import { useState, useEffect } from 'react';
import { useRouter } from 'next/router';
import Head from 'next/head';
import DashboardLayout from '../../components/Layout/DashboardLayout';
import { toast } from 'react-hot-toast';
import {
  PhoneIcon,
  MagnifyingGlassIcon,
  PlayIcon,
  StopIcon,
  PauseIcon,
  DocumentTextIcon,
  CalendarIcon,
  ClockIcon,
  UserIcon,
  LanguageIcon,
  SpeakerWaveIcon,
  ArrowDownTrayIcon,
  FunnelIcon,
  EyeIcon,
  CheckCircleIcon,
  XCircleIcon,
  ExclamationTriangleIcon
} from '@heroicons/react/24/outline';
import { getDemoData } from '../../lib/demo-data';
import { formatTime } from '../../lib/utils';

interface CallRecord {
  id: string;
  user_name: string;
  interpreter_name: string;
  language_pair: string;
  start_time: string;
  end_time: string;
  duration: number;
  status: 'active' | 'completed' | 'failed' | 'cancelled';
  call_type: 'audio' | 'video';
  recording_url?: string;
  cost: number;
  notes?: string;
}

interface CallFilters {
  search: string;
  status: string;
  language: string;
  date_range: string;
  call_type: string;
}

export default function CallRecords() {
  const router = useRouter();
  const [calls, setCalls] = useState<CallRecord[]>([]);
  const [loading, setLoading] = useState(true);
  const [selectedCalls, setSelectedCalls] = useState<string[]>([]);
  const [currentPage, setCurrentPage] = useState(1);
  const [totalPages, setTotalPages] = useState(1);
  const [totalCount, setTotalCount] = useState(0);
  const [filters, setFilters] = useState<CallFilters>({
    search: '',
    status: '',
    language: '',
    date_range: '',
    call_type: ''
  });

  const pageSize = 10;

  useEffect(() => {
    fetchCalls();
  }, [currentPage, filters]);

  const fetchCalls = async () => {
    try {
      setLoading(true);
      
      // 模拟加载延迟
      await new Promise(resolve => setTimeout(resolve, 800));
      
      // 使用演示数据
      const mockCalls: CallRecord[] = [
        {
          id: '1',
          user_name: '张三',
          interpreter_name: '王五',
          language_pair: '中文-英文',
          start_time: '2024-01-20T14:30:00Z',
          end_time: '2024-01-20T15:15:00Z',
          duration: 2700, // 45分钟
          status: 'completed',
          call_type: 'video',
          recording_url: 'https://example.com/recording1.mp4',
          cost: 180,
          notes: '商务会议翻译，客户满意度高'
        },
        {
          id: '2',
          user_name: '李四',
          interpreter_name: '赵六',
          language_pair: '中文-日文',
          start_time: '2024-01-20T10:00:00Z',
          end_time: '2024-01-20T10:30:00Z',
          duration: 1800, // 30分钟
          status: 'completed',
          call_type: 'audio',
          recording_url: 'https://example.com/recording2.mp3',
          cost: 120,
          notes: '技术文档翻译'
        },
        {
          id: '3',
          user_name: '王二',
          interpreter_name: '孙七',
          language_pair: '中文-韩文',
          start_time: '2024-01-20T16:00:00Z',
          end_time: '',
          duration: 0,
          status: 'active',
          call_type: 'video',
          cost: 0,
          notes: '正在进行中的通话'
        },
        {
          id: '4',
          user_name: '陈五',
          interpreter_name: '周八',
          language_pair: '中文-法文',
          start_time: '2024-01-19T09:30:00Z',
          end_time: '2024-01-19T09:35:00Z',
          duration: 300, // 5分钟
          status: 'failed',
          call_type: 'audio',
          cost: 0,
          notes: '连接失败，技术问题'
        },
        {
          id: '5',
          user_name: '刘六',
          interpreter_name: '吴九',
          language_pair: '中文-德文',
          start_time: '2024-01-19T14:00:00Z',
          end_time: '2024-01-19T14:05:00Z',
          duration: 300, // 5分钟
          status: 'cancelled',
          call_type: 'video',
          cost: 0,
          notes: '用户取消通话'
        },
        {
          id: '6',
          user_name: '黄七',
          interpreter_name: '郑十',
          language_pair: '中文-西班牙文',
          start_time: '2024-01-18T11:00:00Z',
          end_time: '2024-01-18T12:30:00Z',
          duration: 5400, // 90分钟
          status: 'completed',
          call_type: 'video',
          recording_url: 'https://example.com/recording3.mp4',
          cost: 360,
          notes: '法律合同翻译，专业性强'
        }
      ];

      // 应用过滤器
      let filteredCalls = mockCalls;
      
      if (filters.search) {
        filteredCalls = filteredCalls.filter(call => 
          call.user_name.toLowerCase().includes(filters.search.toLowerCase()) ||
          call.interpreter_name.toLowerCase().includes(filters.search.toLowerCase()) ||
          call.language_pair.toLowerCase().includes(filters.search.toLowerCase())
        );
      }
      
      if (filters.status) {
        filteredCalls = filteredCalls.filter(call => call.status === filters.status);
      }
      
      if (filters.language) {
        filteredCalls = filteredCalls.filter(call => 
          call.language_pair.toLowerCase().includes(filters.language.toLowerCase())
        );
      }
      
      if (filters.call_type) {
        filteredCalls = filteredCalls.filter(call => call.call_type === filters.call_type);
      }

      // 分页
      const startIndex = (currentPage - 1) * pageSize;
      const endIndex = startIndex + pageSize;
      const paginatedCalls = filteredCalls.slice(startIndex, endIndex);
      
      setCalls(paginatedCalls);
      setTotalCount(filteredCalls.length);
      setTotalPages(Math.ceil(filteredCalls.length / pageSize));
      
    } catch (error) {
      console.error('Failed to fetch calls:', error);
      toast.error('加载通话记录失败');
    } finally {
      setLoading(false);
    }
  };

  const handleSearch = (value: string) => {
    setFilters(prev => ({ ...prev, search: value }));
    setCurrentPage(1);
  };

  const handleFilterChange = (key: keyof CallFilters, value: string) => {
    setFilters(prev => ({ ...prev, [key]: value }));
    setCurrentPage(1);
  };

  const handleSelectCall = (callId: string) => {
    setSelectedCalls(prev => 
      prev.includes(callId) 
        ? prev.filter(id => id !== callId)
        : [...prev, callId]
    );
  };

  const handleSelectAll = () => {
    if (selectedCalls.length === calls.length) {
      setSelectedCalls([]);
    } else {
      setSelectedCalls(calls.map(call => call.id));
    }
  };

  const handleExport = async () => {
    try {
      toast.loading('正在导出通话记录...', { id: 'export' });
      
      // 模拟导出延迟
      await new Promise(resolve => setTimeout(resolve, 2000));
      
      toast.success('通话记录导出成功', { id: 'export' });
    } catch (error) {
      toast.error('导出失败', { id: 'export' });
    }
  };

  const handlePlayRecording = (recordingUrl: string) => {
    if (recordingUrl) {
      toast.success('开始播放录音');
      // 这里可以集成音频播放器
    } else {
      toast.error('录音文件不存在');
    }
  };

  const getStatusColor = (status: string) => {
    switch (status) {
      case 'completed':
        return 'text-green-800 bg-green-100';
      case 'active':
        return 'text-blue-800 bg-blue-100';
      case 'failed':
        return 'text-red-800 bg-red-100';
      case 'cancelled':
        return 'text-gray-800 bg-gray-100';
      default:
        return 'text-gray-800 bg-gray-100';
    }
  };

  const getStatusText = (status: string) => {
    switch (status) {
      case 'completed':
        return '已完成';
      case 'active':
        return '进行中';
      case 'failed':
        return '失败';
      case 'cancelled':
        return '已取消';
      default:
        return status;
    }
  };

  const getStatusIcon = (status: string) => {
    switch (status) {
      case 'completed':
        return <CheckCircleIcon className="h-4 w-4 text-green-500" />;
      case 'active':
        return <PlayIcon className="h-4 w-4 text-blue-500" />;
      case 'failed':
        return <XCircleIcon className="h-4 w-4 text-red-500" />;
      case 'cancelled':
        return <StopIcon className="h-4 w-4 text-gray-500" />;
      default:
        return <ClockIcon className="h-4 w-4 text-gray-500" />;
    }
  };

  const formatDuration = (seconds: number) => {
    if (seconds === 0) return '-';
    
    const hours = Math.floor(seconds / 3600);
    const minutes = Math.floor((seconds % 3600) / 60);
    const remainingSeconds = seconds % 60;
    
    if (hours > 0) {
      return `${hours}:${minutes.toString().padStart(2, '0')}:${remainingSeconds.toString().padStart(2, '0')}`;
    } else {
      return `${minutes}:${remainingSeconds.toString().padStart(2, '0')}`;
    }
  };

  return (
    <>
      <Head>
        <title>通话记录 - 翻译服务管理系统</title>
      </Head>
      
      <DashboardLayout title="通话记录">
        <div className="space-y-6">
          {/* 页面标题和操作 */}
          <div className="sm:flex sm:items-center sm:justify-between">
            <div>
              <h1 className="text-2xl font-bold text-gray-900">通话记录</h1>
              <p className="mt-2 text-sm text-gray-700">
                查看和管理所有的翻译通话记录，包括录音文件和通话详情。
              </p>
            </div>
            <div className="mt-4 sm:mt-0 sm:flex sm:space-x-3">
              <button
                onClick={handleExport}
                className="inline-flex items-center px-4 py-2 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 bg-white hover:bg-gray-50"
              >
                <ArrowDownTrayIcon className="h-4 w-4 mr-2" />
                导出记录
              </button>
            </div>
          </div>

          {/* 搜索和过滤器 */}
          <div className="bg-white shadow rounded-lg p-6">
            <div className="grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-5">
              <div>
                <label htmlFor="search" className="block text-sm font-medium text-gray-700 mb-1">
                  搜索
                </label>
                <div className="relative">
                  <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                    <MagnifyingGlassIcon className="h-5 w-5 text-gray-400" />
                  </div>
                  <input
                    type="text"
                    id="search"
                    className="block w-full pl-10 pr-3 py-2 border border-gray-300 rounded-md leading-5 bg-white placeholder-gray-500 focus:outline-none focus:placeholder-gray-400 focus:ring-1 focus:ring-blue-500 focus:border-blue-500"
                    placeholder="搜索用户、翻译员..."
                    value={filters.search}
                    onChange={(e) => handleSearch(e.target.value)}
                  />
                </div>
              </div>

              <div>
                <label htmlFor="status" className="block text-sm font-medium text-gray-700 mb-1">
                  状态
                </label>
                <select
                  id="status"
                  className="block w-full py-2 px-3 border border-gray-300 bg-white rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                  value={filters.status}
                  onChange={(e) => handleFilterChange('status', e.target.value)}
                >
                  <option value="">全部状态</option>
                  <option value="active">进行中</option>
                  <option value="completed">已完成</option>
                  <option value="failed">失败</option>
                  <option value="cancelled">已取消</option>
                </select>
              </div>

              <div>
                <label htmlFor="language" className="block text-sm font-medium text-gray-700 mb-1">
                  语言对
                </label>
                <input
                  type="text"
                  id="language"
                  className="block w-full py-2 px-3 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                  placeholder="过滤语言对..."
                  value={filters.language}
                  onChange={(e) => handleFilterChange('language', e.target.value)}
                />
              </div>

              <div>
                <label htmlFor="call_type" className="block text-sm font-medium text-gray-700 mb-1">
                  通话类型
                </label>
                <select
                  id="call_type"
                  className="block w-full py-2 px-3 border border-gray-300 bg-white rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                  value={filters.call_type}
                  onChange={(e) => handleFilterChange('call_type', e.target.value)}
                >
                  <option value="">全部类型</option>
                  <option value="audio">音频通话</option>
                  <option value="video">视频通话</option>
                </select>
              </div>

              <div>
                <label htmlFor="date_range" className="block text-sm font-medium text-gray-700 mb-1">
                  时间范围
                </label>
                <select
                  id="date_range"
                  className="block w-full py-2 px-3 border border-gray-300 bg-white rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                  value={filters.date_range}
                  onChange={(e) => handleFilterChange('date_range', e.target.value)}
                >
                  <option value="">全部时间</option>
                  <option value="today">今天</option>
                  <option value="yesterday">昨天</option>
                  <option value="week">本周</option>
                  <option value="month">本月</option>
                </select>
              </div>
            </div>
          </div>

          {/* 通话记录列表 */}
          <div className="bg-white shadow rounded-lg overflow-hidden">
            {loading ? (
              <div className="flex items-center justify-center h-64">
                <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600"></div>
              </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="relative px-6 py-3">
                          <input
                            type="checkbox"
                            className="absolute left-4 top-1/2 -mt-2 h-4 w-4 rounded border-gray-300 text-blue-600 focus:ring-blue-500"
                            checked={selectedCalls.length === calls.length && calls.length > 0}
                            onChange={handleSelectAll}
                          />
                        </th>
                        <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                          通话信息
                        </th>
                        <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                          参与者
                        </th>
                        <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                          语言对
                        </th>
                        <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                          时长/费用
                        </th>
                        <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                          状态
                        </th>
                        <th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                          录音
                        </th>
                        <th scope="col" className="relative px-6 py-3">
                          <span className="sr-only">操作</span>
                        </th>
                      </tr>
                    </thead>
                    <tbody className="bg-white divide-y divide-gray-200">
                      {calls.map((call) => (
                        <tr key={call.id} className="hover:bg-gray-50">
                          <td className="relative px-6 py-4">
                            <input
                              type="checkbox"
                              className="absolute left-4 top-1/2 -mt-2 h-4 w-4 rounded border-gray-300 text-blue-600 focus:ring-blue-500"
                              checked={selectedCalls.includes(call.id)}
                              onChange={() => handleSelectCall(call.id)}
                            />
                          </td>
                          <td className="px-6 py-4 whitespace-nowrap">
                            <div className="flex items-center">
                              <div className="flex-shrink-0 h-10 w-10">
                                <div className={`h-10 w-10 rounded-full flex items-center justify-center ${
                                  call.call_type === 'video' ? 'bg-blue-100' : 'bg-green-100'
                                }`}>
                                  <PhoneIcon className={`h-6 w-6 ${
                                    call.call_type === 'video' ? 'text-blue-600' : 'text-green-600'
                                  }`} />
                                </div>
                              </div>
                              <div className="ml-4">
                                <div className="text-sm font-medium text-gray-900">
                                  {call.call_type === 'video' ? '视频通话' : '音频通话'}
                                </div>
                                <div className="text-sm text-gray-500 flex items-center">
                                  <CalendarIcon className="h-4 w-4 mr-1" />
                                  {formatTime(call.start_time)}
                                </div>
                              </div>
                            </div>
                          </td>
                          <td className="px-6 py-4 whitespace-nowrap">
                            <div className="space-y-1">
                              <div className="flex items-center text-sm text-gray-900">
                                <UserIcon className="h-4 w-4 mr-1 text-gray-400" />
                                {call.user_name}
                              </div>
                              <div className="flex items-center text-sm text-gray-500">
                                <LanguageIcon className="h-4 w-4 mr-1 text-gray-400" />
                                {call.interpreter_name}
                              </div>
                            </div>
                          </td>
                          <td className="px-6 py-4 whitespace-nowrap">
                            <div className="text-sm text-gray-900">{call.language_pair}</div>
                          </td>
                          <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                            <div className="flex items-center">
                              <ClockIcon className="h-4 w-4 mr-1" />
                              {formatDuration(call.duration)}
                            </div>
                            <div className="text-sm font-medium text-gray-900">
                              ¥{call.cost}
                            </div>
                          </td>
                          <td className="px-6 py-4 whitespace-nowrap">
                            <div className="flex items-center">
                              {getStatusIcon(call.status)}
                              <span className={`ml-2 inline-flex px-2 py-1 text-xs font-semibold rounded-full ${getStatusColor(call.status)}`}>
                                {getStatusText(call.status)}
                              </span>
                            </div>
                          </td>
                          <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                            {call.recording_url ? (
                              <button
                                onClick={() => handlePlayRecording(call.recording_url!)}
                                className="flex items-center text-blue-600 hover:text-blue-900"
                              >
                                <SpeakerWaveIcon className="h-4 w-4 mr-1" />
                                播放
                              </button>
                            ) : (
                              <span className="text-gray-400">无录音</span>
                            )}
                          </td>
                          <td className="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
                            <button
                              onClick={() => router.push(`/dashboard/calls/${call.id}`)}
                              className="text-blue-600 hover:text-blue-900"
                            >
                              <EyeIcon className="h-4 w-4" />
                            </button>
                          </td>
                        </tr>
                      ))}
                    </tbody>
                  </table>
                </div>

                {/* 分页 */}
                {totalPages > 1 && (
                  <div className="bg-white px-4 py-3 flex items-center justify-between border-t border-gray-200 sm:px-6">
                    <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 text-gray-700 bg-white hover:bg-gray-50 disabled:opacity-50 disabled:cursor-not-allowed"
                      >
                        上一页
                      </button>
                      <button
                        onClick={() => setCurrentPage(prev => Math.min(prev + 1, totalPages))}
                        disabled={currentPage === totalPages}
                        className="ml-3 relative inline-flex items-center px-4 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 disabled:opacity-50 disabled:cursor-not-allowed"
                      >
                        下一页
                      </button>
                    </div>
                    <div className="hidden sm:flex-1 sm:flex sm:items-center sm:justify-between">
                      <div>
                        <p className="text-sm text-gray-700">
                          显示第 <span className="font-medium">{(currentPage - 1) * pageSize + 1}</span> 到{' '}
                          <span className="font-medium">{Math.min(currentPage * pageSize, totalCount)}</span> 项，
                          共 <span className="font-medium">{totalCount}</span> 项
                        </p>
                      </div>
                      <div>
                        <nav className="relative z-0 inline-flex rounded-md shadow-sm -space-x-px">
                          <button
                            onClick={() => setCurrentPage(prev => Math.max(prev - 1, 1))}
                            disabled={currentPage === 1}
                            className="relative inline-flex items-center px-2 py-2 rounded-l-md border border-gray-300 bg-white text-sm font-medium text-gray-500 hover:bg-gray-50 disabled:opacity-50 disabled:cursor-not-allowed"
                          >
                            上一页
                          </button>
                          {Array.from({ length: totalPages }, (_, i) => i + 1).map((page) => (
                            <button
                              key={page}
                              onClick={() => setCurrentPage(page)}
                              className={`relative inline-flex items-center px-4 py-2 border text-sm font-medium ${
                                page === currentPage
                                  ? 'z-10 bg-blue-50 border-blue-500 text-blue-600'
                                  : 'bg-white border-gray-300 text-gray-500 hover:bg-gray-50'
                              }`}
                            >
                              {page}
                            </button>
                          ))}
                          <button
                            onClick={() => setCurrentPage(prev => Math.min(prev + 1, totalPages))}
                            disabled={currentPage === totalPages}
                            className="relative inline-flex items-center px-2 py-2 rounded-r-md border border-gray-300 bg-white text-sm font-medium text-gray-500 hover:bg-gray-50 disabled:opacity-50 disabled:cursor-not-allowed"
                          >
                            下一页
                          </button>
                        </nav>
                      </div>
                    </div>
                  </div>
                )}
              </>
            )}
          </div>
        </div>
      </DashboardLayout>
    </>
  );
}