A full-stack application that integrates with Google Calendar API using Next.js frontend and Golang backend.

• Google OAuth authentication
• Access token management
• Google Calendar API integration
• Recent calendar events display

• アプリ一覧ページ
  • https://api.slack.com/apps
• ngrokを使ってhttpsで起動できるようにする
• Slackのアプリを作成する
• Incoming Webhooksをonにする
• Manage DistributionをPublic Distributionにする
• Redirect URLsも設定とOAuth Tokensをonにする
• Client IDとClient Secretを取得する

1. Go to Google Cloud Console
2. Create a new project or select an existing one
3. Enable the Google Calendar API
4. Create OAuth 2.0 credentials:
   • APIとサービスの認証情報にアクセス
   • Application type: Web application
   • Authorized redirect URIs: http://localhost:3000/api/auth/callback/google
   • Note down the Client ID and Client Secret

cd frontend
npm install

Create .env.local file:

NEXTAUTH_URL=http://localhost:3000
NEXTAUTH_SECRET=your-secret-key-here
GOOGLE_CLIENT_ID=your-google-client-id
GOOGLE_CLIENT_SECRET=your-google-client-secret

cd backend
go mod tidy

Terminal 1 (Frontend):

cd frontend
npm run dev

Terminal 2 (Backend):

cd backend
go run main.go

1. Open http://localhost:3000
2. Click "Sign in with Google"
3. Authorize the application
4. Click "Fetch Calendar Data" to retrieve recent calendar events

• GET /api/calendar - Fetch calendar events (requires Bearer token)

• Frontend: Next.js, NextAuth.js, TypeScript, Tailwind CSS
• Backend: Go, Gin, Google Calendar API
• Authentication: Google OAuth 2.0