#ifndef RUNNER_FLUTTER_WINDOW_H_
#define RUNNER_FLUTTER_WINDOW_H_


#include <flutter/dart_project.h>
#include <flutter/flutter_view_controller.h>

#include <memory>
#include "flutter/method_channel.h"
#include "flutter/plugin_registrar_windows.h"
#include "flutter/standard_method_codec.h"
#include "win32_window.h"

// A window that does nothing but host a Flutter view.
class FlutterWindow : public Win32Window {
 public:
  // Creates a new FlutterWindow hosting a Flutter view running |project|.
  explicit FlutterWindow(const flutter::DartProject& project);
  virtual ~FlutterWindow();

  auto GetMessenger() -> flutter::BinaryMessenger* {
    return flutter_controller_ ? flutter_controller_->engine()->messenger() : nullptr;
  }

 protected:
  // Win32Window:
  bool OnCreate() override;
  void OnDestroy() override;
  LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam,
                         LPARAM const lparam) noexcept override;

 private:
  // The project to run.
  flutter::DartProject project_;

  // The Flutter instance hosted by this window.
  std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
  std::unique_ptr<flutter::MethodChannel<flutter::EncodableValue>> message_channel_;
  std::unique_ptr<flutter::MethodChannel<flutter::EncodableValue>> registrar_;
  void CreateMessageChannel();
  static void HandleMethodCall(
      const flutter::MethodCall<flutter::EncodableValue>& method_call,
      std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result);
};

#endif  // RUNNER_FLUTTER_WINDOW_H_