fix (Android) Correctly parse AuthorizationException type other to javascript side (#646)

AuthorizationExceptions from non standard oauth errors for example when the server returns a custom response do not have a exception.getLocalizedMessage() but only put the server response in exeption.error. With this fix, the Error object on the javascript is equal for iOS and Android.

Co-authored-by: Bob Smits <bob.smits@weareyou.com>

Author: bobsmits

android/src/main/java/com/rnappauth/RNAppAuthModule.java

@@ -403,10 +403,10 @@ public void onActivityResult(Activity activity, int requestCode, int resultCode,
             }
 
             final AuthorizationResponse response = AuthorizationResponse.fromIntent(data);
-            AuthorizationException exception = AuthorizationException.fromIntent(data);
-            if (exception != null) {
+            AuthorizationException ex = AuthorizationException.fromIntent(data);
+            if (ex != null) {
                 if (promise != null) {
-                    promise.reject(exception.error != null ? exception.error: "authentication_error", exception.getLocalizedMessage(), exception);
+                    handleAuthorizationException("authentication_error", ex, promise);
                 }
                 return;
             }
@@ -447,7 +447,7 @@ public void onTokenRequestCompleted(
                         }
                     } else {
                         if (promise != null) {
-                            promise.reject(ex.error != null ? ex.error: "token_exchange_failed", ex.getLocalizedMessage(), ex);
+                            handleAuthorizationException("token_exchange_failed", ex, promise);
                         }
                     }
                 }
@@ -514,7 +514,7 @@ public void onRegistrationRequestCompleted(@Nullable RegistrationResponse respon
                     WritableMap map = RegistrationResponseFactory.registrationResponseToMap(response);
                     promise.resolve(map);
                 } else {
-                    promise.reject(ex.error != null ? ex.error: "registration_failed", ex.getLocalizedMessage(), ex);
+                    handleAuthorizationException("registration_failed", ex, promise);
                 }
             }
         };
@@ -652,7 +652,7 @@ public void onTokenRequestCompleted(@Nullable TokenResponse response, @Nullable
                     WritableMap map = TokenResponseFactory.tokenResponseToMap(response);
                     promise.resolve(map);
                 } else {
-                    promise.reject(ex.error != null ? ex.error: "token_refresh_failed", ex.getLocalizedMessage(), ex);
+                    handleAuthorizationException("token_refresh_failed", ex, promise);
                 }
             }
         };
@@ -822,6 +822,14 @@ private AuthorizationServiceConfiguration getServiceConfiguration(@Nullable Stri
         }
     }
 
+    private void handleAuthorizationException(final String fallbackErrorCode, final AuthorizationException ex, final Promise promise) {
+         if (ex.getLocalizedMessage() == null) {
+            promise.reject(fallbackErrorCode, ex.error, ex);
+        } else {
+            promise.reject(ex.error != null ? ex.error: fallbackErrorCode, ex.getLocalizedMessage(), ex);
+        }
+    }
+
     private void setServiceConfiguration(@Nullable String issuer, AuthorizationServiceConfiguration serviceConfiguration) {
         if (issuer != null) {
             mServiceConfigurations.put(issuer, serviceConfiguration);