修復 too many connection 問題

app/admin/ip-cleanup/page.tsx

@@ -0,0 +1,442 @@
+'use client';
+
+import React, { useState, useEffect } from 'react';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { Alert, AlertDescription } from '@/components/ui/alert';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { Loader2, Database, AlertTriangle, Trash2, Eye, Zap, Globe } from 'lucide-react';
+
+interface ConnectionDetail {
+  ID: number;
+  USER: string;
+  HOST: string;
+  DB: string;
+  COMMAND: string;
+  TIME: number;
+  STATE: string;
+  INFO?: string;
+}
+
+interface ConnectionStatus {
+  ip: string;
+  connectionCount: number;
+  connections: ConnectionDetail[];
+}
+
+interface LocalStats {
+  clientIP: string;
+  trackedConnections: number;
+  connections: Array<{
+    connectionId: string;
+    createdAt: string;
+    lastUsed: string;
+    userAgent?: string;
+  }>;
+}
+
+export default function IPCleanupPage() {
+  const [connectionStatus, setConnectionStatus] = useState<ConnectionStatus | null>(null);
+  const [localStats, setLocalStats] = useState<LocalStats | null>(null);
+  const [loading, setLoading] = useState(false);
+  const [message, setMessage] = useState<string>('');
+  const [error, setError] = useState<string>('');
+  const [targetIP, setTargetIP] = useState<string>('');
+
+  // 獲取當前 IP 的連線狀態
+  const fetchCurrentIPStatus = async () => {
+    try {
+      setLoading(true);
+      const response = await fetch('/api/ip-cleanup?action=status');
+      const data = await response.json();
+      
+      if (data.success) {
+        setConnectionStatus(data.data);
+        setMessage('當前 IP 連線狀態更新成功');
+        setError('');
+      } else {
+        setError(data.error || '獲取當前 IP 連線狀態失敗');
+      }
+    } catch (err) {
+      setError('網路錯誤: ' + (err instanceof Error ? err.message : '未知錯誤'));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // 獲取指定 IP 的連線狀態
+  const fetchSpecificIPStatus = async () => {
+    if (!targetIP.trim()) {
+      setError('請輸入目標 IP 地址');
+      return;
+    }
+
+    try {
+      setLoading(true);
+      const response = await fetch(`/api/ip-cleanup?action=status-specific&ip=${encodeURIComponent(targetIP)}`);
+      const data = await response.json();
+      
+      if (data.success) {
+        setConnectionStatus(data.data);
+        setMessage(`指定 IP ${targetIP} 的連線狀態更新成功`);
+        setError('');
+      } else {
+        setError(data.error || '獲取指定 IP 連線狀態失敗');
+      }
+    } catch (err) {
+      setError('網路錯誤: ' + (err instanceof Error ? err.message : '未知錯誤'));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // 獲取本地連線統計
+  const fetchLocalStats = async () => {
+    try {
+      setLoading(true);
+      const response = await fetch('/api/ip-cleanup?action=local-stats');
+      const data = await response.json();
+      
+      if (data.success) {
+        setLocalStats(data.data);
+        setMessage('本地連線統計更新成功');
+        setError('');
+      } else {
+        setError(data.error || '獲取本地連線統計失敗');
+      }
+    } catch (err) {
+      setError('網路錯誤: ' + (err instanceof Error ? err.message : '未知錯誤'));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // 清理當前 IP 的連線
+  const cleanupCurrentIP = async () => {
+    if (!confirm('確定要清理當前 IP 的所有連線嗎？')) {
+      return;
+    }
+
+    try {
+      setLoading(true);
+      const response = await fetch('/api/ip-cleanup', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ action: 'cleanup-current' }),
+      });
+      
+      const data = await response.json();
+      
+      if (data.success) {
+        setMessage(data.message || '當前 IP 連線清理完成');
+        setError('');
+        await fetchCurrentIPStatus(); // 重新獲取狀態
+      } else {
+        setError(data.error || '當前 IP 連線清理失敗');
+      }
+    } catch (err) {
+      setError('當前 IP 連線清理錯誤: ' + (err instanceof Error ? err.message : '未知錯誤'));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // 清理指定 IP 的連線
+  const cleanupSpecificIP = async () => {
+    if (!targetIP.trim()) {
+      setError('請輸入目標 IP 地址');
+      return;
+    }
+
+    if (!confirm(`確定要清理 IP ${targetIP} 的所有連線嗎？`)) {
+      return;
+    }
+
+    try {
+      setLoading(true);
+      const response = await fetch('/api/ip-cleanup', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ 
+          action: 'cleanup-specific',
+          targetIP: targetIP.trim()
+        }),
+      });
+      
+      const data = await response.json();
+      
+      if (data.success) {
+        setMessage(data.message || `IP ${targetIP} 連線清理完成`);
+        setError('');
+        await fetchSpecificIPStatus(); // 重新獲取狀態
+      } else {
+        setError(data.error || `IP ${targetIP} 連線清理失敗`);
+      }
+    } catch (err) {
+      setError(`IP ${targetIP} 連線清理錯誤: ` + (err instanceof Error ? err.message : '未知錯誤'));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // 清理本地追蹤的連線
+  const cleanupLocalConnections = async () => {
+    try {
+      setLoading(true);
+      const response = await fetch('/api/ip-cleanup', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ action: 'cleanup-local' }),
+      });
+      
+      const data = await response.json();
+      
+      if (data.success) {
+        setMessage(data.message || '本地連線清理完成');
+        setError('');
+        await fetchLocalStats(); // 重新獲取統計
+      } else {
+        setError(data.error || '本地連線清理失敗');
+      }
+    } catch (err) {
+      setError('本地連線清理錯誤: ' + (err instanceof Error ? err.message : '未知錯誤'));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // 組件載入時獲取狀態
+  useEffect(() => {
+    fetchCurrentIPStatus();
+    fetchLocalStats();
+  }, []);
+
+  return (
+    <div className="container mx-auto p-6 space-y-6">
+      <div className="flex items-center justify-between">
+        <div>
+          <h1 className="text-3xl font-bold">IP 連線管理</h1>
+          <p className="text-muted-foreground">
+            基於 IP 地址的智能連線清理和管理
+          </p>
+        </div>
+        <div className="flex gap-2">
+          <Button 
+            onClick={fetchCurrentIPStatus} 
+            disabled={loading}
+            variant="outline"
+          >
+            {loading ? <Loader2 className="h-4 w-4 animate-spin" /> : <Eye className="h-4 w-4" />}
+            當前 IP
+          </Button>
+          <Button 
+            onClick={fetchLocalStats} 
+            disabled={loading}
+            variant="outline"
+          >
+            {loading ? <Loader2 className="h-4 w-4 animate-spin" /> : <Database className="h-4 w-4" />}
+            本地統計
+          </Button>
+        </div>
+      </div>
+
+      {/* 當前 IP 連線狀態 */}
+      {connectionStatus && (
+        <Card>
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2">
+              <Globe className="h-5 w-5" />
+              IP 連線狀態
+            </CardTitle>
+            <CardDescription>
+              IP: {connectionStatus.ip} | 連線數: {connectionStatus.connectionCount}
+            </CardDescription>
+          </CardHeader>
+          <CardContent className="space-y-4">
+            <div className="flex items-center gap-4">
+              <Badge variant="outline" className="text-lg px-3 py-1">
+                連線數: {connectionStatus.connectionCount}
+              </Badge>
+              <Badge 
+                variant={connectionStatus.connectionCount > 5 ? "destructive" : "default"}
+                className="text-lg px-3 py-1"
+              >
+                狀態: {connectionStatus.connectionCount > 5 ? "異常" : "正常"}
+              </Badge>
+            </div>
+          </CardContent>
+        </Card>
+      )}
+
+      {/* 本地連線統計 */}
+      {localStats && (
+        <Card>
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2">
+              <Database className="h-5 w-5" />
+              本地連線統計
+            </CardTitle>
+            <CardDescription>
+              客戶端 IP: {localStats.clientIP} | 追蹤連線數: {localStats.trackedConnections}
+            </CardDescription>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-2">
+              {localStats.connections.map((conn, index) => (
+                <div key={index} className="flex items-center justify-between p-2 border rounded">
+                  <div>
+                    <p className="text-sm font-medium">連線 ID: {conn.connectionId}</p>
+                    <p className="text-xs text-muted-foreground">
+                      創建: {new Date(conn.createdAt).toLocaleString()} | 
+                      最後使用: {new Date(conn.lastUsed).toLocaleString()}
+                    </p>
+                  </div>
+                </div>
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+      )}
+
+      {/* 操作按鈕 */}
+      <Card>
+        <CardHeader>
+          <CardTitle className="flex items-center gap-2">
+            <Trash2 className="h-5 w-5" />
+            IP 連線清理
+          </CardTitle>
+          <CardDescription>
+            清理指定 IP 地址的資料庫連線
+          </CardDescription>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+            <Button 
+              onClick={cleanupCurrentIP} 
+              disabled={loading}
+              variant="destructive"
+              className="w-full"
+            >
+              {loading ? <Loader2 className="h-4 w-4 animate-spin" /> : <Trash2 className="h-4 w-4" />}
+              清理當前 IP 連線
+            </Button>
+            
+            <Button 
+              onClick={cleanupLocalConnections} 
+              disabled={loading}
+              variant="outline"
+              className="w-full"
+            >
+              {loading ? <Loader2 className="h-4 w-4 animate-spin" /> : <Database className="h-4 w-4" />}
+              清理本地追蹤連線
+            </Button>
+          </div>
+
+          {/* 指定 IP 清理 */}
+          <div className="space-y-2">
+            <Label htmlFor="targetIP">指定 IP 地址</Label>
+            <div className="flex gap-2">
+              <Input
+                id="targetIP"
+                value={targetIP}
+                onChange={(e) => setTargetIP(e.target.value)}
+                placeholder="例如: 192.168.1.100"
+                className="flex-1"
+              />
+              <Button 
+                onClick={fetchSpecificIPStatus} 
+                disabled={loading || !targetIP.trim()}
+                variant="outline"
+              >
+                <Eye className="h-4 w-4" />
+              </Button>
+              <Button 
+                onClick={cleanupSpecificIP} 
+                disabled={loading || !targetIP.trim()}
+                variant="destructive"
+              >
+                <Trash2 className="h-4 w-4" />
+              </Button>
+            </div>
+          </div>
+        </CardContent>
+      </Card>
+
+      {/* 連線詳情列表 */}
+      {connectionStatus && connectionStatus.connections.length > 0 && (
+        <Card>
+          <CardHeader>
+            <CardTitle>連線詳情列表</CardTitle>
+            <CardDescription>
+              IP {connectionStatus.ip} 的所有資料庫連線
+            </CardDescription>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-2 max-h-96 overflow-y-auto">
+              {connectionStatus.connections.map((conn, index) => (
+                <div key={conn.ID} className="flex items-center justify-between p-3 border rounded-lg">
+                  <div className="flex items-center gap-4">
+                    <Badge variant="outline">#{conn.ID}</Badge>
+                    <div>
+                      <p className="text-sm font-medium">
+                        用戶: {conn.USER} | 主機: {conn.HOST}
+                      </p>
+                      <p className="text-sm text-muted-foreground">
+                        資料庫: {conn.DB} | 命令: {conn.COMMAND}
+                      </p>
+                      <p className="text-sm text-muted-foreground">
+                        時間: {conn.TIME}s | 狀態: {conn.STATE}
+                      </p>
+                      {conn.INFO && (
+                        <p className="text-xs text-muted-foreground mt-1">
+                          查詢: {conn.INFO.length > 100 ? conn.INFO.substring(0, 100) + '...' : conn.INFO}
+                        </p>
+                      )}
+                    </div>
+                  </div>
+                </div>
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+      )}
+
+      {/* 訊息顯示 */}
+      {message && (
+        <Alert>
+          <Database className="h-4 w-4" />
+          <AlertDescription>{message}</AlertDescription>
+        </Alert>
+      )}
+
+      {error && (
+        <Alert variant="destructive">
+          <AlertTriangle className="h-4 w-4" />
+          <AlertDescription>{error}</AlertDescription>
+        </Alert>
+      )}
+
+      {/* 使用說明 */}
+      <Card>
+        <CardHeader>
+          <CardTitle>IP 連線管理說明</CardTitle>
+        </CardHeader>
+        <CardContent className="space-y-2 text-sm text-muted-foreground">
+          <p>• <strong>當前 IP 連線:</strong> 顯示和清理當前訪問者的所有資料庫連線</p>
+          <p>• <strong>指定 IP 連線:</strong> 輸入特定 IP 地址來查看和清理該 IP 的連線</p>
+          <p>• <strong>本地追蹤連線:</strong> 清理應用程式內部追蹤的連線記錄</p>
+          <p>• <strong>智能清理:</strong> 只清理指定 IP 的連線，不影響其他用戶</p>
+          <p>• <strong>關閉網站時:</strong> 系統會自動清理當前 IP 的所有連線</p>
+        </CardContent>
+      </Card>
+    </div>
+  );
+}