# Phase 5 Implementation Summary

## Overview
Phase 5 implementation adds Planner, Linker, and Optimizer module hooks to the WordPress bridge plugin.

## Implemented Features

### 5.1 Planner Briefs Display & Refresh Actions ✅

**Files Created:**
- `admin/class-post-meta-boxes.php` - Meta boxes for post editor
- `admin/assets/js/post-editor.js` - JavaScript for AJAX interactions

**Features:**
- **Planner Brief Meta Box** in post editor sidebar
  - Displays cached brief with title, content, outline, keywords, and tone
  - Shows cache timestamp
  - "Fetch Brief" button to load from IGNY8 API
  - "Request Refresh" button to trigger Planner refresh

**API Endpoints Used:**
- `GET /planner/tasks/{id}/brief/` - Fetch Planner brief (with fallback to Writer brief)
- `POST /planner/tasks/{id}/refresh/` - Request Planner task refresh

**Meta Fields Added:**
- `_igny8_task_brief` - Cached brief data
- `_igny8_brief_cached_at` - Brief cache timestamp

**AJAX Handlers:**
- `igny8_fetch_planner_brief` - Fetches and caches brief
- `igny8_refresh_planner_task` - Requests Planner refresh

---

### 5.2 Link Graph Export ✅

**Files Created:**
- `data/link-graph.php` - Link graph extraction and export

**Features:**
- **Link Extraction** from post content
  - Extracts all internal links (anchor tags)
  - Captures source URL, target URL, and anchor text
  - Filters to only internal links (same domain)
  - Normalizes URLs for consistency

- **Link Graph Collection**
  - Processes all enabled post types
  - Extracts links from published posts
  - Configurable batch processing (max 1000 posts per run)

- **Automatic Export During Site Scans**
  - Integrated into `igny8_collect_site_data()`
  - Included in site data payload
  - Also sent separately to Linker module endpoint

**API Endpoints Used:**
- `POST /linker/link-map/` - Send link graph to Linker module

**Functions:**
- `igny8_extract_post_links($post_id)` - Extract links from single post
- `igny8_extract_link_graph($post_ids)` - Extract links from multiple posts
- `igny8_send_link_graph_to_igny8($site_id, $link_graph)` - Send to IGNY8 API

**Integration Points:**
- `igny8_collect_site_data()` - Includes link graph in site data
- `igny8_send_site_data_to_igny8()` - Sends link graph after site import
- `igny8_perform_full_site_scan()` - Sends link graph during full scans

**Options Stored:**
- `igny8_last_link_graph_sync` - Last sync timestamp
- `igny8_last_link_graph_count` - Number of links sent

---

### 5.4 Optimizer Triggers ✅

**Features:**
- **Optimizer Meta Box** in post editor sidebar
  - Displays current optimizer job ID and status
  - "Request Optimization" button to create new job
  - "Check Status" button to fetch latest job status
  - Shows score changes and recommendations when available

**API Endpoints Used:**
- `POST /optimizer/jobs/` - Create optimizer job
- `GET /optimizer/jobs/{id}/` - Get optimizer job status

**Meta Fields Added:**
- `_igny8_optimizer_job_id` - Optimizer job ID
- `_igny8_optimizer_status` - Job status (pending, processing, completed, failed)
- `_igny8_optimizer_score_changes` - Score changes from optimization
- `_igny8_optimizer_recommendations` - Optimization recommendations
- `_igny8_optimizer_job_created_at` - Job creation timestamp

**AJAX Handlers:**
- `igny8_create_optimizer_job` - Creates new optimizer job
- `igny8_get_optimizer_status` - Fetches job status and updates meta

**Job Parameters:**
- `post_id` - WordPress post ID
- `task_id` - IGNY8 task ID
- `job_type` - Type of job (default: 'audit')
- `priority` - Job priority (default: 'normal')

---

## Module Toggle Support

All Phase 5 features respect the module toggle settings:
- **Planner** module must be enabled for brief fetching/refresh
- **Linker** module must be enabled for link graph export
- **Optimizer** module must be enabled for optimizer jobs

Features also check `igny8_is_connection_enabled()` to ensure sync operations are active.

---

## UI/UX Features

### Post Editor Meta Boxes
- Clean, organized display in sidebar
- Real-time AJAX updates
- Success/error message display
- Auto-refresh after operations
- Disabled state when connection is off

### JavaScript Enhancements
- Loading states on buttons
- Confirmation dialogs for destructive actions
- Error handling and user feedback
- Non-blocking AJAX requests

---

## Integration with Existing Code

### Modified Files:
- `igny8-bridge.php` - Added meta boxes class loading
- `includes/functions.php` - Added optimizer meta field registrations
- `data/site-collection.php` - Integrated link graph extraction

### New Dependencies:
- None (uses existing Igny8API class)

---

## Testing Checklist

- [ ] Planner brief displays correctly in post editor
- [ ] Fetch brief button works and caches data
- [ ] Request refresh button triggers Planner refresh
- [ ] Link graph extraction works on posts with links
- [ ] Link graph is included in site scans
- [ ] Link graph is sent to Linker endpoint
- [ ] Optimizer job creation works
- [ ] Optimizer status check works
- [ ] All features respect module toggles
- [ ] All features respect connection enabled toggle
- [ ] Meta boxes only show for posts with task IDs
- [ ] Error handling works correctly

---

## Notes

1. **Link Graph Processing**: Currently limited to 1000 posts per run to prevent timeouts. Can be increased or made configurable.

2. **Brief Caching**: Briefs are cached in post meta to reduce API calls. Cache can be refreshed manually.

3. **Optimizer Jobs**: Jobs are created asynchronously. Status must be checked manually or via webhook (Phase 6).

4. **Module Dependencies**: All features check module enablement before executing.

5. **Connection Toggle**: All features respect the master connection toggle added earlier.

---

## Next Steps (Phase 6)

Phase 5.3 (Accept link recommendations via webhook) is deferred to Phase 6, which will implement:
- REST endpoint `/wp-json/igny8/v1/event` with shared secret
- Webhook handler for link recommendations
- Link insertion queue system