"""Component that will help set the Dlib face detect processing."""
import io
import logging

import face_recognition  # pylint: disable=import-error

from homeassistant.components.image_processing import (
    CONF_ENTITY_ID,
    CONF_NAME,
    CONF_SOURCE,
    ImageProcessingFaceEntity,
)

# pylint: disable=unused-import
from homeassistant.components.image_processing import PLATFORM_SCHEMA  # noqa
from homeassistant.core import split_entity_id

_LOGGER = logging.getLogger(__name__)

ATTR_LOCATION = "location"


def setup_platform(hass, config, add_entities, discovery_info=None):
    """Set up the Dlib Face detection platform."""
    entities = []
    for camera in config[CONF_SOURCE]:
        entities.append(
            DlibFaceDetectEntity(camera[CONF_ENTITY_ID], camera.get(CONF_NAME))
        )

    add_entities(entities)


class DlibFaceDetectEntity(ImageProcessingFaceEntity):
    """Dlib Face API entity for identify."""

    def __init__(self, camera_entity, name=None):
        """Initialize Dlib face entity."""
        super().__init__()

        self._camera = camera_entity

        if name:
            self._name = name
        else:
            self._name = "Dlib Face {0}".format(split_entity_id(camera_entity)[1])

    @property
    def camera_entity(self):
        """Return camera entity id from process pictures."""
        return self._camera

    @property
    def name(self):
        """Return the name of the entity."""
        return self._name

    def process_image(self, image):
        """Process image."""

        fak_file = io.BytesIO(image)
        fak_file.name = "snapshot.jpg"
        fak_file.seek(0)

        image = face_recognition.load_image_file(fak_file)
        face_locations = face_recognition.face_locations(image)

        face_locations = [{ATTR_LOCATION: location} for location in face_locations]

        self.process_faces(face_locations, len(face_locations))
