#include "main_window.h"
#include <Core/gb.h>

#include "gb_screen.h"
#include "main_menu.h"
#include "console_window.h"
#include "printer_window.h"
#include "preferences_window.h"
#include "vram_viewer_window.h"

struct _MainWindow {
	GtkApplicationWindowClass parent_class;

	// Child nodes
	GtkBox *container;
	GbScreen *screen;
	bool force_software_renderer;
	MainMenu *main_menu;

	// The local SameBoy core instance
	GB_gameboy_t *gb;

	// Local sub-windows
	ConsoleWindow *console;
	GtkWindow *memory_viewer; // TODO
	PrinterWindow *printer;
	VramViewerWindow *vram_viewer;
};

G_DEFINE_TYPE(MainWindow, main_window, GTK_TYPE_APPLICATION_WINDOW);

typedef enum {
	PROP_FORCE_SOFTWARE_RENDERER = 1,

	N_PROPERTIES
} MainWindowProperty;

static GParamSpec *obj_properties[N_PROPERTIES] = { NULL, };

static void main_window_set_property(GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) {
	MainWindow *self = (MainWindow *) object;

	switch ((MainWindowProperty) property_id) {
		case PROP_FORCE_SOFTWARE_RENDERER: self->force_software_renderer = g_value_get_boolean(value); break;
		default: G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
	}
}

static void main_window_get_property(GObject *object, guint property_id, GValue *value, GParamSpec *pspec) {
	MainWindow *self = (MainWindow *) object;

	switch ((MainWindowProperty) property_id) {
		case PROP_FORCE_SOFTWARE_RENDERER: g_value_set_boolean(value, self->force_software_renderer); break;
		default: G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
	}
}

static void on_update_color_correction(PreferencesWindow *pref, const GB_color_correction_mode_t mode, MainWindow *self) {
	g_debug("on_update_color_correction(%d)", mode);
}

static void on_update_video_color_temperature(PreferencesWindow *pref, const gint light_temperature, MainWindow *self) {
	g_debug("on_update_video_color_temperature(%d)", light_temperature);

	if (GB_is_inited(self->gb)) {
		// wouldn’t it be nice to use the value set in the GtkAdjustment of the slider instead of 256.0 here?
		GB_set_light_temperature(self->gb, (double) light_temperature / 256.0);
	}
}

static void on_update_monochrome_palette(PreferencesWindow *pref, const GB_palette_t *palette, MainWindow *self) {
	g_debug(
		"on_update_monochrome_palette(\n\trgb(%d, %d, %d),\n\trgb(%d, %d, %d),\n\trgb(%d, %d, %d),\n\trgb(%d, %d, %d),\n\trgb(%d, %d, %d)\n)",
		palette->colors[0].r, palette->colors[0].g, palette->colors[0].b,
		palette->colors[1].r, palette->colors[1].g, palette->colors[1].b,
		palette->colors[2].r, palette->colors[2].g, palette->colors[2].b,
		palette->colors[3].r, palette->colors[3].g, palette->colors[3].b,
		palette->colors[4].r, palette->colors[4].g, palette->colors[4].b
	);
}

static void on_update_highpass(PreferencesWindow *pref, const GB_highpass_mode_t mode, MainWindow *self) {
	g_debug("on_update_highpass(%d)", mode);
}

static void on_update_rewind_duration(PreferencesWindow *pref, const guint rewind_duration, MainWindow *self) {
	g_debug("on_update_rewind_duration(%d)", rewind_duration);
}

static void on_update_rumble_mode(PreferencesWindow *pref, const GB_rumble_mode_t mode, MainWindow *self) {
	g_debug("on_update_rumble_mode(%d)", mode);
}

static void on_update_video_display_border_mode(PreferencesWindow *pref, const gchar *name, MainWindow *self) {
	g_debug("on_update_video_display_border_mode(%s)", name);
	// gui_data.border_mode_changed = true;
}

static void on_update_video_shader(PreferencesWindow *pref, const gchar *name, MainWindow *self) {
	g_debug("on_update_video_shader(%s)", name);
	main_window_set_shader(self, name);
}

static void on_update_audio_sample_rate(PreferencesWindow *pref, const guint sample_rate, MainWindow *self) {
	g_debug("on_update_audio_sample_rate(%d)", sample_rate);

	if (sample_rate == -1) {
		// gui_data.sample_rate = GB_audio_default_sample_rate();
	}
	else {
		// gui_data.sample_rate = *sample_rate;
	}

	// init_audio();
}

static void on_update_audio_interference_volume(PreferencesWindow *pref, const guint *interference_volume, MainWindow *self) {
	g_debug("on_update_audio_interference_volume(%d)", *interference_volume);

	if (GB_is_inited(self->gb)) {
		// wouldn’t it be nice to use the value set in the GtkAdjustment of the slider instead of 100.0 here?
		GB_set_interference_volume(self->gb, (double) *interference_volume / 100.0);
	}
}

static void on_application_set(MainWindow *self, GObject *object) {
	SameBoyApplication *app = SAMEBOY_APPLICATION(gtk_window_get_application(GTK_WINDOW(self)));

	sameboy_application_preferences_signal_connect(app, "pref-update::color-correction", G_CALLBACK(on_update_color_correction), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::video-color-temperature", G_CALLBACK(on_update_video_color_temperature), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::monochrome-palette", G_CALLBACK(on_update_monochrome_palette), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::highpass", G_CALLBACK(on_update_highpass), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::rewind-duration", G_CALLBACK(on_update_rewind_duration), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::rumble-mode", G_CALLBACK(on_update_rumble_mode), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::video-display-border-mode", G_CALLBACK(on_update_video_display_border_mode), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::video-shader", G_CALLBACK(on_update_video_shader), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::audio-sample-rate", G_CALLBACK(on_update_audio_sample_rate), self);
	sameboy_application_preferences_signal_connect(app, "pref-update::audio-interference-volume", G_CALLBACK(on_update_audio_interference_volume), self);
}

static void main_window_constructed(GObject *object) {
	G_OBJECT_CLASS(main_window_parent_class)->constructed(object);

	MainWindow *self = (MainWindow *) object;

	self->screen = gb_screen_new(self->force_software_renderer);
	gtk_box_pack_end(GTK_BOX(self->container), GTK_WIDGET(self->screen), true, true, 0);

	g_signal_connect(self, "notify::application", G_CALLBACK(on_application_set), self);
}

static void main_window_init(MainWindow *self) {
	gtk_widget_init_template(GTK_WIDGET(self));

	gtk_window_set_title(GTK_WINDOW(self), "SameBoy");
	gtk_application_window_set_show_menubar(GTK_APPLICATION_WINDOW(self), false);

	// Connect signal handlers
	gtk_widget_add_events(GTK_WIDGET(self), GDK_KEY_PRESS_MASK);
	gtk_widget_add_events(GTK_WIDGET(self), GDK_KEY_RELEASE_MASK);

	GtkAccelGroup *accelGroup = gtk_accel_group_new();
	gtk_window_add_accel_group(GTK_WINDOW(self), accelGroup);
	gtk_widget_add_accelerator(GTK_WIDGET(self), "break-debugger-keyboard", accelGroup, GDK_KEY_C, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE);

	self->gb = g_malloc(sizeof(GB_gameboy_t));
	if (self->gb == NULL) {
		g_warning("Out of memory!");
		// TODO: Try to stop gracefully
		exit(EXIT_FAILURE);
	}

	self->console = console_window_new(self->gb);
	gtk_window_set_attached_to(GTK_WINDOW(self->console), GTK_WIDGET(self));

	self->vram_viewer = vram_viewer_window_new();
	gtk_window_set_attached_to(GTK_WINDOW(self->vram_viewer), GTK_WIDGET(self));

	self->printer = printer_window_new();
	gtk_window_set_attached_to(GTK_WINDOW(self->printer), GTK_WIDGET(self));
}

static void main_window_class_init(MainWindowClass *class) {
	gtk_widget_class_set_template_from_resource(GTK_WIDGET_CLASS(class), RESOURCE_PREFIX "ui/main_window.ui");

	gtk_widget_class_bind_template_child(GTK_WIDGET_CLASS(class), MainWindow, container);
	gtk_widget_class_bind_template_child(GTK_WIDGET_CLASS(class), MainWindow, main_menu);

	g_signal_new(
		"break-debugger-keyboard", // signal name
		G_TYPE_FROM_CLASS(class), // itype
		G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_ACTION, // signal_flags
		0, // class_offset
		NULL, // accumulator
		NULL, // accumulator_data
		NULL, // c_marshaller,
		G_TYPE_NONE, // return_type
		0 // n_params
	);

	obj_properties[PROP_FORCE_SOFTWARE_RENDERER] = g_param_spec_boolean(
		"force_software_renderer", "Software Renderer", "Forces the use of software rendering via Cairo",
		false,
		G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE
	);

	G_OBJECT_CLASS(class)->set_property = main_window_set_property;
	G_OBJECT_CLASS(class)->get_property = main_window_get_property;
	G_OBJECT_CLASS(class)->constructed  = main_window_constructed;

	g_object_class_install_properties(G_OBJECT_CLASS(class), N_PROPERTIES, obj_properties);
}

MainWindow *main_window_new(SameBoyApplication *application, bool force_software_renderer) {
	return g_object_new(
		MAIN_WINDOW_TYPE,
		"application", G_APPLICATION(application),
		"force_software_renderer", force_software_renderer,
		NULL
	);
}

void main_window_fullscreen(MainWindow *self, bool make_fullscreen) {
	if (make_fullscreen) {
		gtk_window_fullscreen(GTK_WINDOW(self));
	}
	else {
		gtk_window_unfullscreen(GTK_WINDOW(self));
	}
}

void main_window_setup_menu(MainWindow *self, char *model_string) {
	main_menu_setup(self->main_menu, model_string);
}

void main_window_open_console_window(MainWindow *self) {
	gtk_widget_show_all(GTK_WIDGET(self->console));
}

void main_window_open_memory_viewer_window(MainWindow *self) {
	g_warning("Not yet implemented!");
}

void main_window_open_vram_viewer_window(MainWindow *self) {
	gtk_widget_show_all(GTK_WIDGET(self->vram_viewer));
}

void main_window_open_printer_window(MainWindow *self) {
	gtk_widget_show_all(GTK_WIDGET(self->printer));
}

// GbScreen wrappers
void main_window_clear(MainWindow *self) {
	return gb_screen_clear(self->screen);
}

uint32_t *main_window_get_pixels(MainWindow *self) {
	return gb_screen_get_pixels(self->screen);
}

uint32_t *main_window_get_current_buffer(MainWindow *self) {
	return gb_screen_get_current_buffer(self->screen);
}

uint32_t *main_window_get_previous_buffer(MainWindow *self) {
	return gb_screen_get_previous_buffer(self->screen);
}

void main_window_flip(MainWindow *self) {
	return gb_screen_flip(self->screen);
}

void main_window_set_resolution(MainWindow *self, unsigned width, unsigned height) {
	return gb_screen_set_resolution(self->screen, width, height);
}

void main_window_set_blending_mode(MainWindow *self, GB_frame_blending_mode_t mode) {
	return gb_screen_set_blending_mode(self->screen, mode);
}

void main_window_set_shader(MainWindow *self, const char *shader_name) {
	return gb_screen_set_shader(self->screen, shader_name);
}

void main_window_queue_render(MainWindow *self) {
	return gb_screen_queue_render(self->screen);
}