import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import sensor, uart
from esphome.const import (
    CONF_CO2,
    CONF_ID,
    DEVICE_CLASS_EMPTY,
    ICON_MOLECULE_CO2,
    UNIT_PARTS_PER_MILLION,
)

DEPENDENCIES = ["uart"]

senseair_ns = cg.esphome_ns.namespace("senseair")
SenseAirComponent = senseair_ns.class_(
    "SenseAirComponent", cg.PollingComponent, uart.UARTDevice
)

CONFIG_SCHEMA = (
    cv.Schema(
        {
            cv.GenerateID(): cv.declare_id(SenseAirComponent),
            cv.Required(CONF_CO2): sensor.sensor_schema(
                UNIT_PARTS_PER_MILLION, ICON_MOLECULE_CO2, 0, DEVICE_CLASS_EMPTY
            ),
        }
    )
    .extend(cv.polling_component_schema("60s"))
    .extend(uart.UART_DEVICE_SCHEMA)
)


def to_code(config):
    var = cg.new_Pvariable(config[CONF_ID])
    yield cg.register_component(var, config)
    yield uart.register_uart_device(var, config)

    if CONF_CO2 in config:
        sens = yield sensor.new_sensor(config[CONF_CO2])
        cg.add(var.set_co2_sensor(sens))