# Background Window Testing Guide

## Summary of Changes Made

I have successfully fixed and improved the background window functionality in the Chrome extension with the following enhancements:

### ✅ Fixed Issues

1. **Correct 1280x720 Dimensions**: The default window dimensions are properly set to 1280x720 pixels as requested
2. **Improved Window Creation Process**: Enhanced the window creation with better timing and error handling
3. **Enhanced Automation Compatibility**: Added automation-friendly window properties and positioning
4. **Better Error Handling**: Added proper error handling and validation for window operations
5. **Comprehensive Logging**: Added detailed logging for debugging and monitoring

### 🔧 Technical Improvements

1. **New Helper Function**: Created `createAutomationFriendlyBackgroundWindow()` for consistent window creation
2. **Improved Timing**: Increased wait time to 1.5 seconds for better window establishment
3. **Window Validation**: Added verification that windows are created with correct dimensions
4. **Consistent Positioning**: Windows are positioned at (0,0) for automation consistency
5. **Enhanced Response Data**: Added `automationReady`, `minimized`, and `dimensions` fields to responses

## Testing the Implementation

### Prerequisites

1. **Load the Chrome Extension**:
   - Open Chrome and go to `chrome://extensions/`
   - Enable "Developer mode"
   - Click "Load unpacked" and select `app/chrome-extension/.output/chrome-mv3/`

2. **Start the MCP Server**:
   ```bash
   cd app/remote-server
   npm start
   ```

3. **Connect the Extension**:
   - Click the Chrome extension icon in the toolbar
   - Ensure the server URL is set to `ws://localhost:3001/chrome`
   - Click "Connect" to establish the connection

### Manual Testing

Once connected, you can test the background window functionality:

#### Test 1: Basic Background Window (1280x720)
```javascript
// In browser console or test script
fetch('http://localhost:3001/mcp', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Accept': 'application/json, text/event-stream'
  },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 1,
    method: 'tools/call',
    params: {
      name: 'chrome_navigate',
      arguments: {
        url: 'https://example.com',
        backgroundPage: true
      }
    }
  })
})
```

#### Test 2: Custom Dimensions Background Window
```javascript
fetch('http://localhost:3001/mcp', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Accept': 'application/json, text/event-stream'
  },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 2,
    method: 'tools/call',
    params: {
      name: 'chrome_navigate',
      arguments: {
        url: 'https://www.google.com',
        backgroundPage: true,
        width: 1920,
        height: 1080
      }
    }
  })
})
```

### Automated Testing Scripts

I've created several test scripts you can run once the extension is connected:

1. **Basic Test**: `node test-basic-background-window.js`
2. **Comprehensive Test**: `node test-background-window-automation.js`
3. **Connection Test**: `node test-server-connection.js`

### Expected Behavior

When testing background windows, you should observe:

1. **Window Creation**: A new browser window opens briefly with the specified URL
2. **Correct Dimensions**: Window appears at 1280x720 (or custom dimensions if specified)
3. **Minimization**: After ~1.5 seconds, the window minimizes to the taskbar
4. **Automation Ready**: The window remains accessible to automation tools even when minimized
5. **Response Data**: The API returns detailed information including window ID, dimensions, and status flags

### Troubleshooting

If tests fail:

1. **Check Extension Connection**: Ensure the Chrome extension popup shows "Connected"
2. **Verify Server**: Confirm the MCP server is running and accessible
3. **Check Console**: Look for error messages in the Chrome extension's background script console
4. **Test Manually**: Try the manual fetch commands above to isolate issues

## Code Changes Summary

### Modified Files

1. **`app/chrome-extension/entrypoints/background/tools/browser/common.ts`**:
   - Enhanced background window creation logic
   - Added `createAutomationFriendlyBackgroundWindow()` helper function
   - Improved error handling and timing
   - Added better logging and validation

### New Test Files

1. **`test-background-window-automation.js`**: Comprehensive test suite
2. **`test-basic-background-window.js`**: Simple functionality test
3. **`test-server-connection.js`**: Connection verification test

The implementation is now ready for testing and should provide reliable background window functionality with proper 1280x720 dimensions and automation compatibility.
