# WordPress Implementation Guide: Douay-Rheims Bible Verses Plugin

This guide explains how the original Python scripts have been implemented in the WordPress plugin.

## 1. Plugin Structure

The plugin follows the standard WordPress plugin structure:

```
douay-rheims-bible-verses/
├── admin/               # Admin-related files
│   ├── class-dr-admin.php
│   ├── css/
│   ├── js/
│   └── views/
│       ├── admin-page.php
│       └── admin-ai-settings.php
├── includes/            # Core plugin files
│   ├── class-dr-bible-index.php
│   ├── class-dr-bible-verses.php
│   └── class-dr-ai-commentary.php
├── public/              # Frontend files
│   ├── css/
│   │   ├── dr-bible-verses-public.css
│   │   └── dr-bible-verses-public-commentary.css
│   └── js/
│       ├── dr-bible-verses-public.js
│       └── dr-bible-verses-public-commentary.js
├── bible-texts/         # Directory for Bible text files
└── douay-rheims-bible-verses.php  # Main plugin file
```

## 2. Python to PHP Mapping

### 2.1 Bible Index (douay_rheims_index.py -> class-dr-bible-index.php)

The `douay_rheims_index.py` script's functionality is implemented in the `DR_Bible_Index` class:

- `count_verses_in_file()` -> `count_verses_in_file()` method
- `generate_verse_counts()` -> `generate_verse_counts()` method
- `generate_verse_index()` -> `generate_verse_index()` method

The class handles the creation and management of the verse index, which is stored in the WordPress database.

### 2.2 Verse Retrieval (p2.py -> class-dr-bible-verses.php)

The verse retrieval functionality from `p2.py` is implemented in the `DR_Bible_Verses` class:

- Random verse selection -> `get_random_verse()` method
- Verse text retrieval -> `get_verse_text()` method
- Verse formatting -> Various formatting methods with multiple options

### 2.3 AI Commentary (p2.py -> class-dr-ai-commentary.php)

The AI commentary features are implemented in the `DR_AI_Commentary` class:

- Commentary generation using Google's Gemini API
- Support for personalized commentary (e.g., as St. Augustine)
- AJAX handlers for frontend interaction
- Shortcode for easy integration into WordPress pages

## 3. WordPress Integration Features

### 3.1 Shortcodes

The plugin provides several shortcodes:

- `[dr_random_verse]` - Displays a random Bible verse
- `[dr_verse]` - Displays a specific Bible verse
- `[dr_verse_commentary]` - Displays a verse with AI commentary

### 3.2 Admin Interface

The admin interface allows:

- Uploading Bible text files
- Managing the verse index
- Configuring the AI commentary settings (API key)
- Viewing statistics about the Bible database

### 3.3 AJAX Integration

The plugin uses AJAX for dynamic interactions:

- Refreshing verses without page reload
- Fetching new AI commentary on demand
- Admin operations like file uploads and index regeneration

## 4. Usage Examples

### 4.1 Basic Random Verse

```
[dr_random_verse]
```

### 4.2 Specific Book/Chapter

```
[dr_random_verse book="Genesis" chapter="1"]
```

### 4.3 Specific Verse

```
[dr_verse book="Genesis" chapter="1" verse="1"]
```

### 4.4 Verse with AI Commentary

```
[dr_verse_commentary]
```

### 4.5 Verse with Persona-based Commentary

```
[dr_verse_commentary persona="St. Thomas Aquinas"]
```

## 5. Implementation Notes

- The plugin uses WordPress options to store the Bible index and settings
- Bible text files are stored in a dedicated directory
- The API key for Gemini is stored securely using WordPress options
- JavaScript is used for frontend interactivity
- The plugin includes proper error handling for missing files, API errors, etc.

## 6. Custom Styling

The plugin includes default CSS styles, but these can be overridden in your theme:

- `.dr-bible-verse` - Styling for verse containers
- `.dr-text` - Styling for verse text
- `.dr-reference` - Styling for verse references
- `.dr-bible-commentary` - Styling for commentary containers
- `.dr-commentary-text` - Styling for commentary text

## 7. Security Considerations

- All user inputs are properly sanitized
- AJAX requests include nonce verification
- API keys are stored securely and not exposed to public users

## 8. Performance Optimization

- Bible index is cached to avoid regeneration on every page load
- AJAX is used to load dynamic content only when needed
- Error states are handled gracefully with user-friendly messages