在hass上检测通过Google Home生成的Google Calendar Event

在hass上检测通过Google Home生成的Google Calendar Event

先track一个event

通过测试发现，通过google home设定的event是出现在默认的日历里面的。

设定好要监控的日历event：

- cal_id: xxx1@gmail.com # calendar "default"
  entities:
  - device_id: 'take a walk'
    # name: "\u9ED8\u8BA4"
    name: "to take a walk"
    search: "take a walk"
    track: true

设定好automation：

- alias: 'TTS on event : take a walk'
  trigger:
    platform: state
    entity_id: calendar.take_a_walk
    from: 'off'
    to: 'on'
  action:
    service: tts.google_say
    entity_id: media_player.living_room_home
    data:
      message: "Time to take a walk, human!"

重启hass。
时间到了之后，什么都没发生。
哪里出了错？

但是到了预定触发时间点之后的1分钟，触发了!

# the event should start at 18:07:00

backend output log:

Nov 28 18:08:53 ... Bus:Handling <Event state_changed[L]: old_state=<state calendar.take_a_walk=off; start_time=None, location=None, all_day=False, message=, end_time=None, offset_reached=False, friendly_name=to take a walk, description=None @ 2017-11-28T17:53:34.752647+08:00>, entity_id=calendar.take_a_walk, new_state=<state calendar.take_a_walk=on; start_time=2017-11-28 18:07:00, location=, all_day=False, message=take a walk, end_time=2017-11-28 18:37:00, offset_reached=False, friendly_name=to take a walk, description= @ 2017-11-28T18:08:53.297229+08:00>>
Nov 28 18:08:53 ... Bus:Handling <Event state_changed[L]: old_state=<state group.calendar=off; auto=True, hidden=True, friendly_name=calendar, assumed_state=False, entity_id=('calendar.take_a_walk',), order=5 @ 2017-11-28T17:53:34.758268+08:00>, entity_id=group.calendar, new_state=<state group.calendar=on; auto=True, hidden=True, friendly_name=calendar, assumed_state=False, entity_id=('calendar.take_a_walk',), order=5 @ 2017-11-28T18:08:53.304413+08:00>>
Nov 28 18:08:57 ... Bus:Handling <Event state_changed[L]: old_state=<state automation.tts_on_event__take_a_walk=on; friendly_name=TTS on event : take a walk, last_triggered=None @ 2017-11-28T17:53:34.808990+08:00>, entity_id=automation.tts_on_event__take_a_walk, new_state=<state automation.tts_on_event__take_a_walk=on; friendly_name=TTS on event : take a walk, last_triggered=2017-11-28T18:08:57.812445+08:00 @ 2017-11-28T17:53:34.808990+08:00>>

尝试说出中文

google tts号称支持的语言：
https://cloud.google.com/speech/docs/languages
但里面的“cmn-Hans-CN”这样的写法并不被google支持，会报错。

上文链接中说用到了这里的规定：
https://tools.ietf.org/html/bcp47

For example, the macrolanguage Chinese ('zh') encompasses a number of
languages. For compatibility reasons, each of these languages has
both a primary and extended language subtag in the registry. A few
selected examples of these include Gan Chinese ('gan'), Cantonese
Chinese ('yue'), and Mandarin Chinese ('cmn'). Each is encompassed
by the macrolanguage 'zh' (Chinese). Therefore, they each have the
prefix "zh" in their registry records. Thus, Gan Chinese is
represented with tags beginning "zh-gan" or "gan", Cantonese with
tags beginning either "yue" or "zh-yue", and Mandarin Chinese with
"zh-cmn" or "cmn". The language subtag 'zh' can still be used
without an extended language subtag to label a resource as some
unspecified variety of Chinese, while the primary language subtag
('gan', 'yue', 'cmn') is preferred to using the extended language
form ("zh-gan", "zh-yue", "zh-cmn").

那么language参数的正确写法，中文很可能是"language:zh"
所以可以把action的data改成这样：

  action:
    service: tts.google_say
    entity_id: media_player.living_room_home
    data:
      message: "嗨！该站起来走走了！"
      language: "zh"

结果证明是可以的。

通过google搜索还可以找到这里的使用案例：pndurette/gTTS#31

利用timer组件达到TTS重复发声的目的

timer官方文档： https://home-assistant.io/components/timer/
设计思路：

• automation1： "TTS on event (speak and start timer) "
  trigger: 当日历事件
  action:
  触发automation之后发声，
  并触发一个timer： timer_for_repeat_tts_on_google_calender_event
  并设定一个标记为on
• automation2： "TTS on timer (speak and start timer again)"
  trigger: timer_for_repeat_tts_on_google_calender_event
  condition: 标记是否已经off
  action:
  发声
  并重启timer_for_repeat_tts_on_google_calender_event

那么，如何设定一个可以on/off的标记呢？

设计思路：
在automation1中设定一个标记，比如一个智能插座（或灯）。
这个标记将成为automation2的执行条件
手动关闭这个插座或灯，就可以结束automation2导致的循环

设置timer

timer的配置文件和常见的书写方式略有不同：
设置多个timer，必须得这样：

timer_for_repeat_tts_on_google_calender_event:
  duration: '00:01:00'
timer_for_repeat_tts_on_google_calender_event_2:
  duration: '00:01:00'

不能用 "-"那种模式

最终完成重复TTS配置如下

timer:

timer_for_repeat_tts_take_a_walk:
  duration: '00:00:10'

automation:

################################################################
# begin : automation for "stop working, take a walk"
- alias: "TTS on event (speak and start timer): stop working, take a walk"
  trigger:
    platform: state
    entity_id: calendar.start_work
    from: 'on'
    to: 'off' # stop working
  action:
    - service: tts.google_say
      entity_id: media_player.living_room_home
      data:
        message: "Time to take a walk, human!"
    - service: switch.turn_on # set the signal on
      entity_id: switch.orange_orvibo_wifi_socket
    - service: timer.start # start the timer for repeat
      entity_id: timer.timer_for_repeat_tts_take_a_walk

- alias: "TTS on timer (speak and start timer again): stop working, take a walk"
  trigger:
    platform: state
    entity_id: timer.timer_for_repeat_tts_take_a_walk
    to: 'idle' # time up
  condition:
    condition: state
    entity_id: switch.orange_orvibo_wifi_socket
    state: 'on' # repeat if signal is on
  action:
    - service: tts.google_say
      entity_id: media_player.living_room_home
      data:
        # message: "Time to take a walk, human!"
        message: "喂！够了够了，必须站起来走走了！"
        language: "zh"
    - service: timer.start # start this timer again
      entity_id: timer.timer_for_repeat_tts_take_a_walk
# end : automation for "stop working, take a walk"
################################################################

不足的地方：

• event 下发不及时
  说检查状态的间隔时间是15分钟
• event 无法在通过google home设定时间周期，总是默认1小时长度
  最终发现，在这个案例中，可以通过设置开始时间为 "20 minutes ago"来控制总时长
• event 状态有时候不更新
  原因未知。