[iOS] Modify logError() to send stacktrace.js output as an actual sta…

…cktrace instead of custom keys. Relates to #118.

src/ios/FirebasePlugin.m

@@ -540,26 +540,38 @@ - (void)logEvent:(CDVInvokedUrlCommand *)command {
 - (void)logError:(CDVInvokedUrlCommand *)command {
     [self.commandDelegate runInBackground:^{
         NSString* errorMessage = [command.arguments objectAtIndex:0];
-        NSMutableDictionary* userInfo = [[NSMutableDictionary alloc] init];
+
         CDVCommandStatus status = CDVCommandStatus_OK;
-
         @try {
             // We can optionally be passed a stack trace from stackTrace.js which we'll put in userInfo.
             if ([command.arguments count] > 1) {
-                NSArray *stack = [command.arguments objectAtIndex:1];
-                int lineNum = 1;
-                for (NSDictionary *entry in stack) {
-                    NSString *key = [NSString stringWithFormat:@"Stack_line_%02d", lineNum++];
-                    userInfo[key] = entry[@"source"];
+                NSArray* stackFrames = [command.arguments objectAtIndex:1];
+
+                NSString* message = errorMessage;
+                NSString* name = @"Uncaught Javascript exception";
+                NSMutableArray *customFrames = [[NSMutableArray alloc] init];
+
+                for (NSDictionary* stackFrame in stackFrames) {
+                    CLSStackFrame *customFrame = [CLSStackFrame stackFrame];
+                    [customFrame setSymbol:stackFrame[@"functionName"]];
+                    [customFrame setFileName:stackFrame[@"fileName"]];
+                    [customFrame setLibrary:stackFrame[@"source"]];
+                    [customFrame setOffset:(uint64_t) [stackFrame[@"columnNumber"] intValue]];
+                    [customFrame setLineNumber:(uint32_t) [stackFrame[@"lineNumber"] intValue]];
+                    [customFrames addObject:customFrame];
                 }
+                [[Crashlytics sharedInstance] recordCustomExceptionName:name reason:message frameArray:customFrames];
+            }else{
+                //TODO detect and handle non-stack userInfo and pass to recordError
+                NSMutableDictionary* userInfo = [[NSMutableDictionary alloc] init];
+                NSError *error = [NSError errorWithDomain:errorMessage code:0 userInfo:userInfo];
+                [CrashlyticsKit recordError:error];
             }
         } @catch (NSException *exception) {
             CLSNSLog(@"Exception in logError: %@, original error: %@", exception.description, errorMessage);
             status = CDVCommandStatus_ERROR;
         }
-
-        NSError *error = [NSError errorWithDomain:errorMessage code:0 userInfo:userInfo];
-        [CrashlyticsKit recordError:error];
+
         CDVPluginResult *pluginResult = [CDVPluginResult resultWithStatus:status];
         [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
     }];