|
| 1 | +# Browser Automation |
| 2 | + |
| 3 | +## Overview |
| 4 | + |
| 5 | +This document describes the browser automation capabilities implemented in the project, combining both the original planning and the current implementation status. |
| 6 | + |
| 7 | +## Key Features |
| 8 | + |
| 9 | +- Browser session management |
| 10 | +- Page control and interaction |
| 11 | +- Screenshot capture |
| 12 | +- Resource cleanup and management |
| 13 | +- Error handling |
| 14 | +- Type-safe API |
| 15 | + |
| 16 | +## Architecture |
| 17 | + |
| 18 | +The browser automation system is implemented as a modular system with the following core components: |
| 19 | + |
| 20 | +### BrowserManager |
| 21 | +Handles browser session lifecycle, including: |
| 22 | +- Session creation and cleanup |
| 23 | +- Context management |
| 24 | +- Resource optimization |
| 25 | + |
| 26 | +### PageController |
| 27 | +Manages page interactions: |
| 28 | +- Navigation |
| 29 | +- Element selection and interaction |
| 30 | +- State management |
| 31 | +- Event handling |
| 32 | + |
| 33 | +### ScreenshotManager |
| 34 | +Provides screenshot capabilities: |
| 35 | +- Full page captures |
| 36 | +- Element-specific captures |
| 37 | +- Screenshot storage and management |
| 38 | + |
| 39 | +## Installation & Setup |
| 40 | + |
| 41 | +```bash |
| 42 | +npm install @mycoder/browser-automation |
| 43 | +``` |
| 44 | + |
| 45 | +### Configuration |
| 46 | + |
| 47 | +Basic configuration example: |
| 48 | +```typescript |
| 49 | +import { BrowserAutomation } from '@mycoder/browser-automation'; |
| 50 | + |
| 51 | +const browser = new BrowserAutomation({ |
| 52 | + headless: true, |
| 53 | + defaultViewport: { width: 1920, height: 1080 } |
| 54 | +}); |
| 55 | +``` |
| 56 | + |
| 57 | +## Usage Examples |
| 58 | + |
| 59 | +### Basic Navigation |
| 60 | +```typescript |
| 61 | +const page = await browser.newPage(); |
| 62 | +await page.navigate('https://example.com'); |
| 63 | +await page.waitForSelector('.main-content'); |
| 64 | +``` |
| 65 | + |
| 66 | +### Interacting with Elements |
| 67 | +```typescript |
| 68 | +await page.click('#submit-button'); |
| 69 | +await page.type('#search-input', 'search term'); |
| 70 | +``` |
| 71 | + |
| 72 | +### Taking Screenshots |
| 73 | +```typescript |
| 74 | +await page.screenshot({ |
| 75 | + path: './screenshot.png', |
| 76 | + fullPage: true |
| 77 | +}); |
| 78 | +``` |
| 79 | + |
| 80 | +## Error Handling |
| 81 | + |
| 82 | +The system implements comprehensive error handling: |
| 83 | + |
| 84 | +- Browser-specific errors are wrapped in custom error types |
| 85 | +- Automatic retry mechanisms for flaky operations |
| 86 | +- Resource cleanup on failure |
| 87 | +- Detailed error messages and stack traces |
| 88 | + |
| 89 | +## Resource Management |
| 90 | + |
| 91 | +Resources are managed automatically: |
| 92 | + |
| 93 | +- Browser sessions are cleaned up when no longer needed |
| 94 | +- Memory usage is optimized |
| 95 | +- Concurrent sessions are managed efficiently |
| 96 | +- Automatic page context cleanup |
| 97 | + |
| 98 | +## Testing & Debugging |
| 99 | + |
| 100 | +### Running Tests |
| 101 | +```bash |
| 102 | +npm test |
| 103 | +``` |
| 104 | + |
| 105 | +### Debugging |
| 106 | + |
| 107 | +Debug logs can be enabled via environment variables: |
| 108 | +```bash |
| 109 | +DEBUG=browser-automation:* npm test |
| 110 | +``` |
| 111 | + |
| 112 | +## API Reference |
| 113 | + |
| 114 | +### BrowserAutomation |
| 115 | +Main class providing browser automation capabilities. |
| 116 | + |
| 117 | +#### Methods |
| 118 | +- `newPage()`: Creates a new page session |
| 119 | +- `close()`: Closes all browser sessions |
| 120 | +- `screenshot()`: Captures screenshots |
| 121 | +- `evaluate()`: Evaluates JavaScript in the page context |
| 122 | + |
| 123 | +### PageController |
| 124 | +Handles page-specific operations. |
| 125 | + |
| 126 | +#### Methods |
| 127 | +- `navigate(url: string)`: Navigates to URL |
| 128 | +- `click(selector: string)`: Clicks element |
| 129 | +- `type(selector: string, text: string)`: Types text |
| 130 | +- `waitForSelector(selector: string)`: Waits for element |
| 131 | + |
| 132 | +### ScreenshotManager |
| 133 | +Manages screenshot operations. |
| 134 | + |
| 135 | +#### Methods |
| 136 | +- `capture(options: ScreenshotOptions)`: Takes screenshot |
| 137 | +- `saveToFile(path: string)`: Saves screenshot to file |
| 138 | + |
| 139 | +## Future Enhancements |
| 140 | + |
| 141 | +The following features are planned for future releases: |
| 142 | + |
| 143 | +- Network monitoring capabilities |
| 144 | +- Video recording support |
| 145 | +- Trace viewer integration |
| 146 | +- Extended cross-browser support |
| 147 | +- Enhanced selector handling module |
| 148 | + |
| 149 | +## Migration Guide |
| 150 | + |
| 151 | +When upgrading from previous versions: |
| 152 | + |
| 153 | +1. Update import paths to use new structure |
| 154 | +2. Replace deprecated methods with new alternatives |
| 155 | +3. Update configuration objects to match new schema |
| 156 | +4. Test thoroughly after migration |
| 157 | + |
| 158 | +## Best Practices |
| 159 | + |
| 160 | +1. Always clean up resources: |
| 161 | +```typescript |
| 162 | +try { |
| 163 | + const browser = new BrowserAutomation(); |
| 164 | + // ... operations |
| 165 | +} finally { |
| 166 | + await browser.close(); |
| 167 | +} |
| 168 | +``` |
| 169 | + |
| 170 | +2. Use typed selectors: |
| 171 | +```typescript |
| 172 | +const selector: SelectorOptions = { |
| 173 | + type: 'css', |
| 174 | + value: '.main-content' |
| 175 | +}; |
| 176 | +``` |
| 177 | + |
| 178 | +3. Implement proper error handling: |
| 179 | +```typescript |
| 180 | +try { |
| 181 | + await page.click('#button'); |
| 182 | +} catch (error) { |
| 183 | + if (error instanceof ElementNotFoundError) { |
| 184 | + // Handle missing element |
| 185 | + } |
| 186 | + throw error; |
| 187 | +} |
| 188 | +``` |
| 189 | + |
| 190 | +## Contributing |
| 191 | + |
| 192 | +Please see CONTRIBUTING.md for guidelines on contributing to this project. |
| 193 | + |
| 194 | +## License |
| 195 | + |
| 196 | +This project is licensed under the MIT License - see the LICENSE file for details. |
0 commit comments