import voluptuous as vol

from esphomeyaml import config_validation as cv, pins
from esphomeyaml.const import CONF_ID, CONF_PIN
from esphomeyaml.helpers import App, Pvariable, esphomelib_ns, gpio_output_pin_expression

StatusLED = esphomelib_ns.StatusLED

CONFIG_SCHEMA = vol.Schema({
    cv.GenerateID(): cv.declare_variable_id(StatusLED),
    vol.Optional(CONF_PIN): pins.gpio_output_pin_schema,
})


def to_code(config):
    pin = None
    for pin in gpio_output_pin_expression(config[CONF_PIN]):
        yield
    rhs = App.make_status_led(pin)
    Pvariable(config[CONF_ID], rhs)


BUILD_FLAGS = '-DUSE_STATUS_LED'