Python から Google Calendar API を叩く方法とライブラリ化

py -m pip install google-auth google-auth-oauthlib google-auth-httplib2 google-api-python-client

import os
import datetime
from google.oauth2 import service_account
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request
from googleapiclient.discovery import build

class GoogleCalendar:
    def __init__(self, credentials_file, scopes=['https://www.googleapis.com/auth/calendar']):
        self.scopes = scopes
        self.credentials = self._get_credentials(credentials_file)
        if self.credentials is None:
            raise ValueError("Error: 認証情報が見つかりませんでした。")
        self.service = build('calendar', 'v3', credentials=self.credentials)

    def _get_credentials(self, credentials_file):
        # クレデンシャルファイルから認証情報を取得
        creds = None
        if os.path.exists(credentials_file):
            flow = InstalledAppFlow.from_client_secrets_file(credentials_file, self.scopes)
            creds = flow.run_local_server(port=0)
        return creds

    def get_events(self, calendar_id='primary', time_min=None, time_max=None):
        # 現在の日時または指定された期間内のイベントを取得
        if time_min is None:
            time_min = datetime.datetime.utcnow().isoformat() + 'Z'
        if time_max is None:
            time_max = (datetime.datetime.utcnow() + datetime.timedelta(weeks=1)).isoformat() + 'Z'

        events_result = self.service.events().list(
            calendarId=calendar_id,
            timeMin=time_min,
            timeMax=time_max,
            singleEvents=True,
            orderBy='startTime'
        ).execute()

        events = events_result.get('items', [])
        return events

    def create_event(self, event_data, calendar_id='primary'):
        # 新しいイベントを作成
        created_event = self.service.events().insert(calendarId=calendar_id, body=event_data).execute()
        return created_event

    def update_event(self, event_id, updated_event_data, calendar_id='primary'):
        # 既存のイベントを更新
        updated_event = self.service.events().patch(calendarId=calendar_id, eventId=event_id, body=updated_event_data).execute()
        return updated_event

    def delete_event(self, event_id, calendar_id='primary'):
        # イベントを削除
        self.service.events().delete(calendarId=calendar_id, eventId=event_id).execute()

    def search_events(self, query, calendar_id='primary'):
        # イベントを検索
        events_result = self.service.events().list(
            calendarId=calendar_id,
            q=query,
            singleEvents=True,
            orderBy='startTime'
        ).execute()

        events = events_result.get('items', [])
        return events

from GoogleCalendarLib import GoogleCalendar

def main():
    # GoogleカレンダーAPI認証情報ファイルのパスを指定
    credentials_file = "credentials.json"

    # GoogleCalendarクラスのインスタンスを作成
    gcal = GoogleCalendar(credentials_file)

    # イベントを取得
    print("取得したイベント:")
    events = gcal.get_events()
    for event in events:
        start = event['start'].get('dateTime', event['start'].get('date'))
        print(f"{start} - {event['summary']}")

    # 新しいイベントを作成
    event_data = {
        'summary': 'Test Event',
        'start': {
            'dateTime': '2023-04-01T10:00:00',
            'timeZone': 'Asia/Tokyo',
        },
        'end': {
            'dateTime': '2023-04-01T12:00:00',
            'timeZone': 'Asia/Tokyo',
        },
    }
    created_event = gcal.create_event(event_data)
    print(f"作成したイベント: {created_event['id']} - {created_event['summary']}")

    # イベントを検索
    print("検索結果:")
    search_results = gcal.search_events(query='Test Event')
    for event in search_results:
        print(f"{event['id']} - {event['summary']}")

    # イベントを更新
    updated_event_data = {
        'summary': 'Updated Test Event',
    }
    updated_event = gcal.update_event(created_event['id'], updated_event_data)
    print(f"更新したイベント: {updated_event['id']} - {updated_event['summary']}")

    # イベントを削除
    gcal.delete_event(created_event['id'])
    print(f"削除したイベント: {created_event['id']}")

if __name__ == "__main__":
    main()