load('api_config.js');
load('api_gpio.js');
load('api_mqtt.js');
load('api_sys.js');
load('api_timer.js');
load("api_neopixel.js");

// Helper C function get_led_gpio_pin() in src/main.c returns built-in LED GPIO
let led = ffi('int get_led_gpio_pin()')();

let getInfo = function() {
  return JSON.stringify({total_ram: Sys.total_ram(), free_ram: Sys.free_ram()});
};

// Blink built-in LED every second
GPIO.set_mode(led, GPIO.MODE_OUTPUT);
Timer.set(1000 /* 1 sec */, true /* repeat */, function() {
  let value = GPIO.toggle(led);
  print(value ? 'Tick' : 'Tock', 'uptime:', Sys.uptime(), getInfo());
}, null);

// Publish to MQTT topic on a button press. Button is wired to GPIO pin 0
GPIO.set_button_handler(0, GPIO.PULL_UP, GPIO.INT_EDGE_NEG, 200, function() {
  let topic = '/devices/' + Cfg.get('device.id') + '/events';
  let message = getInfo();
  let ok = MQTT.pub(topic, message, 1);
  print('Published:', ok ? 'yes' : 'no', 'topic:', topic, 'message:', message);
}, null);

function initNeopixel() {
  let pin = 2, numPixels = 20, colorOrder = NeoPixel.GRB;
  let strip = NeoPixel.create(pin, numPixels, colorOrder);
  strip.setPixel(0 / pixel /, 12, 34, 56);
  strip.show();

  strip.clear();
  strip.setPixel(1 / pixel /, 12, 34, 56);
  strip.show();
}

initNeopixel();