import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import i2c, sensor
from esphome.const import (
    CONF_ID,
    DEVICE_CLASS_EMPTY,
    ICON_RADIATOR,
    UNIT_PARTS_PER_MILLION,
    UNIT_PARTS_PER_BILLION,
    ICON_MOLECULE_CO2,
    CONF_TVOC,
)

DEPENDENCIES = ["i2c"]

sgp30_ns = cg.esphome_ns.namespace("sgp30")
SGP30Component = sgp30_ns.class_("SGP30Component", cg.PollingComponent, i2c.I2CDevice)

CONF_ECO2 = "eco2"
CONF_BASELINE = "baseline"
CONF_ECO2_BASELINE = "eco2_baseline"
CONF_TVOC_BASELINE = "tvoc_baseline"
CONF_UPTIME = "uptime"
CONF_COMPENSATION = "compensation"
CONF_HUMIDITY_SOURCE = "humidity_source"
CONF_TEMPERATURE_SOURCE = "temperature_source"

CONFIG_SCHEMA = (
    cv.Schema(
        {
            cv.GenerateID(): cv.declare_id(SGP30Component),
            cv.Required(CONF_ECO2): sensor.sensor_schema(
                UNIT_PARTS_PER_MILLION, ICON_MOLECULE_CO2, 0, DEVICE_CLASS_EMPTY
            ),
            cv.Required(CONF_TVOC): sensor.sensor_schema(
                UNIT_PARTS_PER_BILLION, ICON_RADIATOR, 0, DEVICE_CLASS_EMPTY
            ),
            cv.Optional(CONF_BASELINE): cv.Schema(
                {
                    cv.Required(CONF_ECO2_BASELINE): cv.hex_uint16_t,
                    cv.Required(CONF_TVOC_BASELINE): cv.hex_uint16_t,
                }
            ),
            cv.Optional(CONF_COMPENSATION): cv.Schema(
                {
                    cv.Required(CONF_HUMIDITY_SOURCE): cv.use_id(sensor.Sensor),
                    cv.Required(CONF_TEMPERATURE_SOURCE): cv.use_id(sensor.Sensor),
                }
            ),
        }
    )
    .extend(cv.polling_component_schema("60s"))
    .extend(i2c.i2c_device_schema(0x58))
)


def to_code(config):
    var = cg.new_Pvariable(config[CONF_ID])
    yield cg.register_component(var, config)
    yield i2c.register_i2c_device(var, config)

    if CONF_ECO2 in config:
        sens = yield sensor.new_sensor(config[CONF_ECO2])
        cg.add(var.set_eco2_sensor(sens))

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

    if CONF_BASELINE in config:
        baseline_config = config[CONF_BASELINE]
        cg.add(var.set_eco2_baseline(baseline_config[CONF_ECO2_BASELINE]))
        cg.add(var.set_tvoc_baseline(baseline_config[CONF_TVOC_BASELINE]))

    if CONF_COMPENSATION in config:
        compensation_config = config[CONF_COMPENSATION]
        sens = yield cg.get_variable(compensation_config[CONF_HUMIDITY_SOURCE])
        cg.add(var.set_humidity_sensor(sens))
        sens = yield cg.get_variable(compensation_config[CONF_TEMPERATURE_SOURCE])
        cg.add(var.set_temperature_sensor(sens))
