
+#elseif os(macOS)
+import AppKit
+public typealias Application = NSApplication
+#elseif os(watchOS)
+import WatchKit
+public typealias Application = WKApplication
+#endif
+
+public enum OSPermission {
+    case notifications
+}
+
+public class OS {
+    public static func requestPermission(
+        _ application: Application,
+        _ permission: OSPermission,
+        onGranted: @escaping () -> Void = {},
+        onDenied: @escaping () -> Void = {}
+    ) {
+        switch(permission) {
+        case .notifications:
+            requestNotificationPermission(
+                application,
+                onGranted: onGranted,
+                onDenied: onDenied
+            )
+        }
+    }
+
+    private static func requestNotificationPermission(
+        _ application: Application,
+        onGranted: @escaping () -> Void = {},
+        onDenied: @escaping () -> Void = {}
+    ) {
+        let options: UNAuthorizationOptions = [.alert, .badge, .sound]
+
+        UNUserNotificationCenter.current().requestAuthorization(
+            options: options,
+            completionHandler: { granted, error in
+                DispatchQueue.main.async {
+                    if (granted) {
+                        onGranted()
+                        application.registerForRemoteNotifications()
+                    }
+                    else {
+                        onDenied()
+                    }
+                }
+            }
+        )
+    }
+}