"""Support for Agent camera streaming."""
from datetime import timedelta
import logging

from agent import AgentError

from homeassistant.components.camera import SUPPORT_ON_OFF
from homeassistant.components.mjpeg import MjpegCamera, filter_urllib3_logging
from homeassistant.const import ATTR_ATTRIBUTION
from homeassistant.helpers import entity_platform
from homeassistant.helpers.entity import DeviceInfo

from .const import (
    ATTRIBUTION,
    CAMERA_SCAN_INTERVAL_SECS,
    CONNECTION,
    DOMAIN as AGENT_DOMAIN,
)

SCAN_INTERVAL = timedelta(seconds=CAMERA_SCAN_INTERVAL_SECS)

_LOGGER = logging.getLogger(__name__)

_DEV_EN_ALT = "enable_alerts"
_DEV_DS_ALT = "disable_alerts"
_DEV_EN_REC = "start_recording"
_DEV_DS_REC = "stop_recording"
_DEV_SNAP = "snapshot"

CAMERA_SERVICES = {
    _DEV_EN_ALT: "async_enable_alerts",
    _DEV_DS_ALT: "async_disable_alerts",
    _DEV_EN_REC: "async_start_recording",
    _DEV_DS_REC: "async_stop_recording",
    _DEV_SNAP: "async_snapshot",
}


async def async_setup_entry(
    hass, config_entry, async_add_entities, discovery_info=None
):
    """Set up the Agent cameras."""
    filter_urllib3_logging()
    cameras = []

    server = hass.data[AGENT_DOMAIN][config_entry.entry_id][CONNECTION]
    if not server.devices:
        _LOGGER.warning("Could not fetch cameras from Agent server")
        return

    for device in server.devices:
        if device.typeID == 2:
            camera = AgentCamera(device)
            cameras.append(camera)

    async_add_entities(cameras)

    platform = entity_platform.async_get_current_platform()
    for service, method in CAMERA_SERVICES.items():
        platform.async_register_entity_service(service, {}, method)


class AgentCamera(MjpegCamera):
    """Representation of an Agent Device Stream."""

    def __init__(self, device):
        """Initialize as a subclass of MjpegCamera."""
        self.device = device
        self._removed = False
        self._attr_name = f"{device.client.name} {device.name}"
        self._attr_unique_id = f"{device._client.unique}_{device.typeID}_{device.id}"
        super().__init__(
            name=device.name,
            mjpeg_url=f"{device.client._server_url}{device.mjpeg_image_url}&size={device.mjpegStreamWidth}x{device.mjpegStreamHeight}",
            still_image_url=f"{device.client._server_url}{device.still_image_url}&size={device.mjpegStreamWidth}x{device.mjpegStreamHeight}",
        )
        self._attr_device_info = DeviceInfo(
            identifiers={(AGENT_DOMAIN, self.unique_id)},
            manufacturer="Agent",
            model="Camera",
            name=self.name,
            sw_version=device.client.version,
        )

    async def async_update(self):
        """Update our state from the Agent API."""
        try:
            await self.device.update()
            if self._removed:
                _LOGGER.debug("%s reacquired", self.name)
            self._removed = False
        except AgentError:
            # server still available - camera error
            if self.device.client.is_available and not self._removed:
                _LOGGER.error("%s lost", self.name)
                self._removed = True
        self._attr_icon = "mdi:camcorder-off"
        if self.is_on:
            self._attr_icon = "mdi:camcorder"
        self._attr_available = self.device.client.is_available
        self._attr_extra_state_attributes = {
            ATTR_ATTRIBUTION: ATTRIBUTION,
            "editable": False,
            "enabled": self.is_on,
            "connected": self.connected,
            "detected": self.is_detected,
            "alerted": self.is_alerted,
            "has_ptz": self.device.has_ptz,
            "alerts_enabled": self.device.alerts_active,
        }

    @property
    def should_poll(self) -> bool:
        """Update the state periodically."""
        return True

    @property
    def is_recording(self) -> bool:
        """Return whether the monitor is recording."""
        return self.device.recording

    @property
    def is_alerted(self) -> bool:
        """Return whether the monitor has alerted."""
        return self.device.alerted

    @property
    def is_detected(self) -> bool:
        """Return whether the monitor has alerted."""
        return self.device.detected

    @property
    def connected(self) -> bool:
        """Return True if entity is connected."""
        return self.device.connected

    @property
    def supported_features(self) -> int:
        """Return supported features."""
        return SUPPORT_ON_OFF

    @property
    def is_on(self) -> bool:
        """Return true if on."""
        return self.device.online

    @property
    def motion_detection_enabled(self):
        """Return the camera motion detection status."""
        return self.device.detector_active

    async def async_enable_alerts(self):
        """Enable alerts."""
        await self.device.alerts_on()

    async def async_disable_alerts(self):
        """Disable alerts."""
        await self.device.alerts_off()

    async def async_enable_motion_detection(self):
        """Enable motion detection."""
        await self.device.detector_on()

    async def async_disable_motion_detection(self):
        """Disable motion detection."""
        await self.device.detector_off()

    async def async_start_recording(self):
        """Start recording."""
        await self.device.record()

    async def async_stop_recording(self):
        """Stop recording."""
        await self.device.record_stop()

    async def async_turn_on(self):
        """Enable the camera."""
        await self.device.enable()

    async def async_snapshot(self):
        """Take a snapshot."""
        await self.device.snapshot()

    async def async_turn_off(self):
        """Disable the camera."""
        await self.device.disable()
