<?php
/**
 * 知识备忘插件
 * 
 * @package Memo
 * @author 石头厝
 * @version 1.1.0
 * @link https://www.shitoucuo.com/
 */
class Memo_Plugin implements Typecho_Plugin_Interface
{
    /**
     * 激活插件
     */
    public static function activate()
    {
        // 创建新的数据表，不与旧插件冲突
        $db = Typecho_Db::get();
        $prefix = $db->getPrefix();
        $tableName = $prefix . 'memo';
        
        // 检查表是否存在
        $tables = $db->fetchAll($db->query("SHOW TABLES LIKE '{$tableName}'"));
        
        if (empty($tables)) {
            // 创建新表
            $sql = "CREATE TABLE `{$tableName}` (
                `id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
                `content` TEXT NOT NULL COMMENT '内容',
                `category` VARCHAR(100) DEFAULT '默认' COMMENT '分类',
                `event_date` DATE NULL COMMENT '事件日期（可选）',
                `post_cids` VARCHAR(255) DEFAULT '' COMMENT '关联文章CID，多个用逗号分隔',
                `original_url` VARCHAR(500) DEFAULT '' COMMENT '原文链接',
                `created` DATETIME NOT NULL COMMENT '创建时间',
                `modified` DATETIME NOT NULL COMMENT '修改时间',
                `status` TINYINT(1) DEFAULT 1 COMMENT '状态：1正常'
            ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='备忘录记录表';";
            
            try {
                $db->query($sql);
            } catch (Typecho_Db_Exception $e) {
                throw new Typecho_Plugin_Exception('创建数据表失败: ' . $e->getMessage());
            }
        } else {
            // 检查表结构，如果缺少original_url字段则添加
            $columns = $db->fetchAll($db->query("SHOW COLUMNS FROM `{$tableName}`"));
            $hasOriginalUrl = false;
            
            foreach ($columns as $column) {
                if ($column['Field'] == 'original_url') {
                    $hasOriginalUrl = true;
                    break;
                }
            }
            
            if (!$hasOriginalUrl) {
                // 添加original_url字段
                try {
                    $db->query("ALTER TABLE `{$tableName}` ADD COLUMN `original_url` VARCHAR(500) DEFAULT '' COMMENT '原文链接' AFTER `post_cids`");
                } catch (Typecho_Db_Exception $e) {
                    error_log("添加original_url字段失败: " . $e->getMessage());
                }
            }
        }
        
        // 添加管理菜单
        Helper::addPanel(3, 'Memo/manage-panel.php', '知识备忘', '备忘管理', 'administrator');
        
        return _t('备忘录插件已激活，请到插件设置中进行配置');
    }

    /**
     * 禁用插件
     */
    public static function deactivate()
    {
        Helper::removePanel(3, 'Memo/manage-panel.php');
        return _t('备忘录插件已禁用');
    }

    /**
     * 插件配置面板
     */
    public static function config(Typecho_Widget_Helper_Form $form)
    {
        
        
        // 每页显示数量
        $perPage = new Typecho_Widget_Helper_Form_Element_Text(
            'perPage',
            NULL,
            '30',
            _t('后台每页显示数量'),
            _t('后台管理页面每页显示的备忘录数量')
        );
        $perPage->input->setAttribute('class', 'mini');
        $form->addInput($perPage->addRule('isInteger', _t('请输入整数')));
        
        // 前端每页显示数量
        $frontPerPage = new Typecho_Widget_Helper_Form_Element_Text(
            'frontPerPage',
            NULL,
            '20',
            _t('主题调用每页显示数量'),
            _t('在主题中调用时每页显示的备忘录数量')
        );
        $frontPerPage->input->setAttribute('class', 'mini');
        $form->addInput($frontPerPage->addRule('isInteger', _t('请输入整数')));
        
        // 默认分类设置
        $defaultCategories = new Typecho_Widget_Helper_Form_Element_Textarea(
            'defaultCategories',
            NULL,
            "技术/经验\n公司/副业\n户外/亲子\n主题/插件\n兴趣/爱好\n工作/效率\n创作/媒体\n个人/成长\n程序/应用",
            _t('默认分类'),
            _t('每行一个分类，回车分隔。这些分类将在发布和编辑时显示在下拉框中。')
        );
        $form->addInput($defaultCategories);
        
        // 是否显示事件时间
        $showEventDate = new Typecho_Widget_Helper_Form_Element_Radio(
            'showEventDate',
            array(
                '1' => _t('显示'),
                '0' => _t('不显示')
            ),
            '1',
            _t('显示事件时间'),
            _t('是否在备忘录中显示事件时间（如果设置了的话）')
        );
        $form->addInput($showEventDate);
        
        // 是否显示关联文章
        $showRelatedPosts = new Typecho_Widget_Helper_Form_Element_Radio(
            'showRelatedPosts',
            array(
                '1' => _t('显示'),
                '0' => _t('不显示')
            ),
            '1',
            _t('显示关联文章'),
            _t('是否在备忘录下方显示关联的文章链接')
        );
        $form->addInput($showRelatedPosts);
        
        // 关联文章标题
        $relatedPostsTitle = new Typecho_Widget_Helper_Form_Element_Text(
            'relatedPostsTitle',
            NULL,
            '相关文章',
            _t('关联文章标题'),
            _t('关联文章部分的标题文本')
        );
        $form->addInput($relatedPostsTitle);
    }

    /**
     * 个人用户配置
     */
    public static function personalConfig(Typecho_Widget_Helper_Form $form)
    {
        // 个人配置（如果需要）
    }

    /**
     * 插件配置面板
     */
    public static function configPanel($panel)
    {
        // 配置面板
    }

    /**
     * 渲染方法（用于在主题模板中调用）
     */
    public static function render()
    {
        // 获取配置
        $options = Typecho_Widget::widget('Widget_Options');
        $config = $options->plugin('Memo');
        
        // 引入Action类
        require_once dirname(__FILE__) . '/Action.php';
        $action = new Memo_Action();
        
        // 参数处理
        $currentFile = basename($_SERVER['PHP_SELF']);
        $selectedCategory = isset($_GET['cat']) ? trim($_GET['cat']) : '';
        $searchKeyword = isset($_GET['search']) ? trim(urldecode($_GET['search'])) : '';
        $currentPage = isset($_GET['page']) && $_GET['page'] > 0 ? intval($_GET['page']) : 1;
        $perPage = isset($config->frontPerPage) ? intval($config->frontPerPage) : 20;
        
        // 获取分类列表
        $categories = $action->getAllCategories();
        $categoryCounts = $action->getCategoryCounts();
        
        // 获取备忘录数据
        $memos = $action->getMemos($currentPage, $perPage, $searchKeyword, $selectedCategory);
        $total = $action->getTotalCount($searchKeyword, $selectedCategory);
        $totalPages = ceil($total / $perPage);
        
        // 如果没有数据
        if (empty($memos) && empty($searchKeyword) && empty($selectedCategory)) {
            echo '<div class="memo-empty">暂无备忘录记录</div>';
            return;
        }
        
        // 为每条记录获取关联的文章信息
        foreach ($memos as &$memo) {
            if (!empty($memo['post_cids'])) {
                $cids = array_filter(array_map('trim', explode(',', $memo['post_cids'])));
                $posts = array();
                foreach ($cids as $cid) {
                    if (is_numeric($cid)) {
                        $post = $action->getPostByCid($cid);
                        if ($post) {
                            $posts[] = $post;
                        }
                    }
                }
                $memo['posts'] = $posts;
            } else {
                $memo['posts'] = array();
            }
        }
        ?>
        <!-- 样式部分 -->
        <style>
        .memo-container {
            background: #fff;
            border-radius: 8px;
            padding: 20px;
        }
        
        .memo-title {
            text-align: center;
            margin-bottom: 20px;
            color: #333;
            font-size: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #007bff;
        }
        
        /* 搜索框 */
        .memo-search {
            margin-bottom: 20px;
            text-align: center;
        }
        
        .memo-search input {
            padding: 10px 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            width: 300px;
            max-width: 100%;
            font-size: 14px;
        }
        
        .memo-search button {
            padding: 10px 20px;
            background: #007bff;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            margin-left: 5px;
        }
        
        /* 分类筛选 */
        .memo-categories {
            margin-bottom: 20px;
            text-align: center;
        }
        
        .memo-category-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            list-style: none;
            padding: 0;
        }
        
        .memo-category-item {
            display: inline-block;
        }
        
        .memo-category-link {
            display: inline-block;
            padding: 6px 12px;
            background: #f8f9fa;
            color: #495057;
            text-decoration: none;
            border-radius: 20px;
            border: 1px solid #dee2e6;
            font-size: 13px;
            transition: all 0.2s;
        }
        
        .memo-category-link:hover {
            background: #e9ecef;
        }
        
        .memo-category-link.active {
            background: #28a745;
            color: white;
            border-color: #28a745;
        }
        
        .memo-category-count {
            font-size: 11px;
            opacity: 0.8;
            margin-left: 4px;
        }
        
        /* 备忘录列表 */
        .memo-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .memo-item {
            padding: 15px;
            border-bottom: 1px solid #eee;
            transition: background 0.2s;
        }
        
        .memo-item:hover {
            background: #f8f9fa;
        }
        
        .memo-item-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
        }
        
        .memo-category {
            display: inline-block;
            background: #e8f5e8;
            color: #2e7d32;
            padding: 3px 8px;
            border-radius: 3px;
            font-size: 12px;
            font-weight: 500;
        }
        
        .memo-date {
            color: #666;
            font-size: 12px;
        }
        
        .memo-content {
            color: #333;
            line-height: 1.6;
            font-size: 14px;
            word-wrap: break-word;
        }
        
        /* URL链接样式 - 修复2：只对URL本身加链接 */
        .memo-url-link {
            color: #0066cc;
            text-decoration: none;
            border-bottom: 1px dotted #0066cc;
            word-break: break-all;
        }
        
        .memo-url-link:hover {
            color: #0056b3;
            border-bottom: 1px solid #0056b3;
        }
        
        /* 原文链接 */
        .memo-original-link {
            margin-top: 10px;
            padding: 8px 12px;
            background: #f8f9fa;
            border-radius: 4px;
            border-left: 3px solid #28a745;
        }
        
        .memo-original-title {
            font-size: 12px;
            font-weight: 600;
            color: #495057;
            margin-bottom: 5px;
        }
        
        .memo-original-url {
            color: #0066cc;
            text-decoration: none;
            font-size: 13px;
            word-break: break-all;
        }
        
        .memo-original-url:hover {
            text-decoration: underline;
        }
        
        /* 关联文章 */
        .memo-related-posts {
            margin-top: 10px;
            padding: 8px 12px;
            background: #f8f9fa;
            border-radius: 4px;
            border-left: 3px solid #007bff;
        }
        
        .memo-related-title {
            font-size: 12px;
            font-weight: 600;
            color: #495057;
            margin-bottom: 5px;
        }
        
        .memo-related-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .memo-related-item {
            margin-bottom: 4px;
        }
        
        .memo-related-link {
            color: #0066cc;
            text-decoration: none;
            font-size: 13px;
        }
        
        /* 分页 */
        .memo-pagination {
            margin-top: 30px;
            text-align: center;
        }
        
        .memo-pagination a,
        .memo-pagination span {
            display: inline-block;
            padding: 6px 12px;
            margin: 0 2px;
            background: #f8f9fa;
            color: #495057;
            text-decoration: none;
            border-radius: 4px;
            border: 1px solid #dee2e6;
            font-size: 13px;
        }
        
        .memo-pagination a:hover {
            background: #e9ecef;
        }
        
        .memo-pagination .current {
            background: #007bff;
            color: white;
            border-color: #007bff;
        }
        
        /* 空状态 */
        .memo-empty {
            text-align: center;
            padding: 40px 20px;
            color: #999;
            font-size: 14px;
        }
        
        /* 筛选信息 */
        .memo-filter-info {
            text-align: center;
            margin: 10px 0 20px;
            padding: 8px 12px;
            background: #e7f3ff;
            border-radius: 4px;
            color: #0066cc;
            font-size: 13px;
        }
        
        .memo-filter-info a {
            color: #666;
            margin-left: 10px;
            text-decoration: none;
            font-size: 12px;
        }
        
        @media (max-width: 768px) {
            .memo-container {
                padding: 15px;
            }
            
            .memo-search input {
                width: 100%;
                margin-bottom: 10px;
            }
            
            .memo-search button {
                width: 100%;
                margin-left: 0;
            }
            
            .memo-item-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 5px;
            }
        }
        </style>
        
        <div class="memo-container">
            <h2 class="memo-title">备忘录</h2>
            
            <!-- 搜索框 -->
            <div class="memo-search">
                <form method="get" action="<?php echo $currentFile; ?>">
                    <input type="text" name="search" placeholder="搜索备忘录内容..." value="<?php echo htmlspecialchars($searchKeyword); ?>">
                    <?php if ($selectedCategory): ?>
                    <input type="hidden" name="cat" value="<?php echo htmlspecialchars($selectedCategory); ?>">
                    <?php endif; ?>
                    <button type="submit">搜索</button>
                    <?php if ($searchKeyword || $selectedCategory): ?>
                    <a href="<?php echo $currentFile; ?>" style="margin-left: 10px; font-size: 13px; color: #666;">清除筛选</a>
                    <?php endif; ?>
                </form>
            </div>
            
            <!-- 分类筛选 -->
            <?php if (!empty($categories)): ?>
            <div class="memo-categories">
                <ul class="memo-category-list">
                    <li class="memo-category-item">
                        <a href="<?php echo $currentFile; ?>" 
                           class="memo-category-link <?php echo empty($selectedCategory) ? 'active' : ''; ?>">
                            全部
                        </a>
                    </li>
                    <?php foreach ($categories as $category): ?>
                    <li class="memo-category-item">
                        <a href="<?php echo $currentFile . '?cat=' . urlencode($category); ?>" 
                           class="memo-category-link <?php echo $selectedCategory == $category ? 'active' : ''; ?>">
                            <?php echo htmlspecialchars($category); ?>
                            <?php if (isset($categoryCounts[$category])): ?>
                            <span class="memo-category-count">(<?php echo $categoryCounts[$category]; ?>)</span>
                            <?php endif; ?>
                        </a>
                    </li>
                    <?php endforeach; ?>
                </ul>
            </div>
            <?php endif; ?>
            
            <!-- 筛选信息 -->
            <?php if ($searchKeyword || $selectedCategory): ?>
            <div class="memo-filter-info">
                <?php if ($searchKeyword && $selectedCategory): ?>
                搜索"<strong><?php echo htmlspecialchars($searchKeyword); ?></strong>"，分类"<strong><?php echo htmlspecialchars($selectedCategory); ?></strong>"，共找到 <?php echo $total; ?> 条记录
                <?php elseif ($searchKeyword): ?>
                搜索"<strong><?php echo htmlspecialchars($searchKeyword); ?></strong>"，共找到 <?php echo $total; ?> 条记录
                <?php elseif ($selectedCategory): ?>
                分类"<strong><?php echo htmlspecialchars($selectedCategory); ?></strong>"，共 <?php echo $total; ?> 条记录
                <?php endif; ?>
            </div>
            <?php endif; ?>
            
            <!-- 备忘录列表 -->
            <?php if (!empty($memos)): ?>
            <div class="memo-list">
                <?php foreach ($memos as $memo): ?>
                <div class="memo-item">
                    <div class="memo-item-header">
                        <?php if (!empty($memo['category'])): ?>
                        <span class="memo-category"><?php echo htmlspecialchars($memo['category']); ?></span>
                        <?php endif; ?>
                        
                        <?php if (!empty($memo['event_date']) && isset($config->showEventDate) && $config->showEventDate == 1): ?>
                        <span class="memo-date"><?php echo date('Y.m.d', strtotime($memo['event_date'])); ?></span>
                        <?php endif; ?>
                    </div>
                    
                    <div class="memo-content">
                        <?php 
                        $content = $memo['content'];
                        // 修复2：精确匹配URL，只对URL本身加链接
                        $content = htmlspecialchars($content);
                        
                        // 精确的URL正则匹配
                        $content = preg_replace_callback(
                            '/(https?:\/\/[a-zA-Z0-9][-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)/',
                            function($matches) {
                                $url = $matches[1];
                                // 清理URL末尾可能错误的标点符号
                                $punctuation = array('.', ',', ';', ':', '!', '?', ')', ']', '}');
                                $lastChar = substr($url, -1);
                                if (in_array($lastChar, $punctuation)) {
                                    $url = substr($url, 0, -1);
                                    $suffix = $lastChar;
                                } else {
                                    $suffix = '';
                                }
                                
                                return '<a href="' . htmlspecialchars($url) . '" class="memo-url-link" target="_blank" rel="noopener noreferrer">' . htmlspecialchars($url) . '</a>' . $suffix;
                            },
                            $content
                        );
                        
                        if (!empty($searchKeyword)) {
                            $searchEncoded = htmlspecialchars($searchKeyword);
                            $content = preg_replace(
                                '/(' . preg_quote($searchEncoded, '/') . ')/i',
                                '<mark style="background: yellow;">$1</mark>',
                                $content
                            );
                        }
                        echo nl2br($content);
                        ?>
                    </div>
                    
                    <?php if (!empty($memo['original_url'])): ?>
                    <div class="memo-original-link">
                        <div class="memo-original-title">原文链接：</div>
                        <a href="<?php echo htmlspecialchars($memo['original_url']); ?>" 
                           class="memo-original-url" 
                           target="_blank" 
                           rel="noopener noreferrer">
                            <?php echo htmlspecialchars($memo['original_url']); ?>
                        </a>
                    </div>
                    <?php endif; ?>
                    
                    <?php if (isset($config->showRelatedPosts) && $config->showRelatedPosts == 1 && !empty($memo['posts'])): ?>
                    <div class="memo-related-posts">
                        <div class="memo-related-title"><?php echo isset($config->relatedPostsTitle) ? $config->relatedPostsTitle : '相关文章'; ?></div>
                        <ul class="memo-related-list">
                            <?php foreach ($memo['posts'] as $post): ?>
                            <li class="memo-related-item">
                                <a href="<?php echo $post['url']; ?>" class="memo-related-link" target="_blank">
                                    <?php echo htmlspecialchars($post['title']); ?>
                                </a>
                            </li>
                            <?php endforeach; ?>
                        </ul>
                    </div>
                    <?php endif; ?>
                </div>
                <?php endforeach; ?>
            </div>
            
            <!-- 分页 -->
            <?php if ($totalPages > 1): ?>
            <div class="memo-pagination">
                <?php 
                $start = max(1, $currentPage - 2);
                $end = min($totalPages, $currentPage + 2);
                
                if ($currentPage > 1): ?>
                <a href="<?php echo $currentFile; ?>?page=<?php echo $currentPage-1; ?><?php echo $selectedCategory ? '&cat=' . urlencode($selectedCategory) : ''; ?><?php echo $searchKeyword ? '&search=' . urlencode($searchKeyword) : ''; ?>">上一页</a>
                <?php endif; ?>
                
                <?php if ($start > 1): ?>
                <a href="<?php echo $currentFile; ?>?page=1<?php echo $selectedCategory ? '&cat=' . urlencode($selectedCategory) : ''; ?><?php echo $searchKeyword ? '&search=' . urlencode($searchKeyword) : ''; ?>">1</a>
                <?php if ($start > 2): ?>...<?php endif; ?>
                <?php endif; ?>
                
                <?php for ($i = $start; $i <= $end; $i++): ?>
                <?php if ($i == $currentPage): ?>
                <span class="current"><?php echo $i; ?></span>
                <?php else: ?>
                <a href="<?php echo $currentFile; ?>?page=<?php echo $i; ?><?php echo $selectedCategory ? '&cat=' . urlencode($selectedCategory) : ''; ?><?php echo $searchKeyword ? '&search=' . urlencode($searchKeyword) : ''; ?>"><?php echo $i; ?></a>
                <?php endif; ?>
                <?php endfor; ?>
                
                <?php if ($end < $totalPages): ?>
                <?php if ($end < $totalPages - 1): ?>...<?php endif; ?>
                <a href="<?php echo $currentFile; ?>?page=<?php echo $totalPages; ?><?php echo $selectedCategory ? '&cat=' . urlencode($selectedCategory) : ''; ?><?php echo $searchKeyword ? '&search=' . urlencode($searchKeyword) : ''; ?>"><?php echo $totalPages; ?></a>
                <?php endif; ?>
                
                <?php if ($currentPage < $totalPages): ?>
                <a href="<?php echo $currentFile; ?>?page=<?php echo $currentPage+1; ?><?php echo $selectedCategory ? '&cat=' . urlencode($selectedCategory) : ''; ?><?php echo $searchKeyword ? '&search=' . urlencode($searchKeyword) : ''; ?>">下一页</a>
                <?php endif; ?>
            </div>
            <?php endif; ?>
            
            <?php else: ?>
            <div class="memo-empty">
                <?php if ($searchKeyword || $selectedCategory): ?>
                没有找到符合条件的备忘录
                <?php else: ?>
                暂无备忘录记录
                <?php endif; ?>
            </div>
            <?php endif; ?>
        </div>
        <?php
    }
}