<?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;

/**
 * 合集插件 - 创建专题合集，支持短代码展示
 *
 * @package Collection
 * @author 石头厝
 * @version 1.2.0
 * @link https://www.shitoucuo.com/
 */
class Collection_Plugin implements Typecho_Plugin_Interface
{
    /**
     * 数据库文件路径
     */
    private static $dbPath;
    
    /**
     * 是否已添加CSS样式
     */
    private static $cssAdded = false;
    
    /**
     * 是否已添加JS脚本
     */
    private static $jsAdded = false;
    
    /**
     * 合集配置数组
     */
    private static $collectionConfigs = array();

    /**
     * 激活插件方法
     */
    public static function activate()
    {
        // 初始化数据库
        self::initDbPath();
        self::initDatabase();
        self::migrateDatabase();

        // 添加后台管理菜单
        Helper::addPanel(3, 'Collection/Manage.php', '合集管理', '合集管理', 'administrator');

        // 添加动作处理
        Helper::addAction('collection', 'Collection_Action');

        // 注册路由
        Helper::addRoute('collection_action', '/action/collection', 'Collection_Action', 'action');

        // 注册短代码解析
        Typecho_Plugin::factory('Widget_Abstract_Contents')->contentEx = array(__CLASS__, 'parseCollectionShortcode');
        Typecho_Plugin::factory('Widget_Abstract_Contents')->excerptEx = array(__CLASS__, 'parseCollectionShortcode');

        // 注册文章保存时的处理
        Typecho_Plugin::factory('Widget_Abstract_Contents')->save = array(__CLASS__, 'onPostSave');
        Typecho_Plugin::factory('Widget_Abstract_Contents')->write = array(__CLASS__, 'onPostWrite');
        
        // 只保留footer钩子来输出JS，移除header钩子
        Typecho_Plugin::factory('Widget_Archive')->footer = array(__CLASS__, 'footer');

        return _t('合集插件已激活');
    }

    /**
     * 禁用插件方法
     */
    public static function deactivate()
    {
        // 移除管理菜单
        Helper::removePanel(3, 'Collection/Manage.php');
        
        // 清理数据库记录
        try {
            $db = Typecho_Db::get();
            $db->query($db->delete('table.options')
                ->where('name = ?', 'panelTable:Collection/Manage.php'));
        } catch (Exception $e) {
            // 忽略错误
        }
        
        Helper::removeAction('collection');
        Helper::removeRoute('collection_action');
        
        return _t('合集插件已禁用');
    }

    /**
     * 获取插件配置面板
     */
    public static function config(Typecho_Widget_Helper_Form $form)
    {
        // 显示模式
        $displayMode = new Typecho_Widget_Helper_Form_Element_Radio('displayMode', array(
            'collapsible' => '可折叠模式（默认）',
            'expanded' => '始终展开',
            'grid' => '网格布局'
        ), 'collapsible', _t('合集展示模式'));
        $form->addInput($displayMode);

        // 是否显示发布时间
        $showDate = new Typecho_Widget_Helper_Form_Element_Radio('showDate', array(
            1 => '是',
            0 => '否'
        ), 1, _t('显示内容发布时间'));
        $form->addInput($showDate);
        
        // 是否显示内容摘要
        $showExcerpt = new Typecho_Widget_Helper_Form_Element_Radio('showExcerpt', array(
            1 => '是',
            0 => '否'
        ), 1, _t('显示内容摘要'));
        $form->addInput($showExcerpt);
        
        // 是否显示评论数
        $showCommentCount = new Typecho_Widget_Helper_Form_Element_Radio('showCommentCount', array(
            1 => '是',
            0 => '否'
        ), 1, _t('显示评论数'));
        $form->addInput($showCommentCount);
        
        // 默认排序方式
        $defaultSort = new Typecho_Widget_Helper_Form_Element_Select('defaultSort', array(
            'created_desc' => '发布时间倒序',
            'created_asc' => '发布时间正序',
            'title_asc' => '标题正序',
            'title_desc' => '标题倒序',
            'custom' => '自定义顺序'
        ), 'created_desc', _t('内容默认排序'));
        $form->addInput($defaultSort);
    }

    /**
     * 个人用户的配置面板
     */
    public static function personalConfig(Typecho_Widget_Helper_Form $form) {}

    /**
     * 初始化数据库路径
     */
    private static function initDbPath()
    {
        $dbDir = __DIR__ . '/db';

        // 确保目录存在
        if (!is_dir($dbDir)) {
            @mkdir($dbDir, 0755, true);
        }

        $dbFiles = glob($dbDir . '/collection_*.db');
        if (!empty($dbFiles)) {
            self::$dbPath = $dbFiles[0];
        } else {
            $randomStr = substr(md5(uniqid(rand(), true)), 0, 10);
            self::$dbPath = $dbDir . '/collection_' . $randomStr . '.db';
        }
    }

    /**
     * 初始化数据库
     */
    private static function initDatabase()
    {
        if (empty(self::$dbPath)) {
            self::initDbPath();
        }

        try {
            $db = new PDO('sqlite:' . self::$dbPath);
            $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

            // 检查表是否存在
            $tableCheck = $db->query("SELECT name FROM sqlite_master WHERE type='table' AND name='plugin_collection'");
            if (!$tableCheck->fetch()) {
                // 创建表
                $db->exec("CREATE TABLE plugin_collection (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    name TEXT NOT NULL,
                    description TEXT,
                    related_items TEXT,
                    sort_order TEXT DEFAULT 'created_desc',
                    collection_type TEXT DEFAULT 'article',
                    is_active INTEGER DEFAULT 1,
                    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
                    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
                )");

                // 创建更新时间触发器
                $db->exec("CREATE TRIGGER IF NOT EXISTS update_collection_time
                AFTER UPDATE ON plugin_collection
                BEGIN
                    UPDATE plugin_collection SET updated_at = CURRENT_TIMESTAMP WHERE id = NEW.id;
                END");
            }

            $db = null;
        } catch (PDOException $e) {
            error_log('Collection: 数据库初始化失败: ' . $e->getMessage());
        }
    }

    /**
     * 数据库迁移
     */
    private static function migrateDatabase()
    {
        try {
            $db = new PDO('sqlite:' . self::$dbPath);
            $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

            // 检查表结构
            $stmt = $db->prepare("PRAGMA table_info(plugin_collection)");
            $stmt->execute();
            $columns = $stmt->fetchAll(PDO::FETCH_ASSOC);

            // 检查字段是否存在
            $hasSortOrder = false;
            $hasIsActive = false;
            $hasCollectionType = false;

            foreach ($columns as $column) {
                if ($column['name'] === 'sort_order') {
                    $hasSortOrder = true;
                }
                if ($column['name'] === 'is_active') {
                    $hasIsActive = true;
                }
                if ($column['name'] === 'collection_type') {
                    $hasCollectionType = true;
                }
            }

            // 添加缺失的字段
            if (!$hasSortOrder) {
                $db->exec("ALTER TABLE plugin_collection ADD COLUMN sort_order TEXT DEFAULT 'created_desc'");
            }

            if (!$hasIsActive) {
                $db->exec("ALTER TABLE plugin_collection ADD COLUMN is_active INTEGER DEFAULT 1");
            }

            if (!$hasCollectionType) {
                $db->exec("ALTER TABLE plugin_collection ADD COLUMN collection_type TEXT DEFAULT 'article'");
                // 重命名相关字段
                try {
                    $db->exec("ALTER TABLE plugin_collection RENAME COLUMN related_articles TO related_items");
                } catch (Exception $e) {
                    // 如果重命名失败，可能是已经存在或者已经重命名过了
                }
            }

            $db = null;
        } catch (PDOException $e) {
            error_log('Collection数据库迁移失败: ' . $e->getMessage());
        }
    }

    /**
     * 获取数据库连接
     */
    public static function getDbConnection()
    {
        if (empty(self::$dbPath)) {
            self::initDbPath();
        }

        if (!file_exists(self::$dbPath)) {
            self::initDatabase();
        }

        try {
            $db = new PDO('sqlite:' . self::$dbPath);
            $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            return $db;
        } catch (PDOException $e) {
            throw new Exception('数据库连接失败: ' . $e->getMessage());
        }
    }

    /**
     * 通过合集ID获取合集信息
     */
    public static function getCollectionById($id)
    {
        if (empty($id)) {
            return null;
        }

        try {
            $db = self::getDbConnection();
            $stmt = $db->prepare("SELECT * FROM plugin_collection WHERE id = ? AND is_active = 1");
            $stmt->execute(array($id));
            $collection = $stmt->fetch(PDO::FETCH_ASSOC);

            if ($collection) {
                // 处理关联内容
                if (!empty($collection['related_items'])) {
                    $itemIds = explode(',', $collection['related_items']);
                    $itemIds = array_map('trim', $itemIds);
                    $itemIds = array_filter($itemIds);
                    
                    if ($collection['collection_type'] == 'comment') {
                        // 获取关联评论信息
                        $commentsInfo = array();
                        foreach ($itemIds as $coid) {
                            if (is_numeric($coid)) {
                                $commentInfo = self::getCommentInfo($coid);
                                if (!empty($commentInfo['author'])) {
                                    $commentsInfo[] = array(
                                        'author' => $commentInfo['author'],
                                        'content' => $commentInfo['text'],
                                        'created' => $commentInfo['created'],
                                        'link' => $commentInfo['link'],
                                        'excerpt' => self::getExcerpt($commentInfo['text']),
                                        'coid' => $coid,
                                        'url' => $commentInfo['url'] // 用户网站链接
                                    );
                                }
                            }
                        }
                        $collection['related_items_info'] = $commentsInfo;
                    } elseif ($collection['collection_type'] == 'user') {
                        // 获取关联用户信息
                        $usersInfo = array();
                        foreach ($itemIds as $uid) {
                            if (is_numeric($uid)) {
                                $userInfo = self::getUserInfo($uid);
                                if (!empty($userInfo['name'])) {
                                    $usersInfo[] = array(
                                        'name' => $userInfo['name'],
                                        'url' => $userInfo['url'],
                                        'created' => $userInfo['created'],
                                        'commentCount' => $userInfo['commentCount'],
                                        'recentActivity' => $userInfo['recentActivity'],
                                        'uid' => $uid
                                    );
                                }
                            }
                        }
                        $collection['related_items_info'] = $usersInfo;
                    } else {
                        // 获取关联文章信息
                        $articlesInfo = array();
                        foreach ($itemIds as $cid) {
                            if (is_numeric($cid)) {
                                $articleInfo = self::getArticleInfo($cid);
                                if (!empty($articleInfo['title'])) {
                                    $articlesInfo[] = array(
                                        'title' => $articleInfo['title'],
                                        'link' => $articleInfo['link'],
                                        'created' => $articleInfo['created'],
                                        'excerpt' => self::getExcerpt($articleInfo['text']),
                                        'cover' => !empty($articleInfo['images']) ? $articleInfo['images'][0] : '',
                                        'commentCount' => self::getArticleCommentCount($cid),
                                        'cid' => $cid
                                    );
                                }
                            }
                        }
                        $collection['related_items_info'] = $articlesInfo;
                    }
                    
                    // 根据排序方式排序
                    $collection['related_items_info'] = self::sortItems($collection['related_items_info'], $collection['sort_order'], $collection['collection_type']);
                }

                return $collection;
            }
        } catch (Exception $e) {
            error_log('Collection: 获取合集信息失败: ' . $e->getMessage());
        }

        return null;
    }

    /**
     * 获取所有合集
     */
    public static function getAllCollections()
    {
        try {
            $db = self::getDbConnection();
            $stmt = $db->query("SELECT * FROM plugin_collection WHERE is_active = 1 ORDER BY collection_type, created_at DESC");
            $collections = $stmt->fetchAll(PDO::FETCH_ASSOC);
            
            return $collections;
        } catch (Exception $e) {
            error_log('Collection: 获取所有合集失败: ' . $e->getMessage());
            return array();
        }
    }

    /**
     * 通过文章CID获取文章信息和图片
     */
    public static function getArticleInfo($cid)
    {
        $result = array(
            'title' => '',
            'link' => '',
            'text' => '',
            'images' => array(),
            'tags' => array(),
            'created' => ''
        );

        if (empty($cid)) {
            return $result;
        }

        try {
            $db = Typecho_Db::get();
            $prefix = $db->getPrefix();
            
            // 使用Typecho_Db的正确查询方法
            $article = $db->fetchRow($db->select()
                ->from('table.contents')
                ->where('cid = ?', $cid)
                ->where('type = ?', 'post')
                ->where('status = ?', 'publish')
                ->limit(1));

            if ($article) {
                $result['title'] = $article['title'];
                $result['link'] = self::getPostUrlByCid($cid);
                $result['text'] = $article['text'];
                $result['created'] = $article['created'];
                $result['images'] = self::getPostImagesByCid($cid);
                $result['tags'] = self::getPostTagsByCid($cid);
            }
        } catch (Exception $e) {
            error_log('Collection: 获取文章信息失败: ' . $e->getMessage());
        }

        return $result;
    }

    /**
     * 通过评论COID获取评论信息
     */
    public static function getCommentInfo($coid)
    {
        $result = array(
            'author' => '',
            'text' => '',
            'link' => '',
            'created' => '',
            'parent' => '',
            'mail' => '',
            'url' => ''
        );

        if (empty($coid)) {
            return $result;
        }

        try {
            $db = Typecho_Db::get();
            
            // 获取评论信息
            $comment = $db->fetchRow($db->select()
                ->from('table.comments')
                ->where('coid = ?', $coid)
                ->where('status = ?', 'approved')
                ->limit(1));

            if ($comment) {
                $result['author'] = $comment['author'];
                $result['text'] = $comment['text'];
                $result['created'] = $comment['created'];
                $result['mail'] = $comment['mail'];
                $result['url'] = $comment['url'];
                $result['parent'] = $comment['parent'];
                
                // 获取评论所属文章信息以生成链接
                $post = $db->fetchRow($db->select('slug', 'type', 'created')
                    ->from('table.contents')
                    ->where('cid = ?', $comment['cid']));
                
                if ($post) {
                    $result['link'] = self::getPostUrlByCid($comment['cid']) . '#comment-' . $coid;
                }
            }
        } catch (Exception $e) {
            error_log('Collection: 获取评论信息失败: ' . $e->getMessage());
        }

        return $result;
    }

    /**
     * 通过用户UID获取用户信息
     */
    public static function getUserInfo($uid)
    {
        $result = array(
            'name' => '',
            'url' => '',
            'mail' => '',
            'created' => '',
            'recentActivity' => '',
            'commentCount' => 0
        );

        if (empty($uid)) {
            return $result;
        }

        try {
            $db = Typecho_Db::get();
            
            // 获取用户信息
            $user = $db->fetchRow($db->select()
                ->from('table.users')
                ->where('uid = ?', $uid)
                ->limit(1));

            if ($user) {
                $result['name'] = $user['name'];
                $result['url'] = $user['url'];
                $result['mail'] = $user['mail'];
                $result['created'] = $user['created'];
                
                // 获取用户最近活跃时间（如果有的话）
                if (isset($user['logged']) && $user['logged']) {
                    $result['recentActivity'] = date('Y-m-d', $user['logged']);
                } elseif (isset($user['activated']) && $user['activated']) {
                    $result['recentActivity'] = date('Y-m-d', $user['activated']);
                }
                
                // 获取用户评论总数 - 修复语法错误
                $commentCountQuery = $db->select('COUNT(*)')
                    ->from('table.comments')
                    ->where('authorId = ?', $uid)
                    ->where('status = ?', 'approved');
                
                $commentCount = $db->fetchRow($commentCountQuery);
                
                if ($commentCount) {
                    $result['commentCount'] = intval($commentCount['COUNT(*)']);
                }
            }
        } catch (Exception $e) {
            error_log('Collection: 获取用户信息失败: ' . $e->getMessage());
        }

        return $result;
    }

    /**
     * 获取文章评论数
     */
    private static function getArticleCommentCount($cid)
    {
        try {
            $db = Typecho_Db::get();
            
            $countQuery = $db->select('COUNT(*)')
                ->from('table.comments')
                ->where('cid = ?', $cid)
                ->where('status = ?', 'approved');
                
            $count = $db->fetchRow($countQuery);
            
            return $count ? intval($count['COUNT(*)']) : 0;
        } catch (Exception $e) {
            error_log('Collection: 获取文章评论数失败: ' . $e->getMessage());
            return 0;
        }
    }

    /**
     * 通过文章CID获取文章URL
     */
    public static function getPostUrlByCid($cid)
    {
        try {
            $db = Typecho_Db::get();
            
            $row = $db->fetchRow($db->select('slug', 'type', 'created')
                ->from('table.contents')
                ->where('cid = ?', $cid)
                ->where('status = ?', 'publish'));

            if (!$row) {
                return '';
            }

            // 获取文章分类
            $category = '';
            $categories = $db->fetchAll($db->select('slug')
                ->from('table.metas')
                ->join('table.relationships', 'table.metas.mid = table.relationships.mid')
                ->where('table.relationships.cid = ?', $cid)
                ->where('table.metas.type = ?', 'category')
                ->order('table.metas.order', Typecho_Db::SORT_ASC));

            if (!empty($categories)) {
                $category = $categories[0]['slug'];
            }

            // 准备URL参数
            $date = getdate($row['created']);
            $params = array(
                'cid' => $cid,
                'slug' => $row['slug'],
                'category' => $category,
                'directory' => $category,
                'year' => $date['year'],
                'month' => str_pad($date['mon'], 2, '0', STR_PAD_LEFT),
                'day' => str_pad($date['mday'], 2, '0', STR_PAD_LEFT)
            );

            $options = Typecho_Widget::widget('Widget_Options');
            $permalinkStructure = '';

            if (isset($options->permalink)) {
                $permalinkStructure = $options->permalink;
            }

            if (empty($permalinkStructure)) {
                return Typecho_Router::url($row['type'], $row, $options->index);
            }

            $url = $permalinkStructure;
            $url = preg_replace('/\[year:digital:4\]/', $params['year'], $url);
            $url = preg_replace('/\[month:digital:2\]/', $params['month'], $url);
            $url = preg_replace('/\[day:digital:2\]/', $params['day'], $url);
            $url = preg_replace('/\[slug\]/', $params['slug'], $url);
            $url = preg_replace('/\[cid\]/', $params['cid'], $url);
            $url = preg_replace('/\[category\]/', $params['category'], $url);
            $url = preg_replace('/\[directory\]/', $params['directory'], $url);

            if (strpos($url, '/') !== 0) {
                $url = '/' . $url;
            }

            return rtrim($options->siteUrl, '/') . $url;

        } catch (Exception $e) {
            error_log("Collection: 获取文章 URL 失败: " . $e->getMessage());
        }

        return '';
    }

    /**
     * 通过文章CID获取文章中的图片
     */
    public static function getPostImagesByCid($cid)
    {
        try {
            $db = Typecho_Db::get();
            
            $content = $db->fetchRow($db->select('text')
                ->from('table.contents')
                ->where('cid = ?', $cid)
                ->where('type = ?', 'post')
                ->where('status = ?', 'publish'));

            if (!$content) {
                return array();
            }

            $images = array();
            $text = $content['text'];

            // 标准img标签
            preg_match_all('/<img[^>]+src=[\'"]([^\'"]+)[\'"][^>]*>/i', $text, $matches1);
            if (isset($matches1[1]) && !empty($matches1[1])) {
                foreach($matches1[1] as $imageUrl) {
                    $images[] = self::processImageUrl($imageUrl);
                }
            }

            // markdown图片语法
            preg_match_all('/!\[[^\]]*\]\(([^)]+)\)/i', $text, $matches2);
            if (isset($matches2[1]) && !empty($matches2[1])) {
                foreach($matches2[1] as $imageUrl) {
                    $images[] = self::processImageUrl($imageUrl);
                }
            }

            // 去重并过滤空值
            $images = array_filter(array_unique($images));
            $images = array_slice($images, 0, 4);

            return $images;
        } catch (Exception $e) {
            error_log('Collection: 获取文章图片失败: ' . $e->getMessage());
            return array();
        }
    }

    /**
     * 处理图片URL
     */
    private static function processImageUrl($imageUrl)
    {
        if (strpos($imageUrl, 'http') !== 0) {
            $options = Typecho_Widget::widget('Widget_Options');
            $imageUrl = Typecho_Common::url($imageUrl, $options->siteUrl);
        }

        return $imageUrl;
    }

    /**
     * 通过文章CID获取文章标签
     */
    public static function getPostTagsByCid($cid)
    {
        try {
            $db = Typecho_Db::get();
            
            $tags = $db->fetchAll($db->select('table.metas.name', 'table.metas.slug')
                ->from('table.metas')
                ->join('table.relationships', 'table.metas.mid = table.relationships.mid')
                ->where('table.relationships.cid = ?', $cid)
                ->where('table.metas.type = ?', 'tag')
                ->order('table.metas.order', Typecho_Db::SORT_ASC));

            $tagNames = array();
            if (!empty($tags)) {
                foreach ($tags as $tag) {
                    $tagNames[] = $tag['name'];
                }
            }

            return $tagNames;
        } catch (Exception $e) {
            error_log('Collection: 获取文章标签失败: ' . $e->getMessage());
            return array();
        }
    }

    /**
     * 获取内容摘要
     */
    private static function getExcerpt($content, $length = 100)
    {
        $text = strip_tags($content);
        $text = preg_replace('/\s+/', ' ', $text);
        
        if (mb_strlen($text, 'UTF-8') > $length) {
            $text = mb_substr($text, 0, $length, 'UTF-8') . '...';
        }
        
        return $text;
    }

    /**
     * 排序内容
     */
    private static function sortItems($items, $sortOrder, $collectionType)
    {
        if (empty($items) || count($items) <= 1) {
            return $items;
        }
        
        usort($items, function($a, $b) use ($sortOrder, $collectionType) {
            switch($sortOrder) {
                case 'created_desc':
                    return ($b['created'] ?? 0) - ($a['created'] ?? 0);
                case 'created_asc':
                    return ($a['created'] ?? 0) - ($b['created'] ?? 0);
                case 'title_asc':
                    if ($collectionType === 'user') {
                        return strcmp($a['name'] ?? '', $b['name'] ?? '');
                    } else {
                        return strcmp($a['title'] ?? '', $b['title'] ?? '');
                    }
                case 'title_desc':
                    if ($collectionType === 'user') {
                        return strcmp($b['name'] ?? '', $a['name'] ?? '');
                    } else {
                        return strcmp($b['title'] ?? '', $a['title'] ?? '');
                    }
                case 'name_asc':
                    return strcmp($a['name'] ?? '', $b['name'] ?? '');
                case 'name_desc':
                    return strcmp($b['name'] ?? '', $a['name'] ?? '');
                case 'comments_desc':
                    return ($b['commentCount'] ?? 0) - ($a['commentCount'] ?? 0);
                case 'comments_asc':
                    return ($a['commentCount'] ?? 0) - ($b['commentCount'] ?? 0);
                default:
                    // 自定义顺序保持原样
                    return 0;
            }
        });
        
        return $items;
    }

    /**
     * 解析文章内容中的合集短代码
     */
    public static function parseCollectionShortcode($content, $widget, $lastResult)
    {
        $content = empty($lastResult) ? $content : $lastResult;
        
        $pattern = '/\{collection-(\d+)\}/i';
        
        if (preg_match_all($pattern, $content, $matches)) {
            $currentCid = isset($widget->cid) ? $widget->cid : 0;
            
            // 收集所有需要渲染的合集ID
            $collectionIds = $matches[1];
            $collectionIndex = 0;
            
            foreach ($collectionIds as $index => $collectionId) {
                // 渲染单个合集卡片，同时获取CSS样式
                list($collectionHtml, $cssStyle, $config) = self::renderSingleCollectionCard($collectionId, $collectionIndex);
                
                if ($collectionHtml) {
                    // 将CSS内联到HTML中（避免与足迹地图冲突）
                    $collectionHtml = '<style>' . $cssStyle . '</style>' . $collectionHtml;
                    $content = str_replace($matches[0][$index], $collectionHtml, $content);
                    
                    if ($config) {
                        self::$collectionConfigs[] = $config;
                    }
                    
                    if ($currentCid > 0) {
                        self::syncRelatedItems($collectionId, $currentCid, 'article');
                    }
                } else {
                    $content = str_replace($matches[0][$index], 
                        '<div class="collection-error">合集ID ' . $collectionId . ' 不存在</div>', 
                        $content);
                }
                
                $collectionIndex++;
            }
        }
        
        return $content;
    }

    /**
     * 渲染单个合集卡片HTML
     */
    private static function renderSingleCollectionCard($collectionId, $index)
    {
        $collection = self::getCollectionById($collectionId);
        if (!$collection) {
            return array(null, null, null);
        }

        $options = Typecho_Widget::widget('Widget_Options')->plugin('Collection');
        
        $displayMode = isset($options->displayMode) ? $options->displayMode : 'collapsible';
        $showDate = isset($options->showDate) ? (bool)$options->showDate : true;
        $showExcerpt = isset($options->showExcerpt) ? (bool)$options->showExcerpt : true;
        $showCommentCount = isset($options->showCommentCount) ? (bool)$options->showCommentCount : true;

        $items = isset($collection['related_items_info']) ? $collection['related_items_info'] : array();
        $itemsCount = count($items);
        $collectionType = $collection['collection_type'];

        $uniqueId = 'collection_' . $collectionId . '_' . $index;
        $collectionCardId = 'collection-card-' . $uniqueId;

        // 构建统计文本 - 根据合集类型使用正确的量词
        $countText = '';
        if ($collectionType === 'comment') {
            $countText = '已收录' . $itemsCount . '条评论';
        } elseif ($collectionType === 'user') {
            $countText = '已收录' . $itemsCount . '位用户';
        } else {
            $countText = '已收录' . $itemsCount . '篇文章';
        }

        $html = '
        <div class="collection-card" id="' . $collectionCardId . '" data-collection-id="' . $collectionId . '" data-display-mode="' . $displayMode . '" data-collection-type="' . $collectionType . '">
            <div class="collection-header">
                <div class="collection-title-row">
                    <div class="collection-title">' . htmlspecialchars($collection['name']) . '</div>
                    <div class="collection-count">' . $countText . '</div>
                </div>';
        
        if ($collection['description']) {
            $html .= '<div class="collection-description">' . nl2br(htmlspecialchars($collection['description'])) . '</div>';
        }
        
        $html .= '</div>';

        if ($itemsCount === 1) {
            $item = reset($items);
            
            if ($collectionType === 'comment') {
                $authorLink = !empty($item['url']) ? 
                    '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="author-link">' . htmlspecialchars($item['author']) . '</a>' : 
                    htmlspecialchars($item['author']);
                
                $html .= '
                <div class="collection-single-item">
                    <div class="item-info">
                        <div class="item-content-link">
                            <a href="' . htmlspecialchars($item['link']) . '" target="_blank" class="comment-link">' . htmlspecialchars($item['excerpt']) . '</a>
                        </div>
                        <div class="comment-meta">
                            <div class="comment-author">' . $authorLink . '</div>';
                
                if ($showDate && isset($item['created']) && $item['created']) {
                    $date = date('Y-m-d', $item['created']);
                    $html .= '<div class="comment-date">评论于 ' . $date . '</div>';
                }
                
                $html .= '
                        </div>
                    </div>
                </div>';
            } elseif ($collectionType === 'user') {
                $userNameLink = !empty($item['url']) ? 
                    '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="user-link">' . htmlspecialchars($item['name']) . '</a>' : 
                    htmlspecialchars($item['name']);
                
                $html .= '
                <div class="collection-single-item">
                    <div class="item-info">
                        <div class="item-name">用户：' . $userNameLink . '</div>';
                
                if ($showDate && isset($item['created']) && $item['created']) {
                    $date = date('Y-m-d', $item['created']);
                    $html .= '<div class="item-date">注册于 ' . $date . '</div>';
                }
                
                if (isset($item['recentActivity']) && $item['recentActivity']) {
                    $html .= '<div class="item-activity">最近活跃：' . $item['recentActivity'] . '</div>';
                }
                
                $html .= '
                    </div>
                </div>';
            } else {
                $html .= '
                <div class="collection-single-item">
                    <div class="item-info">
                        <div class="item-title"><a href="' . htmlspecialchars($item['link']) . '" target="_blank">' . htmlspecialchars($item['title']) . '</a></div>';
                
                if ($showExcerpt && isset($item['excerpt']) && $item['excerpt']) {
                    $html .= '<p class="item-excerpt">' . htmlspecialchars($item['excerpt']) . '</p>';
                }
                
                if ($showDate && isset($item['created']) && $item['created']) {
                    $date = date('Y-m-d', $item['created']);
                    $html .= '<div class="item-date">发布于 ' . $date . '</div>';
                }
                
                $html .= '
                    </div>
                </div>';
            }
        } else if ($itemsCount > 1) {
            $html .= '
            <div class="collection-items-container">';
            
            if ($displayMode === 'collapsible') {
                // 预览内容（最多3个）
                $previewCount = min(3, $itemsCount);
                $previewItems = array_slice($items, 0, $previewCount);
                $remainingItems = array_slice($items, $previewCount);
                
                if ($previewCount > 0) {
                    $html .= '
                    <div class="items-preview">';
                    
                    foreach ($previewItems as $item) {
                        $html .= '
                        <div class="item-preview-item">';
                        
                        if ($collectionType === 'comment') {
                            $authorLink = !empty($item['url']) ? 
                                '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="author-link">' . htmlspecialchars($item['author']) . '</a>' : 
                                htmlspecialchars($item['author']);
                            
                            $html .= '
                            <div class="item-preview-content">
                                <a href="' . htmlspecialchars($item['link']) . '" target="_blank" class="comment-link">' . htmlspecialchars(self::getExcerpt($item['content'], 60)) . '</a>
                            </div>
                            <div class="comment-preview-meta">
                                <div class="comment-preview-author">
                                    <strong>' . $authorLink . '</strong>
                                </div>';
                            
                            if ($showDate && isset($item['created']) && $item['created']) {
                                $date = date('Y-m-d', $item['created']);
                                $html .= '<div class="comment-preview-date">' . $date . '</div>';
                            }
                            
                            $html .= '
                            </div>';
                        } elseif ($collectionType === 'user') {
                            $userNameLink = !empty($item['url']) ? 
                                '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="user-link">' . htmlspecialchars($item['name']) . '</a>' : 
                                htmlspecialchars($item['name']);
                            
                            $html .= '
                            <div class="item-preview-name">
                                <strong>' . $userNameLink . '</strong>
                            </div>';
                            
                            if ($showDate && isset($item['created']) && $item['created']) {
                                $date = date('Y-m-d', $item['created']);
                                $html .= '<div class="item-preview-date">注册于 ' . $date . '</div>';
                            }
                            
                            if ($collectionType === 'user' && isset($item['recentActivity']) && $item['recentActivity']) {
                                $html .= '<div class="item-preview-activity">最近活跃：' . $item['recentActivity'] . '</div>';
                            }
                        } else {
                            $html .= '
                            <div class="item-preview-title">
                                <a href="' . htmlspecialchars($item['link']) . '" target="_blank">' . htmlspecialchars($item['title']) . '</a>
                            </div>';
                            
                            if ($showDate && isset($item['created']) && $item['created']) {
                                $date = date('Y-m-d', $item['created']);
                                $html .= '<div class="item-preview-date">发布于 ' . $date . '</div>';
                            }
                        }
                        
                        $html .= '</div>';
                    }
                    
                    $html .= '
                    </div>';
                }
                
                // 如果有剩余内容，显示展开按钮和剩余内容列表
                if (count($remainingItems) > 0) {
                    $html .= '
                    <div class="collection-toggle-container">
                        <button type="button" class="collection-toggle-btn" data-target="' . $collectionCardId . '">
                            <span class="toggle-text">展开查看更多' . ($collectionType === 'comment' ? '评论' : ($collectionType === 'user' ? '用户' : '文章')) . '（' . count($remainingItems) . '个）</span>
                            <span class="toggle-icon">▼</span>
                        </button>
                    </div>';
                    
                    $html .= '
                    <div class="collection-items-full" style="display: none;">
                        <div class="items-list">';
                    
                    // 只显示剩余的内容，不重复显示预览中的内容
                    foreach ($remainingItems as $item) {
                        $html .= '
                        <div class="item-list-item">';
                        
                        if ($collectionType === 'comment') {
                            $authorLink = !empty($item['url']) ? 
                                '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="author-link">' . htmlspecialchars($item['author']) . '</a>' : 
                                htmlspecialchars($item['author']);
                            
                            $html .= '
                            <div class="item-list-content">
                                <a href="' . htmlspecialchars($item['link']) . '" target="_blank" class="comment-link">' . htmlspecialchars(self::getExcerpt($item['content'], 100)) . '</a>
                            </div>
                            <div class="item-list-info">
                                <div class="item-list-author">
                                    <strong>' . $authorLink . '</strong>
                                </div>
                                <div class="item-list-date">' . date('Y-m-d', $item['created']) . '</div>
                            </div>';
                        } elseif ($collectionType === 'user') {
                            $userNameLink = !empty($item['url']) ? 
                                '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="user-link">' . htmlspecialchars($item['name']) . '</a>' : 
                                htmlspecialchars($item['name']);
                            
                            $html .= '
                            <div class="item-list-info">
                                <div class="item-list-name">
                                    <strong>' . $userNameLink . '</strong>
                                </div>
                                <div class="item-list-date">' . date('Y-m-d', $item['created']) . '</div>
                            </div>';
                            
                            if (isset($item['recentActivity']) && $item['recentActivity']) {
                                $html .= '<div class="item-list-activity">最近活跃：' . $item['recentActivity'] . '</div>';
                            }
                        } else {
                            $html .= '
                            <div class="item-list-info">
                                <div class="item-list-title">
                                    <a href="' . htmlspecialchars($item['link']) . '" target="_blank">' . htmlspecialchars($item['title']) . '</a>
                                </div>
                                <div class="item-list-date">' . date('Y-m-d', $item['created']) . '</div>
                            </div>';
                            
                            if ($showExcerpt && isset($item['excerpt']) && $item['excerpt']) {
                                $html .= '<div class="item-list-excerpt">' . htmlspecialchars($item['excerpt']) . '</div>';
                            }
                        }
                        
                        $html .= '</div>';
                    }
                    
                    $html .= '
                        </div>
                    </div>';
                }
            } else {
                // 始终展开模式
                $html .= '
                <div class="items-list always-expanded">';
                
                foreach ($items as $item) {
                    $html .= '
                    <div class="item-list-item">';
                    
                    if ($collectionType === 'comment') {
                        $authorLink = !empty($item['url']) ? 
                            '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="author-link">' . htmlspecialchars($item['author']) . '</a>' : 
                            htmlspecialchars($item['author']);
                        
                        $html .= '
                        <div class="item-list-content">
                            <a href="' . htmlspecialchars($item['link']) . '" target="_blank" class="comment-link">' . htmlspecialchars(self::getExcerpt($item['content'], 100)) . '</a>
                        </div>
                        <div class="item-list-info">
                            <div class="item-list-author">
                                <strong>' . $authorLink . '</strong>
                            </div>
                            <div class="item-list-date">' . date('Y-m-d', $item['created']) . '</div>
                        </div>';
                    } elseif ($collectionType === 'user') {
                        $userNameLink = !empty($item['url']) ? 
                            '<a href="' . htmlspecialchars($item['url']) . '" target="_blank" class="user-link">' . htmlspecialchars($item['name']) . '</a>' : 
                            htmlspecialchars($item['name']);
                        
                        $html .= '
                        <div class="item-list-info">
                            <div class="item-list-name">
                                <strong>' . $userNameLink . '</strong>
                            </div>
                            <div class="item-list-date">' . date('Y-m-d', $item['created']) . '</div>
                        </div>';
                        
                        if (isset($item['recentActivity']) && $item['recentActivity']) {
                            $html .= '<div class="item-list-activity">最近活跃：' . $item['recentActivity'] . '</div>';
                        }
                    } else {
                        $html .= '
                        <div class="item-list-info">
                            <div class="item-list-title">
                                <a href="' . htmlspecialchars($item['link']) . '" target="_blank">' . htmlspecialchars($item['title']) . '</a>
                            </div>
                            <div class="item-list-date">' . date('Y-m-d', $item['created']) . '</div>
                        </div>';
                        
                        if ($showExcerpt && isset($item['excerpt']) && $item['excerpt']) {
                            $html .= '<div class="item-list-excerpt">' . htmlspecialchars($item['excerpt']) . '</div>';
                        }
                    }
                    
                    $html .= '</div>';
                }
                
                $html .= '
                </div>';
            }
            
            $html .= '
            </div>';
        } else {
            $html .= '
            <div class="collection-no-items">
                <p>该合集暂无关联' . ($collectionType === 'comment' ? '评论' : ($collectionType === 'user' ? '用户' : '文章')) . '</p>
            </div>';
        }
        
        $html .= '
        </div>';

        $config = array(
            'containerId' => $collectionCardId,
            'collectionId' => $collectionId,
            'name' => $collection['name'],
            'type' => $collectionType
        );

        return array($html, self::getCollectionStyles(), $config);
    }

    /**
     * 移除header方法，改为在解析短代码时内联CSS
     */
    public static function header()
    {
        // 不再使用header方法输出CSS
    }
    
    /**
     * 输出JS到页面底部
     */
    public static function footer()
    {
        if (!empty(self::$collectionConfigs) && !self::$jsAdded) {
            echo self::getCollectionScripts(self::$collectionConfigs);
            self::$jsAdded = true;
        }
    }

    /**
     * 获取合集CSS样式
     */
    private static function getCollectionStyles()
    {
        return '
        .collection-card {
            border: 1px solid #e8e8e8;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            background: white;
            margin: 20px 0;
            padding: 20px;
        }
        
        .collection-header {
            margin-bottom: 20px;
            border-bottom: 1px solid #e8e8e8;
            padding-bottom: 15px;
        }
        
        .collection-title-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }
        
        .collection-title {
            margin: 0;
            font-size: 20px;
            font-weight: 600;
            color: #333;
            flex: 1;
        }
        
        .collection-count {
            color: #666;
            font-size: 14px;
            padding: 4px 10px;
            background: #f5f5f5;
            border-radius: 4px;
            white-space: nowrap;
            margin-left: 15px;
        }
        
        .collection-description {
            color: #666;
            font-size: 14px;
            line-height: 1.6;
        }
        
        .collection-single-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        
        .item-info {
            flex: 1;
            min-width: 0;
        }
        
        .item-title {
            margin: 0 0 10px 0;
            font-size: 18px;
            font-weight: 500;
            color: #333;
        }
        
        .item-title a {
            color: #333;
            text-decoration: none;
        }
        
        .item-title a:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-name {
            margin: 0 0 10px 0;
            font-size: 18px;
            font-weight: 500;
            color: #333;
        }
        
        .item-name a.user-link {
            color: #333;
            text-decoration: none;
        }
        
        .item-name a.user-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .comment-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 8px;
            color: #999;
            font-size: 13px;
        }
        
        .comment-author, .comment-date {
            color: #999;
            font-size: 13px;
        }
        
        .comment-author a.author-link {
            color: #999;
            text-decoration: none;
        }
        
        .comment-author a.author-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-excerpt {
            margin: 10px 0;
            color: #666;
            font-size: 14px;
            line-height: 1.6;
        }
        
        .item-date, .item-activity {
            color: #999;
            font-size: 13px;
            margin-top: 5px;
        }
        
        .item-content-link a.comment-link {
            color: #666;
            text-decoration: none;
            display: block;
            padding: 8px 0;
            border-left: none;
            padding-left: 0;
        }
        
        .item-content-link a.comment-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .collection-items-container {
            margin-top: 15px;
        }
        
        .items-preview {
            margin-bottom: 15px;
        }
        
        .item-preview-item {
            padding: 10px 0;
            border-bottom: 1px dashed #e8e8e8;
        }
        
        .item-preview-item:last-child {
            border-bottom: none;
        }
        
        .item-preview-title a {
            color: #333;
            text-decoration: none;
            font-size: 15px;
        }
        
        .item-preview-title a:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-preview-name, .item-preview-author {
            font-weight: 500;
            margin-bottom: 5px;
            color: #333;
        }
        
        .item-preview-name a.user-link,
        .item-preview-author a.author-link {
            color: #333;
            text-decoration: none;
        }
        
        .item-preview-name a.user-link:hover,
        .item-preview-author a.author-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-preview-content {
            color: #666;
            font-size: 13px;
            line-height: 1.5;
            margin-bottom: 5px;
        }
        
        .item-preview-content a.comment-link {
            color: #666;
            text-decoration: none;
        }
        
        .item-preview-content a.comment-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .comment-preview-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 5px;
            color: #999;
            font-size: 12px;
        }
        
        .comment-preview-author, .comment-preview-date {
            color: #999;
            font-size: 12px;
        }
        
        .comment-preview-author a.author-link {
            color: #999;
            text-decoration: none;
        }
        
        .comment-preview-author a.author-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-preview-date, .item-preview-activity {
            color: #999;
            font-size: 12px;
            margin-top: 3px;
        }
        
        .collection-toggle-container {
            text-align: center;
            margin: 15px 0;
            padding-top: 15px;
            border-top: 1px solid #e8e8e8;
        }
        
        .collection-toggle-btn {
            background: none;
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 8px 20px;
            color: #666;
            cursor: pointer;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s;
        }
        
        .collection-toggle-btn:hover {
            background: #f5f5f5;
            border-color: #ccc;
        }
        
        .collection-toggle-btn.expanded .toggle-icon {
            transform: rotate(180deg);
        }
        
        .toggle-icon {
            transition: transform 0.3s;
            font-size: 12px;
        }
        
        .collection-items-full {
            margin-top: 20px;
        }
        
        .items-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        
        .item-list-item {
            padding: 15px;
            border: 1px solid #e8e8e8;
            border-radius: 6px;
            background: #f9f9f9;
        }
        
        .item-list-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
        }
        
        .item-list-title a {
            color: #333;
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
        }
        
        .item-list-title a:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-list-name, .item-list-author {
            color: #333;
            font-size: 16px;
            font-weight: 500;
        }
        
        .item-list-name a.user-link,
        .item-list-author a.author-link {
            color: #333;
            text-decoration: none;
        }
        
        .item-list-name a.user-link:hover,
        .item-list-author a.author-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-list-date {
            color: #999;
            font-size: 13px;
            flex-shrink: 0;
            margin-left: 15px;
        }
        
        .item-list-excerpt {
            color: #666;
            font-size: 14px;
            line-height: 1.5;
            margin-top: 8px;
        }
        
        .item-list-content {
            color: #666;
            font-size: 14px;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        
        .item-list-content a.comment-link {
            color: #666;
            text-decoration: none;
            display: block;
            padding: 8px 0;
            border-left: none;
            padding-left: 0;
        }
        
        .item-list-content a.comment-link:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .item-list-activity {
            margin-top: 5px;
            color: #666;
            font-size: 13px;
        }
        
        .collection-no-items {
            text-align: center;
            padding: 30px;
            color: #999;
            font-size: 16px;
            background: #f9f9f9;
            border-radius: 6px;
        }
        
        .collection-error {
            padding: 20px;
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
            border-radius: 4px;
            text-align: center;
        }
        
        /* 网格布局 */
        .collection-card[data-display-mode="grid"] .items-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 15px;
        }
        
        .collection-card[data-display-mode="grid"] .item-list-item {
            margin: 0;
        }
        
        /* 深色模式适配 */
        .dark .collection-card {
            background: #1a1a1a;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        
        .dark .collection-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .dark .collection-title {
            color: #fff;
        }
        
        .dark .collection-count {
            background: #2a2a2a;
            color: #ccc;
        }
        
        .dark .collection-description {
            color: #ccc;
        }
        
        .dark .item-title a,
        .dark .item-preview-title a,
        .dark .item-list-title a {
            color: #999;
            text-decoration: none;
        }
        
        .dark .item-title a:hover,
        .dark .item-preview-title a:hover,
        .dark .item-list-title a:hover {
            color: #3b82f6;
            text-decoration: underline;
        }
        
        .dark .item-name,
        .dark .item-author,
        .dark .item-list-name,
        .dark .item-list-author,
        .dark .item-preview-name,
        .dark .item-preview-author {
            color: #ddd;
        }
        
        .dark .item-name a.user-link,
        .dark .item-author a.author-link,
        .dark .item-list-name a.user-link,
        .dark .item-list-author a.author-link,
        .dark .item-preview-name a.user-link,
        .dark .item-preview-author a.author-link {
            color: #ddd;
        }
        
        .dark .item-name a.user-link:hover,
        .dark .item-author a.author-link:hover,
        .dark .item-list-name a.user-link:hover,
        .dark .item-list-author a.author-link:hover,
        .dark .item-preview-name a.user-link:hover,
        .dark .item-preview-author a.author-link:hover {
            color: #3b82f6;
        }
        
        .dark .comment-meta,
        .dark .comment-author,
        .dark .comment-date,
        .dark .comment-preview-meta,
        .dark .comment-preview-author,
        .dark .comment-preview-date {
            color: #999;
        }
        
        .dark .comment-author a.author-link,
        .dark .comment-preview-author a.author-link {
            color: #999;
        }
        
        .dark .comment-author a.author-link:hover,
        .dark .comment-preview-author a.author-link:hover {
            color: #3b82f6;
        }
        
        .dark .item-excerpt,
        .dark .item-list-excerpt,
        .dark .item-list-content,
        .dark .item-preview-content {
            color: #ccc;
        }
        
        .dark .item-content-link a.comment-link,
        .dark .item-list-content a.comment-link,
        .dark .item-preview-content a.comment-link {
            color: #ccc;
            border-left: none;
        }
        
        .dark .item-content-link a.comment-link:hover,
        .dark .item-list-content a.comment-link:hover,
        .dark .item-preview-content a.comment-link:hover {
            color: #3b82f6;
        }
        
        .dark .collection-toggle-container,
        .dark .item-preview-item {
            border-top-color: rgba(255, 255, 255, 0.1);
            border-bottom-color: rgba(255, 255, 255, 0.1);
        }
        
        .dark .item-list-item {
            background: #2a2a2a;
            border-color: rgba(255, 255, 255, 0.1);
        }
        
        .dark .item-list-date,
        .dark .item-preview-date,
        .dark .item-date,
        .dark .item-activity {
            color: #999;
        }
        
        .dark .collection-toggle-btn {
            border-color: rgba(255, 255, 255, 0.2);
            color: #ccc;
        }
        
        .dark .collection-toggle-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.3);
        }
        
        .dark .collection-no-items {
            background: #2a2a2a;
            color: #ccc;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .collection-single-item {
                flex-direction: column;
            }
            
            .collection-title-row {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .collection-count {
                margin-left: 0;
                margin-top: 5px;
            }
            
            .collection-card[data-display-mode="grid"] .items-list {
                grid-template-columns: 1fr;
            }
            
            .item-list-info {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .item-list-date {
                margin-left: 0;
                margin-top: 5px;
            }
            
            .comment-meta,
            .comment-preview-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 3px;
            }
        }
        
        @media (max-width: 480px) {
            .collection-card {
                padding: 15px;
            }
        }
        ';
    }

    /**
     * 获取合集JS脚本
     */
    private static function getCollectionScripts($collectionConfigs)
    {
        $configsJson = json_encode($collectionConfigs);
        
        return '
        <script>
        (function() {
            function initCollection() {
                // 处理可折叠合集的展开/收起功能
                document.querySelectorAll(".collection-toggle-btn").forEach(function(button) {
                    button.addEventListener("click", function() {
                        var targetId = this.getAttribute("data-target");
                        var targetCard = document.getElementById(targetId);
                        var fullContent = targetCard.querySelector(".collection-items-full");
                        var toggleText = this.querySelector(".toggle-text");
                        var toggleIcon = this.querySelector(".toggle-icon");
                        
                        if (fullContent.style.display === "none") {
                            fullContent.style.display = "block";
                            toggleText.textContent = "收起剩余内容";
                            this.classList.add("expanded");
                            toggleIcon.style.transform = "rotate(180deg)";
                        } else {
                            fullContent.style.display = "none";
                            // 更新按钮文本显示剩余内容数量
                            var remainingCount = fullContent.querySelectorAll(".item-list-item").length;
                            var collectionType = targetCard.getAttribute("data-collection-type");
                            var typeText = collectionType === "comment" ? "评论" : 
                                          collectionType === "user" ? "用户" : "文章";
                            toggleText.textContent = "展开查看更多" + typeText + "（" + remainingCount + "个）";
                            button.classList.remove("expanded");
                            toggleIcon.style.transform = "";
                        }
                    });
                });
                
                // 网格布局的特殊处理
                document.querySelectorAll(".collection-card[data-display-mode=\'grid\']").forEach(function(card) {
                    var items = card.querySelectorAll(".item-list-item");
                    if (items.length > 0) {
                        items.forEach(function(item) {
                            item.addEventListener("mouseenter", function() {
                                this.style.transform = "translateY(-2px)";
                                this.style.boxShadow = "0 4px 12px rgba(0,0,0,0.15)";
                            });
                            
                            item.addEventListener("mouseleave", function() {
                                this.style.transform = "";
                                this.style.boxShadow = "";
                            });
                        });
                    }
                });
            }
            
            if (document.readyState === "loading") {
                document.addEventListener("DOMContentLoaded", initCollection);
            } else {
                setTimeout(initCollection, 100);
            }
        })();
        </script>';
    }

    /**
     * 同步关联内容
     */
    private static function syncRelatedItems($collectionId, $itemId, $itemType = 'article')
    {
        try {
            $db = self::getDbConnection();
            
            $stmt = $db->prepare("SELECT related_items, collection_type FROM plugin_collection WHERE id = ?");
            $stmt->execute(array($collectionId));
            $result = $stmt->fetch(PDO::FETCH_ASSOC);
            
            if ($result) {
                // 检查合集类型是否匹配
                if ($result['collection_type'] != $itemType) {
                    return false;
                }
                
                $currentRelatedItems = $result['related_items'];
                $relatedItemsArray = array();
                
                if (!empty($currentRelatedItems)) {
                    $relatedItemsArray = explode(',', $currentRelatedItems);
                    $relatedItemsArray = array_map('trim', $relatedItemsArray);
                    $relatedItemsArray = array_filter($relatedItemsArray);
                }
                
                if (!in_array($itemId, $relatedItemsArray)) {
                    $relatedItemsArray[] = $itemId;
                    $newRelatedItems = implode(',', $relatedItemsArray);
                    
                    $updateStmt = $db->prepare("UPDATE plugin_collection SET related_items = ? WHERE id = ?");
                    $updateStmt->execute(array($newRelatedItems, $collectionId));
                    
                    return true;
                }
            }
        } catch (Exception $e) {
            error_log('Collection: 同步关联内容失败: ' . $e->getMessage());
        }
        
        return false;
    }

    /**
     * 文章保存时的处理
     */
    public static function onPostSave($content)
    {
        $cid = isset($content['cid']) ? $content['cid'] : 0;
        
        if ($cid && isset($content['text'])) {
            $pattern = '/\{collection-(\d+)\}/i';
            if (preg_match_all($pattern, $content['text'], $matches)) {
                foreach ($matches[1] as $collectionId) {
                    $collection = self::getCollectionById($collectionId);
                    if ($collection) {
                        self::syncRelatedItems($collectionId, $cid, 'article');
                    }
                }
            }
        }
        
        return $content;
    }

    /**
     * 文章写入时的处理
     */
    public static function onPostWrite($content)
    {
        return self::onPostSave($content);
    }

    /**
     * 获取关联文章信息
     */
    public static function getRelatedArticlesInfo($relatedArticles)
    {
        $result = array();
        
        if (empty($relatedArticles)) {
            return $result;
        }
        
        $articleIds = explode(',', $relatedArticles);
        $articleIds = array_map('trim', $articleIds);
        $articleIds = array_filter($articleIds);
        
        foreach ($articleIds as $cid) {
            if (is_numeric($cid)) {
                $articleInfo = self::getArticleInfo($cid);
                if ($articleInfo['title']) {
                    $result[$cid] = array(
                        'title' => $articleInfo['title'],
                        'link' => $articleInfo['link'],
                        'cid' => $cid
                    );
                }
            }
        }
        
        return $result;
    }
    
    /**
     * 获取关联评论信息
     */
    public static function getRelatedCommentsInfo($relatedComments)
    {
        $result = array();
        
        if (empty($relatedComments)) {
            return $result;
        }
        
        $commentIds = explode(',', $relatedComments);
        $commentIds = array_map('trim', $commentIds);
        $commentIds = array_filter($commentIds);
        
        foreach ($commentIds as $coid) {
            if (is_numeric($coid)) {
                $commentInfo = self::getCommentInfo($coid);
                if ($commentInfo['author']) {
                    $result[$coid] = array(
                        'author' => $commentInfo['author'],
                        'content' => $commentInfo['text'],
                        'coid' => $coid,
                        'link' => $commentInfo['link'],
                        'url' => $commentInfo['url']
                    );
                }
            }
        }
        
        return $result;
    }
    
    /**
     * 获取关联用户信息
     */
    public static function getRelatedUsersInfo($relatedUsers)
    {
        $result = array();
        
        if (empty($relatedUsers)) {
            return $result;
        }
        
        $userIds = explode(',', $relatedUsers);
        $userIds = array_map('trim', $userIds);
        $userIds = array_filter($userIds);
        
        foreach ($userIds as $uid) {
            if (is_numeric($uid)) {
                $userInfo = self::getUserInfo($uid);
                if ($userInfo['name']) {
                    $result[$uid] = array(
                        'name' => $userInfo['name'],
                        'url' => $userInfo['url'],
                        'uid' => $uid,
                        'commentCount' => $userInfo['commentCount'],
                        'recentActivity' => $userInfo['recentActivity']
                    );
                }
            }
        }
        
        return $result;
    }
}
?>