from datetime import timedelta
from typing import Optional

from homeassistant.const import DEVICE_CLASS_TEMPERATURE, TEMP_CELSIUS, TEMP_FAHRENHEIT
from gekitchen import ErdCode, ErdCodeType, ErdCodeClass, ErdMeasurementUnits

from ge_kitchen.const import DOMAIN
from ge_kitchen.devices import ApplianceApi
from .ge_entity import GeEntity


class GeErdEntity(GeEntity):
    """Parent class for GE entities tied to a specific ERD"""
    def __init__(self, api: ApplianceApi, erd_code: ErdCodeType, erd_override: str = None, icon_override: str = None, device_class_override: str = None):
        super().__init__(api)
        self._erd_code = api.appliance.translate_erd_code(erd_code)
        self._erd_code_class = api.appliance.get_erd_code_class(self._erd_code)
        self._erd_override = erd_override
        self._icon_override = icon_override
        self._device_class_override = device_class_override
        
    @property
    def erd_code(self) -> ErdCodeType:
        return self._erd_code
    
    @property
    def erd_code_class(self) -> ErdCodeClass:
        return self._erd_code_class

    @property
    def erd_string(self) -> str:
        erd_code = self.erd_code
        if isinstance(self.erd_code, ErdCode):
            return erd_code.name
        return erd_code

    @property
    def name(self) -> Optional[str]:
        erd_string = self.erd_string
        
        #override the name if specified
        if self._erd_override != None:
            erd_string = self._erd_override

        erd_title = " ".join(erd_string.split("_")).title()
        return f"{self.serial_number} {erd_title}"

    @property
    def unique_id(self) -> Optional[str]:
        return f"{DOMAIN}_{self.serial_number}_{self.erd_string.lower()}"

    def _stringify(self, value: any, **kwargs) -> Optional[str]:
        """ Stringify a value """
        # perform special processing before passing over to the default method
        if self.erd_code == ErdCode.CLOCK_TIME:
            return value.strftime("%H:%M:%S") if value else None        
        if self.erd_code_class == ErdCodeClass.RAW_TEMPERATURE:
            return f"{value}"
        if self.erd_code_class == ErdCodeClass.NON_ZERO_TEMPERATURE:
            return f"{value}" if value else ""
        if self.erd_code_class == ErdCodeClass.TIMER or isinstance(value, timedelta):
            return str(value)[:-3] if value else ""
        if value is None:
            return None
        return self.appliance.stringify_erd_value(value, kwargs)

    @property
    def _temp_measurement_system(self) -> Optional[ErdMeasurementUnits]:
        try:
            value = self.appliance.get_erd_value(ErdCode.TEMPERATURE_UNIT)
        except KeyError:
            return None
        return value

    def _get_icon(self):
        """Select an appropriate icon."""

        if self._icon_override:
            return self._icon_override
        if not isinstance(self.erd_code, ErdCode):
            return None
        if self.erd_code_class == ErdCodeClass.CLOCK:
            return "mdi:clock"
        if self.erd_code_class == ErdCodeClass.COUNTER:
            return "mdi:counter"
        if self.erd_code_class == ErdCodeClass.DOOR:
            return "mdi:door"
        if self.erd_code_class == ErdCodeClass.TIMER:
            return "mdi:timer-outline"
        if self.erd_code_class == ErdCodeClass.LOCK_CONTROL:
            return "mdi:lock-outline"
        if self.erd_code_class == ErdCodeClass.SABBATH_CONTROL:
            return "mdi:judaism"
        if self.erd_code_class == ErdCodeClass.COOLING_CONTROL:
            return "mdi:snowflake"
        if self.erd_code_class == ErdCodeClass.OVEN_SENSOR:
            return "mdi:stove"
        if self.erd_code_class == ErdCodeClass.FRIDGE_SENSOR:
            return "mdi:fridge-bottom"
        if self.erd_code_class == ErdCodeClass.FREEZER_SENSOR:
            return "mdi:fridge-top"
        if self.erd_code_class == ErdCodeClass.DISPENSER_SENSOR:
            return "mdi:cup-water"
        if self.erd_code_class == ErdCodeClass.DISHWASHER_SENSOR:
            return "mdi:dishwasher"

        return None