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,
    UNIT_MICROGRAMS_PER_CUBIC_METER,
    DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS_PARTS,
    DEVICE_CLASS_CARBON_DIOXIDE,
    ICON_MOLECULE_CO2,
    STATE_CLASS_MEASUREMENT,
    UNIT_PARTS_PER_MILLION,
    CONF_TVOC,
    CONF_FORMADEHYDE,
    DEVICE_CLASS_GAS,
)

DEPENDENCIES = ["uart"]

kqm6600ta_ns = cg.esphome_ns.namespace("kqm6600ta")
KQM6600TAComponent = kqm6600ta_ns.class_("KQM6600TAComponent", cg.PollingComponent, uart.UARTDevice)

CONFIG_SCHEMA = (
    cv.Schema(
        {
            cv.GenerateID(): cv.declare_id(KQM6600TAComponent),
            cv.Required(CONF_CO2): sensor.sensor_schema(
                unit_of_measurement=UNIT_PARTS_PER_MILLION,
                icon=ICON_MOLECULE_CO2,
                accuracy_decimals=0,
                device_class=DEVICE_CLASS_CARBON_DIOXIDE,
                state_class=STATE_CLASS_MEASUREMENT,
            ),
            cv.Required(CONF_TVOC): sensor.sensor_schema(
                unit_of_measurement=UNIT_PARTS_PER_MILLION,
                icon="mdi:molecule",
                accuracy_decimals=1, #needs to be divided by 10
                device_class=DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS_PARTS,
                state_class=STATE_CLASS_MEASUREMENT,
            ),
            cv.Required(CONF_FORMADEHYDE): sensor.sensor_schema(
                unit_of_measurement=UNIT_MICROGRAMS_PER_CUBIC_METER,
                icon="mdi:molecule",
                accuracy_decimals=0, #needs to be multiplied by 10
                device_class=DEVICE_CLASS_GAS,
                state_class=STATE_CLASS_MEASUREMENT,
            ),
        }
    )
    .extend(cv.polling_component_schema("5s"))
    .extend(uart.UART_DEVICE_SCHEMA)
)


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

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

    if CONF_TVOC in config:
        sens = await sensor.new_sensor(config[CONF_TVOC])
        cg.add(var.set_voc_sensor(sens))

    if CONF_FORMADEHYDE in config:
        sens = await sensor.new_sensor(config[CONF_FORMADEHYDE])
        cg.add(var.set_formaldehyde_sensor(sens))