#include <bcl.h>
#include <bc_eeprom.h>
#include <bc_spi.h>
#include <bc_dice.h>

#define SERVICE_INTERVAL_INTERVAL (60 * 60 * 1000)
#define BATTERY_UPDATE_INTERVAL (60 * 60 * 1000)

#define TEMPERATURE_TAG_PUB_NO_CHANGE_INTEVAL (15 * 60 * 1000)
#define TEMPERATURE_TAG_PUB_VALUE_CHANGE 0.2f
#define TEMPERATURE_UPDATE_SERVICE_INTERVAL (5 * 1000)
#define TEMPERATURE_UPDATE_NORMAL_INTERVAL (10 * 1000)

#define APPLICATION_TASK_ID 0

#define COLOR_BLACK true


typedef struct {
	uint8_t number;
	float value;
	bc_tick_t next_pub;
} event_param_t;

bc_led_t led;
bc_led_t led_lcd_red;
bc_led_t led_lcd_blue;

// Thermometer instance
bc_tmp112_t tmp112;
event_param_t temperature_event_param = { .next_pub = 0, .value = NAN };
float temperature_on_display = NAN;

void tmp112_event_handler(bc_tmp112_t *self, bc_tmp112_event_t event, void *event_param) {
	float value;
	event_param_t *param = (event_param_t *)event_param;

	if (event != BC_TMP112_EVENT_UPDATE)
		return;

	if (bc_tmp112_get_temperature_celsius(self, &value)) {
		if ((fabsf(value - param->value) >= TEMPERATURE_TAG_PUB_VALUE_CHANGE) || (param->next_pub < bc_scheduler_get_spin_tick())) {
			bc_radio_pub_temperature(BC_RADIO_PUB_CHANNEL_R1_I2C0_ADDRESS_ALTERNATE, &value);
			param->value = value;
			param->next_pub = bc_scheduler_get_spin_tick() + TEMPERATURE_TAG_PUB_NO_CHANGE_INTEVAL;
		}
	} else
		param->value = NAN;

	if ((fabsf(param->value - temperature_on_display) >= 0.1) || isnan(temperature_on_display))
		bc_scheduler_plan_now(APPLICATION_TASK_ID);
}

int brightness = 0;

void set_brightness() {
	bc_radio_pub_int("led/brightness/set", &brightness);
}

void lcd_button_left_event_handler(bc_button_t *self, bc_button_event_t event, void *event_param) {
	if (event != BC_BUTTON_EVENT_CLICK)
		return;
	bc_led_pulse(&led_lcd_blue, 30);
	brightness = 100;
	set_brightness();
}

void lcd_button_right_event_handler(bc_button_t *self, bc_button_event_t event, void *event_param) {
	if (event != BC_BUTTON_EVENT_CLICK)
		return;
	bc_led_pulse(&led_lcd_red, 30);
	brightness = 0;
	set_brightness();
}

void battery_event_handler(bc_module_battery_event_t event, void *event_param) {
	if (event != BC_MODULE_BATTERY_EVENT_UPDATE)
		return;
	float voltage;
	 if (bc_module_battery_get_voltage(&voltage))
		bc_radio_pub_battery(&voltage);
}

void switch_to_normal_mode_task(void *param) {
	bc_tmp112_set_update_interval(&tmp112, TEMPERATURE_UPDATE_NORMAL_INTERVAL);
	bc_scheduler_unregister(bc_scheduler_get_current_task_id());
}

void application_init(void) {
	// Initialize LED on core module
	bc_led_init(&led, BC_GPIO_LED, false, false);
	bc_led_set_mode(&led, BC_LED_MODE_OFF);

	// Initialize Radio
	bc_radio_init(BC_RADIO_MODE_NODE_SLEEPING);

	// Initialize battery
	bc_module_battery_init();
	bc_module_battery_set_event_handler(battery_event_handler, NULL);
	bc_module_battery_set_update_interval(BATTERY_UPDATE_INTERVAL);

	// Initialize thermometer sensor on core module
	bc_tmp112_init(&tmp112, BC_I2C_I2C0, 0x49);
	bc_tmp112_set_event_handler(&tmp112, tmp112_event_handler, &temperature_event_param);
	bc_tmp112_set_update_interval(&tmp112, TEMPERATURE_UPDATE_SERVICE_INTERVAL);

	// Initialize LCD
	bc_module_lcd_init();

	// Initialize LCD button left
	static bc_button_t lcd_left;
	bc_button_init_virtual(&lcd_left, BC_MODULE_LCD_BUTTON_LEFT, bc_module_lcd_get_button_driver(), false);
	bc_button_set_event_handler(&lcd_left, lcd_button_left_event_handler, NULL);

	// Initialize LCD button right
	static bc_button_t lcd_right;
	bc_button_init_virtual(&lcd_right, BC_MODULE_LCD_BUTTON_RIGHT, bc_module_lcd_get_button_driver(), false);
	bc_button_set_event_handler(&lcd_right, lcd_button_right_event_handler, NULL);

	// Initialize red and blue LED on LCD module
	bc_led_init_virtual(&led_lcd_red, BC_MODULE_LCD_LED_RED, bc_module_lcd_get_led_driver(), true);
	bc_led_init_virtual(&led_lcd_blue, BC_MODULE_LCD_LED_BLUE, bc_module_lcd_get_led_driver(), true);

	bc_radio_pairing_request("lcd-thermostat", VERSION);

	bc_scheduler_register(switch_to_normal_mode_task, NULL, SERVICE_INTERVAL_INTERVAL);

	bc_led_pulse(&led, 2000);
}

void application_task(void) {
	static char str_temperature[10];
	if (!bc_module_lcd_is_ready())
		return;

	bc_system_pll_enable();
	bc_module_lcd_clear();

	bc_module_lcd_set_font(&bc_font_ubuntu_33);
	snprintf(str_temperature, sizeof(str_temperature), "%.1f   ", temperature_event_param.value);
	int x = bc_module_lcd_draw_string(20, 20, str_temperature, COLOR_BLACK);
	temperature_on_display = temperature_event_param.value;

	bc_module_lcd_set_font(&bc_font_ubuntu_24);
	bc_module_lcd_draw_string(x - 20, 25, "\xb0" "C   ", COLOR_BLACK);

	bc_module_lcd_update();

	bc_system_pll_disable();
}