JSONで管理する「家族向け定時アナウンスシステム」─ 祝日API連動・音楽＋音声合わせ技

pip install requests pydub

sudo apt install ffmpeg

smarthome/
└── core/
    └── notify/
        └── time_rule/
            ├── config/
            │   └── messages.json       # アナウンスルール定義ファイル
            └── time_rule_notice.py     # メインプログラム（常駐サービス）

[
    {"datetime":"*/05/21 00:00:00","weekdays":"1234567","message":"<名前>さん！{{YEAR}-<生まれ年>}歳のお誕生日おめでとうございます！","audiofile":null,"notify_on_holidays":true,"place":"LIVING"},
    {"datetime":"*/11/23 00:00:00","weekdays":"1234567","message":"<名前>さん！{{YEAR}-<生まれ年>}歳のお誕生日おめでとうございます！","audiofile":null,"notify_on_holidays":true,"place":"LIVING"},
    {"datetime":"*07:20:00","weekdays":"23456","message":"{HOUR}時{MINUTE}分になりました。早く起きてください。","audiofile":"ohayo_music.mp3","notify_on_holidays":false,"place":"CHILD_ROOM"},
    {"datetime":"*07:30:00","weekdays":"23456","message":"{HOUR}時{MINUTE}分になりました。","audiofile":null,"notify_on_holidays":false,"place":"LIVING;CHILD_ROOM"},
    {"datetime":"*08:*:00","weekdays":"23456","message":"{HOUR}時{MINUTE}分になりました。","audiofile":null,"notify_on_holidays":false,"place":"CHILD_ROOM"},
    {"datetime":"*21:00:00","weekdays":"1234567","message":"9時になりました。","audiofile":null,"notify_on_holidays":true,"place":null}
]

# -*- coding: utf-8 -*-
import sys
import os
import requests
import json
import time
import datetime
import fnmatch
import googlehome
from pydub import AudioSegment

# Google Home の初期設定
google_notify_living   = googlehome.Notify(googlehome.GoogleHome.LIVING)
google_notify_childroom = googlehome.Notify(googlehome.GoogleHome.CHILD_ROOM, volume_gain_db=16)
google_notify_nesthub  = googlehome.Notify(googlehome.GoogleHome.NEST_HUB)

# アナウンスルールを読み込む
with open('config/messages.json', 'r') as f:
    messages = json.load(f)

# 音声ファイルディレクトリ
AUDIO_FILE_DIR_PATH = '/home/<username>/projects/smarthome/webserver/audio/'

# 祝日 API から祝日一覧を取得
response_holidays = requests.get('https://holidays-jp.github.io/api/v1/date.json')
holidays = response_holidays.json()

# 年末年始（法定祝日外）を手動で追加
year = datetime.datetime.now().year
for y in [year - 1, year, year + 1]:
    holidays[f'{y}-01-02'] = '三が日'
    holidays[f'{y}-01-03'] = '三が日'
    holidays[f'{y}-12-29'] = '年末休暇'
    holidays[f'{y}-12-30'] = '年末休暇'
    holidays[f'{y}-12-31'] = '大晦日'

def is_holiday(date_str_yyyymmdd: str) -> str | None:
    """指定した日付が祝日なら祝日名を返す。祝日でなければ None を返す。"""
    for holiday_date, holiday_name in holidays.items():
        if holiday_date.replace('-', '/') == date_str_yyyymmdd:
            return holiday_name
    return None

def replace_variables(message: str) -> str:
    """メッセージ内の {YEAR} などの変数を現在日時の値に置換する。"""
    now = datetime.datetime.now()
    message = message.replace('{YEAR}',   now.strftime('%Y'))
    message = message.replace('{MONTH}',  now.strftime('%-m'))
    message = message.replace('{DAY}',    now.strftime('%-d'))
    message = message.replace('{HOUR}',   now.strftime('%-H'))
    message = message.replace('{MINUTE}', now.strftime('%-M'))
    message = message.replace('{SECOND}', now.strftime('%-S'))
    # {} に囲まれた計算式を eval で展開（例：{2026-1980} → 46）
    while '{' in message and '}' in message:
        l = message.find('{')
        r = message.find('}')
        formula = message[l+1:r]
        message = message[:l] + str(eval(formula)) + message[r+1:]
    return message

def speak(message: str, place: str | None):
    """指定した場所の Google Home に発話させる。"""
    if place is None or 'LIVING' in place:
        google_notify_living.speak(message)
    if place is not None and 'CHILD_ROOM' in place:
        google_notify_childroom.speak(message)
    if place is not None and 'NEST_HUB' in place:
        google_notify_nesthub.speak(message)

def play_audio(audiofile: str, place: str | None):
    """指定した場所の Google Home で BGM を再生する。"""
    if place is None or 'LIVING' in place:
        google_notify_living.play_audio(audiofile)
    if place is not None and 'CHILD_ROOM' in place:
        google_notify_childroom.play_audio(audiofile)
    if place is not None and 'NEST_HUB' in place:
        google_notify_nesthub.play_audio(audiofile)

# --- メインループ ---
while True:
    time.sleep(0.9)  # 約0.9秒ごとにチェック

    now = datetime.datetime.now()
    now_str = now.strftime('%Y/%m/%d %H:%M:%S')

    # 曜日を変換（1=日・2=月・3=火・4=水・5=木・6=金・7=土）
    weekday = now.weekday()  # Python: 月=0, ..., 日=6
    weekday = 1 if weekday == 6 else weekday + 2

    for message in messages:
        # 日時パターンと曜日をチェック
        if not fnmatch.fnmatch(now_str, message['datetime']):
            continue
        if str(weekday) not in message['weekdays']:
            continue

        # 祝日チェック
        if not message['notify_on_holidays']:
            holiday_name = is_holiday(now_str[:10])
            if holiday_name is not None:
                print(f'祝日({holiday_name})のためスキップ')
                continue

        # BGM を再生（audiofile が指定されている場合）
        if message['audiofile'] is not None:
            audio = AudioSegment.from_file(AUDIO_FILE_DIR_PATH + message['audiofile'])
            audio_seconds = len(audio) / 1000
            play_audio(message['audiofile'], message['place'])

            # メッセージもある場合は BGM が終わるまで待機
            if message['message'] is not None:
                time.sleep(audio_seconds + 0.1)

        # 音声メッセージを発話
        if message['message'] is not None:
            speaking_message = replace_variables(message['message'])
            speak(speaking_message, message['place'])
            time.sleep(0.1)  # 連続発話防止

[Unit]
Description=Regular Notice
After=network.target

[Service]
ExecStart=/home/<username>/Projects/venv/bin/python /home/<username>/Projects/smarthome/core/notify/time_rule/time_rule_notice.py
Restart=always
RestartSec=60
Type=simple
User=<username>

[Install]
WantedBy=multi-user.target

sudo systemctl enable smh-time-rule-notice.service
sudo systemctl start smh-time-rule-notice.service
sudo systemctl status smh-time-rule-notice.service

now_str = datetime.datetime.now().strftime('%Y/%m/%d %H:%M:%S')
# 例："2026/05/21 00:00:00"

# パターン "*/05/21 00:00:00" → 毎年5月21日0時0分0秒にマッチ
# パターン "*07:20:00"        → 任意の日付の7時20分0秒にマッチ
# パターン "*08:*:00"         → 任意の日付の8時台の毎分0秒にマッチ
if fnmatch.fnmatch(now_str, message['datetime']):
    ...

weekday = now.weekday()          # 月=0, 火=1, ..., 土=5, 日=6
weekday = 1 if weekday == 6 else weekday + 2
# 月=2, 火=3, 水=4, 木=5, 金=6, 土=7, 日=1

{"message": "<名前>さん！{{YEAR}-<生まれ年>}歳のお誕生日おめでとうございます！"}

audio = AudioSegment.from_file(AUDIO_FILE_DIR_PATH + message['audiofile'])
audio_seconds = len(audio) / 1000  # ミリ秒 → 秒

play_audio(message['audiofile'], message['place'])

# BGM 終了後に音声メッセージを発話する場合は待機
if message['message'] is not None:
    time.sleep(audio_seconds + 0.1)

sudo journalctl -u smh-time-rule-notice.service -f

{"datetime":"*15:31:00","weekdays":"1234567","message":"テストです。{HOUR}時{MINUTE}分です。","audiofile":null,"notify_on_holidays":true,"place":null}