/**************************************************************************/
/*  os_osx.h                                                              */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
/* "Software"), to deal in the Software without restriction, including    */
/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
/* permit persons to whom the Software is furnished to do so, subject to  */
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/* included in all copies or substantial portions of the Software.        */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
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/**************************************************************************/

#ifndef OS_OSX_H
#define OS_OSX_H

#define BitMap _QDBitMap // Suppress deprecated QuickDraw definition.

#include "core/os/input.h"
#include "crash_handler_osx.h"
#include "drivers/coreaudio/audio_driver_coreaudio.h"
#include "drivers/coremidi/midi_driver_coremidi.h"
#include "drivers/unix/os_unix.h"
#include "joypad_osx.h"
#include "main/input_default.h"
#include "power_osx.h"
#include "servers/audio_server.h"
#include "servers/visual/rasterizer.h"
#include "servers/visual/visual_server_wrap_mt.h"
#include "servers/visual_server.h"

#include <AppKit/AppKit.h>
#include <AppKit/NSCursor.h>
#include <ApplicationServices/ApplicationServices.h>
#include <CoreVideo/CoreVideo.h>

#undef BitMap
#undef CursorShape

class OS_OSX : public OS_Unix {
public:
	struct KeyEvent {
		unsigned int osx_state;
		bool pressed;
		bool echo;
		bool raw;
		uint32_t scancode;
		uint32_t physical_scancode;
		uint32_t unicode;
	};

	struct WarpEvent {
		NSTimeInterval timestamp;
		NSPoint delta;
	};
	List<WarpEvent> warp_events;
	NSTimeInterval last_warp = 0;
	bool ignore_warp = false;

	bool last_pen_inverted = false;

	Vector<KeyEvent> key_event_buffer;
	int key_event_pos;

	bool force_quit;
	bool is_resizing = false;
	//  rasterizer seems to no longer be given to visual server, its using GLES3 directly?
	//Rasterizer *rasterizer;
	VisualServer *visual_server;

	List<String> args;
	MainLoop *main_loop;

#ifdef COREAUDIO_ENABLED
	AudioDriverCoreAudio audio_driver;
#endif
#ifdef COREMIDI_ENABLED
	MIDIDriverCoreMidi midi_driver;
#endif

	InputDefault *input;
	JoypadOSX *joypad_osx;

	/* objc */

	CGEventSourceRef eventSource;

	void process_events();
	void process_key_events();

	void *framework;
	//          pthread_key_t   current;
	bool mouse_grab;
	Point2 mouse_pos;

	id delegate;
	id window_delegate;
	id window_object;
	id window_view;
	id autoreleasePool;
	id cursor;
	NSOpenGLPixelFormat *pixelFormat;
	NSOpenGLContext *context;
	NSOpenGLContext *context_offscreen;

	Vector<Vector2> mpath;
	bool layered_window;

	CursorShape cursor_shape;
	NSCursor *cursors[CURSOR_MAX];
	Map<CursorShape, Vector<Variant>> cursors_cache;
	MouseMode mouse_mode;

	String title;
	bool minimized;
	bool maximized;
	bool zoomed;
	bool resizable;
	bool window_focused;
	bool on_top;
	bool is_visible;

	Size2 window_size;
	Rect2 restore_rect;

	String open_with_filename;

	Point2 im_position;
	bool im_active;
	String im_text;
	Point2 im_selection;

	Size2 min_size;
	Size2 max_size;

	PowerOSX *power_manager;

	id tts = nullptr;

	CrashHandler crash_handler;

	void _update_window();

	int video_driver_index;
	virtual int get_current_video_driver() const;

	struct GlobalMenuItem {
		String label;
		Variant signal;
		Variant meta;

		GlobalMenuItem() {
			//NOP
		}

		GlobalMenuItem(const String &p_label, const Variant &p_signal, const Variant &p_meta) {
			label = p_label;
			signal = p_signal;
			meta = p_meta;
		}
	};

	Map<String, Vector<GlobalMenuItem>> global_menus;
	List<String> global_menus_order;

	void _update_global_menu();

	static void pre_wait_observer_cb(CFRunLoopObserverRef p_observer, CFRunLoopActivity p_activiy, void *p_context);

protected:
	virtual void initialize_core();
	virtual Error initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver);
	virtual void finalize();

	virtual void set_main_loop(MainLoop *p_main_loop);
	virtual void delete_main_loop();

public:
	static OS_OSX *singleton;

	virtual bool tts_is_speaking() const;
	virtual bool tts_is_paused() const;
	virtual Array tts_get_voices() const;

	virtual void tts_speak(const String &p_text, const String &p_voice, int p_volume = 50, float p_pitch = 1.f, float p_rate = 1.f, int p_utterance_id = 0, bool p_interrupt = false);
	virtual void tts_pause();
	virtual void tts_resume();
	virtual void tts_stop();

	void global_menu_add_item(const String &p_menu, const String &p_label, const Variant &p_signal, const Variant &p_meta);
	void global_menu_add_separator(const String &p_menu);
	void global_menu_remove_item(const String &p_menu, int p_idx);
	void global_menu_clear(const String &p_menu);

	void wm_minimized(bool p_minimized);

	virtual String get_name() const;

	virtual void alert(const String &p_alert, const String &p_title = "ALERT!");

	virtual Error open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path = false);

	virtual void set_cursor_shape(CursorShape p_shape);
	virtual CursorShape get_cursor_shape() const;
	virtual void set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot);

	virtual void set_mouse_show(bool p_show);
	virtual void set_mouse_grab(bool p_grab);
	virtual bool is_mouse_grab_enabled() const;
	virtual void warp_mouse_position(const Point2 &p_to);
	virtual Point2 get_mouse_position() const;
	virtual int get_mouse_button_state() const;
	void update_real_mouse_position();
	virtual void set_window_title(const String &p_title);
	virtual void set_window_mouse_passthrough(const PoolVector2Array &p_region);

	virtual Size2 get_window_size() const;
	virtual Size2 get_real_window_size() const;

	virtual void set_native_icon(const String &p_filename);
	virtual void set_icon(const Ref<Image> &p_icon);

	virtual MainLoop *get_main_loop() const;

	virtual String get_config_path() const;
	virtual String get_data_path() const;
	virtual String get_cache_path() const;
	virtual String get_bundle_resource_dir() const;
	virtual String get_bundle_icon_path() const;
	virtual String get_godot_dir_name() const;

	virtual String get_system_dir(SystemDir p_dir, bool p_shared_storage = true) const;

	virtual bool can_draw() const;

	virtual void set_clipboard(const String &p_text);
	virtual String get_clipboard() const;

	virtual void release_rendering_thread();
	virtual void make_rendering_thread();
	virtual void swap_buffers();

	Error shell_open(String p_uri);
	void push_input(const Ref<InputEvent> &p_event);

	String get_locale() const;

	virtual void set_video_mode(const VideoMode &p_video_mode, int p_screen = 0);
	virtual VideoMode get_video_mode(int p_screen = 0) const;
	virtual void get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen = 0) const;

	virtual bool is_offscreen_gl_available() const;
	virtual void set_offscreen_gl_current(bool p_current);

	virtual String get_executable_path() const;
	virtual Error execute(const String &p_path, const List<String> &p_arguments, bool p_blocking = true, ProcessID *r_child_id = nullptr, String *r_pipe = nullptr, int *r_exitcode = nullptr, bool read_stderr = false, Mutex *p_pipe_mutex = nullptr, bool p_open_console = false);

	virtual LatinKeyboardVariant get_latin_keyboard_variant() const;
	virtual int keyboard_get_layout_count() const;
	virtual int keyboard_get_current_layout() const;
	virtual void keyboard_set_current_layout(int p_index);
	virtual String keyboard_get_layout_language(int p_index) const;
	virtual String keyboard_get_layout_name(int p_index) const;
	virtual uint32_t keyboard_get_scancode_from_physical(uint32_t p_scancode) const;

	virtual void move_window_to_foreground();

	virtual int get_screen_count() const;
	virtual int get_current_screen() const;
	virtual void set_current_screen(int p_screen);
	virtual Point2 get_screen_position(int p_screen = -1) const;
	virtual Size2 get_screen_size(int p_screen = -1) const;
	virtual int get_screen_dpi(int p_screen = -1) const;
	virtual float get_screen_scale(int p_screen = -1) const;
	virtual float get_screen_max_scale() const;
	virtual float get_screen_refresh_rate(int p_screen = -1) const;

	virtual Point2 get_window_position() const;
	virtual void set_window_position(const Point2 &p_position);
	virtual Size2 get_max_window_size() const;
	virtual Size2 get_min_window_size() const;
	virtual void set_min_window_size(const Size2 p_size);
	virtual void set_max_window_size(const Size2 p_size);
	virtual void set_window_size(const Size2 p_size);
	virtual void set_window_fullscreen(bool p_enabled);
	virtual bool is_window_fullscreen() const;
	virtual void set_window_resizable(bool p_enabled);
	virtual bool is_window_resizable() const;
	virtual void set_window_minimized(bool p_enabled);
	virtual bool is_window_minimized() const;
	virtual void set_window_maximized(bool p_enabled);
	virtual bool is_window_maximized() const;
	virtual void set_window_always_on_top(bool p_enabled);
	virtual bool is_window_always_on_top() const;
	virtual bool is_window_focused() const;
	virtual void request_attention();
	virtual String get_joy_guid(int p_device) const;

	virtual void set_borderless_window(bool p_borderless);
	virtual bool get_borderless_window();

	virtual bool get_window_per_pixel_transparency_enabled() const;
	virtual void set_window_per_pixel_transparency_enabled(bool p_enabled);

	virtual void set_ime_active(const bool p_active);
	virtual void set_ime_position(const Point2 &p_pos);
	virtual Point2 get_ime_selection() const;
	virtual String get_ime_text() const;

	virtual String get_unique_id() const;
	virtual String get_processor_name() const;

	virtual OS::PowerState get_power_state();
	virtual int get_power_seconds_left();
	virtual int get_power_percent_left();

	virtual bool _check_internal_feature_support(const String &p_feature);

	virtual void _set_use_vsync(bool p_enable);
	//virtual bool is_vsync_enabled() const;

	void run();

	void set_mouse_mode(MouseMode p_mode);
	MouseMode get_mouse_mode() const;

	void disable_crash_handler();
	bool is_disable_crash_handler() const;

	virtual Error move_to_trash(const String &p_path);

	void force_process_input();

	OS_OSX();

private:
	Point2 get_native_screen_position(int p_screen) const;
	Point2 get_native_window_position() const;
	void set_native_window_position(const Point2 &p_position);
	Point2 get_screens_origin() const;
};

#endif // OS_OSX_H
