Daily Digest - Calendar Gmail Summary

A full-stack application that provides smart summaries of your calendar events and Gmail messages using Google's Gemini AI. The application includes text and audio summaries, smart replies, and priority-based organization of your daily schedule.

Features

• OAuth2 authentication with Google Calendar and Gmail
• AI-powered daily summaries of calendar events and emails
• Text-to-Speech summaries
• Priority-based organization of events and emails
• Smart reply suggestions for emails
• Real-time calendar invite management
• Secure SSL/TLS communication
• MongoDB database integration

Prerequisites

• Python 3.8+
• Node.js 16+
• MongoDB
• Google Cloud Platform account with Calendar and Gmail APIs enabled
• Gemini API key

Installation

1. Clone the Repository

git clone https://github.com/yourusername/Calendar-Gmail-Summary.git
cd Calendar-Gmail-Summary

2. Backend Setup

1. Create and activate a Python virtual environment:

cd backend
python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate

2. Install dependencies:

pip install -r requirements.txt

3. Configure environment variables: Create a .env file in the backend directory with the following variables:

FLASK_SECRET_KEY=your_secret_key
FRONTEND_URL=https://localhost:3001
MONGO_URI=mongodb://127.0.0.1:27017/
GOOGLE_CLIENT_ID=your_google_client_id
GOOGLE_CLIENT_SECRET=your_google_client_secret
GEMINI_API_KEY=your_gemini_api_key

4. Set up Google OAuth:

• Place your client_secret.json file in the backend directory (obtain this from Google Cloud Console)

3. Frontend Setup

1. Install dependencies:

cd frontend
npm install

2. Generate SSL certificates for local development:

openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365 -nodes

3. Configure environment variables: Create a .env file in the frontend directory:

REACT_APP_API_URL=https://localhost:5000
HTTPS=true
SSL_CRT_FILE=cert.pem
SSL_KEY_FILE=key.pem

Running the Application

1. Start MongoDB

mongod --dbpath /path/to/your/data/directory

2. Start the Backend Server

cd backend
python app.py

The backend server will start on https://localhost:5000

3. Start the Frontend Development Server

cd frontend
npm start

The frontend will be available on https://localhost:3001

Google Cloud Platform Setup

1. Create a new project in Google Cloud Console
2. Enable the following APIs:
   • Google Calendar API
   • Gmail API
   • People API
3. Configure OAuth consent screen
4. Create OAuth 2.0 credentials
   • Set authorized redirect URIs:
     • https://localhost:5000/oauth2callback
   • Download the client configuration file as client_secret.json

Project Structure

backend/              # Flask backend
├── app.py           # Main application file
├── blueprints/      # Route handlers
├── config/          # Configuration files
├── models/          # Database models
├── services/        # Business logic
└── utils/           # Helper functions

frontend/            # React frontend
├── public/          # Static files
└── src/
    ├── components/  # React components
    ├── context/     # React context
    ├── hooks/       # Custom hooks
    └── utils/       # Helper functions

Security Notes

• The application uses SSL/TLS for secure communication
• OAuth 2.0 is used for secure authentication
• Sensitive credentials are stored in environment variables
• MongoDB connection is secured by default configuration

Troubleshooting

1. Certificate Issues:

   • Ensure you have valid SSL certificates
   • Accept the self-signed certificate in your browser for local development

2. MongoDB Connection:

   • Verify MongoDB is running
   • Check the connection string in .env file

3. OAuth Errors:

   • Verify redirect URIs in Google Cloud Console
   • Ensure client_secret.json is properly configured

Contributing

1. Fork the repository
2. Create your feature branch
3. Commit your changes
4. Push to the branch
5. Create a new Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details