439 lines
14 KiB
Python
439 lines
14 KiB
Python
"""Support for Google - Calendar Event Devices."""
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from datetime import datetime, timedelta, timezone
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from enum import Enum
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import logging
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import os
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from googleapiclient import discovery as google_discovery
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import httplib2
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from oauth2client.client import (
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FlowExchangeError,
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OAuth2DeviceCodeError,
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OAuth2WebServerFlow,
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)
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from oauth2client.file import Storage
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import voluptuous as vol
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from voluptuous.error import Error as VoluptuousError
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import yaml
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from homeassistant.const import (
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CONF_CLIENT_ID,
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CONF_CLIENT_SECRET,
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CONF_DEVICE_ID,
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CONF_ENTITIES,
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CONF_NAME,
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CONF_OFFSET,
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)
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from homeassistant.helpers import discovery
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import homeassistant.helpers.config_validation as cv
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from homeassistant.helpers.entity import generate_entity_id
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from homeassistant.helpers.event import track_utc_time_change
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from homeassistant.util import convert
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_LOGGER = logging.getLogger(__name__)
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DOMAIN = "google"
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ENTITY_ID_FORMAT = DOMAIN + ".{}"
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CONF_TRACK_NEW = "track_new_calendar"
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CONF_CAL_ID = "cal_id"
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CONF_TRACK = "track"
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CONF_SEARCH = "search"
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CONF_IGNORE_AVAILABILITY = "ignore_availability"
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CONF_MAX_RESULTS = "max_results"
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CONF_CALENDAR_ACCESS = "calendar_access"
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DEFAULT_CONF_TRACK_NEW = True
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DEFAULT_CONF_OFFSET = "!!"
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EVENT_CALENDAR_ID = "calendar_id"
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EVENT_DESCRIPTION = "description"
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EVENT_END_CONF = "end"
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EVENT_END_DATE = "end_date"
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EVENT_END_DATETIME = "end_date_time"
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EVENT_IN = "in"
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EVENT_IN_DAYS = "days"
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EVENT_IN_WEEKS = "weeks"
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EVENT_START_CONF = "start"
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EVENT_START_DATE = "start_date"
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EVENT_START_DATETIME = "start_date_time"
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EVENT_SUMMARY = "summary"
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EVENT_TYPES_CONF = "event_types"
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NOTIFICATION_ID = "google_calendar_notification"
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NOTIFICATION_TITLE = "Google Calendar Setup"
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GROUP_NAME_ALL_CALENDARS = "Google Calendar Sensors"
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SERVICE_SCAN_CALENDARS = "scan_for_calendars"
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SERVICE_FOUND_CALENDARS = "found_calendar"
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SERVICE_ADD_EVENT = "add_event"
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DATA_INDEX = "google_calendars"
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YAML_DEVICES = f"{DOMAIN}_calendars.yaml"
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TOKEN_FILE = f".{DOMAIN}.token"
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class FeatureAccess(Enum):
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"""Class to represent different access scopes."""
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read_only = "https://www.googleapis.com/auth/calendar.readonly"
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read_write = "https://www.googleapis.com/auth/calendar"
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def __init__(self, scope: str) -> None:
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"""Init instance."""
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self._scope = scope
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@property
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def scope(self) -> str:
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"""Google calendar scope for the feature."""
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return self._scope
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CONFIG_SCHEMA = vol.Schema(
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{
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DOMAIN: vol.Schema(
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{
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vol.Required(CONF_CLIENT_ID): cv.string,
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vol.Required(CONF_CLIENT_SECRET): cv.string,
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vol.Optional(CONF_TRACK_NEW): cv.boolean,
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vol.Optional(CONF_CALENDAR_ACCESS, default="read_write"): cv.enum(
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FeatureAccess
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),
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}
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)
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},
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extra=vol.ALLOW_EXTRA,
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)
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_SINGLE_CALSEARCH_CONFIG = vol.All(
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cv.deprecated(CONF_MAX_RESULTS),
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vol.Schema(
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{
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vol.Required(CONF_NAME): cv.string,
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vol.Required(CONF_DEVICE_ID): cv.string,
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vol.Optional(CONF_IGNORE_AVAILABILITY, default=True): cv.boolean,
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vol.Optional(CONF_OFFSET): cv.string,
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vol.Optional(CONF_SEARCH): cv.string,
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vol.Optional(CONF_TRACK): cv.boolean,
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vol.Optional(CONF_MAX_RESULTS): cv.positive_int, # Now unused
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}
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),
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)
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DEVICE_SCHEMA = vol.Schema(
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{
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vol.Required(CONF_CAL_ID): cv.string,
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vol.Required(CONF_ENTITIES, None): vol.All(
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cv.ensure_list, [_SINGLE_CALSEARCH_CONFIG]
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),
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},
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extra=vol.ALLOW_EXTRA,
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)
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_EVENT_IN_TYPES = vol.Schema(
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{
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vol.Exclusive(EVENT_IN_DAYS, EVENT_TYPES_CONF): cv.positive_int,
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vol.Exclusive(EVENT_IN_WEEKS, EVENT_TYPES_CONF): cv.positive_int,
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}
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)
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ADD_EVENT_SERVICE_SCHEMA = vol.Schema(
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{
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vol.Required(EVENT_CALENDAR_ID): cv.string,
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vol.Required(EVENT_SUMMARY): cv.string,
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vol.Optional(EVENT_DESCRIPTION, default=""): cv.string,
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vol.Exclusive(EVENT_START_DATE, EVENT_START_CONF): cv.date,
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vol.Exclusive(EVENT_END_DATE, EVENT_END_CONF): cv.date,
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vol.Exclusive(EVENT_START_DATETIME, EVENT_START_CONF): cv.datetime,
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vol.Exclusive(EVENT_END_DATETIME, EVENT_END_CONF): cv.datetime,
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vol.Exclusive(EVENT_IN, EVENT_START_CONF, EVENT_END_CONF): _EVENT_IN_TYPES,
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}
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)
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def do_authentication(hass, hass_config, config):
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"""Notify user of actions and authenticate.
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Notify user of user_code and verification_url then poll
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until we have an access token.
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"""
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oauth = OAuth2WebServerFlow(
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client_id=config[CONF_CLIENT_ID],
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client_secret=config[CONF_CLIENT_SECRET],
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scope=config[CONF_CALENDAR_ACCESS].scope,
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redirect_uri="Home-Assistant.io",
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)
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try:
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dev_flow = oauth.step1_get_device_and_user_codes()
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except OAuth2DeviceCodeError as err:
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hass.components.persistent_notification.create(
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f"Error: {err}<br />You will need to restart hass after fixing." "",
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title=NOTIFICATION_TITLE,
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notification_id=NOTIFICATION_ID,
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)
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return False
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hass.components.persistent_notification.create(
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(
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f"In order to authorize Home-Assistant to view your calendars "
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f'you must visit: <a href="{dev_flow.verification_url}" target="_blank">{dev_flow.verification_url}</a> and enter '
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f"code: {dev_flow.user_code}"
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),
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title=NOTIFICATION_TITLE,
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notification_id=NOTIFICATION_ID,
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)
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def step2_exchange(now):
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"""Keep trying to validate the user_code until it expires."""
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# For some reason, oauth.step1_get_device_and_user_codes() returns a datetime
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# object without tzinfo. For the comparison below to work, it needs one.
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user_code_expiry = dev_flow.user_code_expiry.replace(tzinfo=timezone.utc)
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if now >= user_code_expiry:
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hass.components.persistent_notification.create(
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"Authentication code expired, please restart "
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"Home-Assistant and try again",
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title=NOTIFICATION_TITLE,
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notification_id=NOTIFICATION_ID,
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)
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listener()
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try:
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credentials = oauth.step2_exchange(device_flow_info=dev_flow)
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except FlowExchangeError:
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# not ready yet, call again
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return
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storage = Storage(hass.config.path(TOKEN_FILE))
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storage.put(credentials)
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do_setup(hass, hass_config, config)
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listener()
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hass.components.persistent_notification.create(
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(
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f"We are all setup now. Check {YAML_DEVICES} for calendars that have "
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f"been found"
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),
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title=NOTIFICATION_TITLE,
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notification_id=NOTIFICATION_ID,
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)
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listener = track_utc_time_change(
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hass, step2_exchange, second=range(0, 60, dev_flow.interval)
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)
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return True
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def setup(hass, config):
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"""Set up the Google platform."""
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if DATA_INDEX not in hass.data:
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hass.data[DATA_INDEX] = {}
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conf = config.get(DOMAIN, {})
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if not conf:
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# component is set up by tts platform
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return True
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token_file = hass.config.path(TOKEN_FILE)
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if not os.path.isfile(token_file):
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do_authentication(hass, config, conf)
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else:
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if not check_correct_scopes(token_file, conf):
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do_authentication(hass, config, conf)
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else:
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do_setup(hass, config, conf)
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return True
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def check_correct_scopes(token_file, config):
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"""Check for the correct scopes in file."""
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with open(token_file, encoding="utf8") as tokenfile:
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contents = tokenfile.read()
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# Check for quoted scope as our scopes can be subsets of other scopes
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target_scope = f'"{config.get(CONF_CALENDAR_ACCESS).scope}"'
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if target_scope not in contents:
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_LOGGER.warning("Please re-authenticate with Google")
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return False
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return True
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def setup_services(
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hass, hass_config, config, track_new_found_calendars, calendar_service
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):
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"""Set up the service listeners."""
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def _found_calendar(call):
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"""Check if we know about a calendar and generate PLATFORM_DISCOVER."""
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calendar = get_calendar_info(hass, call.data)
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if hass.data[DATA_INDEX].get(calendar[CONF_CAL_ID]) is not None:
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return
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hass.data[DATA_INDEX].update({calendar[CONF_CAL_ID]: calendar})
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update_config(
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hass.config.path(YAML_DEVICES), hass.data[DATA_INDEX][calendar[CONF_CAL_ID]]
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)
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discovery.load_platform(
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hass,
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"calendar",
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DOMAIN,
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hass.data[DATA_INDEX][calendar[CONF_CAL_ID]],
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hass_config,
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)
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hass.services.register(DOMAIN, SERVICE_FOUND_CALENDARS, _found_calendar)
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def _scan_for_calendars(service):
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"""Scan for new calendars."""
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service = calendar_service.get()
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cal_list = service.calendarList()
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calendars = cal_list.list().execute()["items"]
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for calendar in calendars:
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calendar["track"] = track_new_found_calendars
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hass.services.call(DOMAIN, SERVICE_FOUND_CALENDARS, calendar)
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hass.services.register(DOMAIN, SERVICE_SCAN_CALENDARS, _scan_for_calendars)
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def _add_event(call):
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"""Add a new event to calendar."""
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service = calendar_service.get()
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start = {}
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end = {}
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if EVENT_IN in call.data:
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if EVENT_IN_DAYS in call.data[EVENT_IN]:
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now = datetime.now()
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start_in = now + timedelta(days=call.data[EVENT_IN][EVENT_IN_DAYS])
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end_in = start_in + timedelta(days=1)
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start = {"date": start_in.strftime("%Y-%m-%d")}
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end = {"date": end_in.strftime("%Y-%m-%d")}
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elif EVENT_IN_WEEKS in call.data[EVENT_IN]:
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now = datetime.now()
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start_in = now + timedelta(weeks=call.data[EVENT_IN][EVENT_IN_WEEKS])
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end_in = start_in + timedelta(days=1)
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start = {"date": start_in.strftime("%Y-%m-%d")}
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end = {"date": end_in.strftime("%Y-%m-%d")}
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elif EVENT_START_DATE in call.data:
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start = {"date": str(call.data[EVENT_START_DATE])}
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end = {"date": str(call.data[EVENT_END_DATE])}
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elif EVENT_START_DATETIME in call.data:
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start_dt = str(
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call.data[EVENT_START_DATETIME].strftime("%Y-%m-%dT%H:%M:%S")
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)
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end_dt = str(call.data[EVENT_END_DATETIME].strftime("%Y-%m-%dT%H:%M:%S"))
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start = {"dateTime": start_dt, "timeZone": str(hass.config.time_zone)}
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end = {"dateTime": end_dt, "timeZone": str(hass.config.time_zone)}
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event = {
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"summary": call.data[EVENT_SUMMARY],
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"description": call.data[EVENT_DESCRIPTION],
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"start": start,
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"end": end,
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}
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service_data = {"calendarId": call.data[EVENT_CALENDAR_ID], "body": event}
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event = service.events().insert(**service_data).execute()
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# Only expose the add event service if we have the correct permissions
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if config.get(CONF_CALENDAR_ACCESS) is FeatureAccess.read_write:
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hass.services.register(
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DOMAIN, SERVICE_ADD_EVENT, _add_event, schema=ADD_EVENT_SERVICE_SCHEMA
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)
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return True
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def do_setup(hass, hass_config, config):
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"""Run the setup after we have everything configured."""
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# Load calendars the user has configured
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hass.data[DATA_INDEX] = load_config(hass.config.path(YAML_DEVICES))
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calendar_service = GoogleCalendarService(hass.config.path(TOKEN_FILE))
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track_new_found_calendars = convert(
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config.get(CONF_TRACK_NEW), bool, DEFAULT_CONF_TRACK_NEW
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)
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setup_services(
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hass, hass_config, config, track_new_found_calendars, calendar_service
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)
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for calendar in hass.data[DATA_INDEX].values():
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discovery.load_platform(hass, "calendar", DOMAIN, calendar, hass_config)
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# Look for any new calendars
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hass.services.call(DOMAIN, SERVICE_SCAN_CALENDARS, None)
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return True
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class GoogleCalendarService:
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"""Calendar service interface to Google."""
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def __init__(self, token_file):
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"""Init the Google Calendar service."""
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self.token_file = token_file
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def get(self):
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"""Get the calendar service from the storage file token."""
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credentials = Storage(self.token_file).get()
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http = credentials.authorize(httplib2.Http())
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service = google_discovery.build(
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"calendar", "v3", http=http, cache_discovery=False
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)
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return service
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def get_calendar_info(hass, calendar):
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"""Convert data from Google into DEVICE_SCHEMA."""
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calendar_info = DEVICE_SCHEMA(
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{
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CONF_CAL_ID: calendar["id"],
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CONF_ENTITIES: [
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{
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CONF_TRACK: calendar["track"],
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CONF_NAME: calendar["summary"],
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CONF_DEVICE_ID: generate_entity_id(
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"{}", calendar["summary"], hass=hass
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),
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}
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],
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}
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)
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return calendar_info
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def load_config(path):
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"""Load the google_calendar_devices.yaml."""
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calendars = {}
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try:
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with open(path, encoding="utf8") as file:
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data = yaml.safe_load(file)
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for calendar in data:
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try:
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calendars.update({calendar[CONF_CAL_ID]: DEVICE_SCHEMA(calendar)})
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except VoluptuousError as exception:
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# keep going
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_LOGGER.warning("Calendar Invalid Data: %s", exception)
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except FileNotFoundError:
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# When YAML file could not be loaded/did not contain a dict
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return {}
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return calendars
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def update_config(path, calendar):
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"""Write the google_calendar_devices.yaml."""
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with open(path, "a", encoding="utf8") as out:
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out.write("\n")
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yaml.dump([calendar], out, default_flow_style=False)
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