#pragma once

#include "StarUniverseServer.hpp"
#include "StarUniverseClient.hpp"
#include "StarWorldPainter.hpp"
#include "StarGameTypes.hpp"
#include "StarMainInterface.hpp"
#include "StarMainMixer.hpp"
#include "StarTitleScreen.hpp"
#include "StarErrorScreen.hpp"
#include "StarCinematic.hpp"
#include "StarKeyBindings.hpp"
#include "StarMainApplication.hpp"

namespace Star {

STAR_CLASS(Input);
STAR_CLASS(Voice);

class ClientApplication : public Application {
protected:
  virtual void startup(StringList const& cmdLineArgs) override;
  virtual void shutdown() override;

  virtual void applicationInit(ApplicationControllerPtr appController) override;
  virtual void renderInit(RendererPtr renderer) override;

  virtual void windowChanged(WindowMode windowMode, Vec2U screenSize) override;

  virtual void processInput(InputEvent const& event) override;

  virtual void update() override;
  virtual void render() override;

  virtual void getAudioData(int16_t* stream, size_t len) override;

private:
  enum class MainAppState {
    Quit,
    Startup,
    Mods,
    ModsWarning,
    Splash,
    Error,
    Title,
    SinglePlayer,
    MultiPlayer
  };

  struct PendingMultiPlayerConnection {
    Variant<P2PNetworkingPeerId, HostAddressWithPort> server;
    String account;
    String password;
  };
  
  struct PostProcessLayer {
    List<String> effects;
    unsigned passes;
  };

  void renderReload();

  void changeState(MainAppState newState);
  void setError(String const& error);
  void setError(String const& error, std::exception const& e);

  void updateMods(float dt);
  void updateModsWarning(float dt);
  void updateSplash(float dt);
  void updateError(float dt);
  void updateTitle(float dt);
  void updateRunning(float dt);

  bool isActionTaken(InterfaceAction action) const;
  bool isActionTakenEdge(InterfaceAction action) const;

  void updateCamera(float dt);

  RootUPtr m_root;
  ThreadFunction<void> m_rootLoader;
  CallbackListenerPtr m_reloadListener;

  MainAppState m_state = MainAppState::Startup;

  // Valid after applicationInit is called
  MainMixerPtr m_mainMixer;
  GuiContextPtr m_guiContext;
  InputPtr m_input;
  VoicePtr m_voice;

  // Valid after renderInit is called the first time
  CinematicPtr m_cinematicOverlay;
  ErrorScreenPtr m_errorScreen;

  // Valid if main app state >= Title
  PlayerStoragePtr m_playerStorage;
  StatisticsPtr m_statistics;
  UniverseClientPtr m_universeClient;
  TitleScreenPtr m_titleScreen;

  // Valid if main app state > Title
  PlayerPtr m_player;
  WorldPainterPtr m_worldPainter;
  WorldRenderData m_renderData;
  MainInterfacePtr m_mainInterface;
  
  List<PostProcessLayer> m_postProcessLayers;

  // Valid if main app state == SinglePlayer
  UniverseServerPtr m_universeServer;

  float m_cameraXOffset = 0.0f;
  float m_cameraYOffset = 0.0f;
  bool m_snapBackCameraOffset = false;
  int m_cameraOffsetDownTicks = 0;
  Vec2F m_cameraPositionSmoother;
  Vec2F m_cameraSmoothDelta;
  int m_cameraZoomDirection = 0;

  int m_minInterfaceScale = 2;
  int m_maxInterfaceScale = 3;
  Vec2F m_crossoverRes;

  Vec2F m_controllerLeftStick;
  Vec2F m_controllerRightStick;
  List<KeyDownEvent> m_heldKeyEvents;
  List<KeyDownEvent> m_edgeKeyEvents;

  Maybe<PendingMultiPlayerConnection> m_pendingMultiPlayerConnection;
  Maybe<HostAddressWithPort> m_currentRemoteJoin;
  int64_t m_timeSinceJoin = 0;
};

}