WhatsApp Chat Recap Generator

This project is a WhatsApp chat recap generator that uses AI to summarize daily conversations. It's built with TypeScript and uses Bun as the Node.js runtime.

Project Structure

• index.ts: Main entry point for the WhatsApp client
• server.ts: Express server for handling recap generation requests
• recap.ts: Contains logic for generating recaps using OpenAI
• messages.ts: Handles fetching messages from WhatsApp
• public/index.html: Frontend for the recap generator
• prisma/schema.prisma: Database schema for storing messages

How It Works

1. WhatsApp Client (index.ts):

   • Uses whatsapp-web.js to connect to WhatsApp
   • Fetches messages and saves them to the database

2. Message Fetching (messages.ts):

   • Provides functionality to fetch all messages from a chat
   • Uses WhatsApp Web's internal APIs to load messages

3. Database (prisma/schema.prisma):

   • Uses Prisma with SQLite to store messages
   • Stores message content, timestamps, and metadata

4. Recap Generation (recap.ts):

   • Fetches messages for a specific date from the database
   • Uses OpenAI's GPT model to generate a summary
   • Supports multiple languages

5. Web Server (server.ts):

   • Express server that serves the frontend and handles API requests
   • Caches generated recaps for 24 hours

6. Frontend (public/index.html):

   • Simple interface for selecting a date and language
   • Sends requests to the server and displays the generated recap

Setup and Running

1. Install dependencies:

   bun install
   

2. Set up environment variables:

   • DATABASE_URL: SQLite database URL (eg. "file:./dev.db")
   • OPENROUTER_KEY: OpenAI/OpenRouter API key

3. Run the WhatsApp client:

   bun run index.ts
   

4. Run the web server:

   bun run server.ts
   

5. Open http://localhost:3000 in your browser to use the recap generator..

Dependencies

• whatsapp-web.js: For interacting with WhatsApp
• openai: For generating recaps using AI
• prisma: For database operations
• express: For the web server
• node-cache: For caching generated recaps