Media attachments service extension (#198)

* Notification Service Extension is now used instead of content-available on iOS 10 for Action buttons and Media attachments.
* This improves the reliably of and delivery speed of notifications with these features enabled. 
* Added the following selectors that must be used with from your Notification Service Extension.
   + didReceiveNotificatioExtensionnRequest:withMutableNotificationContent:
   + serviceExtensionTimeWillExpireRequest:withMutableNotificationContent:
* Fixed bug where actionID was not being set since release 2.3.6.
* Cleaned up Objective-c example project
* Added additional unit test and fixed flaky tests with Travis-CI
* Fixed crash with action buttons when using the new os_data payload.

Author: jkasten2

OneSignal.podspec

@@ -12,5 +12,5 @@ Pod::Spec.new do |s|
   s.requires_arc = true
 
   s.ios.vendored_frameworks = 'iOS_SDK/Framework/OneSignal.framework'
-  s.framework               = 'SystemConfiguration'
+  s.framework               = 'SystemConfiguration', 'UIKit'
 end

OneSignalExample/OSServiceExtension/Info.plist renamed to OneSignalExample/NotificationServiceExtension/Info.plist

@@ -5,7 +5,7 @@
 	<key>CFBundleDevelopmentRegion</key>
 	<string>en</string>
 	<key>CFBundleDisplayName</key>
-	<string>OSServiceExtension</string>
+	<string>NotificationServiceExtension</string>
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>

OneSignalExample/NotificationServiceExtension/NotificationService.h

@@ -0,0 +1,32 @@
+/**
+ * Modified MIT License
+ *
+ * Copyright 2017 OneSignal
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * 1. The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 2. All copies of substantial portions of the Software may only be used in connection
+ * with services provided by OneSignal.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#import <UserNotifications/UserNotifications.h>
+
+@interface NotificationService : UNNotificationServiceExtension
+
+@end

OneSignalExample/NotificationServiceExtension/NotificationService.m

@@ -0,0 +1,61 @@
+/**
+ * Modified MIT License
+ *
+ * Copyright 2017 OneSignal
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * 1. The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 2. All copies of substantial portions of the Software may only be used in connection
+ * with services provided by OneSignal.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#import <OneSignal/OneSignal.h>
+
+#import "NotificationService.h"
+
+@interface NotificationService ()
+
+@property (nonatomic, strong) void (^contentHandler)(UNNotificationContent *contentToDeliver);
+@property (nonatomic, strong) UNNotificationRequest *recievedRequest;
+@property (nonatomic, strong) UNMutableNotificationContent *bestAttemptContent;
+
+@end
+
+@implementation NotificationService
+
+- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
+    self.recievedRequest = request;
+    self.contentHandler = contentHandler;
+    self.bestAttemptContent = [request.content mutableCopy];
+    
+    [OneSignal didReceiveNotificatioExtensionnRequest:self.recievedRequest withMutableNotificationContent:self.bestAttemptContent];
+    
+    self.contentHandler(self.bestAttemptContent);
+}
+
+- (void)serviceExtensionTimeWillExpire {
+    // Called just before the extension will be terminated by the system.
+    // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
+    
+    [OneSignal serviceExtensionTimeWillExpireRequest:self.recievedRequest withMutableNotificationContent:self.bestAttemptContent];
+    
+    self.contentHandler(self.bestAttemptContent);
+}
+
+@end