adding supabase readme

README.md

@@ -101,6 +101,7 @@ ElatoAI consists of three main components:
 11. **User Authentication**: Secure user authentication and authorization.
 12. **Conversations with WebRTC and Websockets**: Talk to your AI with WebRTC on the NextJS webapp and with websockets on the ESP32.
 13. **Volume Control**: Control the volume of the ESP32 speaker from the NextJS webapp.
+14. **Realtime Transcripts**: The realtime transcripts of your conversations are stored in the Supabase DB.
 
 ## 🛠 Tech Stack
 
@@ -172,12 +173,12 @@ lib_deps =
 - ⏳ **Uninterrupted Conversations**: Up to 10 minutes continuous conversations
 - 🌎 **Global Availability**: Optimized with edge computing with Deno
 
-
 ## 🛡 Security
 
 - Secure WebSockets (WSS) for encrypted data transfers
 - Optional: API Key encryption with 256-bit AES
 - Supabase DB for secure authentication
+- Supabase RLS for all tables
 
 ## 🚫 Limitations
 

supabase/README.md

@@ -0,0 +1,67 @@
+# Supabase Setup and Usage Guide
+
+## Installation
+
+1. **Install Supabase CLI**
+   ```bash
+   # Using NPM
+   npm install -g supabase
+   
+   # Using Homebrew (macOS)
+   brew install supabase/tap/supabase
+   ```
+
+2. **Start Supabase locally**
+   ```bash
+   # Navigate to your project
+   cd ElatoAI
+   
+   # Start Supabase local development
+   supabase start
+   ```
+
+3. **Verify installation**
+   The output should show local endpoints including:
+   - API URL: http://127.0.0.1:54321
+   - Studio URL: http://127.0.0.1:54323
+   - JWT secret: super-secret-jwt-token-with-at-least-32-characters-long
+
+## Configuration
+
+1. **Environment variables**
+   Add these to your `.env.local` and `.env` file in `frontend-nextjs` and `server-deno` respectively:
+   ```
+   SUPABASE_URL=http://127.0.0.1:54321
+   SUPABASE_KEY=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
+   JWT_SECRET=super-secret-jwt-token-with-at-least-32-characters-long
+   ```
+
+## Tables chart
+View a live chart of the tables and their relationships [here](http://localhost:54323/project/default/database/schemas)
+
+<img src="tables.png" alt="Supabase Tables Chart" width="100%">
+
+
+## Tables
+1. `users` - user details are stored here
+2. `devices` - device details (mac address, device name, etc) are stored here
+3. `conversations` - conversation details (start time, end time, etc) are stored here
+4. `messages` - all conversations and transcripts are stored here
+5. `api_keys` - api keys are stored here (not used for local development)
+6. `languages` - all supported languages are stored here
+
+
+## Development Workflow
+
+1. Make schema changes in Supabase Studio (http://127.0.0.1:54323)
+2. Generate migrations: `supabase db diff -f <migration_name>`
+3. Apply to local database: `supabase migration up`
+4. Push changes to production when ready
+
+## Stopping Supabase
+
+```bash
+supabase stop
+```
+
+For more details, visit the [Supabase documentation](https://supabase.com/docs).