feat: 后台管理添加查看用户对话记录功能

backend/app.py

@@ -641,6 +641,36 @@ def get_user_conversations(user_id):
     return jsonify(conversations)
 
 
+@app.route('/api/user/<int:user_id>/conversations/<int:conv_id>', methods=['GET'])
+def get_user_conversation_detail(user_id, conv_id):
+    """获取单个对话详情"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        SELECT id, title, agent_id, messages, created_at, updated_at 
+        FROM conversations WHERE id = ? AND user_id = ?
+    ''', (conv_id, user_id))
+    
+    row = cursor.fetchone()
+    conn.close()
+    
+    if not row:
+        return jsonify({'error': '对话不存在'}), 404
+    
+    conv = dict(row)
+    try:
+        conv['messages'] = json.loads(conv['messages']) if conv['messages'] else []
+    except:
+        conv['messages'] = []
+    
+    conv['id'] = str(conv['id'])
+    conv['createdAt'] = int(datetime.strptime(conv['created_at'], '%Y-%m-%d %H:%M:%S').timestamp() * 1000) if conv['created_at'] else 0
+    conv['updatedAt'] = int(datetime.strptime(conv['updated_at'], '%Y-%m-%d %H:%M:%S').timestamp() * 1000) if conv['updated_at'] else 0
+    conv['agentId'] = conv['agent_id']
+    
+    return jsonify(conv)
+
+
 @app.route('/api/user/<int:user_id>/conversations', methods=['POST'])
 def create_user_conversation(user_id):
     """创建新对话"""

www/admin.js

@@ -250,6 +250,7 @@ async function loadUsersPage(content) {
                 <td>
                   <div class="action-btns">
                     <button class="action-btn edit" onclick="showEditUserModal(${u.id})">编辑</button>
+                    <button class="action-btn" style="background: #8b5cf6; color: white;" onclick="showUserConversations(${u.id}, '${u.username}')">查看对话</button>
                     <button class="action-btn" style="background: #f59e0b; color: white;" onclick="showResetPasswordModal(${u.id})">重置密码</button>
                     <button class="action-btn delete" onclick="deleteUser(${u.id})">删除</button>
                   </div>
@@ -396,6 +397,150 @@ async function deleteUser(id) {
   loadPage('users');
 }
 
+// ==================== 查看用户对话记录 ====================
+
+async function showUserConversations(userId, username) {
+  // 加载用户对话列表
+  const conversations = await fetchAPI(`/api/user/${userId}/conversations`);
+  
+  const content = document.getElementById('mainContent');
+  
+  content.innerHTML = `
+    <div class="content-header">
+      <h1 class="content-title">用户对话记录 - ${username}</h1>
+      <button class="add-btn" style="background: #718096;" onclick="loadPage('users')">返回用户列表</button>
+    </div>
+    
+    <div class="stats-grid" style="grid-template-columns: repeat(3, 1fr);">
+      <div class="stat-card">
+        <div class="stat-icon">💬</div>
+        <div class="stat-value">${conversations.length}</div>
+        <div class="stat-label">对话总数</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">🤖</div>
+        <div class="stat-value">${conversations.filter(c => c.agentId).length}</div>
+        <div class="stat-label">智能体对话</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">📝</div>
+        <div class="stat-value">${conversations.reduce((sum, c) => sum + (c.messages?.length || 0), 0)}</div>
+        <div class="stat-label">消息总数</div>
+      </div>
+    </div>
+    
+    <div class="data-table">
+      <table>
+        <thead>
+          <tr>
+            <th>ID</th>
+            <th>标题</th>
+            <th>智能体</th>
+            <th>消息数</th>
+            <th>创建时间</th>
+            <th>更新时间</th>
+            <th>操作</th>
+          </tr>
+        </thead>
+        <tbody>
+          ${conversations.length === 0 ? '<tr><td colspan="7" style="text-align: center; color: #999;">暂无对话记录</td></tr>' : 
+            conversations.map(conv => `
+              <tr>
+                <td>${conv.id}</td>
+                <td>${conv.title || '新对话'}</td>
+                <td>${conv.agentId ? getAgentName(conv.agentId) : '普通对话'}</td>
+                <td>${conv.messages?.length || 0}</td>
+                <td>${formatDate(conv.createdAt || conv.created_at)}</td>
+                <td>${formatDate(conv.updatedAt || conv.updated_at)}</td>
+                <td>
+                  <div class="action-btns">
+                    <button class="action-btn edit" onclick="showConversationMessages(${userId}, ${conv.id}, '${conv.title || '新对话'}')">查看详情</button>
+                    <button class="action-btn delete" onclick="deleteUserConversation(${userId}, ${conv.id})">删除</button>
+                  </div>
+                </td>
+              </tr>
+            `).join('')
+          }
+        </tbody>
+      </table>
+    </div>
+  `;
+}
+
+function getAgentName(agentId) {
+  const agent = agents.find(a => a.agent_id === agentId);
+  return agent ? `${agent.avatar} ${agent.name}` : agentId;
+}
+
+async function showConversationMessages(userId, convId, title) {
+  // 获取对话详情
+  const conv = await fetchAPI(`/api/user/${userId}/conversations/${convId}`);
+  
+  const content = document.getElementById('mainContent');
+  
+  const messages = conv.messages || [];
+  
+  content.innerHTML = `
+    <div class="content-header">
+      <h1 class="content-title">对话详情 - ${title}</h1>
+      <button class="add-btn" style="background: #718096;" onclick="showUserConversations(${userId}, '用户')">返回对话列表</button>
+    </div>
+    
+    <div style="background: white; padding: 16px; border-radius: 12px; margin-bottom: 16px;">
+      <div style="display: flex; gap: 16px; color: #718096;">
+        <span>💬 消息数: ${messages.length}</span>
+        <span>🤖 智能体: ${conv.agentId ? getAgentName(conv.agentId) : '普通对话'}</span>
+        <span>📅 创建: ${formatDate(conv.createdAt || conv.created_at)}</span>
+      </div>
+    </div>
+    
+    <div class="data-table">
+      <table>
+        <thead>
+          <tr>
+            <th style="width: 60px;">序号</th>
+            <th style="width: 80px;">角色</th>
+            <th>内容</th>
+            <th style="width: 150px;">时间</th>
+          </tr>
+        </thead>
+        <tbody>
+          ${messages.length === 0 ? '<tr><td colspan="4" style="text-align: center; color: #999;">暂无消息</td></tr>' : 
+            messages.map((msg, idx) => `
+              <tr>
+                <td>${idx + 1}</td>
+                <td style="color: ${msg.role === 'user' ? '#3b82f6' : '#10b981'};">
+                  ${msg.role === 'user' ? '👤 用户' : '🤖 AI'}
+                </td>
+                <td style="max-width: 500px; white-space: pre-wrap; word-break: break-all;">
+                  ${escapeHtml(msg.content?.slice(0, 500) || '')}${msg.content?.length > 500 ? '...' : ''}
+                  ${msg.thinking ? `<div style="color: #f59e0b; margin-top: 8px; font-size: 12px;">💭 思考: ${escapeHtml(msg.thinking?.slice(0, 200) || '')}...</div>` : ''}
+                </td>
+                <td>${formatDate(msg.timestamp || msg.createdAt)}</td>
+              </tr>
+            `).join('')
+          }
+        </tbody>
+      </table>
+    </div>
+  `;
+}
+
+async function deleteUserConversation(userId, convId) {
+  if (!confirm('确定删除此对话？此操作不可恢复！')) return;
+  
+  await fetchAPI(`/api/user/${userId}/conversations/${convId}`, 'DELETE');
+  showToast('删除成功');
+  showUserConversations(userId, '用户');
+}
+
+function escapeHtml(text) {
+  if (!text) return '';
+  const div = document.createElement('div');
+  div.textContent = text;
+  return div.innerHTML;
+}
+
 // ==================== 大模型配置页面 ====================
 
 async function loadLLMPage(content) {