ゴミの日をGoogle homeで教えてもらう

app.py

# coding: utf-8

from datetime import date
from pathlib import Path
import os
import hashlib
import threading
import time
from wsgiref import simple_server

import pychromecast
from gtts import gTTS
import falcon

import settings as conf


weekdays = ['月', '火',  '水', '木', '金', '土', '日']

def get_nweekday(d: date) -> (int, int):
    first = date(d.year, d.month, 1).weekday()
    weekdays = [(first + x) % 7 for x in range(0, d.day)]
    wd = d.weekday()
    cnt = weekdays.count(wd)
    return cnt, wd

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

class Talk():
    def __init__(self, token):
        self.token = token

    def on_get(self, req, resp):
        resp.content_type = 'audio/mp3'
        audio_path = conf.talks_dir / self.token
        stream = audio_path.open(mode='rb')
        size = os.path.getsize(audio_path) 
        resp.stream, resp.stream_len = stream, size

def talk_home():
    chcasts = pychromecast.get_chromecasts()
    for ch in chcasts:
        if ch.device.friendly_name == conf.device_name:
            chcast = ch
            break
    url = f"http://{conf.server_ipaddr}:{conf.server_port}/talk"
    chcast.wait()
    mc = chcast.media_controller
    mc.play_media(url, 'audio/mp3')

def create_app(talk:str):
    token = generate_talk(talk, 'ja')
    api = falcon.API()
    api.add_route('/talk', Talk(token))
    return api

def serve_app(message: str):
    api = create_app(message)
    with simple_server.make_server(conf.server_ipaddr, conf.server_port, api) as httpd:
        httpd.handle_request()

def talk_grbg(d: date):
    n, wday = get_nweekday(d)
    weekday = weekdays[wday]
    key = (str(n), weekday)

    message = None
    if key in conf.grbg_days:
        grbg = conf.grbg_days[key]
        message = f"今日は第{n}{weekday}曜日。{grbg}の日だよ。"
    elif ('*', weekday) in conf.grbg_days:
        grbg = conf.grbg_days[('*', weekday)]
        message = f"今日は{weekday}曜日。{grbg}の日だよ。"

    if message:
        print(message)
        talk_thread = threading.Thread(target=serve_app, name="talk server", args=(message,))    
        talk_thread.setDaemon(True)
        talk_thread.start()
        time.sleep(10)
        talk_home()
        talk_thread.join(timeout=10)

if __name__ == '__main__':
    d = date.today()
    talk_grbg(d)

settings.py.example

# coding: utf-8

import os
from pathlib import Path

server_ipaddr = '127.0.0.1'
server_port = 8818
device_name = 'My Google Home'
talks_dir = Path(os.path.dirname(__file__)) / 'talks'
grbg_days = [{('*', '月'), "古紙回収"},
             {('*', '火'), "資源回収"},
             {('*', '水'), "燃やすゴミ"},
             {('1', '木'), "燃やさなゴミ"},
             {('3', '木'), "燃やさなゴミ"},
             {('*', '土'), "燃やすゴミ"}]