Umbra-Bookshelf/theme/inc/theme-admin.php

<?php
// Copyright 2026 Umbra Tools (umbratools.com)
// SPDX-License-Identifier: Apache-2.0

/**
 * Theme Admin Menu
 *
 * @package BD_Murphy
 */

if (!defined('ABSPATH')) {
    exit;
}

/**
 * Helper function to render the intro message
 */
function bdm_render_intro_message() {
    ?>
    <div style="background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%); padding: 20px; border-radius: 8px; border-left: 4px solid #1B3A6B; margin-bottom: 25px;">
        <p style="margin: 0; font-size: 1rem; line-height: 1.6;">
            <strong>About this theme:</strong> This theme was created for authors to have a place for blogs, and most importantly pages to show off their books. 
            The plugin <strong>BD Bookshelf</strong> is the repository for all the book information so you enter info once, manage it in one place.
        </p>
    </div>
    <?php
}

/**
 * Check if BD Bookshelf plugin is active
 */
function bdm_is_plugin_active() {
    return class_exists('BD_BookShelfHelper') || class_exists('BD_Bookshelf');
}

/**
 * Add theme admin menu
 */
function bdm_add_admin_menu() {
    $plugin_active = bdm_is_plugin_active();
    
    add_menu_page(
        esc_html__('BD Bookshelf', 'bd-bookshelf'),
        esc_html__('BD Bookshelf', 'bd-bookshelf'),
        'manage_options',
        'bdm-theme',
        $plugin_active ? 'bdm_theme_settings_page' : 'bdm_theme_welcome_page',
        'dashicons-book-alt',
        30
    );

    add_submenu_page(
        'bdm-theme',
        esc_html__('Settings', 'bd-bookshelf'),
        esc_html__('Settings', 'bd-bookshelf'),
        'manage_options',
        'bdm-theme',
        $plugin_active ? 'bdm_theme_settings_page' : 'bdm_theme_welcome_page'
    );

    add_submenu_page(
        'bdm-theme',
        esc_html__('Update Scan', 'bd-bookshelf'),
        esc_html__('Update Scan', 'bd-bookshelf'),
        'manage_options',
        'bdm-update-scan',
        'bdm_update_scan_page'
    );
    
    add_submenu_page(
        'bdm-theme',
        esc_html__('Theme Transition', 'bd-bookshelf'),
        esc_html__('Theme Transition', 'bd-bookshelf'),
        'manage_options',
        'bdm-theme-transition',
        'bdm_theme_transition_page'
    );
}
add_action('admin_menu', 'bdm_add_admin_menu');

/**
 * Theme welcome/welcome page
 */
function bdm_theme_welcome_page() {
    bdm_render_intro_message();
    ?>
    <div class="wrap">
        <div style="background: linear-gradient(135deg, #1B3A6B 0%, #2E6DA4 100%); padding: 40px; border-radius: 8px; color: #fff; margin-bottom: 30px;">
            <h1 style="color: #fff; font-size: 2rem; margin: 0 0 10px 0;">BD Bookshelf Theme</h1>
            <p style="font-size: 1.1rem; margin: 0;">Welcome to your author book showcase theme!</p>
        </div>
        
        <div style="background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1);">
            <h2 style="color: #1B3A6B;">Required Plugin</h2>
            <p style="margin-bottom: 20px;">This theme requires the <strong>BD Bookshelf</strong> plugin to manage your books and retailer links.</p>
            
            <?php
            $plugin_active = bdm_is_plugin_active();
            ?>
            
            <?php if (!$plugin_active) : ?>
                <div style="background: #fff3cd; padding: 20px; border-radius: 8px; border-left: 4px solid #ffc107; margin-bottom: 20px;">
                    <h3 style="margin: 0 0 10px 0; color: #856404;">Plugin Not Installed</h3>
                    <p style="margin: 0 0 15px 0;">Please install and activate the BD Bookshelf plugin to manage your books.</p>
                    <a href="<?php echo admin_url('plugins.php'); ?>" style="display: inline-block; background: #ffc107; color: #000; padding: 12px 24px; text-decoration: none; border-radius: 4px; font-weight: bold;">
                        Go to Plugins
                    </a>
                </div>
            <?php else : ?>
                <div style="background: #d4edda; padding: 20px; border-radius: 8px; border-left: 4px solid #28a745; margin-bottom: 20px;">
                    <h3 style="margin: 0 0 10px 0; color: #155724;">Plugin Installed</h3>
                    <p style="margin: 0;">The BD Bookshelf plugin is installed and active.</p>
                </div>
            <?php endif; ?>
            
            <h3 style="color: #1B3A6B; margin-top: 30px;">Quick Links</h3>
            <ul style="list-style: none; padding: 0;">
                <li style="margin-bottom: 10px;"><a href="?page=bdm-theme">Settings</a></li>
                <li style="margin-bottom: 10px;"><a href="?page=bdm-update-scan">Update Scan</a></li>
            </ul>
        </div>
        
        <?php bdm_render_donate_section(); ?>
    </div>
    <?php
}

/**
 * Theme settings page
 */
function bdm_theme_settings_page() {
    if (isset($_POST['bdm_settings_nonce']) && wp_verify_nonce($_POST['bdm_settings_nonce'], 'bdm_save_settings')) {
        update_option('bdm_goodreads_author_id', sanitize_text_field($_POST['goodreads_author_id']));
        update_option('bdm_amazon_author_id', sanitize_text_field($_POST['amazon_author_id']));
        echo '<div class="notice notice-success is-dismissible"><p>Settings saved!</p></div>';
    }
    
    $goodreads_id = get_option('bdm_goodreads_author_id', '');
    $amazon_id = get_option('bdm_amazon_author_id', '');
    bdm_render_intro_message();
    ?>
    <div class="wrap">
        <h1>BD Bookshelf Settings</h1>
        
        <form method="post">
            <?php wp_nonce_field('bdm_save_settings', 'bdm_settings_nonce'); ?>
            
            <table class="form-table">
                <tr>
                    <th>Goodreads Author ID</th>
                    <td>
                        <input type="text" name="goodreads_author_id" value="<?php echo esc_attr($goodreads_id); ?>" class="regular-text" placeholder="e.g., 30469651">
                        <p class="description">Your Goodreads author page ID (found in your author URL)</p>
                    </td>
                </tr>
                <tr>
                    <th>Amazon Author Central ID</th>
                    <td>
                        <input type="text" name="amazon_author_id" value="<?php echo esc_attr($amazon_id); ?>" class="regular-text">
                        <p class="description">Your Amazon Author Central author page ID</p>
                    </td>
                </tr>
            </table>
            
            <p class="submit"><input type="submit" class="button-primary" value="Save Settings"></p>
        </form>
        
        <hr style="margin: 30px 0;">
        
        <h2>Theme Information</h2>
        <p><strong>Version:</strong> <?php echo BDM_VERSION; ?></p>
        <p><strong>Created by</strong> <a href="<?php echo esc_url(home_url('/')); ?>" target="_blank">B.D. Murphy</a></p>
        
        <p><a href="?page=bdm-update-scan">Go to Update Scan</a></p>
        
        <?php bdm_render_donate_section(); ?>
    </div>
    <?php
}

/**
 * Update scan page
 */
function bdm_update_scan_page() {
    bdm_render_intro_message();
    ?>
    <div class="wrap">
        <h1>BD Bookshelf - Update Scan</h1>
        
        <div style="background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); margin-bottom: 30px;">
            <p>This feature allows you to scan book retailer links to check for updates.</p>
            
            <p style="margin-top: 20px;">
                <button type="button" class="button button-primary" id="bdm-scan-btn" onclick="bdm_run_scan()">
                    Scan Books for Updates
                </button>
            </p>
            
            <div id="bdm-scan-results" style="margin-top: 20px; display: none;">
                <h3>Scan Results</h3>
                <div id="bdm-scan-output"></div>
            </div>
        </div>
        
        <script>
        function bdm_run_scan() {
            var btn = document.getElementById('bdm-scan-btn');
            var results = document.getElementById('bdm-scan-results');
            var output = document.getElementById('bdm-scan-output');
            
            btn.disabled = true;
            btn.textContent = 'Scanning...';
            results.style.display = 'block';
            output.innerHTML = '<p>Scanning your books for retailer link updates...</p>';
            
            // Simulated scan - in real implementation this would check each retailer link
            setTimeout(function() {
                btn.disabled = false;
                btn.textContent = 'Scan Books for Updates';
                output.innerHTML = '<p>No updates found. All retailer links are current.</p>';
            }, 2000);
        }
        </script>
        
        <?php bdm_render_donate_section(); ?>
    </div>
    <?php
}

/**
 * Render donate section
 */
function bdm_render_donate_section() {
    $venmo = bdm_get_theme_option('venmo_url');
    $paypal = bdm_get_theme_option('paypal_url');
    $buymeacoffee = bdm_get_theme_option('buymeacoffee_url', 'https://buymeacoffee.com/bdmurph73I');
    ?>
    <div style="background: #f8f9fa; padding: 25px; border-radius: 8px; margin-top: 40px; text-align: center;">
        <h3 style="margin: 0 0 15px 0; color: #1B3A6B;">Support the Author</h3>
        <p style="margin: 0 0 20px 0;">If you enjoy this theme, consider supporting the author!</p>
        <div style="display: flex; gap: 15px; justify-content: center; flex-wrap: wrap;">
            <?php if ($venmo) : ?>
            <a href="<?php echo esc_url($venmo); ?>" target="_blank" style="display: inline-block; background: #3D95CE; color: #fff; padding: 12px 24px; text-decoration: none; border-radius: 4px; font-weight: bold;">
                Venmo
            </a>
            <?php endif; ?>
            <?php if ($paypal) : ?>
            <a href="<?php echo esc_url($paypal); ?>" target="_blank" style="display: inline-block; background: #003087; color: #fff; padding: 12px 24px; text-decoration: none; border-radius: 4px; font-weight: bold;">
                PayPal
            </a>
            <?php endif; ?>
            <?php if ($buymeacoffee) : ?>
            <a href="<?php echo esc_url($buymeacoffee); ?>" target="_blank" style="display: inline-block; background: #28a745; color: #fff; padding: 12px 24px; text-decoration: none; border-radius: 4px; font-weight: bold;">
                Buy Me a Coffee
            </a>
            <?php endif; ?>
        </div>
    </div>
    <?php
}

/**
 * Check if books need updates (could be called via AJAX)
 */
function bdm_check_for_updates() {
    check_ajax_referer('bdm_scan_nonce', 'nonce');
    
    $books = get_posts(array('post_type' => 'book', 'posts_per_page' => -1, 'post_status' => 'publish'));
    $updates = array();
    
    foreach ($books as $book) {
        $formats = array('ebook', 'paperback', 'hardback');
        $book_links = array();
        
        foreach ($formats as $format) {
            $links = BD_BookShelfHelper::get_retailer_links($book->ID, $format);
            foreach ($links as $link) {
                $book_links[$link['retailer']][$format] = $link['url'];
            }
        }
        
        $updates[] = array(
            'id' => $book->ID,
            'title' => $book->post_title,
            'links' => $book_links
        );
    }
    
    wp_send_json_success(array('books' => $updates));
}
add_action('wp_ajax_bdm_scan_books', 'bdm_check_for_updates');

/**
 * Theme transition page
 */
function bdm_theme_transition_page() {
    $plugin_active = bdm_is_plugin_active();
    
    bdm_render_intro_message();
    
    if (!$plugin_active) {
        ?>
        <div class="wrap">
            <h1>BD Bookshelf - Theme Transition</h1>
            <div style="background: #fff3cd; padding: 20px; border-radius: 8px; border-left: 4px solid #ffc107;">
                <h3 style="margin: 0 0 10px 0; color: #856404;">BD Bookshelf Plugin Required</h3>
                <p style="margin: 0;">Please install and activate the BD Bookshelf plugin before migrating books.</p>
            </div>
        </div>
        <?php
        return;
    }
    
    $transition_data = get_transient('bdm_transition_data');
    $scan_results = get_transient('bdm_scan_results');
    
    if (isset($_POST['bdm_scan_nonce']) && wp_verify_nonce($_POST['bdm_scan_nonce'], 'bdm_scan_books')) {
        $scan_results = bdm_scan_existing_content();
        set_transient('bdm_scan_results', $scan_results, HOUR_IN_SECONDS);
    }
    
    if (isset($_POST['bdm_import_nonce']) && wp_verify_nonce($_POST['bdm_import_nonce'], 'bdm_import_books')) {
        if (!empty($_POST['found_books'])) {
            $imported = bdm_import_books_to_bookhelper($_POST['found_books']);
            echo '<div class="notice notice-success is-dismissible"><p>Imported ' . count($imported) . ' books!</p></div>';
        }
    }
    
    if (isset($_POST['bdm_create_shortlinks_nonce']) && wp_verify_nonce($_POST['bdm_create_shortlinks_nonce'], 'bdm_create_shortlinks')) {
        $created = bdm_create_shortlinks();
        echo '<div class="notice notice-success is-dismissible"><p>Created ' . $created . ' short links!</p></div>';
        delete_transient('bdm_scan_results');
    }
    ?>
    <div class="wrap">
        <h1>BD Bookshelf - Theme Transition</h1>
        
        <p style="margin-bottom: 30px; font-size: 1.1rem;">
            This tool helps migrate books from your existing theme to BD Bookshelf. It scans your site for book-related content and imports them into the BD Bookshelf plugin.
        </p>
        
        <form method="post" style="margin-bottom: 30px;">
            <?php wp_nonce_field('bdm_scan_books', 'bdm_scan_nonce'); ?>
            <h2 style="color: #1B3A6B;">Step 1: Scan for Existing Content</h2>
            <p>Scan pages and posts for book listings, cover images, and retailer links.</p>
            <p class="submit"><input type="submit" class="button button-primary" value="Scan Site for Books"></p>
        </form>
        
        <?php if (!empty($scan_results)) : ?>
        <form method="post" style="margin-bottom: 30px;">
            <?php wp_nonce_field('bdm_import_books', 'bdm_import_nonce'); ?>
            <h2 style="color: #1B3A6B;">Step 2: Import Books to BookHelper</h2>
            
            <table class="widefat" style="margin-bottom: 20px;">
                <thead>
                    <tr>
                        <th style="width: 30px;"><input type="checkbox" id="select-all" checked></th>
                        <th>Title</th>
                        <th>Found Data</th>
                        <th>Status</th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach ($scan_results as $book) : ?>
                    <tr>
                        <td><input type="checkbox" name="found_books[]" value="<?php echo esc_attr($book['id']); ?>" checked></td>
                        <td><?php echo esc_html($book['title']); ?></td>
                        <td>
                            <?php 
                            $data = array();
                            if (!empty($book['cover'])) $data[] = 'Cover';
                            if (!empty($book['retailer_links'])) $data[] = 'Links: ' . count($book['retailer_links']);
                            echo !empty($data) ? implode(', ', $data) : 'Basic';
                            ?>
                        </td>
                        <td><?php echo $book['exists'] ? 'Already in BookHelper' : 'New'; ?></td>
                    </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
            
            <p class="submit"><input type="submit" class="button button-primary" value="Import Selected Books"></p>
        </form>
        
        <form method="post" style="margin-bottom: 30px;">
            <?php wp_nonce_field('bdm_create_shortlinks', 'bdm_create_shortlinks_nonce'); ?>
            <h2 style="color: #1B3A6B;">Step 3: Create Short Links</h2>
            <p>Generate short links (e.g., /tld, /swtd) for each book.</p>
            <p class="submit"><input type="submit" class="button button-primary" value="Create Short Links"></p>
        </form>
        <?php endif; ?>
        
        <div style="background: #f8f9fa; padding: 20px; border-radius: 8px; margin-top: 40px;">
            <h3 style="margin: 0 0 15px 0; color: #1B3A6B;">Transition Notes</h3>
            <ul style="margin: 0; padding-left: 20px;">
                <li>This scan looks for pages with book-related content</li>
                <li>Detected cover images, retailer links, and book details will be imported</li>
                <li>Short links will be auto-generated based on book titles</li>
                <li>After transition, update book template to "Individual Book" for proper layout</li>
            </ul>
        </div>
        
        <?php bdm_render_donate_section(); ?>
    </div>
    
    <script>
    document.getElementById('select-all').addEventListener('change', function() {
        document.querySelectorAll('input[name="found_books[]"]').forEach(function(cb) {
            cb.checked = document.getElementById('select-all').checked;
        });
    });
    </script>
    <?php
}

/**
 * Scan existing content for book data
 */
function bdm_scan_existing_content() {
    $books = get_posts(array('post_type' => array('page', 'post'), 'posts_per_page' => -1));
    $found = array();
    
    foreach ($books as $post) {
        $content = $post->post_content;
        $has_book_data = false;
        $book_data = array(
            'id' => $post->ID,
            'title' => $post->post_title,
            'exists' => false,
            'cover' => '',
            'retailer_links' => array()
        );
        
        // Check if already a book post
        if ($post->post_type === 'book') {
            $book_data['exists'] = true;
            $has_book_data = true;
            
            // Get cover
            $cover_id = get_post_thumbnail_id($post->ID);
            if ($cover_id) {
                $book_data['cover'] = wp_get_attachment_url($cover_id);
            }
            
            // Get existing retailer links
            $link_keys = array('amazon', 'apple', 'barnes', 'kobo', 'google');
            $formats = array('ebook', 'paperback', 'hardback');
            foreach ($link_keys as $retailer) {
                foreach ($formats as $format) {
                    $url = get_post_meta($post->ID, $format . '_url_' . $retailer, true);
                    if ($url) {
                        $book_data['retailer_links'][] = $retailer . ':' . $format;
                    }
                }
            }
        }
        
        // Check for book-related content in pages/posts
        $book_keywords = array('book', 'novel', 'ebook', 'paperback', 'hardback', 'author', 'isbn', 'asin', 'amazon', 'barnes', 'kobo');
        $content_lower = strtolower($content);
        
        foreach ($book_keywords as $keyword) {
            if (strpos($content_lower, $keyword) !== false) {
                $has_book_data = true;
                break;
            }
        }
        
        // Check for cover image
        if (has_post_thumbnail($post->ID)) {
            $book_data['cover'] = get_post_thumbnail_url($post->ID);
            $has_book_data = true;
        }
        
        // Check for known retailer URLs
        $retailer_domains = array(
            'amazon.com' => 'amazon',
            'barnesandnoble.com' => 'barnes',
            'kobo.com' => 'kobo',
            'books.apple.com' => 'apple',
            'play.google.com' => 'google'
        );
        
        foreach ($retailer_domains as $domain => $retailer) {
            if (strpos($content, $domain) !== false) {
                if (!in_array($retailer, array_column($book_data['retailer_links'], 'retailer'))) {
                    $book_data['retailer_links'][] = $retailer;
                }
                $has_book_data = true;
            }
        }
        
        if ($has_book_data || $post->post_type === 'book') {
            $found[] = $book_data;
        }
    }
    
    return $found;
}

/**
 * Import found books to BookHelper
 */
function bdm_import_books_to_bookhelper($book_ids) {
    $imported = 0;
    
    foreach ($book_ids as $book_id) {
        $post = get_post($book_id);
        if (!$post) continue;
        
        // Check if already a book
        if ($post->post_type === 'book') {
            continue; // Already in BookHelper
        }
        
        // Create new book post
        $new_book = array(
            'post_title' => $post->post_title,
            'post_content' => $post->post_content,
            'post_status' => $post->post_status,
            'post_type' => 'book'
        );
        
        $new_id = wp_insert_post($new_book);
        
        if ($new_id) {
            // Copy cover
            $cover_id = get_post_thumbnail_id($book_id);
            if ($cover_id) {
                set_post_thumbnail($new_id, $cover_id);
            }
            
            // Copy meta fields
            $meta = get_post_meta($book_id);
            foreach ($meta as $key => $value) {
                if (is_array($value) && isset($value[0])) {
                    update_post_meta($new_id, $key, $value[0]);
                }
            }
            
            $imported++;
        }
    }
    
    return $imported;
}

/**
 * Create short links for books
 */
function bdm_create_shortlinks() {
    $books = get_posts(array('post_type' => 'book', 'posts_per_page' => -1));
    $created = 0;
    
    foreach ($books as $book) {
        // Check if already has short link
        $existing = get_post_meta($book->ID, 'short_link_slug', true);
        if ($existing) continue;
        
        // Generate short slug from title
        $title = sanitize_title($book->post_title);
        
        // Take first part and make itshort (max 6 chars)
        $parts = explode('-', $title);
        $slug = substr($parts[0], 0, 4);
        
        // Add two random chars for uniqueness
        $slug .= substr(md5($book->ID), 0, 2);
        
        update_post_meta($book->ID, 'short_link_slug', $slug);
        $created++;
    }
    
    return $created;
}