Chat App Workshop with Antigravity IDE

Welcome to the Chat App Workshop! In this session, you'll be using Google's Antigravity IDE to build a real-time chat application with a Go backend and a Flutter frontend.

Prerequisites

• A working Google Cloud account
• Antigravity IDE installed.
• Flutter SDK installed and configured.
• Go installed.
• Docker and Docker Compose installed.
• Android Studio (optional, see ANDROID.md for alternatives)

Getting Started

1. Backend & Redis Setup

The project uses Docker Compose to run the Go backend and a Redis instance simultaneously.

1. From the project's root directory, start the infrastructure:

   docker compose up --build -d

   The backend server will start and become available at http://localhost:8080. (Optional: The backend is configured to respect PORT and REDIS_URL environment variables if you deploy or run it manually).

2. Frontend Setup

1. Navigate to the frontend directory.
2. In your environment or configuration, set BACKEND_URL to point to your server (e.g., http://localhost:8080 for local testing).
3. Fetch dependencies:

   flutter pub get

4. Run the app:

   flutter run -d chrome

   (Or use your preferred device/emulator)

Vibe Coding with Skills

The .agents/skills directory contains specialized instructions for Antigravity. You can use these to accelerate your development:

• "Refresh the vibe": Ask Antigravity to improve the Flutter UI.
• "Harden the backend": Ask Antigravity to add security and robustness to your Go server.
• Describe a new feature: Use natural language to ask for new capabilities like "Add message emojis".

Workshop Goals

1. Explore: Understand the boilerplate code.
2. Experiment: Use Antigravity to modify the UI and backend
3. Build: Make the chat multi-user. The boilerplate code doesn't support that.
4. Enhance: Create your own "skills" in skills.md to automate repetitive tasks or complex logic.
5. Improve: Make messages persist somewhere better than in the backend memory - []Message{}.
6. Deploy: Deploy the app to a cloud platform.
7. Secure: Add authentication and authorization to the app
8. Expand: Make an Android app build!

Happy Coding with Google Antigravity IDE!

Antigravity IDE