<?php
/**
 * AKSRT Post Meta Box
 *
 * 为文章（post）添加局部配置字段：
 * - 附加封面图组（用于列表多图模式）
 * - 自定义摘要
 * - 列表布局覆盖
 * - 文章头图模式
 * - 目录树开关
 * - 版权声明覆盖
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

class AKSRT_Post_Meta_Box {

    private static $instance = null;

    const META_KEY = AKSRT_Domain_Model::POST_META_KEY;

    public static function get_instance(): self {
        if (null === self::$instance) self::$instance = new self();
        return self::$instance;
    }

    public function init(): void {
        add_action('add_meta_boxes', [$this, 'register_meta_box']);
        add_action('save_post', [$this, 'save_meta_box']);
        // §3.8 Quick / Bulk edit
        add_filter('manage_post_posts_columns', [$this, 'add_columns']);
        add_action('manage_post_posts_custom_column', [$this, 'render_column'], 10, 2);
        add_action('quick_edit_custom_box', [$this, 'render_quick_edit'], 10, 2);
        add_action('bulk_edit_custom_box', [$this, 'render_quick_edit'], 10, 2);
        add_action('admin_footer-edit.php', [$this, 'admin_quick_edit_script']);
    }

    /**
     * Get post meta with defaults.
     */
    public static function get_meta(int $post_id): array {
        $defaults = AKSRT_Domain_Model::default_post_meta();
        $saved = get_post_meta($post_id, self::META_KEY, true);
        if (!is_array($saved)) {
            $saved = [];
        }
        $meta = array_merge($defaults, $saved);
        // New route only: episodes is always a list of {url,title}.
        $meta['featured_video_episode'] = self::sanitize_video_episodes($meta['featured_video_episode'] ?? []);
        if (!in_array((string) ($meta['show_toc'] ?? ''), ['', '0', '1'], true)) {
            $meta['show_toc'] = '';
        }
        return $meta;
    }

    /**
     * Sanitize video episode list (new route: array of url/title rows).
     *
     * @param mixed $raw Raw form / meta value.
     * @return array<int, array{url:string,title:string}>
     */
    public static function sanitize_video_episodes($raw): array {
        if (!is_array($raw)) {
            return [];
        }
        $out = [];
        foreach ($raw as $row) {
            if (!is_array($row)) {
                continue;
            }
            $url = esc_url_raw((string) ($row['url'] ?? ''));
            if ($url === '') {
                continue;
            }
            $out[] = [
                'url'   => $url,
                'title' => sanitize_text_field((string) ($row['title'] ?? '')),
            ];
            if (count($out) >= 50) {
                break;
            }
        }
        return $out;
    }

    /**
     * Get a single post meta value.
     */
    public static function get_meta_value(int $post_id, string $key, $default = '') {
        $meta = self::get_meta($post_id);
        return $meta[$key] ?? $default;
    }

    /**
     * Register the meta box.
     */
    public function register_meta_box(): void {
        add_meta_box(
            'aksrt_post_meta',
            __('AKSRT 文章设置', 'aksrt'),
            [$this, 'render_meta_box'],
            'post',
            'side',
            'default'
        );

        add_meta_box(
            'aksrt_page_meta',
            __('AKSRT 页面设置', 'aksrt'),
            [$this, 'render_page_meta_box'],
            'page',
            'side',
            'default'
        );

        // §3.8 custom filter metabox (side)
        $filter_settings = class_exists('AKSRT_Settings')
            ? AKSRT_Settings::get_post_filter_settings()
            : ['custom_filter' => []];
        if (!empty($filter_settings['custom_filter'])) {
            add_meta_box(
                'aksrt_custom_filter_meta',
                __('高级筛选', 'aksrt'),
                [$this, 'render_custom_filter_meta_box'],
                'post',
                'side',
                'default'
            );
        }
    }

    /**
     * Render the page meta box (page_header_style / cover override).
     */
    public function render_page_meta_box(WP_Post $post): void {
        $header_style = get_post_meta($post->ID, 'page_header_style', true);
        $cover_img    = get_post_meta($post->ID, 'page_header_cover_img', true);
        wp_nonce_field('aksrt_page_meta', 'aksrt_page_meta_nonce');
        ?>
        <p><strong><?php esc_html_e('页面标题样式覆盖', 'aksrt'); ?></strong></p>
        <select name="page_header_style" class="widefat">
            <option value="" <?php selected($header_style, ''); ?>><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
            <option value="not" <?php selected($header_style, 'not'); ?>><?php esc_html_e('不显示', 'aksrt'); ?></option>
            <option value="1" <?php selected($header_style, '1'); ?>><?php esc_html_e('简单', 'aksrt'); ?></option>
            <option value="2" <?php selected($header_style, '2'); ?>><?php esc_html_e('卡片', 'aksrt'); ?></option>
            <option value="3" <?php selected($header_style, '3'); ?>><?php esc_html_e('封面', 'aksrt'); ?></option>
        </select>
        <small class="description"><?php esc_html_e('覆盖全局「其它页面 → 统一页头」设置。', 'aksrt'); ?></small>

        <p><strong><?php esc_html_e('页面封面图覆盖', 'aksrt'); ?></strong></p>
        <input type="text" name="page_header_cover_img" value="<?php echo esc_attr($cover_img); ?>" class="widefat" placeholder="<?php esc_attr_e('图片 URL', 'aksrt'); ?>">
        <small class="description"><?php esc_html_e('覆盖全局默认封面图，仅封面样式（样式3）生效。', 'aksrt'); ?></small>
        <?php
    }

    /**
     * Render the meta box.
     */
    public function render_meta_box(WP_Post $post): void {
        $meta = self::get_meta($post->ID);
        wp_nonce_field('aksrt_post_meta', 'aksrt_post_meta_nonce');
        ?>
        <p><strong><?php esc_html_e('附加封面图', 'aksrt'); ?></strong></p>
        <p>
            <input type="text" name="aksrt_post_meta[cover_images]" value="<?php echo esc_attr($meta['cover_images']); ?>" class="widefat" placeholder="<?php esc_attr_e('附件ID，逗号分隔', 'aksrt'); ?>">
            <small class="description"><?php esc_html_e('用于列表多图模式，填写附件 ID（逗号分隔）。', 'aksrt'); ?></small>
        </p>

        <p><strong><?php esc_html_e('列表布局覆盖', 'aksrt'); ?></strong></p>
        <select name="aksrt_post_meta[layout_override]" class="widefat">
            <option value="" <?php selected($meta['layout_override'], ''); ?>><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
            <option value="card" <?php selected($meta['layout_override'], 'card'); ?>><?php esc_html_e('卡片', 'aksrt'); ?></option>
            <option value="list" <?php selected($meta['layout_override'], 'list'); ?>><?php esc_html_e('列表', 'aksrt'); ?></option>
            <option value="mini" <?php selected($meta['layout_override'], 'mini'); ?>><?php esc_html_e('迷你', 'aksrt'); ?></option>
        </select>

        <p><strong><?php esc_html_e('侧栏布局（Zibll show_layout）', 'aksrt'); ?></strong></p>
        <?php
        $show_layout = (string) get_post_meta($post->ID, '_aksrt_show_layout', true);
        if (!in_array($show_layout, ['no_sidebar', 'sidebar_left', 'sidebar_right'], true)) {
            $show_layout = '';
        }
        ?>
        <select name="aksrt_show_layout" class="widefat">
            <option value="" <?php selected($show_layout, ''); ?>><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
            <option value="no_sidebar" <?php selected($show_layout, 'no_sidebar'); ?>><?php esc_html_e('无侧栏', 'aksrt'); ?></option>
            <option value="sidebar_right" <?php selected($show_layout, 'sidebar_right'); ?>><?php esc_html_e('右侧栏', 'aksrt'); ?></option>
            <option value="sidebar_left" <?php selected($show_layout, 'sidebar_left'); ?>><?php esc_html_e('左侧栏', 'aksrt'); ?></option>
        </select>
        <p class="description"><?php esc_html_e('覆盖全局侧栏开关与左右位置，仅影响本文/本页。', 'aksrt'); ?></p>

        <p><strong><?php esc_html_e('头图模式', 'aksrt'); ?></strong></p>
        <select name="aksrt_post_meta[header_image_mode]" class="widefat">
            <option value="" <?php selected($meta['header_image_mode'], ''); ?>><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
            <option value="featured" <?php selected($meta['header_image_mode'], 'featured'); ?>><?php esc_html_e('特色图片', 'aksrt'); ?></option>
            <option value="auto" <?php selected($meta['header_image_mode'], 'auto'); ?>><?php esc_html_e('自动（内容首图）', 'aksrt'); ?></option>
            <option value="none" <?php selected($meta['header_image_mode'], 'none'); ?>><?php esc_html_e('不显示', 'aksrt'); ?></option>
        </select>

        <p>
            <label for="aksrt_show_toc"><strong><?php esc_html_e('目录树', 'aksrt'); ?></strong></label>
            <select name="aksrt_post_meta[show_toc]" id="aksrt_show_toc" class="widefat">
                <option value="" <?php selected((string) ($meta['show_toc'] ?? ''), ''); ?>><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
                <option value="1" <?php selected((string) ($meta['show_toc'] ?? ''), '1'); ?>><?php esc_html_e('强制开启', 'aksrt'); ?></option>
                <option value="0" <?php selected((string) ($meta['show_toc'] ?? ''), '0'); ?>><?php esc_html_e('强制关闭', 'aksrt'); ?></option>
            </select>
        </p>

        <p><strong><?php esc_html_e('单篇交互覆盖', 'aksrt'); ?></strong></p>
        <?php
        $toggle_fields = [
            'show_reading_progress' => __('阅读进度条', 'aksrt'),
            'enable_lightbox'       => __('图片灯箱', 'aksrt'),
            'show_related'          => __('相关推荐', 'aksrt'),
            'enable_like'           => __('点赞按钮', 'aksrt'),
            'enable_favorite'       => __('收藏按钮', 'aksrt'),
            'enable_share'          => __('分享按钮', 'aksrt'),
            'enable_print'          => __('打印按钮', 'aksrt'),
            'enable_pdf'            => __('PDF 导出按钮', 'aksrt'),
        ];
        foreach ($toggle_fields as $field_key => $field_label) :
        ?>
            <p>
                <label for="aksrt_post_meta_<?php echo esc_attr($field_key); ?>" class="screen-reader-text"><?php echo esc_html($field_label); ?></label>
                <select name="aksrt_post_meta[<?php echo esc_attr($field_key); ?>]" id="aksrt_post_meta_<?php echo esc_attr($field_key); ?>" class="widefat">
                    <option value="" <?php selected($meta[$field_key], ''); ?>><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
                    <option value="1" <?php selected($meta[$field_key], '1'); ?>><?php esc_html_e('强制开启', 'aksrt'); ?></option>
                    <option value="0" <?php selected($meta[$field_key], '0'); ?>><?php esc_html_e('强制关闭', 'aksrt'); ?></option>
                </select>
                <small class="description"><?php echo esc_html($field_label); ?></small>
            </p>
        <?php endforeach; ?>

        <p><strong><?php esc_html_e('相关推荐数量覆盖', 'aksrt'); ?></strong></p>
        <p>
            <input type="number" name="aksrt_post_meta[related_count]" value="<?php echo esc_attr((string) (int) $meta['related_count']); ?>" class="widefat" min="0" max="20" step="1">
            <small class="description"><?php esc_html_e('0 表示跟随全局设置。', 'aksrt'); ?></small>
        </p>

        <p>
            <label>
                <input type="checkbox" name="aksrt_post_meta[is_featured]" value="1" <?php checked(!empty($meta['is_featured'])); ?>>
                <?php esc_html_e('标记为推荐文章', 'aksrt'); ?>
            </label>
        </p>

        <p><strong><?php esc_html_e('自定义摘要', 'aksrt'); ?></strong></p>
        <textarea name="aksrt_post_meta[custom_excerpt]" rows="3" class="widefat" placeholder="<?php esc_attr_e('留空使用自动摘要', 'aksrt'); ?>"><?php echo esc_textarea($meta['custom_excerpt']); ?></textarea>

        <p><strong><?php esc_html_e('版权声明覆盖', 'aksrt'); ?></strong></p>
        <textarea name="aksrt_post_meta[copyright_text]" rows="3" class="widefat" placeholder="<?php esc_attr_e('留空使用默认版权文案', 'aksrt'); ?>"><?php echo esc_textarea($meta['copyright_text']); ?></textarea>

        <hr>
        <p><strong><?php esc_html_e('副标题', 'aksrt'); ?></strong></p>
        <input type="text" name="aksrt_post_meta[subtitle]" value="<?php echo esc_attr($meta['subtitle']); ?>" class="widefat" placeholder="<?php esc_attr_e('可选，显示在标题下方', 'aksrt'); ?>">

        <p><strong><?php esc_html_e('外链特色图', 'aksrt'); ?></strong></p>
        <input type="url" name="aksrt_post_meta[thumbnail_url]" value="<?php echo esc_url($meta['thumbnail_url']); ?>" class="widefat" placeholder="<?php esc_attr_e('外部图片 URL（覆盖特色图片）', 'aksrt'); ?>">
        <small class="description"><?php esc_html_e('填入外部图片 URL 将替代特色图片。', 'aksrt'); ?></small>

        <p><strong><?php esc_html_e('幻灯片封面', 'aksrt'); ?></strong></p>
        <input type="text" name="aksrt_post_meta[featured_slide]" value="<?php echo esc_attr($meta['featured_slide']); ?>" class="widefat" placeholder="<?php esc_attr_e('图片 URL，逗号分隔', 'aksrt'); ?>">
        <small class="description"><?php esc_html_e('多张图片 URL 用逗号分隔，用于封面轮播。', 'aksrt'); ?></small>

        <p><strong><?php esc_html_e('特色视频', 'aksrt'); ?></strong></p>
        <input type="url" name="aksrt_post_meta[featured_video]" value="<?php echo esc_url($meta['featured_video']); ?>" class="widefat" placeholder="<?php esc_attr_e('第 1 集视频 URL（直链）', 'aksrt'); ?>">

        <p><strong><?php esc_html_e('视频剧集列表', 'aksrt'); ?></strong></p>
        <?php
        $episodes = is_array($meta['featured_video_episode'] ?? null) ? $meta['featured_video_episode'] : [];
        // Always show at least 3 editable rows for new-route authoring.
        $rows = max(3, count($episodes));
        for ($i = 0; $i < $rows; $i++) :
            $ep = is_array($episodes[$i] ?? null) ? $episodes[$i] : [];
            $ep_url = (string) ($ep['url'] ?? '');
            $ep_title = (string) ($ep['title'] ?? '');
            ?>
            <p class="aksrt-episode-row">
                <input type="text" name="aksrt_post_meta[featured_video_episode][<?php echo (int) $i; ?>][title]" value="<?php echo esc_attr($ep_title); ?>" class="widefat" placeholder="<?php echo esc_attr(sprintf(__('第 %d 集标题（可选）', 'aksrt'), $i + 1)); ?>" style="margin-bottom:4px;">
                <input type="url" name="aksrt_post_meta[featured_video_episode][<?php echo (int) $i; ?>][url]" value="<?php echo esc_url($ep_url); ?>" class="widefat" placeholder="<?php echo esc_attr(sprintf(__('第 %d 集视频 URL', 'aksrt'), $i + 1)); ?>">
            </p>
        <?php endfor; ?>
        <small class="description"><?php esc_html_e('新路线：每行一集（标题 + URL）。留空 URL 的行会被忽略。第 1 集可与上方「特色视频」二选一填写。', 'aksrt'); ?></small>

        <hr>
        <p><strong><?php esc_html_e('手动计数覆盖', 'aksrt'); ?></strong></p>
        <p>
            <label><?php esc_html_e('阅读量', 'aksrt'); ?></label>
            <input type="number" name="aksrt_post_meta[views]" value="<?php echo esc_attr((string) (int) $meta['views']); ?>" class="widefat" min="0" step="1">
        </p>
        <p>
            <label><?php esc_html_e('点赞数', 'aksrt'); ?></label>
            <input type="number" name="aksrt_post_meta[likes]" value="<?php echo esc_attr((string) (int) $meta['likes']); ?>" class="widefat" min="0" step="1">
        </p>
        <small class="description"><?php esc_html_e('0 表示不覆盖，使用系统统计值。', 'aksrt'); ?></small>
        <?php
    }

    /**
     * Render the custom filter metabox (per-dimension value selectors).
     * §3.8 — stores values as individual post meta keys (_aksrt_cf_{dim_key}).
     */
    public function render_custom_filter_meta_box(WP_Post $post): void {
        wp_nonce_field('aksrt_custom_filter_meta', 'aksrt_custom_filter_meta_nonce');

        $filter_settings = class_exists('AKSRT_Settings')
            ? AKSRT_Settings::get_post_filter_settings()
            : ['custom_filter' => []];
        $dimensions = $filter_settings['custom_filter'];

        if (empty($dimensions)) {
            echo '<p class="description">' . esc_html__('尚未定义筛选维度，请前往 文章设置 → 高级筛选 添加。', 'aksrt') . '</p>';
            return;
        }

        foreach ($dimensions as $dim) :
            $meta_key = '_aksrt_cf_' . $dim['key'];
            $current = get_post_meta($post->ID, $meta_key, true);
            ?>
            <p>
                <label for="<?php echo esc_attr($meta_key); ?>"><strong><?php echo esc_html($dim['name']); ?></strong></label>
                <select name="<?php echo esc_attr($meta_key); ?>" id="<?php echo esc_attr($meta_key); ?>" class="widefat">
                    <option value=""><?php esc_html_e('未选择', 'aksrt'); ?></option>
                    <?php foreach ($dim['vals'] as $val) : ?>
                        <option value="<?php echo esc_attr($val['key']); ?>" <?php selected($current, $val['key']); ?>><?php echo esc_html($val['name']); ?></option>
                    <?php endforeach; ?>
                </select>
            </p>
            <?php
        endforeach;
    }

    /**
     * Save meta box data.
     */
    public function save_meta_box(int $post_id): void {
        // Save page meta (page_header_style / page_header_cover_img)
        if (isset($_POST['aksrt_page_meta_nonce']) && wp_verify_nonce($_POST['aksrt_page_meta_nonce'], 'aksrt_page_meta')) {
            if (!defined('DOING_AUTOSAVE') && current_user_can('edit_post', $post_id)) {
                $style = isset($_POST['page_header_style']) ? sanitize_key((string) $_POST['page_header_style']) : '';
                if (!in_array($style, ['', 'not', '1', '2', '3'], true)) {
                    $style = '';
                }
                if ($style !== '') {
                    update_post_meta($post_id, 'page_header_style', $style);
                } else {
                    delete_post_meta($post_id, 'page_header_style');
                }

                $cover = isset($_POST['page_header_cover_img']) ? esc_url_raw((string) $_POST['page_header_cover_img']) : '';
                if ($cover !== '') {
                    update_post_meta($post_id, 'page_header_cover_img', $cover);
                } else {
                    delete_post_meta($post_id, 'page_header_cover_img');
                }
            }
        }

        // Save post meta (aksrt_post_meta group)
        if (!isset($_POST['aksrt_post_meta_nonce'])) return;
        if (!wp_verify_nonce($_POST['aksrt_post_meta_nonce'], 'aksrt_post_meta')) return;
        if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) return;
        if (!current_user_can('edit_post', $post_id)) return;

        // Zibll show_layout (independent of list layout_override).
        $show_layout = isset($_POST['aksrt_show_layout']) ? sanitize_key((string) wp_unslash($_POST['aksrt_show_layout'])) : '';
        if (!in_array($show_layout, ['no_sidebar', 'sidebar_left', 'sidebar_right'], true)) {
            $show_layout = '';
        }
        if ($show_layout !== '') {
            update_post_meta($post_id, '_aksrt_show_layout', $show_layout);
        } else {
            delete_post_meta($post_id, '_aksrt_show_layout');
        }

        // §3.8 Quick / Bulk edit — separate code path (merge mode)
        if (!empty($_POST['aksrt_qe_flag'])) {
            $this->save_quick_edit($post_id);
            return;
        }

        $raw = $_POST['aksrt_post_meta'] ?? [];
        $sanitized = [
            'cover_images'      => isset($raw['cover_images']) ? sanitize_text_field($raw['cover_images']) : '',
            'custom_excerpt'    => isset($raw['custom_excerpt']) ? sanitize_textarea_field($raw['custom_excerpt']) : '',
            'layout_override'   => isset($raw['layout_override']) ? sanitize_key($raw['layout_override']) : '',
            'header_image_mode' => isset($raw['header_image_mode']) ? sanitize_key($raw['header_image_mode']) : '',
            // New route: '' follow | '1' force on | '0' force off.
            'show_toc'          => isset($raw['show_toc']) && in_array((string) $raw['show_toc'], ['', '0', '1'], true) ? (string) $raw['show_toc'] : '',
            'show_reading_progress' => isset($raw['show_reading_progress']) ? sanitize_key((string) $raw['show_reading_progress']) : '',
            'enable_lightbox'   => isset($raw['enable_lightbox']) ? sanitize_key((string) $raw['enable_lightbox']) : '',
            'show_related'      => isset($raw['show_related']) ? sanitize_key((string) $raw['show_related']) : '',
            'related_count'     => isset($raw['related_count']) ? (int) $raw['related_count'] : 0,
            'enable_like'       => isset($raw['enable_like']) ? sanitize_key((string) $raw['enable_like']) : '',
            'enable_favorite'   => isset($raw['enable_favorite']) ? sanitize_key((string) $raw['enable_favorite']) : '',
            'enable_share'      => isset($raw['enable_share']) ? sanitize_key((string) $raw['enable_share']) : '',
            'enable_print'      => isset($raw['enable_print']) ? sanitize_key((string) $raw['enable_print']) : '',
            'enable_pdf'        => isset($raw['enable_pdf']) ? sanitize_key((string) $raw['enable_pdf']) : '',
            'copyright_text'    => isset($raw['copyright_text']) ? sanitize_textarea_field($raw['copyright_text']) : '',
            'is_featured'       => !empty($raw['is_featured']),
            // §3.8 文章扩展字段
            'thumbnail_url'         => isset($raw['thumbnail_url']) ? esc_url_raw((string) $raw['thumbnail_url']) : '',
            'featured_slide'        => isset($raw['featured_slide']) ? sanitize_text_field($raw['featured_slide']) : '',
            'featured_video'        => isset($raw['featured_video']) ? esc_url_raw((string) $raw['featured_video']) : '',
            'featured_video_episode' => self::sanitize_video_episodes($raw['featured_video_episode'] ?? []),
            'subtitle'              => isset($raw['subtitle']) ? sanitize_text_field($raw['subtitle']) : '',
            'views'                 => isset($raw['views']) ? max(0, (int) $raw['views']) : 0,
            'likes'                 => isset($raw['likes']) ? max(0, (int) $raw['likes']) : 0,
            'maxheight'             => isset($raw['maxheight']) ? max(0, (int) $raw['maxheight']) : 0,
        ];

        $valid_modes = ['', 'card', 'list', 'mini', 'grid-cms'];
        if (!in_array($sanitized['layout_override'], $valid_modes, true)) {
            $sanitized['layout_override'] = '';
        }

        $valid_header_modes = ['', 'featured', 'auto', 'none'];
        if (!in_array($sanitized['header_image_mode'], $valid_header_modes, true)) {
            $sanitized['header_image_mode'] = '';
        }

        foreach (['show_reading_progress', 'enable_lightbox', 'show_related', 'enable_like', 'enable_favorite', 'enable_share', 'enable_print', 'enable_pdf'] as $toggle_key) {
            if (!in_array($sanitized[$toggle_key], ['', '0', '1'], true)) {
                $sanitized[$toggle_key] = '';
            }
        }

        $sanitized['related_count'] = max(0, min(20, (int) $sanitized['related_count']));

        update_post_meta($post_id, self::META_KEY, $sanitized);

        // §3.8 Save custom filter dimension values as individual post meta
        if (isset($_POST['aksrt_custom_filter_meta_nonce']) && wp_verify_nonce($_POST['aksrt_custom_filter_meta_nonce'], 'aksrt_custom_filter_meta')) {
            if (!defined('DOING_AUTOSAVE') && current_user_can('edit_post', $post_id)) {
                $cf_settings = class_exists('AKSRT_Settings')
                    ? AKSRT_Settings::get_post_filter_settings()
                    : ['custom_filter' => []];
                foreach ($cf_settings['custom_filter'] as $dim) {
                    $meta_key = '_aksrt_cf_' . $dim['key'];
                    $value = isset($_POST[$meta_key]) ? sanitize_key((string) $_POST[$meta_key]) : '';
                    if ($value !== '') {
                        update_post_meta($post_id, $meta_key, $value);
                    } else {
                        delete_post_meta($post_id, $meta_key);
                    }
                }
            }
        }
    }

    /**
     * §3.8 Add custom columns to the posts list table.
     */
    public function add_columns(array $columns): array {
        $columns['aksrt_views'] = __('阅读量', 'aksrt');
        $columns['aksrt_likes'] = __('点赞数', 'aksrt');
        $columns['aksrt_sales'] = __('销售数据', 'aksrt');
        return $columns;
    }

    /**
     * §3.8 Render custom column content.
     */
    public function render_column(string $column, int $post_id): void {
        $meta = self::get_meta($post_id);
        if ($column === 'aksrt_views') {
            $views = (int) ($meta['views'] ?? 0);
            echo esc_html($views > 0 ? (string) $views : '—');
        } elseif ($column === 'aksrt_likes') {
            $likes = (int) ($meta['likes'] ?? 0);
            $layout = esc_attr($meta['layout_override'] ?? '');
            $toc = esc_attr($meta['show_toc'] ?? '');
            $mh = (int) ($meta['maxheight'] ?? 0);
            echo '<span class="aksrt-col-data" data-views="' . (int) ($meta['views'] ?? 0) . '" data-likes="' . $likes . '" data-layout="' . $layout . '" data-toc="' . $toc . '" data-maxheight="' . $mh . '">' . esc_html($likes > 0 ? (string) $likes : '—') . '</span>';
        } elseif ($column === 'aksrt_sales') {
            $this->render_sales_column($post_id);
        }
    }

    /**
     * Content-pay sales summary for posts list (zibll 销售数据 column parity).
     */
    private function render_sales_column(int $post_id): void {
        if (!function_exists('aksrt_get_pay_meta') || !class_exists('AKSRT_Domain_Model')) {
            echo '—';
            return;
        }
        $pay = aksrt_get_pay_meta($post_id);
        $pay_type = AKSRT_Domain_Model::normalize_pay_type((string) ($pay['pay_type'] ?? AKSRT_Domain_Model::PAY_TYPE_NO));
        if ($pay_type === AKSRT_Domain_Model::PAY_TYPE_NO) {
            echo '<span class="description">' . esc_html__('免费', 'aksrt') . '</span>';
            return;
        }
        $labels = AKSRT_Domain_Model::pay_type_labels();
        $type_label = $labels[$pay_type] ?? $pay_type;
        $modo = (($pay['pay_modo'] ?? '0') === 'points') ? 'points' : '0';
        if ($modo === 'points') {
            $price_text = sprintf(__('%d 积分', 'aksrt'), (int) ceil((float) ($pay['points_price'] ?? $pay['price'] ?? 0)));
        } else {
            $price_text = '¥' . number_format((float) ($pay['price'] ?? 0), 2);
        }
        $meta_sales = (int) get_post_meta($post_id, AKSRT_Domain_Model::RESOURCE_SALES_VOLUME_KEY, true);
        $db_sales = 0;
        $revenue  = 0.0;
        if (class_exists('AKSRT_Order_Repository')) {
            $map = AKSRT_Order_Repository::get_instance()->get_content_sales_map(
                [$post_id],
                AKSRT_Domain_Model::ORDER_PRODUCT_RESOURCE
            );
            if (isset($map[$post_id])) {
                $db_sales = (int) ($map[$post_id]['sales_count'] ?? 0);
                $revenue  = (float) ($map[$post_id]['revenue'] ?? 0);
            }
        }
        $orders_url = admin_url('admin.php?page=aksrt_orders&product_type=resource&product_id=' . $post_id);
        $products_url = admin_url('admin.php?page=aksrt_pay_products&s=' . $post_id);

        echo '<div style="font-size:12px;line-height:1.5;">';
        echo '<strong style="color:#0c9cc8;">' . esc_html((string) $type_label) . '</strong>';
        echo '<br>' . esc_html($price_text);
        echo '<br>' . esc_html(sprintf(__('Meta销量 %d', 'aksrt'), max(0, $meta_sales)));
        if ($db_sales > 0) {
            printf(
                '<br><a href="%s" title="%s">%s</a>',
                esc_url($orders_url),
                esc_attr__('查看销售明细', 'aksrt'),
                esc_html(sprintf(__('真实销量 %d · ¥%s', 'aksrt'), $db_sales, number_format($revenue, 2)))
            );
        } else {
            echo '<br><span class="description">' . esc_html__('暂无订单', 'aksrt') . '</span>';
        }
        echo '<br><a href="' . esc_url($products_url) . '">' . esc_html__('付费文章', 'aksrt') . '</a>';
        echo '</div>';
    }

    /**
     * §3.8 Render quick edit and bulk edit fields.
     */
    public function render_quick_edit(string $column_name, string $post_type): void {
        if ($column_name !== 'aksrt_views' || $post_type !== 'post') {
            return;
        }
        wp_nonce_field('aksrt_post_meta', 'aksrt_post_meta_nonce_qe');
        ?>
        <fieldset class="inline-edit-col-right" id="aksrt-quick-edit">
            <div class="inline-edit-col">
                <h4><?php esc_html_e('AKSRT 文章设置', 'aksrt'); ?></h4>
                <input type="hidden" name="aksrt_qe_flag" value="1">
                <label class="alignleft">
                    <span class="title"><?php esc_html_e('阅读量', 'aksrt'); ?></span>
                    <input type="number" name="aksrt_qe_views" min="0" step="1" value="" class="aksrt-qe-views">
                </label>
                <label class="alignleft">
                    <span class="title"><?php esc_html_e('点赞数', 'aksrt'); ?></span>
                    <input type="number" name="aksrt_qe_likes" min="0" step="1" value="" class="aksrt-qe-likes">
                </label>
                <label class="alignleft">
                    <span class="title"><?php esc_html_e('布局', 'aksrt'); ?></span>
                    <select name="aksrt_qe_layout" class="aksrt-qe-layout">
                        <option value="-1"><?php esc_html_e('— 不更改 —', 'aksrt'); ?></option>
                        <option value=""><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
                        <option value="card"><?php esc_html_e('卡片', 'aksrt'); ?></option>
                        <option value="list"><?php esc_html_e('列表', 'aksrt'); ?></option>
                        <option value="mini"><?php esc_html_e('迷你', 'aksrt'); ?></option>
                        <option value="grid-cms"><?php esc_html_e('CMS网格', 'aksrt'); ?></option>
                    </select>
                </label>
                <label class="alignleft">
                    <span class="title"><?php esc_html_e('目录树', 'aksrt'); ?></span>
                    <select name="aksrt_qe_toc" class="aksrt-qe-toc">
                        <option value="-1"><?php esc_html_e('— 不更改 —', 'aksrt'); ?></option>
                        <option value=""><?php esc_html_e('跟随全局', 'aksrt'); ?></option>
                        <option value="1"><?php esc_html_e('显示', 'aksrt'); ?></option>
                        <option value="0"><?php esc_html_e('隐藏', 'aksrt'); ?></option>
                    </select>
                </label>
                <label class="alignleft">
                    <span class="title"><?php esc_html_e('限高(px)', 'aksrt'); ?></span>
                    <input type="number" name="aksrt_qe_maxheight" min="0" step="100" value="" class="aksrt-qe-maxheight" placeholder="<?php esc_attr_e('0=不限', 'aksrt'); ?>">
                </label>
                <br class="clear">
            </div>
        </fieldset>
        <?php
    }

    /**
     * §3.8 Quick / Bulk edit merge-mode save.
     * Only updates fields that were actually submitted (non-sentinel, non-empty).
     * Existing meta values for omitted fields are preserved.
     */
    private function save_quick_edit(int $post_id): void {
        $existing = self::get_meta($post_id);

        $views = isset($_POST['aksrt_qe_views']) && $_POST['aksrt_qe_views'] !== ''
            ? max(0, (int) $_POST['aksrt_qe_views'])
            : (int) ($existing['views'] ?? 0);

        $likes = isset($_POST['aksrt_qe_likes']) && $_POST['aksrt_qe_likes'] !== ''
            ? max(0, (int) $_POST['aksrt_qe_likes'])
            : (int) ($existing['likes'] ?? 0);

        $layout = $existing['layout_override'] ?? '';
        if (isset($_POST['aksrt_qe_layout']) && $_POST['aksrt_qe_layout'] !== '-1') {
            $layout = sanitize_key((string) $_POST['aksrt_qe_layout']);
            if (!in_array($layout, ['', 'card', 'list', 'mini', 'grid-cms'], true)) {
                $layout = $existing['layout_override'] ?? '';
            }
        }

        $toc = $existing['show_toc'] ?? '';
        if (isset($_POST['aksrt_qe_toc']) && $_POST['aksrt_qe_toc'] !== '-1') {
            $toc_v = sanitize_key((string) $_POST['aksrt_qe_toc']);
            $toc = in_array($toc_v, ['', '0', '1'], true) ? $toc_v : ($existing['show_toc'] ?? '');
        }

        $mh = isset($_POST['aksrt_qe_maxheight']) && $_POST['aksrt_qe_maxheight'] !== ''
            ? max(0, (int) $_POST['aksrt_qe_maxheight'])
            : (int) ($existing['maxheight'] ?? 0);

        $existing['views'] = $views;
        $existing['likes'] = $likes;
        $existing['layout_override'] = $layout;
        $existing['show_toc'] = $toc;
        $existing['maxheight'] = $mh;

        update_post_meta($post_id, self::META_KEY, $existing);
    }

    /**
     * §3.8 Output inline JS on edit.php to populate quick edit fields from column data attributes.
     */
    public function admin_quick_edit_script(): void {
        $screen = function_exists('get_current_screen') ? get_current_screen() : null;
        if (!$screen || $screen->base !== 'edit' || $screen->post_type !== 'post') {
            return;
        }
        ?>
        <script>
        (function () {
            var wp_inline_edit = window.inlineEditPost ? window.inlineEditPost.edit : null;
            if (!wp_inline_edit) return;

            window.inlineEditPost.edit = function (id) {
                wp_inline_edit.apply(this, arguments);

                var postId = 0;
                if (typeof id === 'object') {
                    postId = parseInt(this.getId(id), 10);
                }
                if (!postId) return;

                var row = document.getElementById('post-' + postId);
                if (!row) return;

                var viewsEl = row.querySelector('.column-aksrt_views');
                var likesEl = row.querySelector('.column-aksrt_likes');
                var data = (likesEl && likesEl.querySelector('.aksrt-col-data'))
                    || (viewsEl && viewsEl.querySelector('.aksrt-col-data'));
                if (!data) return;

                var form = document.getElementById('edit-' + postId);
                if (!form) return;

                var v = data.getAttribute('data-views') || '';
                var l = data.getAttribute('data-likes') || '';
                var layout = data.getAttribute('data-layout') || '';
                var toc = data.getAttribute('data-toc') || '';
                var mh = data.getAttribute('data-maxheight') || '';

                var qv = form.querySelector('.aksrt-qe-views');
                var ql = form.querySelector('.aksrt-qe-likes');
                if (qv) qv.value = v;
                if (ql) ql.value = l;

                var qLayout = form.querySelector('.aksrt-qe-layout');
                if (qLayout) qLayout.value = layout;
                var qToc = form.querySelector('.aksrt-qe-toc');
                if (qToc) qToc.value = toc;
                var qMh = form.querySelector('.aksrt-qe-maxheight');
                if (qMh) qMh.value = mh;
            };
        })();
        </script>
        <?php
    }
}