<?php
class CommentAnalyzer {
    // 关键词和正则表达式配置
    private $config = [
        'positive' => [
            'keywords' => [
                '有效', '好用', '好了', '治愈', '见效', '不错', '管用', '有用',
                '灵验', '缓解', '痊愈', '见效', '神效', '推荐', '感谢', '好了',
                '管用', '有效果', '有效果', '奏效', '改善', '见效快', '神奇',
                '有效', '有效果', '有效果', '有效果', '有效果', '有效果'
            ],
            'patterns' => [
                '/(喝|吃|用)了?\s*\d+\s*次?[就]?(好|痊愈|缓解|不咳|不痛)了/u',
                '/(效果|结果)\s*(非常|很)?\s*(好|明显|不错|显著|惊人)/u',
                '/(尝试|试了|用了)\s*\d+\s*[天个]?\s*(就)?(好|痊愈|缓解|见效)/u',
                '/(咳嗽|咳|痛|疼|症状)\s*(明显)?\s*(减轻|缓解|消失|好了)/u',
                '/(感谢|谢谢)\s*(分享|博主|张医生|宝旬)/u'
            ]
        ],
        'negative' => [
            'keywords' => [
                '无效', '没用', '不好', '没效果', '不行', '不见效', '没好转',
                '加重', '恶化', '白费', '失望', '避雷', '没用', '没效果',
                '无效果', '无改善', '没作用', '不灵', '骗人', '忽悠', '上当'
            ],
            'patterns' => [
                '/(还是|依然|仍旧|仍然)\s*(咳|难受|痛|疼|没效果)/u',
                '/(一点|完全|根本|丝毫)\s*没(效果|用|好转|作用|改善)/u',
                '/(不仅|不但)\s*没(好|改善).*(反而|而且)\s*(加重|恶化)/u',
                '/(浪费|白费|白忙|白折腾)\s*(时间|精力)/u',
                '/(失望|后悔|上当|骗人|忽悠|别信)\s*(了|吧|！)/u'
            ]
        ]
    ];

    /**
     * 分析评论情感
     *
     * @param string $comment 评论内容
     * @return string 情感分类: 'positive', 'negative' 或 'neutral'
     */
    public function analyze($comment) {
        // 预处理：去除多余空格和特殊字符
        $comment = $this->preprocess($comment);

        // 1. 检查否定词（优先级高）
        foreach ($this->config['negative']['keywords'] as $word) {
            if (mb_strpos($comment, $word) !== false) {
                return 'negative';
            }
        }

        // 2. 检查肯定词
        foreach ($this->config['positive']['keywords'] as $word) {
            if (mb_strpos($comment, $word) !== false) {
                return 'positive';
            }
        }

        // 3. 检查否定句式
        foreach ($this->config['negative']['patterns'] as $pattern) {
            if (preg_match($pattern, $comment)) {
                return 'negative';
            }
        }

        // 4. 检查肯定句式
        foreach ($this->config['positive']['patterns'] as $pattern) {
            if (preg_match($pattern, $comment)) {
                return 'positive';
            }
        }

        return 'neutral';
    }

    /**
     * 预处理评论内容
     */
    private function preprocess($comment) {
        // 移除多余空格
        $comment = preg_replace('/\s+/u', ' ', $comment);
        // 移除常见标点符号（保留中文字符）
        $comment = preg_replace('/[^\p{Han}\p{P}\w\s]/u', '', $comment);
        return trim($comment);
    }
}

// ===================== 使用示例 =====================
$analyzer = new CommentAnalyzer();

// 微博内容
$weibo = "针灸匠张宝旬\n原创\n25-7-7 14:41\n发布于 北京\n来自 华为 Mate X5 典藏版\n#张宝旬妙招# 刀片桑用花椒蒸梨。按图示做。汤水清甜微麻，一点不辣，还带股淡淡的花椒香味，吃梨肉、喝梨汤，效果好。 ​​​";

// 示例评论
$comments = [
    "去年冬天寒咳，直接切梨加花椒加少许水蒸半个小时，喝几次就好了",
    "试了完全没效果，咳嗽更严重了",
    "花椒蒸梨一点用都没有，避雷！",
    "喝了三天，依然咳得睡不着",
    "效果非常明显，第二天就不咳了",
    "这个方子对我很管用，咳嗽明显减轻了",
    "按照方法做了，但感觉没什么变化",
    "张医生的方法总是这么神奇，感谢分享！",
    "孩子咳嗽试了这个方法，结果反而加重了",
    "蒸梨的时候花椒放多了，味道有点怪",
    "这个方法简单易行，推荐给大家",
    "试了两次，效果不明显，可能不适合我",
    "中医小妙招真是博大精深",
    "花椒蒸梨？这是什么奇怪的组合",
    "喝了当晚就不怎么咳了，太有效了！",
    "完全没好转，白忙活一场",
    "这个方法在抖音上看到过，亲测有效",
    "咳嗽没缓解，反而胃不舒服了",
    "张宝旬医生的方法值得信赖",
    "没坚持喝，不知道效果如何"
];

// 分析评论并分类
$results = [
    'positive' => [],
    'negative' => []
];

foreach ($comments as $comment) {
    $result = $analyzer->analyze($comment);
    if ($result !== 'neutral') {
        $results[$result][] = $comment;
    }
}

// ===================== 显示结果 =====================
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>中医小妙招评论分析工具</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Microsoft YaHei', sans-serif;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
            padding: 20px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            border-radius: 10px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }
        header {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: white;
            padding: 25px 30px;
            position: relative;
        }
        h1 {
            font-size: 28px;
            margin-bottom: 10px;
        }
        .subtitle {
            font-size: 16px;
            opacity: 0.9;
        }
        .weibo-card {
            background: #eef5ff;
            border-left: 4px solid #2575fc;
            padding: 20px;
            margin: 20px;
            border-radius: 5px;
        }
        .weibo-content {
            font-size: 18px;
            line-height: 1.7;
            color: #1a1a1a;
        }
        .weibo-meta {
            color: #666;
            font-size: 14px;
            margin-top: 10px;
        }
        .results-container {
            display: flex;
            flex-wrap: wrap;
            padding: 20px;
        }
        .result-column {
            flex: 1;
            min-width: 300px;
            padding: 15px;
        }
        .result-header {
            font-size: 20px;
            padding: 15px 0;
            margin-bottom: 15px;
            border-bottom: 2px solid;
            display: flex;
            align-items: center;
        }
        .positive .result-header {
            color: #28a745;
            border-bottom-color: #28a745;
        }
        .negative .result-header {
            color: #dc3545;
            border-bottom-color: #dc3545;
        }
        .result-header i {
            margin-right: 10px;
            font-size: 24px;
        }
        .comment-list {
            list-style: none;
        }
        .comment-item {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 15px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            border-left: 4px solid;
            transition: transform 0.2s;
        }
        .comment-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .positive .comment-item {
            border-left-color: #28a745;
            background: #f0fff4;
        }
        .negative .comment-item {
            border-left-color: #dc3545;
            background: #fff0f0;
        }
        .comment-text {
            margin-bottom: 8px;
            font-size: 16px;
        }
        .comment-label {
            display: inline-block;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: bold;
        }
        .positive .comment-label {
            background: #28a745;
            color: white;
        }
        .negative .comment-label {
            background: #dc3545;
            color: white;
        }
        .stats {
            background: #f8f9fa;
            padding: 20px;
            text-align: center;
            border-top: 1px solid #eee;
            font-size: 18px;
            color: #555;
        }
        .highlight {
            font-weight: bold;
            font-size: 24px;
            color: #2575fc;
            margin: 0 5px;
        }
        @media (max-width: 768px) {
            .results-container {
                flex-direction: column;
            }
            .result-column {
                min-width: 100%;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <header>
            <h1>中医小妙招评论分析工具</h1>
            <p class="subtitle">自动筛选用户对中医方法有效性的反馈</p>
        </header>

        <div class="weibo-card">
            <div class="weibo-content"><?= nl2br(htmlspecialchars($weibo)) ?></div>
            <div class="weibo-meta">博主：针灸匠张宝旬 | 发布时间：2025-07-07</div>
        </div>

        <div class="stats">
            分析结果：共 <span class="highlight"><?= count($comments) ?></span> 条评论，
            其中有效反馈 <span class="highlight"><?= count($results['positive']) ?></span> 条，
            无效反馈 <span class="highlight"><?= count($results['negative']) ?></span> 条
        </div>

        <div class="results-container">
            <div class="result-column positive">
                <div class="result-header">
                    <span>✅ 有效反馈 (<?= count($results['positive']) ?>)</span>
                </div>
                <ul class="comment-list">
                    <?php foreach ($results['positive'] as $comment): ?>
                    <li class="comment-item">
                        <div class="comment-text"><?= htmlspecialchars($comment) ?></div>
                        <span class="comment-label">有效</span>
                    </li>
                    <?php endforeach; ?>
                </ul>
            </div>

            <div class="result-column negative">
                <div class="result-header">
                    <span>❌ 无效反馈 (<?= count($results['negative']) ?>)</span>
                </div>
                <ul class="comment-list">
                    <?php foreach ($results['negative'] as $comment): ?>
                    <li class="comment-item">
                        <div class="comment-text"><?= htmlspecialchars($comment) ?></div>
                        <span class="comment-label">无效</span>
                    </li>
                    <?php endforeach; ?>
                </ul>
            </div>
        </div>
    </div>
</body>
</html>