wp-agentic-writer/docs/user-facing/IMAGE_GENERATION_README.md

Image Generation Feature - Testing Guide

✅ Implementation Complete

The AI-powered image generation feature has been fully implemented and is ready for testing.

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🎯 What Was Implemented

Backend (PHP)

1. Database Tables

   • wp_wpaw_images - Stores image recommendations from the agent
   • wp_wpaw_images_variants - Stores generated image variants

2. Image Manager Class (includes/class-image-manager.php)

   • Article analysis for optimal image placement
   • Model-specific prompt generation (FLUX.2 klein, Riverflow V2 Max, FLUX.2 max)
   • Image variant generation via OpenRouter API
   • WordPress Media Library integration
   • Automatic temp file cleanup (7+ days)

3. REST API Endpoints

   • GET /wp-json/wp-agentic-writer/v1/image-recommendations/{post_id}
   • POST /wp-json/wp-agentic-writer/v1/generate-image
   • POST /wp-json/wp-agentic-writer/v1/commit-image

4. OpenRouter Provider Updates

   • Proper image generation API implementation
   • Support for variant count, size, quality parameters

5. Cron Job

   • Daily cleanup of temp images older than 7 days
   • Automatic scheduling on plugin activation

Frontend (JavaScript)

1. Image Modal Component (assets/js/image-modal.js)
   • Image recommendation review
   • Editable prompts and alt text
   • User-controlled variant count (1-3 per image)
   • Cost preview before generation
   • Variant selection interface
   • Automatic Gutenberg block updates

Settings

1. Updated Model Presets
   • Budget: FLUX.2 klein ($0.014-0.042/image)
   • Balanced: Riverflow V2 Max ($0.03/image)
   • Premium: FLUX.2 max ($0.07-0.21/image)

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🚀 How to Test

Step 1: Activate/Reactivate Plugin

Important: You need to reactivate the plugin to create the new database tables.

1. Go to Plugins in WordPress admin
2. Deactivate WP Agentic Writer
3. Activate WP Agentic Writer again

This will:

• Create wp_wpaw_images table
• Create wp_wpaw_images_variants table
• Create /wp-content/uploads/wpaw/ directory
• Schedule daily cleanup cron job

Alternative: Run the SQL manually in phpMyAdmin/Adminer using CREATE_TABLE.sql

Step 2: Verify Tables Created

Run this in phpMyAdmin or Adminer:

SHOW TABLES LIKE 'wp_wpaw_%';

You should see:

• wp_wpaw_cost_tracking
• wp_wpaw_images
• wp_wpaw_images_variants

Step 3: Configure Image Model

1. Go to Settings → WP Agentic Writer
2. Click Models tab
3. Choose a preset or manually select an image model:
   • Budget: black-forest-labs/flux.2-klein
   • Balanced: sourceful/riverflow-v2-max (recommended)
   • Premium: black-forest-labs/flux.2-max

Step 4: Test Image Generation Flow

A. Create a New Post

1. Create a new post in WordPress
2. Open the WP Agentic Writer sidebar
3. Enable Include Images in the Config tab (should be on by default)

B. Generate Article with Images

1. In Chat mode, discuss your article topic
2. Switch to Planning mode
3. Click Generate Plan
4. Click Execute Plan

The agent will:

• Write the article content
• Insert [IMAGE: description] placeholders
• These will be converted to empty core/image blocks with data-agent-image-id attributes

C. Review Image Recommendations (Manual Trigger for Now)

Note: The automatic modal trigger after article generation needs to be integrated into sidebar.js. For now, you can test the backend directly:

Test Backend API:

# Get image recommendations
curl -X GET "http://your-site.local/wp-json/wp-agentic-writer/v1/image-recommendations/{POST_ID}" \
  -H "X-WP-Nonce: YOUR_NONCE"

# Generate image variants
curl -X POST "http://your-site.local/wp-json/wp-agentic-writer/v1/generate-image" \
  -H "Content-Type: application/json" \
  -H "X-WP-Nonce: YOUR_NONCE" \
  -d '{
    "post_id": 123,
    "agent_image_id": "img_hero_1",
    "prompt": "Modern dashboard interface with blue colors",
    "variant_count": 2
  }'

# Commit image to Media Library
curl -X POST "http://your-site.local/wp-json/wp-agentic-writer/v1/commit-image" \
  -H "Content-Type: application/json" \
  -H "X-WP-Nonce: YOUR_NONCE" \
  -d '{
    "post_id": 123,
    "agent_image_id": "img_hero_1",
    "variant_id": 1,
    "alt": "Dashboard showing workflow automation"
  }'

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📁 File Structure

wp-agentic-writer/
├── includes/
│   ├── class-image-manager.php          ✅ NEW - Core image generation logic
│   ├── class-gutenberg-sidebar.php      ✅ UPDATED - Added REST endpoints
│   ├── class-openrouter-provider.php    ✅ UPDATED - Proper image API
│   └── class-settings.php               ✅ UPDATED - New image model presets
├── assets/
│   └── js/
│       └── image-modal.js               ✅ NEW - Frontend modal component
├── wp-agentic-writer.php                ✅ UPDATED - Activation & cron hooks
├── CREATE_TABLE.sql                     ✅ UPDATED - Added image tables
└── IMAGE_GENERATION_IMPLEMENTATION_PLAN.md  ✅ Complete implementation plan

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🔍 Debugging

Check if Tables Exist

DESCRIBE wp_wpaw_images;
DESCRIBE wp_wpaw_images_variants;

Check Temp Directory

ls -la /path/to/wp-content/uploads/wpaw/

Should exist with .htaccess and index.php security files.

Check Cron Job Scheduled

// Add to functions.php temporarily
var_dump(wp_next_scheduled('wpaw_cleanup_temp_images'));

Should return a timestamp.

Check REST API Endpoints

Visit: http://your-site.local/wp-json/wp-agentic-writer/v1/

Should list the new endpoints:

• /image-recommendations/(?P<post_id>\d+)
• /generate-image
• /commit-image

Enable Debug Logging

Add to wp-config.php:

define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);

Check /wp-content/debug.log for errors.

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💰 Cost Estimates

Per Image (with 2 variants)

Preset	Model	Cost per Image	Cost for 3 Images
Budget	FLUX.2 klein	~$0.04	~$0.12
Balanced	Riverflow V2 Max	~$0.06	~$0.18
Premium	FLUX.2 max	~$0.30	~$0.90

User Controls

• Variant count: 1-3 per image (user selectable)
• Image selection: Generate only selected images
• Skip option: Can skip all images

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🐛 Known Limitations

1. Modal Integration: The image modal needs to be triggered from sidebar.js after article execution completes. Currently, the modal component exists but needs integration.

2. Image Block Detection: The system looks for core/image blocks with data-agent-image-id attribute to update them after image selection.

3. OpenRouter API: Requires OpenRouter API key with image generation access. Not all models may be available depending on your OpenRouter account.

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🔧 Next Steps for Full Integration

To complete the user-facing feature, you need to:

1. Trigger Modal After Article Generation

   • In sidebar.js, after article execution completes
   • Check if images were recommended
   • Open the image review modal

2. Add "Generate Images" Button

   • Add a button in the sidebar to manually trigger image generation
   • Useful for regenerating or adding images later

3. Block Toolbar Integration

   • Add "Generate Image" button to empty image blocks
   • Allow regeneration of existing images

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✅ Testing Checklist

• Plugin reactivated successfully
• Database tables created
• Temp directory exists with security files
• Cron job scheduled
• Image model configured in settings
• Article generated with [IMAGE: ...] placeholders
• Image blocks created in Gutenberg
• REST API endpoints accessible
• Can generate image variants via API
• Can commit image to Media Library
• Temp files cleaned up after 7 days

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📞 Support

If you encounter issues:

1. Check wp-content/debug.log for PHP errors
2. Check browser console for JavaScript errors
3. Verify OpenRouter API key has image generation access
4. Ensure database tables were created
5. Check file permissions on /wp-content/uploads/wpaw/

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Implementation Date: January 28, 2026
Version: 1.0
Status: ✅ Ready for Testing