"""Support for monitoring juicenet/juicepoint/juicebox based EVSE sensors."""
import logging

from homeassistant.const import ENERGY_WATT_HOUR, POWER_WATT, TEMP_CELSIUS
from homeassistant.helpers.entity import Entity

from . import DOMAIN, JuicenetDevice

_LOGGER = logging.getLogger(__name__)

SENSOR_TYPES = {
    "status": ["Charging Status", None],
    "temperature": ["Temperature", TEMP_CELSIUS],
    "voltage": ["Voltage", "V"],
    "amps": ["Amps", "A"],
    "watts": ["Watts", POWER_WATT],
    "charge_time": ["Charge time", "s"],
    "energy_added": ["Energy added", ENERGY_WATT_HOUR],
}


def setup_platform(hass, config, add_entities, discovery_info=None):
    """Set up the Juicenet sensor."""
    api = hass.data[DOMAIN]["api"]

    dev = []
    for device in api.get_devices():
        for variable in SENSOR_TYPES:
            dev.append(JuicenetSensorDevice(device, variable, hass))

    add_entities(dev)


class JuicenetSensorDevice(JuicenetDevice, Entity):
    """Implementation of a Juicenet sensor."""

    def __init__(self, device, sensor_type, hass):
        """Initialise the sensor."""
        super().__init__(device, sensor_type, hass)
        self._name = SENSOR_TYPES[sensor_type][0]
        self._unit_of_measurement = SENSOR_TYPES[sensor_type][1]

    @property
    def name(self):
        """Return the name of the device."""
        return "{} {}".format(self.device.name(), self._name)

    @property
    def icon(self):
        """Return the icon of the sensor."""
        icon = None
        if self.type == "status":
            status = self.device.getStatus()
            if status == "standby":
                icon = "mdi:power-plug-off"
            elif status == "plugged":
                icon = "mdi:power-plug"
            elif status == "charging":
                icon = "mdi:battery-positive"
        elif self.type == "temperature":
            icon = "mdi:thermometer"
        elif self.type == "voltage":
            icon = "mdi:flash"
        elif self.type == "amps":
            icon = "mdi:flash"
        elif self.type == "watts":
            icon = "mdi:flash"
        elif self.type == "charge_time":
            icon = "mdi:timer"
        elif self.type == "energy_added":
            icon = "mdi:flash"
        return icon

    @property
    def unit_of_measurement(self):
        """Return the unit the value is expressed in."""
        return self._unit_of_measurement

    @property
    def state(self):
        """Return the state."""
        state = None
        if self.type == "status":
            state = self.device.getStatus()
        elif self.type == "temperature":
            state = self.device.getTemperature()
        elif self.type == "voltage":
            state = self.device.getVoltage()
        elif self.type == "amps":
            state = self.device.getAmps()
        elif self.type == "watts":
            state = self.device.getWatts()
        elif self.type == "charge_time":
            state = self.device.getChargeTime()
        elif self.type == "energy_added":
            state = self.device.getEnergyAdded()
        else:
            state = "Unknown"
        return state

    @property
    def device_state_attributes(self):
        """Return the state attributes."""
        attributes = {}
        if self.type == "status":
            man_dev_id = self.device.id()
            if man_dev_id:
                attributes["manufacturer_device_id"] = man_dev_id
        return attributes
