Fix RemoteConfig info initialization issues (#1639)

* Fix RemoteConfig info initialization issues

* Update remote_config_android.cc

Author: a-maurice

release_build_files/readme.md

@@ -635,6 +635,8 @@ code.
 -   Changes
     - Messaging: Changed SetListener to send the last token received
       before the listener was set.
+    - Remote Config: Fixed ConfigInfo fields to default to 0 when
+      not throttled or having previous fetch data.
 
 ### 12.2.0
 -   Changes

remote_config/src/android/remote_config_android.cc

@@ -496,8 +496,15 @@ static void JConfigInfoToConfigInfo(JNIEnv* env, jobject jinfo,
                                     ConfigInfo* info) {
   FIREBASE_DEV_ASSERT(env->IsInstanceOf(jinfo, config_info::GetClass()));
 
-  info->fetch_time = env->CallLongMethod(
+  int64_t fetch_time = env->CallLongMethod(
       jinfo, config_info::GetMethodId(config_info::kGetFetchTimeMillis));
+  // The C++ fetch_time is a uint64_t, so if we are given a negative number,
+  // use 0 instead, to prevent getting a very large number.
+  if (fetch_time < 0) {
+    fetch_time = 0;
+  }
+  info->fetch_time = fetch_time;
+  util::CheckAndClearJniExceptions(env);
   int64_t status_code = env->CallIntMethod(
       jinfo, config_info::GetMethodId(config_info::kGetLastFetchStatus));
   switch (status_code) {

remote_config/src/include/firebase/remote_config.h

@@ -94,7 +94,7 @@ struct ConfigUpdate {
 /// Normally returned as a result of the GetInfo() function.
 struct ConfigInfo {
   /// @brief The time (in milliseconds since the epoch) that the last fetch
-  /// operation completed.
+  /// operation completed. 0 if no fetch attempt has been made yet.
   uint64_t fetch_time;
 
   /// @brief The status of the last fetch request.

remote_config/src/ios/remote_config_ios.mm

@@ -52,10 +52,6 @@
 static NSString *true_pattern = @"^(1|true|t|yes|y|on)$";
 static NSString *false_pattern = @"^(0|false|f|no|n|off|)$";
 
-// If a fetch was throttled, this is set to the time when the throttling is
-// finished, in milliseconds since epoch.
-static NSNumber *g_throttled_end_time = @0;
-
 // Saved default keys.
 static std::vector<std::string> *g_default_keys = nullptr;
 
@@ -148,6 +144,11 @@ static void GetInfoFromFIRRemoteConfig(FIRRemoteConfig *rc_instance, ConfigInfo
   FIREBASE_DEV_ASSERT(out_info != nullptr);
   out_info->fetch_time = round(rc_instance.lastFetchTime.timeIntervalSince1970 *
                                ::firebase::internal::kMillisecondsPerSecond);
+  // The C++ throttled_end_time is a uint64_t, so if we are given a negative number,
+  // use 0 instead, to prevent getting a very large number.
+  if (throttled_end_time < 0) {
+    throttled_end_time = 0;
+  }
   out_info->throttled_end_time = throttled_end_time * ::firebase::internal::kMillisecondsPerSecond;
   switch (rc_instance.lastFetchStatus) {
     case FIRRemoteConfigFetchStatusNoFetchYet:
@@ -201,7 +202,7 @@ static ConfigUpdate ConvertConfigUpdateKeys(NSSet<NSString *> *keys) {
 
 namespace internal {
 RemoteConfigInternal::RemoteConfigInternal(const firebase::App &app)
-    : app_(app), future_impl_(kRemoteConfigFnCount) {
+    : app_(app), future_impl_(kRemoteConfigFnCount), throttled_end_time_in_sec_(0) {
   FIRApp *platform_app = app_.GetPlatformApp();
   impl_.reset(new FIRRemoteConfigPointer([FIRRemoteConfig remoteConfigWithApp:platform_app]));
 }