Flutter Plugin integration

Assuming flutter application is available

Update pubspec file

Add below snippet into flutter app pubspec.yaml “path” is where plugin is copied after that need to run “flutter pub get”

dependencies:
  flutter:
    sdk: flutter


  korebotplugin:
     # the parent directory to use the current plugin's version.
    path: ../ 

Create a “Method channel” with channel name as below

static const platform = MethodChannel('kore.botsdk/chatbot');

Create a method which invokes the chat window as below here the method name is

“_callNativemethod” can be changed as per requirement.
Future<void> _callNativemethod() async {
  platform.setMethodCallHandler((handler) async {
    if (handler.method == 'Callbacks') {
      // Do your logic here.
        debugPrint("Event from native ${handler.arguments}");
      }
    });
  try {
    final String result = await platform.invokeMethod('getChatWindow');
  } on PlatformException catch (e) {}
}

On button press the above mentioned method can be called to open the chat window as below

 children: [
          ElevatedButton(
            onPressed: _callNativemethod,
            child: const Text('Bot Connect'),
          ),
        ],

All the callbacks from native to the flutter application happens in the below snippet. Users can implement their own logics as per requirement.

platform.setMethodCallHandler((handler) async {
    if (handler.method == 'Callbacks') {
      // Do your logic here.
        debugPrint("Event from native ${handler.arguments}");
      }
    });

Callbacks received are in below json format which can be consumed by the clients and implemented as per requirement.

When fails in fetching jwt token

{"eventCode":"Error_STS","eventMessage":"STS call failed"}

When fails in Socket(Bot) Connection

{"eventCode":"Error_Socket","eventMessage":"Socket connection failed"}

When Bot connected successfully

{"eventCode":"BotConnected","eventMessage":"Bot connected successfully"}

When User clicks the back button on the chat window in IOS or hardware back button in android.

{"eventCode":"BotClosed","eventMessage":"Bot closed by the user"}

For iOS:

Add below lines in AppDelegate.swift

 //Callbacks from chatbotVC
  NotificationCenter.default.removeObserver(self, name: NSNotification.Name(rawValue: "CallbacksNotification"), object: nil)
  NotificationCenter.default.addObserver(self, selector: #selector(self.callbacksMethod), name: 
  NSNotification.Name(rawValue: "CallbacksNotification"), object: nil)

@objc func callbacksMethod(notification:Notification) {
        let dataString: String = notification.object as! String
                if let eventDic = convertStringToDictionary(text: dataString){
            if flutterMethodChannel != nil{
                flutterMethodChannel?.invokeMethod("Callbacks", arguments: eventDic)
            }
        }
    }

  func convertStringToDictionary(text: String) -> [String: Any]? {
      if let data = text.data(using: .utf8) {
          do {
              return try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]
          } catch {
              print(error.localizedDescription)
          }
      }
      return nil
  }