150 lines
4.8 KiB
Python
150 lines
4.8 KiB
Python
"""Helpers to deal with Cast devices."""
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from __future__ import annotations
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from typing import Optional
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import attr
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from pychromecast import dial
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from pychromecast.const import CAST_TYPE_GROUP
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from pychromecast.models import CastInfo
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@attr.s(slots=True, frozen=True)
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class ChromecastInfo:
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"""Class to hold all data about a chromecast for creating connections.
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This also has the same attributes as the mDNS fields by zeroconf.
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"""
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cast_info: CastInfo = attr.ib()
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is_dynamic_group = attr.ib(type=Optional[bool], default=None)
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@property
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def friendly_name(self) -> str:
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"""Return the UUID."""
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return self.cast_info.friendly_name
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@property
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def is_audio_group(self) -> bool:
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"""Return if the cast is an audio group."""
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return self.cast_info.cast_type == CAST_TYPE_GROUP
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@property
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def uuid(self) -> bool:
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"""Return the UUID."""
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return self.cast_info.uuid
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def fill_out_missing_chromecast_info(self) -> ChromecastInfo:
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"""Return a new ChromecastInfo object with missing attributes filled in.
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Uses blocking HTTP / HTTPS.
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"""
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if not self.is_audio_group or self.is_dynamic_group is not None:
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# We have all information, no need to check HTTP API.
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return self
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# Fill out missing group information via HTTP API.
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is_dynamic_group = False
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http_group_status = None
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http_group_status = dial.get_multizone_status(
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None,
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services=self.cast_info.services,
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zconf=ChromeCastZeroconf.get_zeroconf(),
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)
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if http_group_status is not None:
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is_dynamic_group = any(
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g.uuid == self.cast_info.uuid for g in http_group_status.dynamic_groups
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)
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return ChromecastInfo(
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cast_info=self.cast_info,
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is_dynamic_group=is_dynamic_group,
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)
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class ChromeCastZeroconf:
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"""Class to hold a zeroconf instance."""
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__zconf = None
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@classmethod
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def set_zeroconf(cls, zconf):
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"""Set zeroconf."""
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cls.__zconf = zconf
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@classmethod
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def get_zeroconf(cls):
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"""Get zeroconf."""
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return cls.__zconf
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class CastStatusListener:
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"""Helper class to handle pychromecast status callbacks.
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Necessary because a CastDevice entity can create a new socket client
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and therefore callbacks from multiple chromecast connections can
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potentially arrive. This class allows invalidating past chromecast objects.
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"""
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def __init__(self, cast_device, chromecast, mz_mgr, mz_only=False):
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"""Initialize the status listener."""
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self._cast_device = cast_device
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self._uuid = chromecast.uuid
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self._valid = True
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self._mz_mgr = mz_mgr
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if cast_device._cast_info.is_audio_group:
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self._mz_mgr.add_multizone(chromecast)
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if mz_only:
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return
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chromecast.register_status_listener(self)
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chromecast.socket_client.media_controller.register_status_listener(self)
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chromecast.register_connection_listener(self)
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if not cast_device._cast_info.is_audio_group:
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self._mz_mgr.register_listener(chromecast.uuid, self)
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def new_cast_status(self, cast_status):
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"""Handle reception of a new CastStatus."""
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if self._valid:
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self._cast_device.new_cast_status(cast_status)
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def new_media_status(self, media_status):
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"""Handle reception of a new MediaStatus."""
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if self._valid:
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self._cast_device.new_media_status(media_status)
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def new_connection_status(self, connection_status):
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"""Handle reception of a new ConnectionStatus."""
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if self._valid:
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self._cast_device.new_connection_status(connection_status)
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@staticmethod
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def added_to_multizone(group_uuid):
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"""Handle the cast added to a group."""
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def removed_from_multizone(self, group_uuid):
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"""Handle the cast removed from a group."""
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if self._valid:
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self._cast_device.multizone_new_media_status(group_uuid, None)
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def multizone_new_cast_status(self, group_uuid, cast_status):
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"""Handle reception of a new CastStatus for a group."""
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def multizone_new_media_status(self, group_uuid, media_status):
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"""Handle reception of a new MediaStatus for a group."""
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if self._valid:
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self._cast_device.multizone_new_media_status(group_uuid, media_status)
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def invalidate(self):
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"""Invalidate this status listener.
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All following callbacks won't be forwarded.
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"""
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# pylint: disable=protected-access
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if self._cast_device._cast_info.is_audio_group:
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self._mz_mgr.remove_multizone(self._uuid)
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else:
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self._mz_mgr.deregister_listener(self._uuid, self)
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self._valid = False
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