<?php
/**
 * 面包屑导航（没有适配版）
 * 
 * @package SimpleBreadcrumb
 * @author 石头厝
 * @version 3.0.0
 * @link https://www.shitoucuo.com/
 */

class SimpleBreadcrumb_Plugin implements Typecho_Plugin_Interface
{
    /**
     * 激活插件
     */
    public static function activate()
    {
        Typecho_Plugin::factory('Widget_Archive')->footer = array('SimpleBreadcrumb_Plugin', 'footer');
        return _t('面包屑导航插件已激活，请在文章页面使用 SimpleBreadcrumb_Plugin::show() 调用');
    }

    /**
     * 禁用插件
     */
    public static function deactivate()
    {
        return _t('面包屑导航插件已禁用');
    }

    /**
     * 插件配置面板（简化版）
     */
    public static function config(Typecho_Widget_Helper_Form $form)
    {
        // 是否显示面包屑
        $showBreadcrumb = new Typecho_Widget_Helper_Form_Element_Radio(
            'showBreadcrumb',
            array(
                '1' => _t('显示'),
                '0' => _t('不显示')
            ),
            '1',
            _t('是否显示面包屑导航')
        );
        $form->addInput($showBreadcrumb);

        // 首页文字
        $homeText = new Typecho_Widget_Helper_Form_Element_Text(
            'homeText',
            NULL,
            '首页',
            _t('首页显示文字')
        );
        $form->addInput($homeText);

        // 分隔符
        $separator = new Typecho_Widget_Helper_Form_Element_Select(
            'separator',
            array(
                '»' => '»',
                '>' => '>',
                '/' => '/',
                '→' => '→'
            ),
            '»',
            _t('分隔符样式')
        );
        $form->addInput($separator);

        // 是否显示当前页面
        $showCurrent = new Typecho_Widget_Helper_Form_Element_Radio(
            'showCurrent',
            array(
                '1' => _t('显示'),
                '0' => _t('不显示')
            ),
            '1',
            _t('是否显示当前页面')
        );
        $form->addInput($showCurrent);

        // 是否显示分类
        $showCategory = new Typecho_Widget_Helper_Form_Element_Radio(
            'showCategory',
            array(
                '1' => _t('显示'),
                '0' => _t('不显示')
            ),
            '1',
            _t('文章页面是否显示分类')
        );
        $form->addInput($showCategory);
    }

    /**
     * 个人配置面板
     */
    public static function personalConfig(Typecho_Widget_Helper_Form $form) {}

    /**
     * 输出面包屑导航（前端调用方法）
     */
    public static function show($widget = null)
    {
        $options = Helper::options();
        $config = $options->plugin('SimpleBreadcrumb');
        
        // 检查是否显示
        if (!$config->showBreadcrumb) {
            return;
        }
        
        // 如果没有传递widget，使用全局
        if ($widget === null) {
            $widget = Typecho_Widget::widget('Widget_Archive');
        }
        
        // 检查是否在首页且需要显示
        if ($widget->is('index')) {
            return;
        }
        
        // 获取面包屑HTML
        $breadcrumb = self::generateBreadcrumb($widget, $config);
        
        if (!empty($breadcrumb)) {
            // 输出CSS和面包屑HTML
            $html = '<style>' . self::getStyles() . '</style>';
            $html .= '<div class="simple-breadcrumb">' . $breadcrumb . '</div>';
            
            echo $html;
        }
    }

    /**
     * 生成面包屑HTML
     */
    private static function generateBreadcrumb($widget, $config)
    {
        $breadcrumbs = array();
        $options = Helper::options();
        
        // 添加首页
        $homeText = isset($config->homeText) ? $config->homeText : '首页';
        $breadcrumbs[] = '<a href="' . $options->siteUrl . '" class="breadcrumb-home">' . 
                         htmlspecialchars($homeText) . '</a>';
        
        $separator = isset($config->separator) ? $config->separator : '»';
        $showCurrent = isset($config->showCurrent) ? $config->showCurrent : '1';
        $showCategory = isset($config->showCategory) ? $config->showCategory : '1';
        
        // 分类页面
        if ($widget->is('category')) {
            $category = $widget->getArchiveTitle();
            if ($showCurrent) {
                $breadcrumbs[] = '<span class="breadcrumb-current">' . htmlspecialchars($category) . '</span>';
            }
        }
        
        // 文章页面
        elseif ($widget->is('post')) {
            // 添加分类
            if ($showCategory) {
                $categories = $widget->categories;
                if ($categories && count($categories) > 0) {
                    $category = current($categories);
                    $breadcrumbs[] = '<a href="' . $category['permalink'] . '" class="breadcrumb-category">' . 
                                     htmlspecialchars($category['name']) . '</a>';
                }
            }
            
            // 添加当前文章
            if ($showCurrent) {
                $breadcrumbs[] = '<span class="breadcrumb-current">' . htmlspecialchars($widget->title) . '</span>';
            }
        }
        
        // 独立页面
        elseif ($widget->is('page')) {
            // 处理父页面（如果有）
            if ($widget->parent > 0) {
                $parent = $widget->widget('Widget_Archive', "type=page&pageId={$widget->parent}");
                if ($parent->have()) {
                    $breadcrumbs[] = '<a href="' . $parent->permalink . '" class="breadcrumb-parent">' . 
                                     htmlspecialchars($parent->title) . '</a>';
                }
            }
            
            if ($showCurrent) {
                $breadcrumbs[] = '<span class="breadcrumb-current">' . htmlspecialchars($widget->title) . '</span>';
            }
        }
        
        // 标签页面
        elseif ($widget->is('tag')) {
            if ($showCurrent) {
                $tag = $widget->getArchiveTitle();
                $breadcrumbs[] = '<span class="breadcrumb-current">标签: ' . htmlspecialchars($tag) . '</span>';
            }
        }
        
        // 作者页面
        elseif ($widget->is('author')) {
            if ($showCurrent) {
                $author = $widget->getArchiveTitle();
                $breadcrumbs[] = '<span class="breadcrumb-current">作者: ' . htmlspecialchars($author) . '</span>';
            }
        }
        
        // 日期归档
        elseif ($widget->is('archive') && !$widget->is('category') && !$widget->is('tag') && !$widget->is('author')) {
            if ($showCurrent) {
                $archive = $widget->getArchiveTitle();
                $breadcrumbs[] = '<span class="breadcrumb-current">' . htmlspecialchars($archive) . '</span>';
            }
        }
        
        // 搜索页面
        elseif ($widget->is('search')) {
            if ($showCurrent) {
                $keywords = $widget->keywords;
                $breadcrumbs[] = '<span class="breadcrumb-current">搜索: ' . htmlspecialchars($keywords) . '</span>';
            }
        }
        
        // 如果没有面包屑内容（只有首页），根据设置决定是否显示
        if (count($breadcrumbs) <= 1) {
            return ''; // 只显示首页时不输出
        }
        
        // 组合HTML
        $html = '<nav class="breadcrumb-nav" aria-label="面包屑导航">';
        $html .= '<ol class="breadcrumb-list">';
        
        $count = count($breadcrumbs);
        foreach ($breadcrumbs as $index => $crumb) {
            $html .= '<li class="breadcrumb-item">';
            $html .= $crumb;
            if ($index < $count - 1) {
                $html .= '<span class="breadcrumb-separator">' . htmlspecialchars($separator) . '</span>';
            }
            $html .= '</li>';
        }
        
        $html .= '</ol>';
        $html .= '</nav>';
        
        return $html;
    }

    /**
     * 输出CSS样式到footer（保持空，避免重复加载）
     */
    public static function footer()
    {
        // CSS已经在show()方法中内联输出
    }

    /**
     * 获取CSS样式 - 简化版，专门适配.dark夜间模式
     */
    private static function getStyles()
    {
        return '
        /* Simple Breadcrumb Navigation CSS - v3.0.0 */
        
        /* 基础样式 */
        .simple-breadcrumb {
            margin: 20px 0;
            padding: 15px 0;
            font-size: 14px;
            line-height: 1.5;
            clear: both;
            text-align: center;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        }
        
        /* 导航结构 */
        .breadcrumb-nav {
            display: inline-block;
            max-width: 100%;
        }
        
        .breadcrumb-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
        }
        
        .breadcrumb-item {
            display: inline-flex;
            align-items: center;
            margin: 5px 0;
        }
        
        .breadcrumb-item a {
            text-decoration: none;
            padding: 4px 8px;
            border-radius: 4px;
            transition: all 0.2s ease;
            font-weight: 500;
            color: #1e87f0;
            background-color: rgba(30, 135, 240, 0.1);
        }
        
        .breadcrumb-item a:hover {
            color: #0d6efd;
            background-color: rgba(30, 135, 240, 0.2);
            transform: translateY(-1px);
        }
        
        .breadcrumb-item span.breadcrumb-current {
            font-weight: 600;
            padding: 4px 8px;
            border-radius: 4px;
            color: #333;
            background-color: rgba(0, 0, 0, 0.05);
        }
        
        .breadcrumb-separator {
            margin: 0 10px;
            opacity: 0.6;
            font-weight: 300;
            color: #666;
        }
        
        /* ========== .dark 夜间模式适配 ========== */
        .dark .simple-breadcrumb {
            background-color: #1a1d21;
            border-radius: 8px;
            padding: 15px 20px;
            border: 1px solid #343a40;
        }
        
        .dark .breadcrumb-item a {
            color: #4dabf7;
            background-color: rgba(77, 171, 247, 0.1);
        }
        
        .dark .breadcrumb-item a:hover {
            color: #339af0;
            background-color: rgba(77, 171, 247, 0.2);
        }
        
        .dark .breadcrumb-item span.breadcrumb-current {
            color: #e9ecef;
            background-color: rgba(255, 255, 255, 0.05);
        }
        
        .dark .breadcrumb-separator {
            color: #adb5bd;
        }
        
        /* ========== 响应式设计 ========== */
        @media (max-width: 768px) {
            .simple-breadcrumb {
                margin: 15px 0;
                padding: 12px 15px;
                font-size: 13px;
                text-align: left;
            }
            
            .breadcrumb-list {
                justify-content: flex-start;
                overflow-x: auto;
                white-space: nowrap;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 5px;
            }
            
            .breadcrumb-item {
                flex-shrink: 0;
            }
            
            .breadcrumb-separator {
                margin: 0 8px;
            }
            
            .dark .simple-breadcrumb {
                padding: 12px 15px;
            }
        }
        
        @media (max-width: 480px) {
            .simple-breadcrumb {
                margin: 10px 0;
                padding: 10px 12px;
                font-size: 12px;
            }
            
            .breadcrumb-item a,
            .breadcrumb-item span.breadcrumb-current {
                padding: 3px 6px;
            }
            
            .breadcrumb-separator {
                margin: 0 6px;
            }
            
            .dark .simple-breadcrumb {
                padding: 10px 12px;
                border-radius: 6px;
            }
        }
        
        /* ========== 打印样式 ========== */
        @media print {
            .simple-breadcrumb {
                display: none;
            }
        }
        
        /* ========== 无障碍支持 ========== */
        .breadcrumb-item a:focus {
            outline: 2px solid #1e87f0;
            outline-offset: 2px;
        }
        
        .dark .breadcrumb-item a:focus {
            outline-color: #4dabf7;
        }
        ';
    }
}
?>