"""Support for Hydrawise sprinkler sensors."""
from __future__ import annotations

import logging

import voluptuous as vol

from homeassistant.components.sensor import (
    PLATFORM_SCHEMA,
    SensorEntity,
    SensorEntityDescription,
)
from homeassistant.const import (
    CONF_MONITORED_CONDITIONS,
    DEVICE_CLASS_TIMESTAMP,
    TIME_MINUTES,
)
import homeassistant.helpers.config_validation as cv
from homeassistant.util import dt

from . import DATA_HYDRAWISE, HydrawiseEntity

_LOGGER = logging.getLogger(__name__)

SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
    SensorEntityDescription(
        key="next_cycle",
        name="Next Cycle",
        device_class=DEVICE_CLASS_TIMESTAMP,
    ),
    SensorEntityDescription(
        key="watering_time",
        name="Watering Time",
        icon="mdi:water-pump",
        native_unit_of_measurement=TIME_MINUTES,
    ),
)

SENSOR_KEYS: list[str] = [desc.key for desc in SENSOR_TYPES]

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
    {
        vol.Optional(CONF_MONITORED_CONDITIONS, default=SENSOR_KEYS): vol.All(
            cv.ensure_list, [vol.In(SENSOR_KEYS)]
        )
    }
)

TWO_YEAR_SECONDS = 60 * 60 * 24 * 365 * 2
WATERING_TIME_ICON = "mdi:water-pump"


def setup_platform(hass, config, add_entities, discovery_info=None):
    """Set up a sensor for a Hydrawise device."""
    hydrawise = hass.data[DATA_HYDRAWISE].data
    monitored_conditions = config[CONF_MONITORED_CONDITIONS]

    entities = [
        HydrawiseSensor(zone, description)
        for zone in hydrawise.relays
        for description in SENSOR_TYPES
        if description.key in monitored_conditions
    ]

    add_entities(entities, True)


class HydrawiseSensor(HydrawiseEntity, SensorEntity):
    """A sensor implementation for Hydrawise device."""

    def update(self):
        """Get the latest data and updates the states."""
        mydata = self.hass.data[DATA_HYDRAWISE].data
        _LOGGER.debug("Updating Hydrawise sensor: %s", self.name)
        relay_data = mydata.relays[self.data["relay"] - 1]
        if self.entity_description.key == "watering_time":
            if relay_data["timestr"] == "Now":
                self._attr_native_value = int(relay_data["run"] / 60)
            else:
                self._attr_native_value = 0
        else:  # _sensor_type == 'next_cycle'
            next_cycle = min(relay_data["time"], TWO_YEAR_SECONDS)
            _LOGGER.debug("New cycle time: %s", next_cycle)
            self._attr_native_value = dt.utc_from_timestamp(
                dt.as_timestamp(dt.now()) + next_cycle
            ).isoformat()