Google home notifications by python

python_google_home_notify_ja.md

Pythonを使ってGoogle Homeに指定したテキストを喋らせる

使い方

1. これをcloneする
2. virtualenvを用意する
3. pip install -r requirements.txtで依存パッケージをインストールする
4. python server.pyでサーバーを起動する
5. ブラウザで、サーバーにアクセスして、フォームにテキストと言語を指定して「喋る」ボタンを押す
6. Google Homeが喋った！

requirements.txt

pychromecast
gTTS
bottle

server.py

# -*- coding: utf-8 -*-
import os
import hashlib
import logging
from pathlib import Path
from bottle import Bottle, request, template, static_file
from gtts import gTTS
import pychromecast


BASE_DIR = Path(__file__).parent
TALK_DIR = BASE_DIR / 'var'

app = Bottle()


@app.route('/talks/<file_path:path>')
def post_talk(file_path):
    return static_file(file_path, root=TALK_DIR)


@app.route('/form', method='GET')
def get_talk_form():
    content = BASE_DIR / 'template.html'
    text = request.forms.text or ''
    lang = request.forms.lang or 'ja'
    return template(
        content.open().read(), langs=gTTS.LANGUAGES, lang=lang, text=text)


@app.route('/form', method='POST')
def post_talk_form():
    text = request.forms.text
    lang = request.forms.lang
    text_token = generate_talk(text, lang)
    url = f"http://{app.host}:{app.port}/talks/{text_token}"
    chromecasts = pychromecast.get_chromecasts()
    cast = chromecasts[0]
    mc = cast.media_controller
    mc.play_media(url, 'audio/mp3')
    return get_talk_form()


def generate_talk(text, lang):
    text_token = hashlib.sha256((lang + text).encode()).hexdigest()
    talk_path = TALK_DIR / text_token
    if not talk_path.exists():
        tts = gTTS(text=text, lang=lang)
        tts.save(talk_path)
    return text_token


if __name__ == '__main__':
    if not TALK_DIR.exists():
        TALK_DIR.mkdir()
    app.host = os.environ.get('SERVER_HOST', '192.168.0.20')
    app.port = os.environ.get('SERVER_PORT', '8080')
    app.run(host='0.0.0.0', port=app.port, reloader=True)

template.html

<h1>Google Home notifier</h1>
<hr />
<form method="POST">
    <p>
        Text:
        <textarea name="text">{{text}}</textarea>
    </p>
    <p>
        Lang:
        <select name="lang">
            % for code, title in langs.items():
                % if code == lang:
                <option value="{{code}}" selected>{{title}}</option>
                % else:
                <option value="{{code}}">{{title}}</option>
                % end
            % end
        </select>
    </p>
    <p>
        <button>喋る</button>
    </p>
</form>