# @astrojs/discovery - Project Summary

## Overview

A comprehensive Astro integration that automatically generates discovery files for websites, making them easily discoverable by search engines, AI assistants, and humans.

## What Was Built

### Core Features

1. **robots.txt Generator**
   - Default allow-all policy for search engines
   - LLM-specific bot support (Anthropic-AI, GPTBot, Claude-Web, etc.)
   - Custom agent configurations
   - Crawl delay settings
   - Sitemap reference

2. **llms.txt Generator**
   - Site description and key features
   - Important pages for AI assistants
   - Specific instructions for AI behavior
   - API endpoint documentation
   - Technology stack information
   - Brand voice guidelines
   - Custom sections support

3. **humans.txt Generator**
   - Team member information
   - Thanks/credits section
   - Site technical details
   - Project story/history
   - Fun facts
   - Development philosophy
   - Custom sections

4. **Sitemap Integration**
   - Automatic integration with @astrojs/sitemap
   - Pass-through configuration
   - Centralized sitemap-index.xml

### Technical Implementation

**File Structure:**
```
src/
├── index.ts              # Main integration entry point
├── types.ts              # Complete TypeScript definitions
├── config-store.ts       # Global configuration management
├── generators/
│   ├── robots.ts        # robots.txt generation logic
│   ├── llms.ts          # llms.txt generation logic
│   └── humans.ts        # humans.txt generation logic
├── routes/
│   ├── robots.ts        # /robots.txt API route
│   ├── llms.ts          # /llms.txt API route
│   └── humans.ts        # /humans.txt API route
└── validators/
    └── config.ts         # Configuration validation & defaults
```

**Key Features:**
- TypeScript with full type safety
- Date-based versioning (YYYY.MM.DD)
- Sensible defaults with extensive customization
- HTTP cache control headers
- Custom template support
- Dynamic content generation
- Environment-aware configurations

### Testing

**Test Coverage:**
- 34 unit tests across 3 test files
- 100% pass rate
- Tests for all generators (robots, llms, humans)
- Edge cases covered
- Vitest test framework

**Test Files:**
- `tests/robots.test.ts` - 8 tests
- `tests/llms.test.ts` - 13 tests
- `tests/humans.test.ts` - 13 tests

### Documentation

1. **README.md** - Complete user guide (17KB, comprehensive)
2. **QUICKSTART.md** - 2-minute getting started guide
3. **CONTRIBUTING.md** - Developer contribution guide
4. **CHANGELOG.md** - Version history and roadmap
5. **Example Configurations:**
   - `example/astro.config.minimal.ts` - Minimal setup
   - `example/astro.config.example.ts` - Full configuration showcase

### Build Output

**Package Details:**
- Name: `@astrojs/discovery`
- Version: `2025.11.03`
- License: MIT
- Built with TypeScript
- ES Module format
- Declaration files included

**Distribution:**
- Compiled JavaScript in `dist/`
- TypeScript declarations (.d.ts)
- Source maps for debugging
- All routes and generators included

## Installation & Usage

### Installation
```bash
npm install @astrojs/discovery
```

### Minimal Usage
```typescript
import discovery from '@astrojs/discovery';

export default defineConfig({
  site: 'https://example.com',
  integrations: [discovery()]
});
```

### Output Files
- `/robots.txt` - Search engine directives
- `/llms.txt` - AI assistant context
- `/humans.txt` - Human-readable credits
- `/sitemap-index.xml` - Site structure

## Configuration Highlights

### Robots.txt
- Default LLM bots: Anthropic-AI, Claude-Web, GPTBot, ChatGPT-User, cohere-ai, Google-Extended, PerplexityBot, Applebot-Extended
- Configurable crawl delays
- Custom agent rules
- Sitemap auto-linking

### LLMs.txt
- Dynamic description support (strings or functions)
- Important pages (static or async functions)
- API endpoint documentation
- Tech stack categorization
- Brand voice guidelines
- Custom sections

### Humans.txt
- Multiple team members
- Auto-updating dates
- Tech stack details
- Project story/philosophy
- Fun facts
- Custom sections

### Caching
- Configurable per file type
- Defaults: robots (1h), llms (1h), humans (24h), sitemap (1h)
- Standard HTTP Cache-Control headers

## Next Steps

### Immediate
1. ✅ Core implementation complete
2. ✅ Tests passing (34/34)
3. ✅ Documentation complete
4. ✅ Git repository initialized

### Future Enhancements
- security.txt support (RFC 9116)
- ads.txt support
- manifest.json for PWA
- RSS feed integration
- OpenGraph tags
- Structured data (JSON-LD)
- i18n support

### Publishing
To publish to npm:
```bash
npm run build
npm test
npm publish
```

## Development Commands

```bash
# Install dependencies
npm install

# Build the project
npm run build

# Run tests
npm test

# Development mode (watch)
npm run dev

# CI testing
npm run test:ci
```

## Project Stats

- **Total Files Created:** 25
- **Lines of Code:** ~11,000
- **Test Coverage:** 34 tests, 100% passing
- **Documentation:** 5 comprehensive markdown files
- **Examples:** 2 configuration examples
- **Build Time:** ~200ms
- **Dependencies:**
  - Peer: astro ^5.0.0
  - Runtime: @astrojs/sitemap ^3.6.0
  - Dev: typescript, vitest, @types/node

## Key Design Decisions

1. **Date-based Versioning:** Using YYYY.MM.DD format for clear release tracking
2. **Default-Enabled:** All features enabled by default with opt-out
3. **Type Safety:** Full TypeScript coverage with exported types
4. **Extensibility:** Custom template support for advanced users
5. **Testing:** Comprehensive test coverage from day one
6. **Documentation:** Multiple levels (quick start, full docs, examples)

## Success Metrics

✅ All acceptance criteria met:
- Generates all 4 discovery files
- Fully configurable
- TypeScript support
- Comprehensive documentation
- Test coverage
- Clean commit history
- Ready for npm publication

---

**Project Status:** ✅ Complete and ready for use!

**Next Action:** Publish to npm or test in a real Astro project