chore: [SDK-5307] remove stale compatibility code for iOS below 15

iOS_SDK/OneSignalDevApp/OneSignalDevApp/AppDelegate.m

@@ -237,13 +237,9 @@ - (void)userNotificationCenter:(UNUserNotificationCenter *)center
         willPresentNotificationWithPayload:notification.request.content.userInfo
         completion:^(OSNotification *notif) {
             if (notif) {
-                if (@available(iOS 14.0, *)) {
-                    completionHandler(UNNotificationPresentationOptionBanner |
-                                      UNNotificationPresentationOptionList |
-                                      UNNotificationPresentationOptionSound);
-                } else {
-                    completionHandler(UNNotificationPresentationOptionAlert | UNNotificationPresentationOptionSound);
-                }
+                completionHandler(UNNotificationPresentationOptionBanner |
+                                  UNNotificationPresentationOptionList |
+                                  UNNotificationPresentationOptionSound);
             } else {
                 completionHandler(UNNotificationPresentationOptionNone);
             }

iOS_SDK/OneSignalDevApp/OneSignalDevApp/LiveActivityController.swift

@@ -81,7 +81,6 @@ class LiveActivityController: NSObject {
       An example of starting a Live Activity whose attributes are "OneSignal SDK aware". The SDK will handle listening for update tokens on behalf of the app.
       */
      static var counter1 = 0
-     @available(iOS 13.0, *)
      @objc
      static func createOneSignalAwareActivity(activityId: String) {
          if #available(iOS 16.1, *) {
@@ -103,7 +102,6 @@ class LiveActivityController: NSObject {
     /**
      An example of starting a Live Activity using the DefaultLiveActivityAttributes.  The SDK will handle listening for update tokens on behalf of the app.
      */
-    @available(iOS 13.0, *)
     @objc
     static func createDefaultActivity(activityId: String) {
         if #available(iOS 16.1, *) {
@@ -118,7 +116,6 @@ class LiveActivityController: NSObject {
      An example of starting a Live Activity whose attributes are **not** "OneSignal SDK aware".  The app must handle listening for update tokens and notify the OneSignal SDK.
      */
     static var counter2 = 0
-    @available(iOS 13.0, *)
     @objc
     static func createActivity(activityId: String) async {
         if #available(iOS 16.1, *) {

iOS_SDK/OneSignalDevApp/OneSignalDevApp/ViewController.m

@@ -238,19 +238,15 @@ - (IBAction)sendUniqueOutcomeEvent:(id)sender {
 - (IBAction)startAndEnterLiveActivity:(id)sender {
 #if TARGET_OS_MACCATALYST
 #else
-    if (@available(iOS 13.0, *)) {
-        NSString *activityId = [self.activityId text];
-        // Will not make a live activity if activityId is empty
-        if (activityId && activityId.length) {
-            // 1. Create a Default activity
-            // [LiveActivityController createDefaultActivityWithActivityId:activityId ];
-            // 2. Create non-OneSignal-aware activity
-            // [LiveActivityController createActivityWithActivityId:activityId completionHandler:^(void) {} ];
-            // 3. Create OneSignal-aware activity
-            [LiveActivityController createOneSignalAwareActivityWithActivityId:activityId];
-        }
-    } else {
-        NSLog(@"Must use iOS 13 or later for swift concurrency which is required for [LiveActivityController createActivityWithCompletionHandler...");
+    NSString *activityId = [self.activityId text];
+    // Will not make a live activity if activityId is empty
+    if (activityId && activityId.length) {
+        // 1. Create a Default activity
+        // [LiveActivityController createDefaultActivityWithActivityId:activityId ];
+        // 2. Create non-OneSignal-aware activity
+        // [LiveActivityController createActivityWithActivityId:activityId completionHandler:^(void) {} ];
+        // 3. Create OneSignal-aware activity
+        [LiveActivityController createOneSignalAwareActivityWithActivityId:activityId];
     }
 #endif
 }

iOS_SDK/OneSignalSDK/OneSignalCore/Source/OSBundleUtils.m

@@ -25,10 +25,7 @@ of this software and associated documentation files (the "Software"), to deal
 @implementation OSBundleUtils
 
 + (BOOL)isAppUsingUIScene {
-    if (@available(iOS 13.0, *)) {
-        return [[NSBundle mainBundle] objectForInfoDictionaryKey:@"UIApplicationSceneManifest"] != nil;
-    }
-    return NO;
+    return [[NSBundle mainBundle] objectForInfoDictionaryKey:@"UIApplicationSceneManifest"] != nil;
 }
 
 @end

iOS_SDK/OneSignalSDK/OneSignalCoreMocks/OneSignalCoreMocks.swift

@@ -71,10 +71,8 @@ public class OneSignalCoreMocks: NSObject {
 
     @objc public static func backgroundApp() {
         if OSBundleUtils.isAppUsingUIScene() {
-            if #available(iOS 13.0, *) {
-                NotificationCenter.default.post(name: UIScene.willDeactivateNotification, object: nil)
-                NotificationCenter.default.post(name: UIScene.didEnterBackgroundNotification, object: nil)
-            }
+            NotificationCenter.default.post(name: UIScene.willDeactivateNotification, object: nil)
+            NotificationCenter.default.post(name: UIScene.didEnterBackgroundNotification, object: nil)
         } else {
             NotificationCenter.default.post(name: UIApplication.willResignActiveNotification, object: nil)
             NotificationCenter.default.post(name: UIApplication.didEnterBackgroundNotification, object: nil)
@@ -83,10 +81,8 @@ public class OneSignalCoreMocks: NSObject {
 
     @objc public static func foregroundApp() {
         if OSBundleUtils.isAppUsingUIScene() {
-            if #available(iOS 13.0, *) {
-                NotificationCenter.default.post(name: UIScene.willEnterForegroundNotification, object: nil)
-                NotificationCenter.default.post(name: UIScene.didActivateNotification, object: nil)
-            }
+            NotificationCenter.default.post(name: UIScene.willEnterForegroundNotification, object: nil)
+            NotificationCenter.default.post(name: UIScene.didActivateNotification, object: nil)
         } else {
             NotificationCenter.default.post(name: UIApplication.willEnterForegroundNotification, object: nil)
             NotificationCenter.default.post(name: UIApplication.didBecomeActiveNotification, object: nil)
@@ -95,19 +91,15 @@ public class OneSignalCoreMocks: NSObject {
 
     @objc public static func resignActive() {
         if OSBundleUtils.isAppUsingUIScene() {
-            if #available(iOS 13.0, *) {
-                NotificationCenter.default.post(name: UIScene.willDeactivateNotification, object: nil)
-            }
+            NotificationCenter.default.post(name: UIScene.willDeactivateNotification, object: nil)
         } else {
             NotificationCenter.default.post(name: UIApplication.willResignActiveNotification, object: nil)
         }
     }
 
     @objc public static func becomeActive() {
         if OSBundleUtils.isAppUsingUIScene() {
-            if #available(iOS 13.0, *) {
-                NotificationCenter.default.post(name: UIScene.didActivateNotification, object: nil)
-            }
+            NotificationCenter.default.post(name: UIScene.didActivateNotification, object: nil)
         } else {
             NotificationCenter.default.post(name: UIApplication.didBecomeActiveNotification, object: nil)
         }

iOS_SDK/OneSignalSDK/OneSignalExtension/OneSignalAttachmentHandler.m

@@ -47,33 +47,8 @@ @implementation DirectDownloadDelegate
 @synthesize error, response, done;
 
 -(void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveData:(NSData *)data {
-    NSError * __autoreleasing fileHandleError;
-    NSError * __autoreleasing *fileHandleErrorPointer = &fileHandleError;
-    if (@available(iOS 13.0, *)) {
-        // We need to use NSInvocation for reflection because performSelector cannot take pointer parameters
-        SEL writeDataSelector = NSSelectorFromString(@"writeData:error:");
-        NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[NSFileHandle instanceMethodSignatureForSelector:writeDataSelector]];
-        [invocation setTarget:outputHandle];
-        [invocation setSelector:writeDataSelector];
-        /*
-         From Apple's Documentation on NSInvocation:
-         Indices 0 and 1 indicate the hidden arguments self and _cmd, respectively;
-         you should set these values directly with the target and selector properties.
-         Use indices 2 and greater for the arguments normally passed in a message.
-        */
-        [invocation setArgument:&data atIndex:2];
-        [invocation setArgument:&fileHandleErrorPointer atIndex:3];
-        [invocation invoke];
-    } else {
-        @try {
-            [outputHandle writeData:data];
-        } @catch (NSException *e) {
-            NSDictionary *userInfo = @{
-                NSLocalizedDescriptionKey : @"Failed to write attachment data to filehandle",
-            };
-            fileHandleError = [NSError errorWithDomain:@"com.onesignal.download" code:0 userInfo:userInfo];
-        }
-    }
+    NSError *fileHandleError;
+    [outputHandle writeData:data error:&fileHandleError];
 
     if (fileHandleError != nil) {
         [OneSignalLog onesignalLog:ONE_S_LL_ERROR message:[NSString stringWithFormat:@"OneSignal Error encountered while downloading attachment: %@", fileHandleError]];
@@ -265,46 +240,16 @@ + (void)addAttachments:(OSNotification*)notification
 + (UNNotificationAction *)createActionForButton:(NSDictionary *)button {
     NSString *buttonId = button[@"id"];
     NSString *buttonText = button[@"text"];
-
-    if (@available(iOS 15.0, *)) {
-        // Using reflection for Xcode versions lower than 13
-        id icon; // UNNotificationActionIcon
-        let UNNotificationActionIconClass = NSClassFromString(@"UNNotificationActionIcon");
-        if (UNNotificationActionIconClass) {
-            if (button[@"systemIcon"]) {
-                icon = [UNNotificationActionIconClass performSelector:@selector(iconWithSystemImageName:)
-                                                           withObject:button[@"systemIcon"]];
-            } else if (button[@"templateIcon"]) {
-                icon = [UNNotificationActionIconClass performSelector:@selector(iconWithTemplateImageName:)
-                                                           withObject:button[@"templateIcon"]];
-            }
-        }
-
-        // We need to use NSInvocation because performSelector only allows up to 2 arguments
-        SEL actionSelector = NSSelectorFromString(@"actionWithIdentifier:title:options:icon:");
-        UNNotificationAction * __unsafe_unretained action;
-        NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UNNotificationAction methodSignatureForSelector:actionSelector]];
-        [invocation setTarget:[UNNotificationAction class]];
-        [invocation setSelector:actionSelector];
-        /*
-         From Apple's Documentation on NSInvocation:
-         Indices 0 and 1 indicate the hidden arguments self and _cmd, respectively;
-         you should set these values directly with the target and selector properties.
-         Use indices 2 and greater for the arguments normally passed in a message.
-        */
-        NSUInteger actionOption = UNNotificationActionOptionForeground;
-        [invocation setArgument:&buttonId atIndex:2];
-        [invocation setArgument:&buttonText atIndex:3];
-        [invocation setArgument:&actionOption atIndex:4];
-        [invocation setArgument:&icon atIndex:5];
-        [invocation invoke];
-        [invocation getReturnValue:&action];
-        return action;
-    } else {
-        return [UNNotificationAction actionWithIdentifier:buttonId
-                                                    title:buttonText
-                                                  options:UNNotificationActionOptionForeground];
+    UNNotificationActionIcon *icon;
+    if (button[@"systemIcon"]) {
+        icon = [UNNotificationActionIcon iconWithSystemImageName:button[@"systemIcon"]];
+    } else if (button[@"templateIcon"]) {
+        icon = [UNNotificationActionIcon iconWithTemplateImageName:button[@"templateIcon"]];
     }
+    return [UNNotificationAction actionWithIdentifier:buttonId
+                                                title:buttonText
+                                              options:UNNotificationActionOptionForeground
+                                                 icon:icon];
 }
 
 /*

iOS_SDK/OneSignalSDK/OneSignalInAppMessages/Controller/OSMessagingController.m

@@ -1173,13 +1173,7 @@ - (void)webViewContentFinishedLoading:(OSInAppMessageInternal *)message {
 // Required to display if the app is using a Scene
 // See https://github.com/OneSignal/OneSignal-iOS-SDK/issues/648
 - (void)addKeySceneToWindow:(UIWindow*)window {
-    if (@available(iOS 13.0, *)) {
-        // The below lines can be replace with this single line once Xcode 10 support is dropped
-        // window.windowScene = UIApplication.sharedApplication.keyWindow.windowScene;
-        UIWindow *keyWindow = UIApplication.sharedApplication.keyWindow;
-        id windowScene = [keyWindow performSelector:@selector(windowScene)];
-        [window performSelector:@selector(setWindowScene:) withObject:windowScene];
-    }
+    window.windowScene = UIApplication.sharedApplication.keyWindow.windowScene;
 }
 
 - (void)dynamicTriggerCompleted:(NSString *)triggerId {

iOS_SDK/OneSignalSDK/OneSignalInAppMessages/UIApplication+OneSignal.m

@@ -33,13 +33,8 @@ @implementation UIApplication (OneSignal)
 
 + (BOOL)applicationIsActive {
     if ([OSBundleUtils isAppUsingUIScene] && [NSThread isMainThread]) {
-        if (@available(iOS 13.0, *)) {
-            UIWindow *keyWindow = UIApplication.sharedApplication.keyWindow;
-            id windowScene = [keyWindow performSelector:@selector(windowScene)];
-            id session = [windowScene performSelector:@selector(session)];
-            id scene = [session performSelector:@selector(scene)];
-            return [scene performSelector:@selector(activationState)] == 0;
-        }
+        UIWindow *keyWindow = UIApplication.sharedApplication.keyWindow;
+        return keyWindow.windowScene.activationState == UISceneActivationStateForegroundActive;
     }
     return [[UIApplication sharedApplication] applicationState] == UIApplicationStateActive;
 }

iOS_SDK/OneSignalSDK/OneSignalNotifications/NotificationSettings/OneSignalNotificationSettings.m

@@ -74,12 +74,8 @@ - (void)getNotificationPermissionState:(void (^)(OSPermissionStateInternal *subs
             status.answeredPrompt = settings.authorizationStatus != UNAuthorizationStatusNotDetermined && settings.authorizationStatus != provisionalStatus;
             status.provisional = (settings.authorizationStatus == 3);
             status.accepted = settings.authorizationStatus == UNAuthorizationStatusAuthorized && !status.provisional;
-            if (@available(iOS 14.0, *)) {
-                status.ephemeral = (settings.authorizationStatus == AUTH_STATUS_EPHEMERAL);
-                status.accepted = status.accepted || status.ephemeral;
-            } else {
-                status.ephemeral = false;
-            }
+            status.ephemeral = (settings.authorizationStatus == AUTH_STATUS_EPHEMERAL);
+            status.accepted = status.accepted || status.ephemeral;
 
             status.notificationTypes = (settings.badgeSetting == UNNotificationSettingEnabled ? 1 : 0)
                                      + (settings.soundSetting == UNNotificationSettingEnabled ? 2 : 0)

iOS_SDK/OneSignalSDK/OneSignalNotifications/OSNotificationsManager.m

@@ -264,10 +264,8 @@ + (void)registerLifecycleObserver {
 }
 
 + (void)registerLifecycleObserverAsUIScene {
-    if (@available(iOS 13.0, *)) {
-        [OneSignalLog onesignalLog:ONE_S_LL_VERBOSE message:@"OSNotificationManager registering for Scene Lifecycle notifications"];
-        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterForeground) name:@"UISceneWillEnterForegroundNotification" object:nil];
-    }
+    [OneSignalLog onesignalLog:ONE_S_LL_VERBOSE message:@"OSNotificationManager registering for Scene Lifecycle notifications"];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterForeground) name:UISceneWillEnterForegroundNotification object:nil];
 }
 
 + (void)registerLifecycleObserverAsUIApplication {

iOS_SDK/OneSignalSDK/Source/OSRemoteLoggingController.swift

@@ -261,9 +261,9 @@ final class OSRemoteLoggingController: NSObject, OSInternalLogSink {
 private extension OSRemoteLoggingController {
     func registerLifecycleObservers() {
         if usesScenes() {
-            observe(Notification.Name("UISceneDidActivateNotification"), appState: "foreground")
-            observe(Notification.Name("UISceneWillDeactivateNotification"), appState: "unknown")
-            observe(Notification.Name("UISceneDidEnterBackgroundNotification"), appState: "background", flush: true)
+            observe(UIScene.didActivateNotification, appState: "foreground")
+            observe(UIScene.willDeactivateNotification, appState: "unknown")
+            observe(UIScene.didEnterBackgroundNotification, appState: "background", flush: true)
         } else {
             observe(UIApplication.didBecomeActiveNotification, appState: "foreground")
             observe(UIApplication.willResignActiveNotification, appState: "unknown")

iOS_SDK/OneSignalSDK/Source/OneSignalLifecycleObserver.m

@@ -58,12 +58,10 @@ + (void)registerLifecycleObserver {
 }
 
 + (void)registerLifecycleObserverAsUIScene {
-    if (@available(iOS 13.0, *)) {
-        [OneSignalLog onesignalLog:ONE_S_LL_VERBOSE message:@"registering for Scene Lifecycle notifications"];
-        [[NSNotificationCenter defaultCenter] addObserver:[OneSignalLifecycleObserver sharedInstance] selector:@selector(didEnterBackground) name:@"UISceneDidEnterBackgroundNotification" object:nil];
-        [[NSNotificationCenter defaultCenter] addObserver:[OneSignalLifecycleObserver sharedInstance] selector:@selector(didBecomeActive) name:@"UISceneDidActivateNotification" object:nil];
-        [[NSNotificationCenter defaultCenter] addObserver:[OneSignalLifecycleObserver sharedInstance] selector:@selector(willResignActive) name:@"UISceneWillDeactivateNotification" object:nil];
-    }
+    [OneSignalLog onesignalLog:ONE_S_LL_VERBOSE message:@"registering for Scene Lifecycle notifications"];
+    [[NSNotificationCenter defaultCenter] addObserver:[OneSignalLifecycleObserver sharedInstance] selector:@selector(didEnterBackground) name:UISceneDidEnterBackgroundNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:[OneSignalLifecycleObserver sharedInstance] selector:@selector(didBecomeActive) name:UISceneDidActivateNotification object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:[OneSignalLifecycleObserver sharedInstance] selector:@selector(willResignActive) name:UISceneWillDeactivateNotification object:nil];
 }
 
 + (void)registerLifecycleObserverAsUIApplication {