/*****************************************************************************
 * Copyright (c) 2014 Ted John
 * OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
 *
 * This file is part of OpenRCT2.
 *
 * OpenRCT2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *****************************************************************************/

#ifndef _PLATFORM_H_
#define _PLATFORM_H_

#include "../common.h"

#ifdef __WINDOWS__
#define HAVE_MATH_H
#endif // __WINDOWS__

#include <SDL.h>

#include "../core/textinputbuffer.h"
#include "../drawing/font.h"

#ifndef MAX_PATH
#define MAX_PATH 260
#endif

#ifdef __MACOSX__
#define KEYBOARD_PRIMARY_MODIFIER KMOD_GUI
#else
#define KEYBOARD_PRIMARY_MODIFIER KMOD_CTRL
#endif

#define INVALID_HANDLE -1

#define TOUCH_DOUBLE_TIMEOUT 300

typedef struct {
	int width, height;
} resolution;

typedef struct {
	const char *path;
	uint64 size;
	uint64 last_modified;
} file_info;

typedef struct {
	sint16 day;
	sint16 month;
	sint16 year;
	sint16 day_of_week;
} rct2_date;

typedef struct {
	sint16 hour;
	sint16 minute;
	sint16 second;
} rct2_time;

typedef struct {
	int x, y;
	unsigned char left, middle, right, any;
	int wheel;
	int old;
	bool touch, touchIsDouble;
	unsigned int touchDownTimestamp;
} openrct2_cursor;

enum {
	CURSOR_UP = 0,
	CURSOR_DOWN = 1,
	CURSOR_CHANGED = 2,
	CURSOR_RELEASED = CURSOR_UP | CURSOR_CHANGED,
	CURSOR_PRESSED = CURSOR_DOWN | CURSOR_CHANGED,
};

typedef enum {FD_OPEN, FD_SAVE} filedialog_type;

typedef struct {
	uint8 type;
	const utf8 *title;
	const utf8 *initial_directory;
	const utf8 *default_filename;
	struct {
		const utf8 *name;			// E.g. "Image Files"
		const utf8 *pattern;		// E.g. "*.png;*.jpg;*.gif"
	} filters[8];
} file_dialog_desc;

extern openrct2_cursor gCursorState;
extern const unsigned char *gKeysState;
extern unsigned char *gKeysPressed;
extern unsigned int gLastKeyPressed;

extern textinputbuffer gTextInput;
extern bool gTextInputCompositionActive;
extern utf8 gTextInputComposition[32];
extern int gTextInputCompositionStart;
extern int gTextInputCompositionLength;

extern int gResolutionsAllowAnyAspectRatio;
extern int gNumResolutions;
extern resolution *gResolutions;
extern SDL_Window *gWindow;

extern SDL_Color gPalette[256];

extern bool gHardwareDisplay;

extern bool gSteamOverlayActive;

// Platform shared definitions
void platform_update_fullscreen_resolutions();
void platform_get_closest_resolution(int inWidth, int inHeight, int *outWidth, int *outHeight);
void platform_init();
void platform_draw();
void platform_free();
void platform_trigger_resize();
void platform_update_palette(const uint8 *colours, int start_index, int num_colours);
void platform_set_fullscreen_mode(int mode);
void platform_set_cursor(uint8 cursor);
void platform_refresh_video();
void platform_process_messages();
int platform_scancode_to_rct_keycode(int sdl_key);
void platform_start_text_input(utf8 *buffer, int max_length);
void platform_stop_text_input();
void platform_get_date(rct2_date *out_date);
void platform_get_time(rct2_time *out_time);

// Platform specific definitions
void platform_get_exe_path(utf8 *outPath);
const char *platform_get_new_line();
char platform_get_path_separator();
bool platform_file_exists(const utf8 *path);
bool platform_directory_exists(const utf8 *path);
bool platform_original_game_data_exists(const utf8 *path);
time_t platform_file_get_modified_time(const utf8* path);
bool platform_ensure_directory_exists(const utf8 *path);
bool platform_directory_delete(const utf8 *path);
bool platform_lock_single_instance();
int platform_enumerate_files_begin(const utf8 *pattern);
bool platform_enumerate_files_next(int handle, file_info *outFileInfo);
void platform_enumerate_files_end(int handle);
int platform_enumerate_directories_begin(const utf8 *directory);
bool platform_enumerate_directories_next(int handle, utf8 *path);
void platform_enumerate_directories_end(int handle);

// Returns the bitmask of the GetLogicalDrives function for windows, 0 for other systems
int platform_get_drives();

bool platform_file_copy(const utf8 *srcPath, const utf8 *dstPath, bool overwrite);
bool platform_file_move(const utf8 *srcPath, const utf8 *dstPath);
bool platform_file_delete(const utf8 *path);
void platform_hide_cursor();
void platform_show_cursor();
void platform_get_cursor_position(int *x, int *y);
void platform_set_cursor_position(int x, int y);
unsigned int platform_get_ticks();
void platform_resolve_user_data_path();
void platform_resolve_openrct_data_path();
void platform_get_openrct_data_path(utf8 *outPath);
void platform_get_user_directory(utf8 *outPath, const utf8 *subDirectory);
utf8* platform_get_username();
void platform_show_messagebox(utf8 *message);
bool platform_open_common_file_dialog(utf8 *outFilename, file_dialog_desc *desc);
utf8 *platform_open_directory_browser(utf8 *title);
uint8 platform_get_locale_currency();
uint8 platform_get_currency_value(const char *currencyCode);
uint16 platform_get_locale_language();
uint8 platform_get_locale_measurement_format();
uint8 platform_get_locale_temperature_format();
bool platform_get_font_path(TTFFontDescriptor *font, utf8 *buffer);

bool platform_check_steam_overlay_attached();

datetime64 platform_get_datetime_now_utc();

// Windows specific definitions
#ifdef __WINDOWS__
	#ifndef WIN32_LEAN_AND_MEAN
		#define WIN32_LEAN_AND_MEAN
	#endif
	#include <windows.h>

	int windows_get_registry_install_info(rct2_install_info *installInfo, char *source, char *font, uint8 charset);
	HWND windows_get_window_handle();
#endif // __WINDOWS__

#endif