// Author: Dirk Jahnke
// January 24, 2018
//
// Manage on board LED of SONOFF device
//
#include <stdio.h>
#include <time.h>

#include "mgos.h"
#include "mgos_gpio.h"
#include "mgos_sys_config.h"
#include "mgos_timers.h"

#include "ledHandler.h"

static int ON_BOARD_LED = 13; /* sonoff basic LED pin */

static enum LEDStatus currentStatus = LED_OFF;
static int numTicksLedHasThisState = 0;

void set_led_status(enum LEDStatus newStatus) {
    numTicksLedHasThisState = 0;
    currentStatus = newStatus;
    LOG(LL_INFO, ("set_led_status to %d", newStatus));
}

static void blink_on_board_led_cb(void *arg) {
    switch (currentStatus) {
        case LED_OFF:
            mgos_gpio_write(ON_BOARD_LED, 1);  // off
            break;
        case LED_ON:
            mgos_gpio_write(ON_BOARD_LED, 0);  // on
            break;
        case LED_BLINK_SLOW:
            ++numTicksLedHasThisState;
            if (numTicksLedHasThisState >= 4) {
                numTicksLedHasThisState = 0;
                mgos_gpio_toggle(ON_BOARD_LED);
            }
            break;
        case LED_BLINK_FAST:
            // toggle LED each tick
            mgos_gpio_toggle(ON_BOARD_LED);
            break;
        default:
            LOG(LL_ERROR, ("Invalid current LED status: %d -- ignored", currentStatus));
            break;
    }
    (void) arg;
}

void init_led_handler() {
    mgos_gpio_set_mode(ON_BOARD_LED, MGOS_GPIO_MODE_OUTPUT);
    mgos_set_timer(250, MGOS_TIMER_REPEAT, blink_on_board_led_cb, NULL);
    LOG(LL_INFO, ("LED handler initialized"));
}