fix: make admin portal robust against db errors

@@ -5,15 +5,14 @@ require_once __DIR__ . '/../vendor/autoload.php';
 if (file_exists(__DIR__ . '/../.env')) {
 if (file_exists(__DIR__ . '/../.env')) {
     $lines = file(__DIR__ . '/../.env', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
     $lines = file(__DIR__ . '/../.env', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
     foreach ($lines as $line) {
     foreach ($lines as $line) {
-        if (strpos(trim($line), '#') === 0)
-            continue;
+        if (strpos(trim($line), '#') === 0) continue;
         list($name, $value) = explode('=', $line, 2);
         list($name, $value) = explode('=', $line, 2);
         $_ENV[trim($name)] = trim($value);
         $_ENV[trim($name)] = trim($value);
     }
     }
 }
 }
 
 
-// 简单的一致性检查 (实际生产环境应加上 Session 登录验证)
-// 这里假设通过 Basic Auth 或内网访问
+$pdo = null;
+$message = '';
 
 
 // 连接数据库
 // 连接数据库
 try {
 try {
@@ -21,152 +20,154 @@ try {
     $pdo = new PDO($dsn, $_ENV['DB_USER'], $_ENV['DB_PASS']);
     $pdo = new PDO($dsn, $_ENV['DB_USER'], $_ENV['DB_PASS']);
     $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
     $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 } catch (PDOException $e) {
 } catch (PDOException $e) {
-    die("Database connection failed: " . $e->getMessage());
+    // FATAL: Do NOT use die() in Workerman, it kills the worker process!
+    $message = "<div style='color: red; padding: 20px; text-align: center; border: 1px solid red; background: #ffe6e6;'>Database Connection Failed: " . htmlspecialchars($e->getMessage()) . "</div>";
+    $pdo = null; 
 }
 }
 
 
 // 处理绑定表单提交
 // 处理绑定表单提交
-$message = '';
-if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && $_POST['action'] === 'bind') {
+if ($pdo && $_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && $_POST['action'] === 'bind') {
     $deviceId = trim($_POST['device_id']);
     $deviceId = trim($_POST['device_id']);
     $phone = trim($_POST['phone']);
     $phone = trim($_POST['phone']);
     $isPrimary = isset($_POST['is_primary']) ? 1 : 0;
     $isPrimary = isset($_POST['is_primary']) ? 1 : 0;
 
 
     if ($deviceId && $phone) {
     if ($deviceId && $phone) {
         // 1. 查找用户
         // 1. 查找用户
-        $stmt = $pdo->prepare("SELECT id, nickname FROM users WHERE phone = ?");
-        $stmt->execute([$phone]);
-        $user = $stmt->fetch(PDO::FETCH_ASSOC);
-
-        if ($user) {
-            // 2. 插入/更新绑定
-            // 先检查是否已存在
-            $check = $pdo->prepare("SELECT id FROM user_device_bindings WHERE user_id = ? AND device_id = ?");
-            $check->execute([$user['id'], $deviceId]);
-
-            if (!$check->fetch()) {
-                $bind = $pdo->prepare("INSERT INTO user_device_bindings (user_id, device_id, is_primary, created_at) VALUES (?, ?, ?, NOW())");
-                $bind->execute([$user['id'], $deviceId, $isPrimary]);
-                $message = "<div style='color: green; margin-bottom: 20px;'>✅ 成功将设备 <b>$deviceId</b> 绑定给用户 <b>{$user['nickname']}</b></div>";
+        try {
+            $stmt = $pdo->prepare("SELECT id, nickname FROM users WHERE phone = ?");
+            $stmt->execute([$phone]);
+            $user = $stmt->fetch(PDO::FETCH_ASSOC);
+    
+            if ($user) {
+                // 2. 插入/更新绑定
+                // 先检查是否已存在
+                $check = $pdo->prepare("SELECT id FROM user_device_bindings WHERE user_id = ? AND device_id = ?");
+                $check->execute([$user['id'], $deviceId]);
+                
+                if (!$check->fetch()) {
+                    $bind = $pdo->prepare("INSERT INTO user_device_bindings (user_id, device_id, is_primary, created_at) VALUES (?, ?, ?, NOW())");
+                    $bind->execute([$user['id'], $deviceId, $isPrimary]);
+                    $message = "<div style='color: green; margin-bottom: 20px; background: #e6fffa; padding: 10px; border-radius: 4px;'>✅ 成功将设备 <b>$deviceId</b> 绑定给用户 <b>{$user['nickname']}</b></div>";
+                } else {
+                    $message = "<div style='color: orange; margin-bottom: 20px;'>⚠️ 该用户已经绑定过此设备，无需重复操作。</div>";
+                }
             } else {
             } else {
-                $message = "<div style='color: orange; margin-bottom: 20px;'>⚠️ 该用户已经绑定过此设备，无需重复操作。</div>";
+                $message = "<div style='color: red; margin-bottom: 20px;'>❌ 手机号 <b>$phone</b> 未找到。请确保用户已在小程序登录过。</div>";
             }
             }
-        } else {
-            $message = "<div style='color: red; margin-bottom: 20px;'>❌ 手机号 <b>$phone</b> 未找到。请确保用户已在小程序登录过。</div>";
+        } catch (Exception $e) {
+             $message = "<div style='color: red;'>Operation Failed: " . $e->getMessage() . "</div>";
         }
         }
     }
     }
 }
 }
 
 
 // 获取设备列表 (Mock Data + Binding Count)
 // 获取设备列表 (Mock Data + Binding Count)
-// 实际项目应从 Redis 或 devices 表获取在线状态，这里先从 bindings 表反查活跃情况
-// 为了简化，我们列出 distinct device_id from bindings，或者列出 bindings
-$bindings = $pdo->query("
-    SELECT b.id, u.nickname, u.phone, b.device_id, b.is_primary, b.created_at
-    FROM user_device_bindings b
-    JOIN users u ON b.user_id = u.id
-    ORDER BY b.created_at DESC
-")->fetchAll(PDO::FETCH_ASSOC);
+$bindings = [];
+if ($pdo) {
+    try {
+        $bindings = $pdo->query("
+            SELECT b.id, u.nickname, u.phone, b.device_id, b.is_primary, b.created_at
+            FROM user_device_bindings b
+            JOIN users u ON b.user_id = u.id
+            ORDER BY b.created_at DESC
+        ")->fetchAll(PDO::FETCH_ASSOC);
+    } catch (Exception $e) {
+        if (empty($message)) $message = "<div style='color: red;'>Load Error: " . $e->getMessage() . "</div>";
+    }
+}
 
 
 ?>
 ?>
 <!DOCTYPE html>
 <!DOCTYPE html>
 <html lang="zh-CN">
 <html lang="zh-CN">
-
 <head>
 <head>
     <meta charset="UTF-8">
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Moltbot 管理后台</title>
     <title>Moltbot 管理后台</title>
     <link rel="stylesheet" href="style.css">
     <link rel="stylesheet" href="style.css">
+    <link rel="icon" href="data:,">
 </head>
 </head>
-
 <body>
 <body>
 
 
-    <div class="header">
-        <div class="brand">Moltbot Admin</div>
-        <div>
-            <?php echo date('Y-m-d H:i'); ?>
-        </div>
-    </div>
-
-    <div class="container">
+<div class="header">
+    <div class="brand">Moltbot Admin</div>
+    <div><?php echo date('Y-m-d H:i'); ?></div>
+</div>
 
 
-        <?php echo $message; ?>
+<div class="container">
+    
+    <?php echo $message; ?>
 
 
-        <!-- 新增绑定卡片 -->
+    <?php if (!$pdo): ?>
         <div class="card">
         <div class="card">
-            <div class="title">新增绑定</div>
-            <form method="POST" action="">
-                <input type="hidden" name="action" value="bind">
-                <div style="display: flex; gap: 20px;">
-                    <div class="form-group" style="flex: 1;">
-                        <label class="form-label">设备 ID</label>
-                        <input type="text" name="device_id" class="form-control" placeholder="例如: dev_test_001"
-                            required>
-                    </div>
-                    <div class="form-group" style="flex: 1;">
-                        <label class="form-label">用户手机号</label>
-                        <input type="text" name="phone" class="form-control" placeholder="输入用户注册手机号" required>
-                    </div>
+            <h3 style="color: red;">System Error</h3>
+            <p>Cannot connect to the database. Please check your configuration.</p>
+        </div>
+    <?php else: ?>
+
+    <!-- 新增绑定卡片 -->
+    <div class="card">
+        <div class="title">新增绑定</div>
+        <form method="POST" action="">
+            <input type="hidden" name="action" value="bind">
+            <div style="display: flex; gap: 20px;">
+                <div class="form-group" style="flex: 1;">
+                    <label class="form-label">设备 ID</label>
+                    <input type="text" name="device_id" class="form-control" placeholder="例如: dev_test_001" required>
                 </div>
                 </div>
-                <div class="form-group">
-                    <label>
-                        <input type="checkbox" name="is_primary" value="1" checked> 设为主设备 (默认)
-                    </label>
+                <div class="form-group" style="flex: 1;">
+                    <label class="form-label">用户手机号</label>
+                    <input type="text" name="phone" class="form-control" placeholder="输入用户注册手机号" required>
                 </div>
                 </div>
-                <button type="submit" class="btn btn-primary">立即绑定</button>
-            </form>
-        </div>
-
-        <!-- 绑定列表卡片 -->
-        <div class="card">
-            <div class="title">绑定记录 (
-                <?php echo count($bindings); ?>)
             </div>
             </div>
-            <table>
-                <thead>
-                    <tr>
-                        <th>用户</th>
-                        <th>手机号</th>
-                        <th>设备 ID</th>
-                        <th>主设备</th>
-                        <th>绑定时间</th>
-                        <th>操作</th>
-                    </tr>
-                </thead>
-                <tbody>
-                    <?php foreach ($bindings as $row): ?>
-                        <tr>
-                            <td>
-                                <?php echo htmlspecialchars($row['nickname']); ?>
-                            </td>
-                            <td>
-                                <?php echo htmlspecialchars($row['phone']); ?>
-                            </td>
-                            <td>
-                                <?php echo htmlspecialchars($row['device_id']); ?>
-                            </td>
-                            <td>
-                                <?php if ($row['is_primary']): ?>
-                                    <span style="color: var(--primary-color);">✔</span>
-                                <?php endif; ?>
-                            </td>
-                            <td>
-                                <?php echo $row['created_at']; ?>
-                            </td>
-                            <td>
-                                <a href="#" style="color: red; font-size: 12px; text-decoration: none;">解绑</a>
-                            </td>
-                        </tr>
-                    <?php endforeach; ?>
-                    <?php if (empty($bindings)): ?>
-                        <tr>
-                            <td colspan="6" style="text-align: center; color: #999;">暂无数据</td>
-                        </tr>
-                    <?php endif; ?>
-                </tbody>
-            </table>
-        </div>
+            <div class="form-group">
+                <label>
+                    <input type="checkbox" name="is_primary" value="1" checked> 设为主设备 (默认)
+                </label>
+            </div>
+            <button type="submit" class="btn btn-primary">立即绑定</button>
+        </form>
+    </div>
 
 
+    <!-- 绑定列表卡片 -->
+    <div class="card">
+        <div class="title">绑定记录 (<?php echo count($bindings); ?>)</div>
+        <table>
+            <thead>
+                <tr>
+                    <th>用户</th>
+                    <th>手机号</th>
+                    <th>设备 ID</th>
+                    <th>主设备</th>
+                    <th>绑定时间</th>
+                    <th>操作</th>
+                </tr>
+            </thead>
+            <tbody>
+                <?php foreach ($bindings as $row): ?>
+                <tr>
+                    <td><?php echo htmlspecialchars($row['nickname']); ?></td>
+                    <td><?php echo htmlspecialchars($row['phone']); ?></td>
+                    <td><?php echo htmlspecialchars($row['device_id']); ?></td>
+                    <td>
+                        <?php if ($row['is_primary']): ?>
+                            <span style="color: var(--primary-color);">✔</span>
+                        <?php endif; ?>
+                    </td>
+                    <td><?php echo $row['created_at']; ?></td>
+                    <td>
+                        <a href="#" style="color: red; font-size: 12px; text-decoration: none;">解绑</a>
+                    </td>
+                </tr>
+                <?php endforeach; ?>
+                <?php if (empty($bindings)): ?>
+                    <tr><td colspan="6" style="text-align: center; color: #999;">暂无数据</td></tr>
+                <?php endif; ?>
+            </tbody>
+        </table>
     </div>
     </div>
+    
+    <?php endif; ?>
 
 
-</body>
+</div>
 
 
+</body>
 </html>
 </html>