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#!/usr/bin/env python3
# © Copyright 2021-2022, Scott Gasch
"""Utilities for dealing with the chromecasts."""
import atexit
import datetime
import logging
import threading
from typing import Any, List
import pychromecast
import smart_home.device as dev
from decorator_utils import memoized
logger = logging.getLogger(__name__)
class BaseChromecast(dev.Device):
"""A base class to represent a Google Chromecase device."""
ccasts: List[Any] = []
refresh_ts = None
browser = None
lock = threading.Lock()
def __init__(self, name: str, mac: str, keywords: str = "") -> None:
super().__init__(name.strip(), mac.strip(), keywords)
ip = self.get_ip()
now = datetime.datetime.now()
with BaseChromecast.lock:
if (
BaseChromecast.refresh_ts is None
or (now - BaseChromecast.refresh_ts).total_seconds() > 60
):
logger.debug('Refreshing the shared chromecast info list')
if BaseChromecast.browser is not None:
BaseChromecast.browser.stop_discovery()
(
BaseChromecast.ccasts,
BaseChromecast.browser,
) = pychromecast.get_chromecasts(timeout=15.0)
assert BaseChromecast.browser is not None
atexit.register(BaseChromecast.browser.stop_discovery)
BaseChromecast.refresh_ts = now
self.cast = None
for cc in BaseChromecast.ccasts:
if cc.cast_info.host == ip and cc.cast_info.cast_type != 'group':
logger.debug('Found chromecast at %s: %s', ip, cc)
self.cast = cc
self.cast.wait(timeout=1.0)
if self.cast is None:
raise Exception(f'Can\'t find ccast device at {ip}, is that really a ccast device?')
def is_idle(self):
return self.cast.is_idle
@memoized
def get_uuid(self):
return self.cast.uuid
@memoized
def get_friendly_name(self):
return self.cast.name
def get_uri(self):
return self.cast.url
@memoized
def get_model_name(self):
return self.cast.model_name
@memoized
def get_cast_type(self):
return self.cast.cast_type
@memoized
def app_id(self):
return self.cast.app_id
def get_app_display_name(self):
return self.cast.app_display_name
def get_media_controller(self):
return self.cast.media_controller
def status(self):
if self.is_idle():
return 'idle'
app = self.get_app_display_name()
mc = self.get_media_controller()
status = mc.status
return f'{app} / {status.title}'
def start_app(self, app_id, force_launch=False):
"""Start an app on the Chromecast."""
self.cast.start_app(app_id, force_launch)
def quit_app(self):
"""Tells the Chromecast to quit current app_id."""
self.cast.quit_app()
def volume_up(self, delta=0.1):
"""Increment volume by 0.1 (or delta) unless it is already maxed.
Returns the new volume.
"""
return self.cast.volume_up(delta)
def volume_down(self, delta=0.1):
"""Decrement the volume by 0.1 (or delta) unless it is already 0.
Returns the new volume.
"""
return self.cast.volume_down(delta)
def __repr__(self):
return (
f"Chromecast({self.cast.socket_client.host!r}, port={self.cast.socket_client.port!r}, "
f"device={self.cast.cast_info.friendly_name!r})"
)
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