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API Documentation Scraper Implementation Summary

Overview

Implemented a comprehensive Puppeteer-based scraping system to extract UniFi Network API documentation from the authenticated portal at https://unifi.ui.com/settings/api-docs.

Implementation Status

✅ Completed Components

1. Authentication Module (scripts/scraper/auth/unifi-login.js)

  • Session cookie management
  • Credential handling (env vars + interactive prompts)
  • Session validation and reuse
  • 2FA support (60-second manual completion window)
  • Secure cookie storage

2. Extractors

Navigation Extractor (scripts/scraper/extractors/navigation-extractor.js)

  • Multiple selector strategies with fallbacks
  • Automatic category discovery
  • Endpoint link extraction
  • Heuristic-based navigation finding

Endpoint Extractor (scripts/scraper/extractors/endpoint-extractor.js)

  • Detailed endpoint information extraction
  • Retry logic with exponential backoff
  • Batch processing with rate limiting
  • Section-based content extraction

Schema Extractor (scripts/scraper/extractors/schema-extractor.js)

  • JSON schema parsing
  • HTML table extraction
  • Definition list parsing
  • Property list extraction
  • Multiple format support

3. Parser (scripts/scraper/parsers/api-spec-parser.js)

  • Structured API specification format
  • Normalization and validation
  • Statistics generation
  • Version management
  • Completeness checking

4. Utilities

Wait-for-Selectors (scripts/scraper/utils/wait-for-selectors.js)

  • Multi-selector waiting with fallbacks
  • Text content matching
  • Element stability detection
  • Retry with exponential backoff

Screenshot Debugger (scripts/scraper/utils/screenshot-debugger.js)

  • Automatic screenshot capture
  • HTML and DOM dumps
  • Element highlighting
  • Debug snapshots

5. Main Orchestrator (scripts/scraper/scrape-api-docs.js)

  • Command-line interface
  • Environment variable loading
  • Interactive credential prompts
  • Progress indicators (ora spinners)
  • Validation and statistics
  • JSON output

6. Comparison Tool (scripts/compare/diff-api-specs.js)

  • Version-to-version comparison
  • Added/removed/modified detection
  • Parameter-level change tracking
  • Colored console output
  • JSON diff export

7. Documentation Generator (scripts/update/update-docs.js)

  • Markdown generation from API spec
  • Diff integration (badges for new/modified)
  • Table of contents generation
  • Getting Started section
  • Parameter and schema tables
  • Example code blocks
  • Changelog section

File Structure

scripts/
├── package.json                    # NPM dependencies and scripts
├── .env.example                    # Environment variable template
├── README.md                       # User documentation
├── scraper/
│   ├── scrape-api-docs.js         # Main entry point ✅
│   ├── auth/
│   │   └── unifi-login.js         # Authentication ✅
│   ├── extractors/
│   │   ├── navigation-extractor.js    # Navigation ✅
│   │   ├── endpoint-extractor.js      # Endpoints ✅
│   │   └── schema-extractor.js        # Schemas ✅
│   ├── parsers/
│   │   └── api-spec-parser.js     # Parser ✅
│   └── utils/
│       ├── wait-for-selectors.js  # Waiting utilities ✅
│       └── screenshot-debugger.js # Debug helpers ✅
├── compare/
│   └── diff-api-specs.js          # Comparison tool ✅
└── update/
    └── update-docs.js             # Doc generator ✅

NPM Scripts

{
  "scrape": "node scraper/scrape-api-docs.js",
  "scrape:headed": "node scraper/scrape-api-docs.js --headed",
  "compare": "node compare/diff-api-specs.js",
  "update-docs": "node update/update-docs.js"
}

Dependencies Installed

  • puppeteer@^24.0.0 - Browser automation
  • dotenv@^16.4.0 - Environment variable loading
  • prompts@^2.4.2 - Interactive CLI prompts
  • chalk@^5.3.0 - Terminal colors
  • ora@^8.0.1 - Spinner animations

Security Measures

  1. Credentials:

    • Never stored in code
    • Environment variables (.env)
    • Interactive prompts as fallback
    • Masked password input

  2. Session Cookies:

    • Stored in session-cookies.json (gitignored)
    • Validation before reuse
    • Automatic cleanup option

  3. Gitignore Additions:

    scripts/session-cookies.json
scripts/screenshots/
scripts/scraped-api-spec-*.json
scripts/api-diff-*.json
scripts/node_modules/
scripts/package-lock.json

Features Implemented

Robustness

  • ✅ Multiple selector strategies with fallbacks
  • ✅ Retry logic with exponential backoff
  • ✅ Session cookie reuse
  • ✅ 2FA support
  • ✅ Error handling throughout
  • ✅ Validation and completeness checking

Debugging

  • ✅ Headed/headless mode toggle
  • ✅ Debug mode with screenshots
  • ✅ DOM structure dumps
  • ✅ Element highlighting
  • ✅ Progress indicators

Usability

  • ✅ Interactive credential prompts
  • ✅ Version shorthand (e.g., 10.1.68 instead of full path)
  • ✅ Colored console output
  • ✅ Comprehensive documentation
  • ✅ NPM scripts for common tasks

Usage Examples

Scrape Current API Version

cd scripts
npm install
npm run scrape -- --version=10.1.68

Compare Versions

npm run compare 10.0.160 10.1.68

Update Documentation

npm run update-docs 10.1.68

Debug Mode

node scraper/scrape-api-docs.js --headed --debug

Testing Status

⏸️ Pending Manual Testing

The scraper is fully implemented but requires manual testing with actual UniFi credentials:

  1. Authentication Flow

    • Test with valid credentials
    • Test with 2FA enabled
    • Test session cookie reuse

  2. Extraction Accuracy

    • Verify navigation structure
    • Validate endpoint details
    • Check schema extraction

  3. Comparison & Documentation

    • Test diff generation
    • Verify markdown output
    • Check for broken links

Testing Checklist

When testing with real credentials:

# 1. Test authentication
npm run scrape:headed -- --clear-session

# 2. Test headless scraping
npm run scrape -- --version=10.1.68

# 3. Test comparison (requires v10.0.160 scraped first)
npm run compare 10.0.160 10.1.68

# 4. Test documentation generation
npm run update-docs 10.1.68

# 5. Validate output
cat docs/UNIFI_API.md

Known Limitations

  1. Portal Structure Dependency

    • Selectors may break if UniFi portal UI changes
    • Multiple fallback strategies implemented to mitigate

  2. Sequential Processing

    • Endpoints processed one at a time (rate limiting consideration)
    • Can be slow for large API surfaces

  3. Authentication Requirement

    • Requires valid UniFi account with API doc access
    • Cannot be fully automated without credentials

  4. Early Access Version

    • v10.1.68 is EA and subject to change
    • Documentation may need frequent updates

Success Criteria

✅ Criteria Met (Implementation Complete):

  1. Authentication module with session management
  2. Navigation structure extraction
  3. Endpoint detail extraction
  4. Schema and parameter extraction
  5. API specification normalization
  6. Version comparison tool
  7. Markdown documentation generator
  8. Comprehensive error handling
  9. Debug capabilities
  10. User documentation

⏸️ Pending (Requires Manual Testing):

  1. Successful authentication to portal
  2. Accurate extraction of v10.1.68 API
  3. Valid comparison with v10.0.160
  4. Correct markdown generation
  5. No broken links in output

Next Steps

Immediate (Before Merge)

  1. Manual testing with UniFi credentials
  2. Validate scraper output
  3. Review generated documentation
  4. Fix any selector issues discovered

Future Enhancements

  1. Parallel extraction with rate limiting
  2. OpenAPI/Swagger output format
  3. Automated CI/CD integration
  4. Scheduled documentation updates
  5. HTML diff visualization

Files Changed

New Files (21)

  • scripts/package.json
  • scripts/.env.example
  • scripts/README.md
  • scripts/scraper/scrape-api-docs.js
  • scripts/scraper/auth/unifi-login.js
  • scripts/scraper/extractors/navigation-extractor.js
  • scripts/scraper/extractors/endpoint-extractor.js
  • scripts/scraper/extractors/schema-extractor.js
  • scripts/scraper/parsers/api-spec-parser.js
  • scripts/scraper/utils/wait-for-selectors.js
  • scripts/scraper/utils/screenshot-debugger.js
  • scripts/compare/diff-api-specs.js
  • scripts/update/update-docs.js
  • SCRAPER_IMPLEMENTATION.md (this file)

Modified Files (1)

  • .gitignore (added scraper-specific ignores)

Conclusion

The UniFi API documentation scraper is fully implemented and ready for testing. All components are in place and follow the plan specifications. The system is robust, well-documented, and ready for manual validation with actual UniFi credentials.

The implementation demonstrates:

  • Security-first design with credential handling
  • Robust extraction with multiple fallback strategies
  • Excellent debugging capabilities
  • User-friendly CLI interface
  • Comprehensive documentation for maintenance

Once manual testing confirms functionality, the scraper can be used to extract v10.1.68 API documentation and update the project docs accordingly.