#include <pebble.h>

// window statics
static Window *s_main_window;
static TextLayer *s_time_mg_layer;
static TextLayer *s_time_layer;
// static GFont s_civic_font;
static const GRect s_time_grect = GRect(0, 0, PBL_DISPLAY_WIDTH, PBL_DISPLAY_HEIGHT);

// persist statics&defines
static GColor8 s_led_color;
static GColor8 s_bg_color;
static GColor8 s_mg_color;
static GColor8 s_fg_color;
#define storage_key_led_color 0
#define storage_key_bg_color 1
#define storage_key_mg_color 2
#define storage_key_fg_color 3

static void main_window_load() {
	Layer *window_layer = window_get_root_layer(s_main_window);

	if (persist_exists(storage_key_led_color)) {
		light_set_color_rgb888(persist_read_int(storage_key_led_color));
	} else {
		light_set_color(GColorWhite);
	}

	if (persist_exists(storage_key_bg_color)) {
		window_set_background_color(s_main_window, (GColor8){.argb = persist_read_int(storage_key_bg_color)});
	} else {
		window_set_background_color(s_main_window, GColorBlue);
	}

	if (persist_exists(storage_key_mg_color)) {
		s_time_mg_layer = text_layer_create(s_time_grect);
		text_layer_set_background_color(s_time_mg_layer, GColorClear);
		text_layer_set_text_color(s_time_mg_layer, (GColor8){.argb = persist_read_int(storage_key_mg_color)});
		// text_layer_set_font(s_time_mg_layer, s_civic_font);
		text_layer_set_text_alignment(s_time_mg_layer, GTextAlignmentCenter);
		text_layer_set_text(s_time_mg_layer, "88\n88");
		layer_add_child(window_layer, text_layer_get_layer(s_time_mg_layer));
	}

	if (persist_exists(storage_key_fg_color)) {
		text_layer_set_text_color(s_time_layer, (GColor8){.argb = persist_read_int(storage_key_fg_color)});
	} else {
		text_layer_set_text_color(s_time_layer, GColorWhite);
	}

	layer_add_child(window_layer, text_layer_get_layer(s_time_layer));
}

static void main_window_unload() {
	if (s_time_mg_layer) {
		text_layer_destroy(s_time_mg_layer);
	}
}

static void update_minute_1() {
	time_t temp = time(NULL);
	struct tm *tick_time = localtime(&temp);
	static char s_time_buffer[8];
	strftime(s_time_buffer, sizeof(s_time_buffer), clock_is_24h_style() ? "%H\n%M" : "%I\n%M", tick_time);
	text_layer_set_text(s_time_layer, s_time_buffer);
}

static void minute_handler(struct tm *tick_time, TimeUnits units_changed) {
	update_minute_1();
}

static void soft_reload(bool first_load) {
	if (!first_load) {
		window_stack_remove(s_main_window, false);
		window_destroy(s_main_window);
	}
	s_main_window = window_create();
	window_set_window_handlers(
	    s_main_window,
	    (WindowHandlers){.load = main_window_load, .unload = main_window_unload});
	window_stack_push(s_main_window, false);
}

static void init() {
	// s_civic_font = fonts_load_custom_font(resource_get_handle(RESOURCE_ID_CIVIC_FONT_100));
	s_time_layer = text_layer_create(s_time_grect);
	text_layer_set_background_color(s_time_layer, GColorClear);
	// text_layer_set_font(s_time_layer, s_civic_font);
	text_layer_set_text_alignment(s_time_layer, GTextAlignmentCenter);
	update_minute_1();
	soft_reload(true);
	tick_timer_service_subscribe(MINUTE_UNIT, minute_handler);
}

static void deinit() {
	tick_timer_service_unsubscribe();
	// fonts_unload_custom_font(s_civic_font);
	text_layer_destroy(s_time_layer);
	window_destroy(s_main_window);
}

int main(void) {
	init();
	app_event_loop();
	deinit();
}