"use client";

import React, { useState, useEffect, Suspense } from 'react';
import { format, subDays } from 'date-fns';
import { DateRangePicker } from '@/app/components/ui/DateRangePicker';
import TimeSeriesChart from '@/app/components/charts/TimeSeriesChart';
import GeoAnalytics from '@/app/components/analytics/GeoAnalytics';
import DevicePieCharts from '@/app/components/charts/DevicePieCharts';
import UtmAnalytics from '@/app/components/analytics/UtmAnalytics';
import PathAnalytics from '@/app/components/analytics/PathAnalytics';
import { EventsSummary, TimeSeriesData, GeoData, DeviceAnalytics as DeviceAnalyticsType } from '@/app/api/types';
import { TeamSelector } from '@/app/components/ui/TeamSelector';
import { ProjectSelector } from '@/app/components/ui/ProjectSelector';
import { TagSelector } from '@/app/components/ui/TagSelector';
import { useSearchParams } from 'next/navigation';
import { useShortUrlStore } from '@/app/utils/store';

// 事件类型定义
interface Event {
  event_id?: string;
  url_id: string;
  url: string;
  event_type: string;
  visitor_id: string;
  created_at: string;
  event_time?: string;
  referrer?: string;
  browser?: string;
  os?: string;
  device_type?: string;
  country?: string;
  city?: string;
  event_attributes?: string;
  link_attributes?: string;
  user_attributes?: string;
  link_label?: string;
  link_original_url?: string;
  team_name?: string;
  project_name?: string;
  link_id?: string;
  link_slug?: string;
  link_tags?: string;
  ip_address?: string;
}

// 格式化日期函数
const formatDate = (dateString: string | undefined) => {
  if (!dateString) return '';
  try {
    return format(new Date(dateString), 'yyyy-MM-dd HH:mm:ss');
  } catch {
    return dateString;
  }
};

// 解析JSON字符串
const parseJsonSafely = (jsonString: string) => {
  if (!jsonString) return null;
  try {
    return JSON.parse(jsonString);
  } catch {
    return null;
  }
};

// 获取用户可读名称
const getUserDisplayName = (user: Record<string, unknown> | null) => {
  if (!user) return '-';
  if (typeof user.full_name === 'string') return user.full_name;
  if (typeof user.name === 'string') return user.name;
  if (typeof user.email === 'string') return user.email;
  return '-';
};

// 提取链接和事件的重要信息
const extractEventInfo = (event: Event) => {
  // 解析事件属性
  const eventAttrs = parseJsonSafely(event.event_attributes || '{}');
  
  // 解析链接属性
  const linkAttrs = parseJsonSafely(event.link_attributes || '{}');
  
  // 解析用户属性
  const userAttrs = parseJsonSafely(event.user_attributes || '{}');
  
  // 解析标签信息
  let tags: string[] = [];
  try {
    if (event.link_tags) {
      const parsedTags = JSON.parse(event.link_tags);
      if (Array.isArray(parsedTags)) {
        tags = parsedTags;
      }
    }
  } catch {
    // 解析失败则保持空数组
  }
  
  return {
    eventTime: event.created_at || event.event_time,
    linkName: event.link_label || linkAttrs?.name || eventAttrs?.link_name || event.link_slug || '-',
    originalUrl: event.link_original_url || eventAttrs?.origin_url || '-',
    fullUrl: eventAttrs?.full_url || '-',
    eventType: event.event_type || '-',
    visitorId: event.visitor_id?.substring(0, 8) || '-',
    referrer: eventAttrs?.referrer || '-',
    ipAddress: event.ip_address || '-',
    location: event.country ? (event.city ? `${event.city}, ${event.country}` : event.country) : '-',
    device: event.device_type || '-',
    browser: event.browser || '-',
    os: event.os || '-',
    userInfo: getUserDisplayName(userAttrs),
    teamName: event.team_name || '-',
    projectName: event.project_name || '-',
    tags: tags
  };
};

// Analytics Content Component that uses URL parameters
function AnalyticsContent() {
  // 从 URL 获取查询参数
  const searchParams = useSearchParams();
  const shorturlParam = searchParams.get('shorturl');
  
  // 使用 Zustand store
  const { selectedShortUrl, setSelectedShortUrl, clearSelectedShortUrl } = useShortUrlStore();
  
  // 存储 shorturl 参数
  const [selectedShortUrlString, setSelectedShortUrlString] = useState<string | null>(null);
  
  // Track hydration state of Zustand persistence
  const [isHydrated, setIsHydrated] = useState(false);
  
  // Flag to trigger data fetching
  const [shouldFetchData, setShouldFetchData] = useState(false);
  
  // Set hydrated state after initial render
  useEffect(() => {
    const hydrateTimeout = setTimeout(() => {
      setIsHydrated(true);
    }, 100); // Small timeout to ensure store is hydrated
    
    return () => clearTimeout(hydrateTimeout);
  }, []);
  
  // 从 API 加载短链接数据
  useEffect(() => {
    if (!isHydrated) return; // Skip if not hydrated yet
    
    // 处理 URL 参数
    if (shorturlParam) {
      // 保存参数到状态
      setSelectedShortUrlString(shorturlParam);
      
      // 如果 store 中没有选中的短链接或者 store 中的短链接与 URL 参数不匹配，则从 localStorage 更新
      if (!selectedShortUrl || selectedShortUrl.shortUrl !== shorturlParam) {
        // 首先检查 localStorage 是否已有此数据
        const localStorageData = localStorage.getItem('shorturl-storage');
        
        if (localStorageData) {
          try {
            const parsedData = JSON.parse(localStorageData);
            if (parsedData.state?.selectedShortUrl && parsedData.state.selectedShortUrl.shortUrl === shorturlParam) {
              // 数据已存在于 localStorage 且匹配 URL 参数，直接从 localStorage 中设置
              setSelectedShortUrl(parsedData.state.selectedShortUrl);
              // Trigger data fetching
              setShouldFetchData(true);
              return;
            }
          } catch (e) {
            console.error('Error parsing localStorage data:', e);
          }
        }
        
        // 如果 localStorage 中没有匹配的数据，则从 API 获取
        const fetchShortUrlData = async () => {
          try {
            let apiUrl = '';
            
            // Check if shorturlParam is a URL or an ID
            if (shorturlParam.startsWith('http')) {
              // Direct match by shortUrl is more reliable than URL parsing
              const exactApiUrl = `/api/shortlinks/exact?shortUrl=${encodeURIComponent(shorturlParam)}`;
              console.log('Fetching shorturl by exact match:', exactApiUrl);
              
              // Try the exact endpoint first
              const response = await fetch(exactApiUrl);
              
              if (response.ok) {
                const result = await response.json();
                
                if (result.success && result.data) {
                  console.log('Found shortlink by exact shortUrl match:', result.data);
                  console.log('External ID from exact API:', result.data.externalId);
                  
                  if (result.data.externalId) {
                    // Save to sessionStorage for immediate use
                    sessionStorage.setItem('current_shorturl_external_id', result.data.externalId);
                    console.log('Saved external ID to sessionStorage:', result.data.externalId);
                  }
                  
                  // Set in store and trigger data fetch
                  setSelectedShortUrl(result.data);
                  setTimeout(() => {
                    setShouldFetchData(true);
                  }, 100);
                  return;
                }
              }
              
              // Fallback to old method if exact match fails
              console.log('Exact match failed, trying byUrl endpoint');
              apiUrl = `/api/shortlinks/byUrl?url=${encodeURIComponent(shorturlParam)}`;
            } else {
              // It might be an ID or slug, try the ID endpoint directly
              apiUrl = `/api/shortlinks/${shorturlParam}`;
            }
            
            console.log('Fetching shorturl data from:', apiUrl);
            
            // 使用 API 端点获取短链接数据
            const response = await fetch(apiUrl);
            
            if (!response.ok) {
              console.error('Failed to fetch shorturl data:', response.statusText);
              // Still trigger data fetching to show all data instead
              setShouldFetchData(true);
              return;
            }
            
            const result = await response.json();
            
            // 如果找到匹配的短链接数据
            if (result.success && result.data) {
              console.log('Retrieved shortlink data:', result.data);
              // Log the external ID explicitly for debugging
              console.log('External ID from API:', result.data.externalId);
              
              // 设置到 Zustand store (会自动更新到 localStorage)
              setSelectedShortUrl(result.data);
              
              // 强制保证 externalId 被设置到 params
              const savedExternalId = result.data.externalId;
              if (savedExternalId) {
                // Save to sessionStorage for immediate use
                sessionStorage.setItem('current_shorturl_external_id', savedExternalId);
                console.log('Saved external ID to sessionStorage:', savedExternalId);
              }
              
              // Explicitly wait for the state update to be applied
              // before triggering the data fetching
              setTimeout(() => {
                setShouldFetchData(true);
              }, 100);
            } else {
              setShouldFetchData(true);
            }
          } catch (error) {
            console.error('Error fetching shorturl data:', error);
            // Trigger data fetching even if there was an error
            setShouldFetchData(true);
          }
        };
        
        fetchShortUrlData();
      } else {
        // If selectedShortUrl already matches URL parameter, trigger data fetching
        setShouldFetchData(true);
      }
    } else {
      // 如果 URL 没有参数，清除文本状态
      setSelectedShortUrlString(null);
      
      // 如果 URL 没有参数但 store 中有数据，我们保持 store 中的数据不变
      // 这样用户在清除 URL 参数后仍能看到之前选择的短链接数据
      
      // Trigger data fetching since no shorturl parameter in URL
      setShouldFetchData(true);
    }
  }, [shorturlParam, selectedShortUrl, setSelectedShortUrl, isHydrated]);
  
  // 默认日期范围为最近7天
  const today = new Date();
  const [dateRange, setDateRange] = useState({
    from: subDays(today, 7), // 7天前
    to: today // 今天
  });
  
  // 添加团队选择状态 - 使用数组支持多选
  const [selectedTeamIds, setSelectedTeamIds] = useState<string[]>([]);
  // 添加项目选择状态 - 使用数组支持多选
  const [selectedProjectIds, setSelectedProjectIds] = useState<string[]>([]);
  // 添加标签名称状态 - 用于在UI中显示和API请求
  const [selectedTagNames, setSelectedTagNames] = useState<string[]>([]);
  // 添加子路径筛选状态
  const [selectedSubpath, setSelectedSubpath] = useState<string>('');
  // 添加分页状态
  const [currentPage, setCurrentPage] = useState<number>(1);
  const [pageSize, setPageSize] = useState<number>(10);
  const [totalEvents, setTotalEvents] = useState<number>(0);
  
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);
  const [summary, setSummary] = useState<EventsSummary | null>(null);
  const [timeSeriesData, setTimeSeriesData] = useState<TimeSeriesData[]>([]);
  const [geoData, setGeoData] = useState<GeoData[]>([]);
  const [deviceData, setDeviceData] = useState<DeviceAnalyticsType | null>(null);
  const [events, setEvents] = useState<Event[]>([]);

  // 添加 Snackbar 状态
  const [isSnackbarOpen, setIsSnackbarOpen] = useState(false);

  useEffect(() => {
    if (!shouldFetchData) return; // Don't fetch data until explicitly triggered
    
    const fetchData = async () => {
      setLoading(true);
      setError(null);

      try {
        const startTime = format(dateRange.from, "yyyy-MM-dd'T'HH:mm:ss'Z'");
        const endTime = format(dateRange.to, "yyyy-MM-dd'T'HH:mm:ss'Z'");

        // 构建基础URL和查询参数
        const baseUrl = '/api/events';
        const params = new URLSearchParams({
          startTime,
          endTime,
          page: currentPage.toString(),
          pageSize: pageSize.toString()
        });
        
        // Verify the shortUrl data is loaded and the externalId exists
        // before adding the linkId parameter
        if (selectedShortUrl) {
          console.log('Current selectedShortUrl data:', selectedShortUrl);
          
          if (selectedShortUrl.externalId) {
            params.append('linkId', selectedShortUrl.externalId);
            console.log('Adding linkId (externalId) to requests:', selectedShortUrl.externalId);
          } else {
            // Try to get externalId from sessionStorage as backup
            const savedExternalId = sessionStorage.getItem('current_shorturl_external_id');
            if (savedExternalId) {
              params.append('linkId', savedExternalId);
              console.log('Adding linkId from sessionStorage:', savedExternalId);
            } else {
              // External ID is missing - this will result in no data being returned
              console.warn('WARNING: externalId is missing in the shortUrl data - no results will be returned!', selectedShortUrl);
            }
          }
          // We now know the events table exclusively uses external_id format, so never fall back to id
          
          // Add an extra log to debug the issue
          console.log('Complete shorturl data:', JSON.stringify({
            id: selectedShortUrl.id,
            externalId: selectedShortUrl.externalId,
            shortUrl: selectedShortUrl.shortUrl
          }));
        }
        
        // 添加团队ID参数 - 支持多个团队
        if (selectedTeamIds.length > 0) {
          selectedTeamIds.forEach(teamId => {
            params.append('teamId', teamId);
          });
        }
        
        // 添加项目ID参数 - 支持多个项目
        if (selectedProjectIds.length > 0) {
          selectedProjectIds.forEach(projectId => {
            params.append('projectId', projectId);
          });
        }
        
        // 添加标签名称参数 - 支持多个标签
        if (selectedTagNames.length > 0) {
          selectedTagNames.forEach(tagName => {
            params.append('tagName', tagName);
          });
        }
        
        // 添加子路径筛选参数
        if (selectedSubpath) {
          params.append('subpath', selectedSubpath);
        }

        // 记录构建的 URL，以确保参数正确包含
        const summaryUrl = `${baseUrl}/summary?${params.toString()}`;
        const timeSeriesUrl = `${baseUrl}/time-series?${params.toString()}`;
        const geoUrl = `${baseUrl}/geo?${params.toString()}`;
        const devicesUrl = `${baseUrl}/devices?${params.toString()}`;
        const eventsUrl = `${baseUrl}?${params.toString()}`;
        
        console.log('Final API URLs being called:');
        console.log('- Summary API:', summaryUrl);
        console.log('- TimeSeries API:', timeSeriesUrl);
        console.log(`- Params contain linkId? ${params.has('linkId')}`);
        console.log(`- All params: ${params.toString()}`);
        
        // 并行获取所有数据
        const [summaryRes, timeSeriesRes, geoRes, deviceRes, eventsRes] = await Promise.all([
          fetch(summaryUrl),
          fetch(timeSeriesUrl),
          fetch(geoUrl),
          fetch(devicesUrl),
          fetch(eventsUrl)
        ]);

        // 添加额外日志，记录完整的 URL 请求
        console.log('Summary API URL:', summaryUrl);
        
        if (selectedShortUrl?.externalId) {
          console.log('Verifying linkId is in params:', 
            `linkId=${selectedShortUrl.externalId}`, 
            `included: ${params.toString().includes(`linkId=${selectedShortUrl.externalId}`)}`
          );
        }

        const [summaryData, timeSeriesData, geoData, deviceData, eventsData] = await Promise.all([
          summaryRes.json(),
          timeSeriesRes.json(),
          geoRes.json(),
          deviceRes.json(),
          eventsRes.json()
        ]);

        if (!summaryRes.ok) throw new Error(summaryData.error || 'Failed to fetch summary data');
        if (!timeSeriesRes.ok) throw new Error(timeSeriesData.error || 'Failed to fetch time series data');
        if (!geoRes.ok) throw new Error(geoData.error || 'Failed to fetch geo data');
        if (!deviceRes.ok) throw new Error(deviceData.error || 'Failed to fetch device data');
        if (!eventsRes.ok) throw new Error(eventsData.error || 'Failed to fetch events data');

        setSummary(summaryData.data);
        setTimeSeriesData(timeSeriesData.data);
        setGeoData(geoData.data);
        setDeviceData(deviceData.data);
        setEvents(eventsData.data || []);
        
        // 设置总事件数量用于分页
        if (eventsData.meta) {
          // 确保将total转换为数字，无论它是字符串还是数字
          const totalCount = parseInt(String(eventsData.meta.total), 10);
          if (!isNaN(totalCount)) {
            setTotalEvents(totalCount);
          }
        }
      } catch (err) {
        setError(err instanceof Error ? err.message : 'An error occurred while fetching data');
      } finally {
        setLoading(false);
      }
    };

    fetchData();
  }, [dateRange, selectedTeamIds, selectedProjectIds, selectedTagNames, selectedSubpath, currentPage, pageSize, selectedShortUrl, shouldFetchData]);

  // Function to clear the shorturl filter
  const handleClearShortUrlFilter = () => {
    // 先清除 store 中的数据
    clearSelectedShortUrl();
    
    // 直接从 localStorage 中清除 Zustand 存储的数据
    localStorage.removeItem('shorturl-storage');
    
    // 清除 sessionStorage 中的数据
    sessionStorage.removeItem('current_shorturl_external_id');
    
    // 创建新 URL，移除 shorturl 参数
    const newUrl = new URL(window.location.href);
    newUrl.searchParams.delete('shorturl');
    
    // 直接强制跳转到新 URL，这会完全重新加载页面
    window.location.href = newUrl.toString();
  };

  // 清除子路径筛选
  const handleClearSubpathFilter = () => {
    setSelectedSubpath('');
  };
  
  // 处理子路径点击
  const handlePathClick = (path: string) => {
    console.log('====== ANALYTICS PAGE PATH DEBUG ======');
    console.log('Original path:', path);
    
    // 从路径中提取 subpath 部分，移除前导斜杠
    // 示例：如果路径是 "/slug/subpath"，我们需要提取 "subpath" 部分
    // 或者直接使用原始路径，取决于您的路径结构
    const pathParts = path.split('/').filter(Boolean);
    // 如果路径包含多个部分，获取第二部分（subpath）
    const subpath = pathParts.length > 1 ? pathParts[1] : path;
    
    console.log('Extracted subpath:', subpath);
    console.log('=====================================');
    
    setSelectedSubpath(subpath);
    // 重置到第一页
    setCurrentPage(1);
  };

  if (loading) {
    return (
      <div className="flex items-center justify-center min-h-screen">
        <div className="animate-spin rounded-full h-12 w-12 border-t-2 border-b-2 border-blue-500" />
      </div>
    );
  }

  if (error) {
    return (
      <div className="flex items-center justify-center min-h-screen">
        <div className="text-red-500">{error}</div>
      </div>
    );
  }

  return (
    <div className="container mx-auto px-4 py-8">
      {/* Notification Snackbar */}
      {isSnackbarOpen && (
        <div className="fixed bottom-4 right-4 bg-green-500 text-white px-4 py-2 rounded-md shadow-lg z-50 flex items-center">
          <span>URL filter cleared</span>
          <button 
            onClick={() => setIsSnackbarOpen(false)}
            className="ml-3 text-white hover:text-gray-200 p-1"
            aria-label="Close notification"
          >
            ×
          </button>
        </div>
      )}
      
      <div className="flex justify-between items-center mb-8">
        <h1 className="text-2xl font-bold text-gray-900">Analytics Dashboard</h1>
        <div className="flex flex-col gap-4 md:flex-row md:items-center">
          {/* 如果有选定的 shorturl，可以显示一个提示，显示更多详细信息 */}
          {selectedShortUrl && (
            <div className="bg-blue-100 text-blue-800 px-3 py-2 rounded-md text-sm flex flex-col">
              <div className="flex items-center justify-between">
                <div className="flex items-center">
                  <span className="font-medium">{selectedShortUrl.title || 'Untitled'}</span>
                  <span className="mx-2">-</span>
                  <span>{selectedShortUrl.shortUrl}</span>
                </div>
                <button 
                  onClick={handleClearShortUrlFilter}
                  className="ml-3 text-blue-700 hover:text-blue-900 p-1 rounded-full hover:bg-blue-200"
                  aria-label="Clear shorturl filter"
                >
                  ×
                </button>
              </div>
              <div className="text-xs mt-1 text-blue-700">
                <span>Analytics filtered for this short URL only</span>
                {selectedShortUrl.id && <span className="ml-2 text-blue-500">(ID: {selectedShortUrl.id.substring(0, 8)}...)</span>}
                {selectedShortUrl.externalId && <span className="ml-2 text-blue-500">(External ID: {selectedShortUrl.externalId})</span>}
              </div>
              {selectedShortUrl.tags && selectedShortUrl.tags.length > 0 && (
                <div className="flex flex-wrap gap-1 mt-1">
                  {selectedShortUrl.tags.map((tag, index) => (
                    <span key={index} className="bg-blue-50 text-blue-700 text-xs px-1.5 py-0.5 rounded">
                      {tag}
                    </span>
                  ))}
                </div>
              )}
            </div>
          )}
          
          {/* 如果只有 URL 参数但没有完整数据，则显示简单提示 */}
          {selectedShortUrlString && !selectedShortUrl && (
            <div className="bg-blue-100 text-blue-800 px-3 py-1 rounded-md text-sm flex items-center justify-between">
              <div>
                <span>Filtered by Short URL:</span>
                <span className="ml-2 font-medium">{selectedShortUrlString}</span>
              </div>
              <button 
                onClick={handleClearShortUrlFilter}
                className="ml-3 text-blue-700 hover:text-blue-900 p-1 rounded-full hover:bg-blue-200"
                aria-label="Clear shorturl filter"
              >
                ×
              </button>
            </div>
          )}

          {/* 如果有选定的 subpath，显示提示 */}
          {selectedSubpath && (
            <div className="bg-blue-100 text-blue-800 px-3 py-2 rounded-md text-sm flex items-center justify-between">
              <div>
                <span>Filtered by Channel:</span>
                <span className="ml-2 font-medium">{selectedSubpath}</span>
              </div>
              <button 
                onClick={handleClearSubpathFilter}
                className="ml-3 text-blue-700 hover:text-blue-900 p-1 rounded-full hover:bg-blue-200"
                aria-label="Clear subpath filter"
              >
                ×
              </button>
            </div>
          )}

          {/* 只在没有选中 shorturl 时显示筛选选择器 */}
          {!selectedShortUrl && (
            <>
              <TeamSelector
                value={selectedTeamIds}
                onChange={(value) => {
                  const newTeamIds = Array.isArray(value) ? value : [value];
                  
                  // Check if team selection has changed
                  if (JSON.stringify(newTeamIds) !== JSON.stringify(selectedTeamIds)) {
                    // Clear project selection when team changes
                    setSelectedProjectIds([]);
                    
                    // Update team selection
                    setSelectedTeamIds(newTeamIds);
                  }
                }}
                className="w-[250px]"
                multiple={true}
              />
              <ProjectSelector
                value={selectedProjectIds}
                onChange={(value) => setSelectedProjectIds(Array.isArray(value) ? value : [value])}
                className="w-[250px]"
                multiple={true}
                teamIds={selectedTeamIds.length > 0 ? selectedTeamIds : undefined}
              />
              <TagSelector
                value={selectedTagNames}
                onChange={(value) => {
                  // TagSelector返回的是标签名称
                  if (Array.isArray(value)) {
                    setSelectedTagNames(value);
                  } else {
                    setSelectedTagNames(value ? [value] : []);
                  }
                }}
                className="w-[250px]"
                multiple={true}
                teamIds={selectedTeamIds.length > 0 ? selectedTeamIds : undefined}
              />
            </>
          )}
          
          <DateRangePicker
            value={dateRange}
            onChange={setDateRange}
          />
        </div>
      </div>

      {/* 仪表板内容 */}
      {summary && (
        <div className="grid grid-cols-1 md:grid-cols-4 gap-6 mb-8">
          <div className="bg-white rounded-lg shadow p-6">
            <h3 className="text-sm font-medium text-gray-500">Total Events</h3>
            <p className="text-2xl font-semibold text-gray-900">
              {typeof summary.totalEvents === 'number' ? summary.totalEvents.toLocaleString() : summary.totalEvents}
            </p>
          </div>
          <div className="bg-white rounded-lg shadow p-6">
            <h3 className="text-sm font-medium text-gray-500">Unique Visitors</h3>
            <p className="text-2xl font-semibold text-gray-900">
              {typeof summary.uniqueVisitors === 'number' ? summary.uniqueVisitors.toLocaleString() : summary.uniqueVisitors}
            </p>
          </div>
          <div className="bg-white rounded-lg shadow p-6">
            <h3 className="text-sm font-medium text-gray-500">Total Conversions</h3>
            <p className="text-2xl font-semibold text-gray-900">
              {typeof summary.totalConversions === 'number' ? summary.totalConversions.toLocaleString() : summary.totalConversions}
            </p>
          </div>
          <div className="bg-white rounded-lg shadow p-6">
            <h3 className="text-sm font-medium text-gray-500">Avg. Time Spent</h3>
            <p className="text-2xl font-semibold text-gray-900">
              {summary.averageTimeSpent?.toFixed(1) || '0'}s
            </p>
          </div>
        </div>
      )}

      {/* 时间序列图表 */}
      {timeSeriesData && timeSeriesData.length > 0 && (
        <div className="bg-white rounded-lg shadow p-6 mb-8">
          <h2 className="text-lg font-semibold text-gray-900 mb-6">Traffic Over Time</h2>
          <div className="h-80">
            <TimeSeriesChart data={timeSeriesData} />
          </div>
        </div>
      )}

      {/* 设备分析图表 */}
      {deviceData && (
        <div className="bg-white rounded-lg shadow p-6 mb-8">
          <h2 className="text-lg font-semibold text-gray-900 mb-6">Device Analytics</h2>
          <DevicePieCharts data={deviceData} />
        </div>
      )}

      {/* 地理分析 */}
      {geoData && geoData.length > 0 && (
        <div className="bg-white rounded-lg shadow p-6 mb-8">
          <h2 className="text-lg font-semibold text-gray-900 mb-6">Geographic Distribution</h2>
          <GeoAnalytics data={geoData} />
        </div>
      )}

      {/* UTM 参数分析 */}
      <div className="bg-white rounded-lg shadow p-6 mb-8">
        <h2 className="text-lg font-semibold text-gray-900 mb-6">UTM Parameters Analysis</h2>
        <UtmAnalytics 
          startTime={format(dateRange.from, "yyyy-MM-dd'T'HH:mm:ss'Z'")}
          endTime={format(dateRange.to, "yyyy-MM-dd'T'HH:mm:ss'Z'")}
          teamIds={selectedTeamIds}
          projectIds={selectedProjectIds}
          tagIds={selectedTagNames}
          linkId={selectedShortUrl?.externalId}
          subpath={selectedSubpath}
        />
      </div>

      {/* Path Analysis - 仅在选中特定链接时显示 */}
      {selectedShortUrl && selectedShortUrl.externalId && (
        <div className="bg-white rounded-lg shadow p-6 mb-8">
          <h2 className="text-lg font-semibold text-gray-900 mb-6">Path Analysis</h2>
          <PathAnalytics 
            startTime={format(dateRange.from, "yyyy-MM-dd'T'HH:mm:ss'Z'")}
            endTime={format(dateRange.to, "yyyy-MM-dd'T'HH:mm:ss'Z'")}
            linkId={selectedShortUrl.externalId}
            onPathClick={handlePathClick}
          />
        </div>
      )}

      {/* Recent Events Table */}
      <div className="bg-white rounded-lg shadow overflow-hidden mb-8">
        <div className="p-6 border-b border-gray-200">
          <h2 className="text-lg font-semibold text-gray-900 mb-4">Recent Events</h2>
        </div>

        <div className="overflow-x-auto">
          <table className="min-w-full divide-y divide-gray-200">
            <thead className="bg-gray-50">
              <tr>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Time
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Link Name
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Original URL
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Full URL
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Event Type
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Tags
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  User
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Team/Project
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  IP/Location
                </th>
                <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  Device Info
                </th>
              </tr>
            </thead>
            <tbody className="bg-white divide-y divide-gray-200">
              {events.map((event, index) => {
                const info = extractEventInfo(event);
                return (
                  <tr key={event.event_id || index} className={index % 2 === 0 ? 'bg-white' : 'bg-gray-50'}>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                      {formatDate(info.eventTime)}
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
                      <span className="font-medium">{info.linkName}</span>
                      <div className="text-xs text-gray-500 mt-1 truncate max-w-xs">
                        ID: {event.link_id || '-'}
                      </div>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-blue-600">
                      <a href={info.originalUrl} className="hover:underline truncate max-w-xs block" target="_blank" rel="noopener noreferrer">
                        {info.originalUrl}
                      </a>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-blue-600">
                      <a href={info.fullUrl} className="hover:underline truncate max-w-xs block" target="_blank" rel="noopener noreferrer">
                        {info.fullUrl}
                      </a>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm">
                      <span className={`px-2 inline-flex text-xs leading-5 font-semibold rounded-full ${
                        info.eventType === 'click' 
                          ? 'bg-green-100 text-green-800' 
                          : 'bg-blue-100 text-blue-800'
                      }`}>
                        {info.eventType}
                      </span>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                      <div className="flex flex-wrap gap-1">
                        {info.tags && info.tags.length > 0 ? (
                          info.tags.map((tag, idx) => (
                            <span 
                              key={idx} 
                              className="bg-gray-100 text-gray-800 text-xs px-2 py-0.5 rounded"
                            >
                              {tag}
                            </span>
                          ))
                        ) : (
                          <span className="text-gray-400">-</span>
                        )}
                      </div>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                      <div className="font-medium">{info.userInfo}</div>
                      <div className="text-xs text-gray-400 mt-1">{info.visitorId}...</div>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                      <div className="font-medium">{info.teamName}</div>
                      <div className="text-xs text-gray-400 mt-1">{info.projectName}</div>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                      <div className="flex flex-col">
                        <span className="text-xs inline-flex items-center mb-1">
                          <span className="font-medium">IP:</span> 
                          <span className="ml-1">{info.ipAddress}</span>
                        </span>
                        <span className="text-xs inline-flex items-center">
                          <span className="font-medium">Location:</span> 
                          <span className="ml-1">{info.location}</span>
                        </span>
                      </div>
                    </td>
                    <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                      <div className="flex flex-col">
                        <span className="text-xs inline-flex items-center mb-1">
                          <span className="font-medium">Device:</span> 
                          <span className="ml-1">{info.device}</span>
                        </span>
                        <span className="text-xs inline-flex items-center mb-1">
                          <span className="font-medium">Browser:</span> 
                          <span className="ml-1">{info.browser}</span>
                        </span>
                        <span className="text-xs inline-flex items-center">
                          <span className="font-medium">OS:</span> 
                          <span className="ml-1">{info.os}</span>
                        </span>
                      </div>
                    </td>
                  </tr>
                );
              })}
            </tbody>
          </table>
        </div>

        {/* 表格为空状态 */}
        {!loading && events.length === 0 && (
          <div className="flex justify-center items-center p-8 text-gray-500">
            No events found
          </div>
        )}
        
        {/* 分页控件 */}
        {!loading && events.length > 0 && (
          <div className="px-6 py-4 flex items-center justify-between border-t border-gray-200">
            <div className="flex-1 flex justify-between sm:hidden">
              <button
                onClick={() => setCurrentPage(prev => Math.max(prev - 1, 1))}
                disabled={currentPage === 1}
                className={`relative inline-flex items-center px-4 py-2 border border-gray-300 text-sm font-medium rounded-md ${
                  currentPage === 1 
                    ? 'text-gray-300 bg-gray-50' 
                    : 'text-gray-700 bg-white hover:bg-gray-50'
                }`}
              >
                Previous
              </button>
              <button
                onClick={() => setCurrentPage(prev => (currentPage < Math.ceil(totalEvents / pageSize)) ? prev + 1 : prev)}
                disabled={currentPage >= Math.ceil(totalEvents / pageSize) || events.length < pageSize}
                className={`ml-3 relative inline-flex items-center px-4 py-2 border border-gray-300 text-sm font-medium rounded-md ${
                  currentPage >= Math.ceil(totalEvents / pageSize) || events.length < pageSize
                    ? 'text-gray-300 cursor-not-allowed' 
                    : 'text-gray-700 bg-white hover:bg-gray-50'
                }`}
              >
                Next
              </button>
            </div>
            <div className="hidden sm:flex-1 sm:flex sm:items-center sm:justify-between">
              <div>
                <p className="text-sm text-gray-700">
                  Showing <span className="font-medium">{events.length > 0 ? ((currentPage - 1) * pageSize) + 1 : 0}</span> to <span className="font-medium">{events.length > 0 ? ((currentPage - 1) * pageSize) + events.length : 0}</span> of{' '}
                  <span className="font-medium">{totalEvents}</span> results
                </p>
              </div>
              <div className="flex items-center">
                <div className="mr-4">
                  <select
                    className="px-3 py-1 border border-gray-300 rounded-md text-sm"
                    value={pageSize}
                    onChange={(e) => {
                      setPageSize(Number(e.target.value));
                      setCurrentPage(1); // 重置到第一页
                    }}
                  >
                    <option value="5">5 / page</option>
                    <option value="10">10 / page</option>
                    <option value="20">20 / page</option>
                    <option value="50">50 / page</option>
                  </select>
                </div>
                
                {/* 添加直接跳转到指定页的输入框 */}
                <div className="mr-4 flex items-center">
                  <span className="text-sm text-gray-700 mr-2">Go to:</span>
                  <input
                    type="number"
                    min="1"
                    max={Math.max(1, Math.ceil(totalEvents / pageSize))}
                    value={currentPage}
                    onChange={(e) => {
                      const page = parseInt(e.target.value);
                      if (!isNaN(page) && page >= 1 && page <= Math.ceil(totalEvents / pageSize)) {
                        setCurrentPage(page);
                      }
                    }}
                    onKeyDown={(e) => {
                      if (e.key === 'Enter') {
                        const input = e.target as HTMLInputElement;
                        const page = parseInt(input.value);
                        if (!isNaN(page) && page >= 1 && page <= Math.ceil(totalEvents / pageSize)) {
                          setCurrentPage(page);
                        }
                      }
                    }}
                    className="w-16 px-3 py-1 border border-gray-300 rounded-md text-sm"
                  />
                  <span className="text-sm text-gray-700 ml-2">
                    of {Math.max(1, Math.ceil(totalEvents / pageSize))}
                  </span>
                </div>
              </div>
            </div>
          </div>
        )}
      </div>
    </div>
  );
}

// Main page component with Suspense
export default function AnalyticsPage() {
  return (
    <Suspense fallback={
      <div className="flex items-center justify-center min-h-screen">
        <div className="animate-spin rounded-full h-12 w-12 border-t-2 border-b-2 border-blue-500" />
      </div>
    }>
      <AnalyticsContent />
    </Suspense>
  );
} 