#ifndef settings_h
#define settings_h

#include <gtk/gtk.h>
#include <Core/gb.h>
#include "macros.h"
#include "shader.h"

#define SETTINGS_FILE "sameboy-gtk3-settings.ini"

#define FORMAT_FOR_KEY_TYPE(type) FORMAT_FOR_##type
#define FORMAT_FOR_string "%s"
#define FORMAT_FOR_integer "%d"
#define FORMAT_FOR_boolean "%d"

#define GTYPE_OF_KEY_TYPE(type) GTYPE_OF_##type
#define GTYPE_OF_string gchar *
#define GTYPE_OF_integer gint
#define GTYPE_OF_boolean gboolean

#define GTYPE_IS_POINTER(type) GTYPE_IS_POINTER_##type
#define GTYPE_IS_POINTER_string 1
#define GTYPE_IS_POINTER_integer 0
#define GTYPE_IS_POINTER_boolean 0

// Note: Make sure to use a member name only once for the whole config struct
// 
// Macro usage:
// EXPAND_CONFIG(EXPAND_GROUP(…) EXPAND_GROUP(…) …)
// EXPAND_GROUP(group_name, group_members)
// EXPAND_GROUP_MEMBER(member_name, key_type, default_value)
#define EXPAND_CONFIG \
	EXPAND_GROUP(Emulation, \
		EXPAND_GROUP_MEMBER(boot_rom_path, string, "auto") /* overrides search location for boot ROMs by name */ \
		EXPAND_GROUP_MEMBER(rewind_duration, integer, 10) \
		EXPAND_GROUP_MEMBER(dmg_revision_name, string, "DMG_CPU_C") \
		EXPAND_GROUP_MEMBER(sgb_revision_name, string, "SGB2") \
		EXPAND_GROUP_MEMBER(cgb_revision_name, string, "CPU_CGB_E") \
	) \
	EXPAND_GROUP(Video, \
		EXPAND_GROUP_MEMBER(shader, string, "NearestNeighbor") \
		EXPAND_GROUP_MEMBER(color_correction_id, string, "emulate_hardware") \
		EXPAND_GROUP_MEMBER(frame_blending_mode, string, "disabled") \
		EXPAND_GROUP_MEMBER(display_border_mode, string, "never") \
		EXPAND_GROUP_MEMBER(monochrome_palette_id, string, "greyscale") \
		EXPAND_GROUP_MEMBER(keep_aspect_ratio, boolean, true) \
		EXPAND_GROUP_MEMBER(use_integer_scaling, boolean, true) \
		EXPAND_GROUP_MEMBER(menubar_override, string, "auto") \
	) \
	EXPAND_GROUP(Audio, \
		EXPAND_GROUP_MEMBER(high_pass_filter_id, string, "emulate_hardware") \
		EXPAND_GROUP_MEMBER(sample_rate, integer, -1) \
	) \
	EXPAND_GROUP(Controls, \
		\
	)

typedef struct config_t {
#define EXPAND_GROUP(group_name, members) members
#define EXPAND_GROUP_MEMBER(member, key_type, default_value) GTYPE_OF_KEY_TYPE(key_type) member;
	EXPAND_CONFIG
#undef EXPAND_GROUP
#undef EXPAND_GROUP_MEMBER
} config_t;

enum menubar_type_t {
	MENUBAR_AUTO,
	MENUBAR_SHOW_IN_SHELL,
	MENUBAR_SHOW_IN_WINDOW,
	MENUBAR_SHOW_HAMBURGER
};

gchar* settings_file_path;
GKeyFile *key_file;
config_t config;

void on_preferences_realize(GtkWidget *w, gpointer builder_ptr);

void print_config(config_t *config);
void load_config_from_key_file(config_t *config, GKeyFile *key_file);

void init_settings(gchar *path, GtkWindow *preferences);
int load_settings(void);
void save_settings(void);
void free_settings(void);

void update_boot_rom_selector(GtkBuilder *builder);

enum menubar_type_t get_show_menubar(void);
void set_show_menubar(enum menubar_type_t);

GB_color_correction_mode_t get_color_correction_mode(void);
void set_color_correction_mode(GB_color_correction_mode_t);

GB_frame_blending_mode_t get_frame_blending_mode(void);
void set_frame_blending_mode(GB_frame_blending_mode_t);

GB_border_mode_t get_display_border_mode(void);
void set_display_border_mode(GB_border_mode_t);

GB_highpass_mode_t get_highpass_mode(void);
void set_highpass_mode(GB_highpass_mode_t);

const GB_palette_t* get_monochrome_palette(void);
void set_monochrome_palette(const GB_palette_t*);

GB_model_t get_dmg_model(void);
GB_model_t get_sgb_model(void);
GB_model_t get_cgb_model(void);

#endif /* settings_h */