Add log to warn users of iOS 7 deprecation. (#527)

* Add log warning users of iOS 7 deprecation.
* Changed "warning" to "notice".
* Removed DEBUG flag

1 files changed, 17 insertions, 0 deletions

diff --git a/Firebase/Core/FIRApp.m b/Firebase/Core/FIRApp.m
index 835a1a4..242fd79 100644
--- a/Firebase/Core/FIRApp.m
+++ b/Firebase/Core/FIRApp.m
@@ -20,6 +20,7 @@
 #import "Private/FIRBundleUtil.h"
 #import "Private/FIRLogger.h"
 #import "Private/FIROptionsInternal.h"
+#import "third_party/FIRAppEnvironmentUtil.h"
 
 NSString *const kFIRServiceAdMob = @"AdMob";
 NSString *const kFIRServiceAuth = @"Auth";
@@ -131,6 +132,22 @@ static FIRApp *sDefaultApp;
       [FIRApp sendNotificationsToSDKs:sDefaultApp];
       sDefaultApp.alreadySentConfigureNotification = YES;
     }
+
+    if (![FIRAppEnvironmentUtil isFromAppStore]) {
+      // Support for iOS 7 has been deprecated, but will continue to function for the time being.
+      // Log a notice for developers who are still targeting iOS 7 as the minimum OS version
+      // supported.
+      dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{
+        NSDictionary<NSString *, id> *info = [[NSBundle mainBundle] infoDictionary];
+
+        NSString *minVersion = info[@"MinimumOSVersion"];
+        if ([minVersion hasPrefix:@"7."]) {
+          FIRLogNotice(kFIRLoggerCore, @"I-COR000026", @"Support for iOS 7 is deprecated and will "
+                       @"stop working in the future. Please upgrade your app to target iOS 8 or "
+                       @"above.");
+        }
+      });
+    }
   }
 }