Add Community Supported tvOS (#590)

Add Community Supported tvOS for Core, Auth, Database and Storage.
Add tvOS unit tests
Add tvOS sample app
Update README.md
Add tvOS to travis testing

10 files changed, 19 insertions, 16 deletions

diff --git a/Firebase/Auth/Source/FIRAuthAPNSTokenManager.m b/Firebase/Auth/Source/FIRAuthAPNSTokenManager.m
index 7775305..215a391 100644
--- a/Firebase/Auth/Source/FIRAuthAPNSTokenManager.m
+++ b/Firebase/Auth/Source/FIRAuthAPNSTokenManager.m
@@ -73,7 +73,9 @@ static const NSTimeInterval kLegacyRegistrationTimeout = 30;
     } else {
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#if TARGET_OS_IOS
       [_application registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert];
+#endif  // TARGET_OS_IOS
 #pragma clang diagnostic pop
     }
   });
diff --git a/Firebase/Core/FIRNetworkURLSession.m b/Firebase/Core/FIRNetworkURLSession.m
index d9c6f3a..c3da674 100644
--- a/Firebase/Core/FIRNetworkURLSession.m
+++ b/Firebase/Core/FIRNetworkURLSession.m
@@ -428,6 +428,7 @@
 - (NSURLSessionConfiguration *)backgroundSessionConfigWithSessionID:(NSString *)sessionID {
 #if (TARGET_OS_OSX && defined(MAC_OS_X_VERSION_10_10) &&         \
      MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_10) || \
+    TARGET_OS_TV ||                                              \
     (TARGET_OS_IOS && defined(__IPHONE_8_0) && __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_8_0)
 
   // iOS 8/10.10 builds require the new backgroundSessionConfiguration method name.
diff --git a/Firebase/Core/FIRReachabilityChecker.m b/Firebase/Core/FIRReachabilityChecker.m
index 733dffe..cac87ff 100644
--- a/Firebase/Core/FIRReachabilityChecker.m
+++ b/Firebase/Core/FIRReachabilityChecker.m
@@ -177,7 +177,7 @@ static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected";
     // Reachable flag is set. Check further flags.
     if (!(flags & kSCNetworkReachabilityFlagsConnectionRequired)) {
 // Connection required flag is not set, so we have connectivity.
-#if TARGET_OS_IOS
+#if TARGET_OS_IOS || TARGET_OS_TV
       status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kFIRReachabilityViaCellular
                                                            : kFIRReachabilityViaWifi;
 #elif TARGET_OS_OSX
@@ -188,7 +188,7 @@ static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected";
                !(flags & kSCNetworkReachabilityFlagsInterventionRequired)) {
 // If the connection on demand or connection on traffic flag is set, and user intervention
 // is not required, we have connectivity.
-#if TARGET_OS_IOS
+#if TARGET_OS_IOS || TARGET_OS_TV
       status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kFIRReachabilityViaCellular
                                                            : kFIRReachabilityViaWifi;
 #elif TARGET_OS_OSX
diff --git a/Firebase/Core/third_party/FIRAppEnvironmentUtil.m b/Firebase/Core/third_party/FIRAppEnvironmentUtil.m
index 859c04e..90e66f0 100644
--- a/Firebase/Core/third_party/FIRAppEnvironmentUtil.m
+++ b/Firebase/Core/third_party/FIRAppEnvironmentUtil.m
@@ -177,7 +177,7 @@ static BOOL isAppEncrypted() {
 }
 
 + (BOOL)hasEmbeddedMobileProvision {
-  #if TARGET_OS_IOS
+  #if TARGET_OS_IOS || TARGET_OS_TV
   return [[NSBundle mainBundle] pathForResource:@"embedded" ofType:@"mobileprovision"].length > 0;
   #elif TARGET_OS_OSX
   return NO;
@@ -185,7 +185,7 @@ static BOOL isAppEncrypted() {
 }
 
 + (BOOL)isSimulator {
-  #if TARGET_OS_IOS
+  #if TARGET_OS_IOS || TARGET_OS_TV
   NSString *platform = [FIRAppEnvironmentUtil deviceModel];
   return [platform isEqual:@"x86_64"] || [platform isEqual:@"i386"];
   #elif TARGET_OS_OSX
@@ -207,7 +207,7 @@ static BOOL isAppEncrypted() {
 }
 
 + (NSString *)systemVersion {
-  #if TARGET_OS_IOS
+  #if TARGET_OS_IOS || TARGET_OS_TV
   return [UIDevice currentDevice].systemVersion;
   #elif TARGET_OS_OSX
   return [NSProcessInfo processInfo].operatingSystemVersionString;
@@ -215,7 +215,7 @@ static BOOL isAppEncrypted() {
 }
 
 + (BOOL)isAppExtension {
-  #if TARGET_OS_IOS
+  #if TARGET_OS_IOS || TARGET_OS_TV
   // Documented by <a href="https://goo.gl/RRB2Up">Apple</a>
   BOOL appExtension = [[[NSBundle mainBundle] bundlePath] hasSuffix:@".appex"];
   return appExtension;
@@ -227,7 +227,7 @@ static BOOL isAppEncrypted() {
 #pragma mark - Helper methods
 
 + (BOOL)hasSCInfoFolder {
-  #if TARGET_OS_IOS
+  #if TARGET_OS_IOS || TARGET_OS_TV
   NSString *bundlePath = [NSBundle mainBundle].bundlePath;
   NSString *scInfoPath = [bundlePath stringByAppendingPathComponent:@"SC_Info"];
   return [[NSFileManager defaultManager] fileExistsAtPath:scInfoPath];
diff --git a/Firebase/Database/Core/FPersistentConnection.m b/Firebase/Database/Core/FPersistentConnection.m
index 6f71d8b..870727c 100644
--- a/Firebase/Database/Core/FPersistentConnection.m
+++ b/Firebase/Database/Core/FPersistentConnection.m
@@ -925,7 +925,7 @@ static void reachabilityCallback(SCNetworkReachabilityRef ref, SCNetworkReachabi
 - (void) sendConnectStats {
     NSMutableDictionary *stats = [NSMutableDictionary dictionary];
 
-    #if TARGET_OS_IOS
+    #if TARGET_OS_IOS || TARGET_OS_TV
     if (self.config.persistenceEnabled) {
         stats[@"persistence.ios.enabled"] = @1;
     }
diff --git a/Firebase/Database/Core/FRepo.m b/Firebase/Database/Core/FRepo.m
index 0935b44..1c4b956 100644
--- a/Firebase/Database/Core/FRepo.m
+++ b/Firebase/Database/Core/FRepo.m
@@ -53,7 +53,7 @@
 #import "FValueEventRegistration.h"
 #import "FEmptyNode.h"
 
-#if TARGET_OS_IOS
+#if TARGET_OS_IOS || TARGET_OS_TV
 #import <UIKit/UIKit.h>
 #endif
 
@@ -546,7 +546,7 @@
         return;
 
     // Targetted compilation is ONLY for testing. UIKit is weak-linked in actual release build.
-    #if TARGET_OS_IOS
+    #if TARGET_OS_IOS || TARGET_OS_TV
     // The idea is to wait until any outstanding sets get written to disk.  Since the sets might still be in our
     // dispatch queue, we wait for the dispatch queue to catch up and for persistence to catch up.
     // This may be undesirable though.  The dispatch queue might just be processing a bunch of incoming data or
diff --git a/Firebase/Database/Persistence/FLevelDBStorageEngine.m b/Firebase/Database/Persistence/FLevelDBStorageEngine.m
index 490fb6c..7de9ebf 100644
--- a/Firebase/Database/Persistence/FLevelDBStorageEngine.m
+++ b/Firebase/Database/Persistence/FLevelDBStorageEngine.m
@@ -211,7 +211,7 @@ static NSString* trackedQueryKeysKey(NSUInteger trackedQueryId, NSString *key) {
 }
 
 + (NSString *) firebaseDir {
-    #if TARGET_OS_IOS
+    #if TARGET_OS_IOS || TARGET_OS_TV
     NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
     NSString *documentsDir = [dirPaths objectAtIndex:0];
     return [documentsDir stringByAppendingPathComponent:@"firebase"];
diff --git a/Firebase/Database/Realtime/FWebSocketConnection.m b/Firebase/Database/Realtime/FWebSocketConnection.m
index 0fd07e5..49d6bd8 100644
--- a/Firebase/Database/Realtime/FWebSocketConnection.m
+++ b/Firebase/Database/Realtime/FWebSocketConnection.m
@@ -25,7 +25,7 @@
 #import "FStringUtilities.h"
 #import "FIRDatabase_Private.h"
 
-#if TARGET_OS_IOS
+#if TARGET_OS_IOS || TARGET_OS_TV
 #import <UIKit/UIKit.h>
 #endif
 
@@ -85,7 +85,7 @@
     BOOL hasUiDeviceClass = NO;
 
     // Targetted compilation is ONLY for testing. UIKit is weak-linked in actual release build.
-    #if TARGET_OS_IOS
+    #if TARGET_OS_IOS || TARGET_OS_TV
     Class uiDeviceClass = NSClassFromString(@"UIDevice");
     if (uiDeviceClass) {
         systemVersion = [uiDeviceClass currentDevice].systemVersion;
diff --git a/Firebase/Database/third_party/SocketRocket/FSRWebSocket.m b/Firebase/Database/third_party/SocketRocket/FSRWebSocket.m
index a2c857b..c80dbb0 100644
--- a/Firebase/Database/third_party/SocketRocket/FSRWebSocket.m
+++ b/Firebase/Database/third_party/SocketRocket/FSRWebSocket.m
@@ -18,7 +18,7 @@
 
 #import "FSRWebSocket.h"
 
-#if TARGET_OS_IOS
+#if TARGET_OS_IOS || TARGET_OS_TV
 #define HAS_ICU
 #endif
 
@@ -28,7 +28,7 @@
 #import <unicode/utf8.h>
 #endif
 
-#if TARGET_OS_IOS
+#if TARGET_OS_IOS || TARGET_OS_TV
 #import <Endian.h>
 #elif TARGET_OS_OSX
 #import <CoreServices/CoreServices.h>
diff --git a/Firebase/Storage/FIRStorageUtils.m b/Firebase/Storage/FIRStorageUtils.m
index 216b4b6..bc517ff 100644
--- a/Firebase/Storage/FIRStorageUtils.m
+++ b/Firebase/Storage/FIRStorageUtils.m
@@ -14,7 +14,7 @@
 
 #import <Foundation/Foundation.h>
 
-#if TARGET_OS_IOS
+#if TARGET_OS_IOS || TARGET_OS_TV
 #import <MobileCoreServices/MobileCoreServices.h>
 #elif TARGET_OS_OSX
 #import <CoreServices/CoreServices.h>