'use client'

import { useState } from 'react'
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/Card'
import { Button } from '@/components/ui/Button'
import { SuccessTag, WarningTag, ErrorTag, PendingTag } from '@/components/ui/Tag'
import {
  Bell,
  CheckCircle,
  XCircle,
  AlertTriangle,
  FileText,
  Video,
  Users,
  Clock,
  Check,
  MoreVertical,
  PlusCircle
} from 'lucide-react'

// 消息类型
interface Message {
  id: string
  type: string
  title: string
  content: string
  time: string
  read: boolean
  icon: typeof Bell
  iconColor: string
  bgColor: string
  // 申诉次数请求专用字段
  appealRequest?: {
    creatorName: string
    taskName: string
    taskId: string
    status: 'pending' | 'approved' | 'rejected'
  }
}

// 模拟消息列表
const mockMessages: Message[] = [
  {
    id: 'msg-001',
    type: 'appeal_quota_request',
    title: '申诉次数申请',
    content: '达人「李小红」申请增加「618美妆推广视频」的申诉次数',
    time: '5分钟前',
    read: false,
    icon: PlusCircle,
    iconColor: 'text-accent-amber',
    bgColor: 'bg-accent-amber/20',
    appealRequest: {
      creatorName: '李小红',
      taskName: '618美妆推广视频',
      taskId: 'task-001',
      status: 'pending',
    },
  },
  {
    id: 'msg-002',
    type: 'task_submitted',
    title: '新脚本提交',
    content: '达人「小美护肤」提交了「夏日护肤推广脚本」，请及时审核。',
    time: '10分钟前',
    read: false,
    icon: FileText,
    iconColor: 'text-accent-indigo',
    bgColor: 'bg-accent-indigo/20',
  },
  {
    id: 'msg-003',
    type: 'appeal_quota_request',
    title: '申诉次数申请',
    content: '达人「美妆达人小王」申请增加「双11护肤品种草」的申诉次数',
    time: '30分钟前',
    read: false,
    icon: PlusCircle,
    iconColor: 'text-accent-amber',
    bgColor: 'bg-accent-amber/20',
    appealRequest: {
      creatorName: '美妆达人小王',
      taskName: '双11护肤品种草',
      taskId: 'task-002',
      status: 'pending',
    },
  },
  {
    id: 'msg-004',
    type: 'review_complete',
    title: '品牌终审通过',
    content: '「新品口红试色」视频已通过品牌方终审。',
    time: '1小时前',
    read: false,
    icon: CheckCircle,
    iconColor: 'text-accent-green',
    bgColor: 'bg-accent-green/20',
  },
  {
    id: 'msg-005',
    type: 'review_rejected',
    title: '品牌终审驳回',
    content: '「健身器材开箱」视频被品牌方驳回，原因：违禁词使用。',
    time: '2小时前',
    read: false,
    icon: XCircle,
    iconColor: 'text-accent-coral',
    bgColor: 'bg-accent-coral/20',
  },
  {
    id: 'msg-006',
    type: 'new_project',
    title: '新项目邀请',
    content: '您被邀请参与「XX品牌新品推广」项目，请配置 Brief。',
    time: '昨天',
    read: true,
    icon: Users,
    iconColor: 'text-purple-400',
    bgColor: 'bg-purple-500/20',
  },
  {
    id: 'msg-007',
    type: 'warning',
    title: '风险预警',
    content: '达人「美妆Lisa」连续2次提交被驳回，建议关注。',
    time: '昨天',
    read: true,
    icon: AlertTriangle,
    iconColor: 'text-orange-400',
    bgColor: 'bg-orange-500/20',
  },
  {
    id: 'msg-008',
    type: 'task_submitted',
    title: '新视频提交',
    content: '达人「健身教练王」提交了「健身器材使用教程」视频，请及时审核。',
    time: '2天前',
    read: true,
    icon: Video,
    iconColor: 'text-purple-400',
    bgColor: 'bg-purple-500/20',
  },
]

export default function AgencyMessagesPage() {
  const [messages, setMessages] = useState(mockMessages)
  const [filter, setFilter] = useState<'all' | 'unread'>('all')

  const unreadCount = messages.filter(m => !m.read).length
  const pendingAppealRequests = messages.filter(m => m.appealRequest?.status === 'pending').length

  const filteredMessages = filter === 'all' ? messages : messages.filter(m => !m.read)

  const markAsRead = (id: string) => {
    setMessages(prev => prev.map(m => m.id === id ? { ...m, read: true } : m))
  }

  const markAllAsRead = () => {
    setMessages(prev => prev.map(m => ({ ...m, read: true })))
  }

  // 处理申诉次数请求
  const handleAppealRequest = (messageId: string, action: 'approve' | 'reject') => {
    setMessages(prev => prev.map(m => {
      if (m.id === messageId && m.appealRequest) {
        return {
          ...m,
          read: true,
          appealRequest: {
            ...m.appealRequest,
            status: action === 'approve' ? 'approved' : 'rejected',
          },
        }
      }
      return m
    }))
  }

  return (
    <div className="space-y-6">
      {/* 页面标题 */}
      <div className="flex items-center justify-between">
        <div className="flex items-center gap-3">
          <h1 className="text-2xl font-bold text-text-primary">消息中心</h1>
          {unreadCount > 0 && (
            <span className="px-2 py-1 bg-accent-coral/20 text-accent-coral text-sm font-medium rounded-lg">
              {unreadCount} 条未读
            </span>
          )}
        </div>
        <Button variant="secondary" onClick={markAllAsRead} disabled={unreadCount === 0}>
          <Check size={16} />
          全部已读
        </Button>
      </div>

      {/* 筛选 */}
      <div className="flex items-center gap-1 p-1 bg-bg-elevated rounded-lg w-fit">
        <button
          type="button"
          onClick={() => setFilter('all')}
          className={`px-4 py-2 rounded-md text-sm font-medium transition-colors ${
            filter === 'all' ? 'bg-bg-card text-text-primary shadow-sm' : 'text-text-secondary hover:text-text-primary'
          }`}
        >
          全部消息
        </button>
        <button
          type="button"
          onClick={() => setFilter('unread')}
          className={`px-4 py-2 rounded-md text-sm font-medium transition-colors ${
            filter === 'unread' ? 'bg-bg-card text-text-primary shadow-sm' : 'text-text-secondary hover:text-text-primary'
          }`}
        >
          未读消息 ({unreadCount})
        </button>
      </div>

      {/* 消息列表 */}
      <div className="space-y-3">
        {filteredMessages.map((message) => {
          const Icon = message.icon
          const isAppealRequest = message.type === 'appeal_quota_request'
          const appealStatus = message.appealRequest?.status

          return (
            <Card
              key={message.id}
              className={`transition-all ${
                !isAppealRequest ? 'cursor-pointer hover:border-accent-indigo/50' : ''
              } ${!message.read ? 'border-l-4 border-l-accent-indigo' : ''}`}
              onClick={() => !isAppealRequest && markAsRead(message.id)}
            >
              <CardContent className="py-4">
                <div className="flex items-start gap-4">
                  <div className={`w-10 h-10 rounded-lg ${message.bgColor} flex items-center justify-center flex-shrink-0`}>
                    <Icon size={20} className={message.iconColor} />
                  </div>
                  <div className="flex-1 min-w-0">
                    <div className="flex items-center gap-2">
                      <h3 className={`font-medium ${!message.read ? 'text-text-primary' : 'text-text-secondary'}`}>
                        {message.title}
                      </h3>
                      {!message.read && (
                        <span className="w-2 h-2 bg-accent-coral rounded-full" />
                      )}
                      {/* 申诉请求状态标签 */}
                      {isAppealRequest && appealStatus === 'approved' && (
                        <span className="px-2 py-0.5 bg-accent-green/15 text-accent-green text-xs font-medium rounded-full">
                          已同意
                        </span>
                      )}
                      {isAppealRequest && appealStatus === 'rejected' && (
                        <span className="px-2 py-0.5 bg-accent-coral/15 text-accent-coral text-xs font-medium rounded-full">
                          已拒绝
                        </span>
                      )}
                    </div>
                    <p className="text-sm text-text-secondary mt-1">{message.content}</p>
                    <p className="text-xs text-text-tertiary mt-2 flex items-center gap-1">
                      <Clock size={12} />
                      {message.time}
                    </p>

                    {/* 申诉次数请求操作按钮 */}
                    {isAppealRequest && appealStatus === 'pending' && (
                      <div className="flex items-center gap-2 mt-3">
                        <Button
                          variant="primary"
                          size="sm"
                          onClick={(e) => {
                            e.stopPropagation()
                            handleAppealRequest(message.id, 'approve')
                          }}
                        >
                          <CheckCircle size={14} />
                          同意 (+1次)
                        </Button>
                        <Button
                          variant="secondary"
                          size="sm"
                          onClick={(e) => {
                            e.stopPropagation()
                            handleAppealRequest(message.id, 'reject')
                          }}
                        >
                          <XCircle size={14} />
                          拒绝
                        </Button>
                      </div>
                    )}
                  </div>
                  {!isAppealRequest && (
                    <Button variant="ghost" size="sm" onClick={(e) => e.stopPropagation()}>
                      <MoreVertical size={16} />
                    </Button>
                  )}
                </div>
              </CardContent>
            </Card>
          )
        })}
      </div>

      {filteredMessages.length === 0 && (
        <div className="text-center py-16">
          <Bell size={48} className="mx-auto text-text-tertiary opacity-50 mb-4" />
          <p className="text-text-secondary">
            {filter === 'unread' ? '没有未读消息' : '暂无消息'}
          </p>
        </div>
      )}
    </div>
  )
}