# Story 3.1 Implementation Summary

## Overview
Implemented URL generation and site assignment for batch content generation, including full auto-creation capabilities and priority-based site assignment.

## What Was Implemented

### 1. Database Schema Changes
- **Modified**: `src/database/models.py`
  - Made `custom_hostname` nullable in `SiteDeployment` model
  - Added unique constraint to `pull_zone_bcdn_hostname`
  - Updated `__repr__` to handle both custom and bcdn hostnames

- **Migration Script**: `scripts/migrate_story_3.1.sql`
  - SQL script to update existing databases
  - Run this on your dev database before testing

### 2. Repository Layer Updates
- **Modified**: `src/database/interfaces.py`
  - Changed `custom_hostname` to optional parameter in `create()` signature
  - Added `get_by_bcdn_hostname()` method signature
  - Updated `exists()` to check both hostname types

- **Modified**: `src/database/repositories.py`
  - Made `custom_hostname` parameter optional with default `None`
  - Implemented `get_by_bcdn_hostname()` method
  - Updated `exists()` to query both custom and bcdn hostnames

### 3. Template Service Update
- **Modified**: `src/templating/service.py`
  - Line 92: Changed to `hostname = site_deployment.custom_hostname or site_deployment.pull_zone_bcdn_hostname`
  - Now handles sites with only bcdn hostnames

### 4. CLI Updates
- **Modified**: `src/cli/commands.py`
  - Updated `sync-sites` command to import sites without custom domains
  - Removed filter that skipped bcdn-only sites
  - Now imports all bunny.net sites (with or without custom domains)

### 5. Site Provisioning Module (NEW)
- **Created**: `src/generation/site_provisioning.py`
  - `generate_random_suffix()`: Creates random 4-char suffixes
  - `slugify_keyword()`: Converts keywords to URL-safe slugs
  - `create_bunnynet_site()`: Creates Storage Zone + Pull Zone via API
  - `provision_keyword_sites()`: Pre-creates sites for specific keywords
  - `create_generic_sites()`: Creates generic sites on-demand

### 6. URL Generator Module (NEW)
- **Created**: `src/generation/url_generator.py`
  - `generate_slug()`: Converts article titles to URL-safe slugs
  - `generate_urls_for_batch()`: Generates complete URLs for all articles in batch
  - Handles custom domains and bcdn hostnames
  - Returns full URL mappings with metadata

### 7. Job Config Extensions
- **Modified**: `src/generation/job_config.py`
  - Added `tier1_preferred_sites: Optional[List[str]]` field
  - Added `auto_create_sites: bool` field (default: False)
  - Added `create_sites_for_keywords: Optional[List[Dict]]` field
  - Full validation for all new fields

### 8. Site Assignment Module (NEW)
- **Created**: `src/generation/site_assignment.py`
  - `assign_sites_to_batch()`: Main assignment function with full priority system
  - `_get_keyword_sites()`: Helper to match sites by keyword
  - **Priority system**:
    - Tier1: preferred sites → keyword sites → random
    - Tier2+: keyword sites → random
  - Auto-creates sites when pool is insufficient (if enabled)
  - Prevents duplicate assignments within same batch

### 9. Comprehensive Tests
- **Created**: `tests/unit/test_url_generator.py` - URL generation tests
- **Created**: `tests/unit/test_site_provisioning.py` - Site creation tests
- **Created**: `tests/unit/test_site_assignment.py` - Assignment logic tests
- **Created**: `tests/unit/test_job_config_extensions.py` - Config parsing tests
- **Created**: `tests/integration/test_story_3_1_integration.py` - Full workflow tests

### 10. Example Job Config
- **Created**: `jobs/example_story_3.1_full_features.json`
  - Demonstrates all new features
  - Ready-to-use template

## How to Use

### Step 1: Migrate Your Database
Run the migration script on your development database:

```sql
-- From scripts/migrate_story_3.1.sql
ALTER TABLE site_deployments MODIFY COLUMN custom_hostname VARCHAR(255) NULL;
ALTER TABLE site_deployments ADD CONSTRAINT uq_pull_zone_bcdn_hostname UNIQUE (pull_zone_bcdn_hostname);
```

### Step 2: Sync Existing Bunny.net Sites
Import your 400+ existing bunny.net buckets:

```bash
uv run python main.py sync-sites --admin-user your_admin --dry-run
```

Review the output, then run without `--dry-run` to import.

### Step 3: Create a Job Config
Use the new fields in your job configuration:

```json
{
  "jobs": [{
    "project_id": 1,
    "tiers": {
      "tier1": {"count": 10}
    },
    "tier1_preferred_sites": ["www.premium.com"],
    "auto_create_sites": true,
    "create_sites_for_keywords": [
      {"keyword": "engine repair", "count": 3}
    ]
  }]
}
```

### Step 4: Use in Your Workflow
In your content generation workflow:

```python
from src.generation.site_assignment import assign_sites_to_batch
from src.generation.url_generator import generate_urls_for_batch

# After content generation, assign sites
assign_sites_to_batch(
    content_records=generated_articles,
    job=job_config,
    site_repo=site_repository,
    bunny_client=bunny_client,
    project_keyword=project.main_keyword
)

# Generate URLs
urls = generate_urls_for_batch(
    content_records=generated_articles,
    site_repo=site_repository
)

# urls is a list of:
# [{
#   "content_id": 1,
#   "title": "How to Fix Your Engine",
#   "url": "https://www.example.com/how-to-fix-your-engine.html",
#   "tier": "tier1",
#   "slug": "how-to-fix-your-engine",
#   "hostname": "www.example.com"
# }, ...]
```

## Site Assignment Priority Logic

### For Tier1 Articles:
1. **Preferred Sites** (from `tier1_preferred_sites`) - if specified
2. **Keyword Sites** (matching article keyword in site name)
3. **Random** from available pool

### For Tier2+ Articles:
1. **Keyword Sites** (matching article keyword in site name)
2. **Random** from available pool

### Auto-Creation:
If `auto_create_sites: true` and pool is insufficient:
- Creates minimum number of generic sites needed
- Uses project main keyword in site names
- Creates via bunny.net API (Storage Zone + Pull Zone)

## URL Structure

### With Custom Domain:
```
https://www.example.com/how-to-fix-your-engine.html
```

### With Bunny.net CDN Only:
```
https://mysite123.b-cdn.net/how-to-fix-your-engine.html
```

## Slug Generation Rules
- Lowercase
- Replace spaces with hyphens
- Remove special characters
- Max 100 characters
- Fallback: `article-{content_id}` if empty

## Testing

Run the tests:

```bash
# Unit tests
uv run pytest tests/unit/test_url_generator.py
uv run pytest tests/unit/test_site_provisioning.py
uv run pytest tests/unit/test_site_assignment.py
uv run pytest tests/unit/test_job_config_extensions.py

# Integration tests
uv run pytest tests/integration/test_story_3_1_integration.py

# All Story 3.1 tests
uv run pytest tests/ -k "story_3_1 or url_generator or site_provisioning or site_assignment or job_config_extensions"
```

## Key Features

### Simple Over Complex
- No fuzzy keyword matching (as requested)
- Straightforward priority system
- Clear error messages
- Minimal dependencies

### Full Auto-Creation
- Pre-create sites for specific keywords
- Auto-create generic sites when needed
- All sites use bunny.net API

### Full Priority System
- Tier1 preferred sites
- Keyword-based matching
- Random assignment fallback

### Flexible Hostnames
- Supports custom domains
- Supports bcdn-only sites
- Automatically chooses correct hostname

## Production Deployment

When moving to production:
1. The model changes will automatically apply (SQLAlchemy will create tables correctly)
2. No additional migration scripts needed
3. Just ensure your production `.env` has `BUNNY_ACCOUNT_API_KEY` set
4. Run `sync-sites` to import existing bunny.net infrastructure

## Files Changed/Created

### Modified (8 files):
- `src/database/models.py`
- `src/database/interfaces.py`
- `src/database/repositories.py`
- `src/templating/service.py`
- `src/cli/commands.py`
- `src/generation/job_config.py`

### Created (9 files):
- `scripts/migrate_story_3.1.sql`
- `src/generation/site_provisioning.py`
- `src/generation/url_generator.py`
- `src/generation/site_assignment.py`
- `tests/unit/test_url_generator.py`
- `tests/unit/test_site_provisioning.py`
- `tests/unit/test_site_assignment.py`
- `tests/unit/test_job_config_extensions.py`
- `tests/integration/test_story_3_1_integration.py`
- `jobs/example_story_3.1_full_features.json`
- `STORY_3.1_IMPLEMENTATION_SUMMARY.md`

## Total Effort
Completed all 10 tasks from the story specification.