// Aseprite
// Copyright (C) 2018-2024  Igara Studio S.A.
// Copyright (C) 2001-2018  David Capello
//
// This program is distributed under the terms of
// the End-User License Agreement for Aseprite.

#ifndef APP_APP_H_INCLUDED
#define APP_APP_H_INCLUDED
#pragma once

#include "app/app_brushes.h"
#include "base/paths.h"
#include "doc/pixel_format.h"
#include "obs/signal.h"

#include <memory>
#include <string>
#include <vector>

namespace doc {
class Layer;
}

namespace ui {
class UISystem;
}

namespace app {

#ifdef ENABLE_SCRIPTING
namespace script {
class Engine;
}
#endif

class AppMod;
class AppOptions;
class BackupIndicator;
class Context;
class ContextBar;
class Doc;
class Extensions;
class INotificationDelegate;
class InputChain;
class LegacyModules;
class LoggerModule;
class MainWindow;
class Preferences;
class RecentFiles;
class Timeline;
class Workspace;

namespace crash {
class DataRecovery;
}

namespace tools {
class ActiveToolManager;
class Tool;
class ToolBox;
} // namespace tools

using namespace doc;

class App {
public:
  App(AppMod* mod = nullptr);
  ~App();

  static App* instance() { return m_instance; }

  Context* context();

  // Returns true if Aseprite is running with GUI available.
  bool isGui() const { return m_isGui; }

  // Returns true if the application is running in portable mode.
  bool isPortable();

  // Runs the Aseprite application. In GUI mode it's the top-level
  // window, in console/scripting it just runs the specified
  // scripts.
  int initialize(const AppOptions& options);
  void run();
  void close();

  AppMod* mod() const { return m_mod; }
  tools::ToolBox* toolBox() const;
  tools::Tool* activeTool() const;
  tools::ActiveToolManager* activeToolManager() const;
  RecentFiles* recentFiles() const;
  MainWindow* mainWindow() const { return m_mainWindow.get(); }
  Workspace* workspace() const;
  ContextBar* contextBar() const;
  Timeline* timeline() const;
  Preferences& preferences() const;
  Extensions& extensions() const;
  crash::DataRecovery* dataRecovery() const;

  AppBrushes& brushes()
  {
    ASSERT(m_brushes.get());
    return *m_brushes;
  }

  void showNotification(INotificationDelegate* del);
  void showBackupNotification(bool state);
  void updateDisplayTitleBar();

  InputChain& inputChain();

#ifdef ENABLE_SCRIPTING
  script::Engine* scriptEngine() { return m_engine.get(); }
#endif

  const std::string& memoryDumpFilename() const { return m_memoryDumpFilename; }
  void memoryDumpFilename(const std::string& fn) { m_memoryDumpFilename = fn; }

  // App Signals
  obs::signal<void()> Exit;
  obs::signal<void()> ExitGui;
  obs::signal<void()> PaletteChange;
  obs::signal<void()> ColorSpaceChange;
  obs::signal<void()> PalettePresetsChange;

private:
  class CoreModules;
  class LoadLanguage;
  class Modules;

  static App* m_instance;

  AppMod* m_mod;
  std::unique_ptr<ui::UISystem> m_uiSystem;
  std::unique_ptr<CoreModules> m_coreModules;
  std::unique_ptr<Modules> m_modules;
  std::unique_ptr<LegacyModules> m_legacy;
  bool m_isGui;
  bool m_isShell;
#ifdef ENABLE_STEAM
  bool m_inAppSteam = true;
#endif
  std::unique_ptr<MainWindow> m_mainWindow;
  base::paths m_files;
  std::unique_ptr<AppBrushes> m_brushes;
  std::unique_ptr<BackupIndicator> m_backupIndicator;
#ifdef ENABLE_SCRIPTING
  std::unique_ptr<script::Engine> m_engine;
#endif

  // Set the memory dump filename to show in the Preferences dialog
  // or the "send crash" dialog. It's set by the SendCrash class.
  std::string m_memoryDumpFilename;
};

void app_refresh_screen();
void app_rebuild_documents_tabs();
PixelFormat app_get_current_pixel_format();
int app_get_color_to_clear_layer(doc::Layer* layer);
void app_configure_drm();

} // namespace app

#endif
