# Desktop Runtime Configuration

The BaMoRT desktop app now uses **runtime configuration** for the API port, meaning you can change the port in the `.env` file without rebuilding the app.

## How It Works

### Backend (Go)
- **[desktop/main.go](desktop/main.go)**: The `App.GetAPIBaseURL()` method reads the configured port from `config.Cfg` and returns the full API URL
- This method is bound to the frontend via Wails, making it callable from JavaScript

### Frontend (Vue/JS)
- **[frontend/src/utils/config.js](frontend/src/utils/config.js)**: Detects if running in Wails and calls the Go backend to get the API URL at runtime
- **[frontend/src/utils/api.js](frontend/src/utils/api.js)**: Uses the dynamic config instead of a hardcoded VITE_API_URL
- The API URL is cached after first retrieval for performance

### Build Process
- **[frontend/package.json](frontend/package.json)**: The `build:desktop` script no longer hardcodes `VITE_API_URL`
- The frontend bundle is now port-agnostic

## Usage

### Change the API Port

1. Edit `desktop/.env`:
   ```env
   API_PORT=8185  # Change to any port you want
   ```

2. Run the app - no rebuild needed!
   ```bash
   ./desktop/build/bin/bamort
   ```

The frontend will automatically connect to the configured port.

### Environment Detection

The config system automatically detects the environment:

- **Desktop (Wails)**: Calls `window.go.main.App.GetAPIBaseURL()` to get the URL from Go backend
- **Web (Development)**: Uses `import.meta.env.VITE_API_URL` from Vite
- **Web (Production)**: Defaults to `https://bamort-api.trokan.de`

## Fallback Behavior

If the desktop app can't reach the Go backend (shouldn't happen), it falls back to `http://localhost:8185`.

## Benefits

✅ Change API port without rebuilding  
✅ Faster iteration during development  
✅ Same binary works with different configurations  
✅ Cleaner separation of config from code  

## Technical Details

**Request Flow:**
1. Frontend makes API request
2. Axios interceptor checks if `baseURL` is set
3. If not set, calls `getAPIBaseURL()` from config.js
4. Config.js detects Wails environment via `window.go`
5. Calls Go backend's `GetAPIBaseURL()` method
6. Caches the result for subsequent requests
7. Request proceeds with correct baseURL