from esphome.components import climate
import esphome.config_validation as cv
import esphome.codegen as cg
from esphome.const import CONF_ID, CONF_SWITCH_DATAPOINT
from .. import tuya_ns, CONF_TUYA_ID, Tuya

DEPENDENCIES = ['tuya']
CODEOWNERS = ['@jesserockz']

CONF_TARGET_TEMPERATURE_DATAPOINT = 'target_temperature_datapoint'
CONF_CURRENT_TEMPERATURE_DATAPOINT = 'current_temperature_datapoint'
CONF_TEMPERATURE_MULTIPLIER = 'temperature_multiplier'
CONF_CURRENT_TEMPERATURE_MULTIPLIER = 'current_temperature_multiplier'
CONF_TARGET_TEMPERATURE_MULTIPLIER = 'target_temperature_multiplier'

TuyaClimate = tuya_ns.class_('TuyaClimate', climate.Climate, cg.Component)


def validate_temperature_multipliers(value):
    if CONF_TEMPERATURE_MULTIPLIER in value:
        if (
                CONF_CURRENT_TEMPERATURE_MULTIPLIER in value
                or CONF_TARGET_TEMPERATURE_MULTIPLIER in value
        ):
            raise cv.Invalid((f"Cannot have {CONF_TEMPERATURE_MULTIPLIER} at the same time as "
                              f"{CONF_CURRENT_TEMPERATURE_MULTIPLIER} and "
                              f"{CONF_TARGET_TEMPERATURE_MULTIPLIER}"))
    if (
            CONF_CURRENT_TEMPERATURE_MULTIPLIER in value
            and CONF_TARGET_TEMPERATURE_MULTIPLIER not in value
    ):
        raise cv.Invalid((f"{CONF_TARGET_TEMPERATURE_MULTIPLIER} required if using "
                          f"{CONF_CURRENT_TEMPERATURE_MULTIPLIER}"))
    if (
            CONF_TARGET_TEMPERATURE_MULTIPLIER in value
            and CONF_CURRENT_TEMPERATURE_MULTIPLIER not in value
    ):
        raise cv.Invalid((f"{CONF_CURRENT_TEMPERATURE_MULTIPLIER} required if using "
                          f"{CONF_TARGET_TEMPERATURE_MULTIPLIER}"))
    keys = (
        CONF_TEMPERATURE_MULTIPLIER,
        CONF_CURRENT_TEMPERATURE_MULTIPLIER,
        CONF_TARGET_TEMPERATURE_MULTIPLIER
    )
    if all(multiplier not in value for multiplier in keys):
        value[CONF_TEMPERATURE_MULTIPLIER] = 1.0
    return value


CONFIG_SCHEMA = cv.All(climate.CLIMATE_SCHEMA.extend({
    cv.GenerateID(): cv.declare_id(TuyaClimate),
    cv.GenerateID(CONF_TUYA_ID): cv.use_id(Tuya),
    cv.Optional(CONF_SWITCH_DATAPOINT): cv.uint8_t,
    cv.Optional(CONF_TARGET_TEMPERATURE_DATAPOINT): cv.uint8_t,
    cv.Optional(CONF_CURRENT_TEMPERATURE_DATAPOINT): cv.uint8_t,
    cv.Optional(CONF_TEMPERATURE_MULTIPLIER): cv.positive_float,
    cv.Optional(CONF_CURRENT_TEMPERATURE_MULTIPLIER): cv.positive_float,
    cv.Optional(CONF_TARGET_TEMPERATURE_MULTIPLIER): cv.positive_float,
}).extend(cv.COMPONENT_SCHEMA), cv.has_at_least_one_key(
    CONF_TARGET_TEMPERATURE_DATAPOINT, CONF_SWITCH_DATAPOINT), validate_temperature_multipliers)


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

    paren = yield cg.get_variable(config[CONF_TUYA_ID])
    cg.add(var.set_tuya_parent(paren))

    if CONF_SWITCH_DATAPOINT in config:
        cg.add(var.set_switch_id(config[CONF_SWITCH_DATAPOINT]))
    if CONF_TARGET_TEMPERATURE_DATAPOINT in config:
        cg.add(var.set_target_temperature_id(config[CONF_TARGET_TEMPERATURE_DATAPOINT]))
    if CONF_CURRENT_TEMPERATURE_DATAPOINT in config:
        cg.add(var.set_current_temperature_id(config[CONF_CURRENT_TEMPERATURE_DATAPOINT]))
    if CONF_TEMPERATURE_MULTIPLIER in config:
        cg.add(var.set_target_temperature_multiplier(config[CONF_TEMPERATURE_MULTIPLIER]))
        cg.add(var.set_current_temperature_multiplier(config[CONF_TEMPERATURE_MULTIPLIER]))
    else:
        cg.add(var.set_current_temperature_multiplier(config[CONF_CURRENT_TEMPERATURE_MULTIPLIER]))
        cg.add(var.set_target_temperature_multiplier(config[CONF_TARGET_TEMPERATURE_MULTIPLIER]))