'use client'

import { useState } from 'react'
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/Card'
import { Button } from '@/components/ui/Button'
import { Modal } from '@/components/ui/Modal'
import { SuccessTag, PendingTag, WarningTag } from '@/components/ui/Tag'
import {
  Search,
  Plus,
  Users,
  TrendingUp,
  TrendingDown,
  Copy,
  CheckCircle,
  Clock,
  MoreVertical,
  FileText,
  Video,
  ChevronDown,
  ChevronRight,
  PlusCircle,
  UserPlus,
  AlertCircle
} from 'lucide-react'

// 任务进度阶段
type TaskStage = 'script_pending' | 'script_ai_review' | 'script_agency_review' | 'script_brand_review' |
  'video_pending' | 'video_ai_review' | 'video_agency_review' | 'video_brand_review' | 'completed'

// 任务阶段配置
const stageConfig: Record<TaskStage, { label: string; color: string; bgColor: string }> = {
  script_pending: { label: '待提交脚本', color: 'text-text-tertiary', bgColor: 'bg-bg-elevated' },
  script_ai_review: { label: '脚本AI审核中', color: 'text-accent-indigo', bgColor: 'bg-accent-indigo/15' },
  script_agency_review: { label: '脚本代理商审核', color: 'text-purple-400', bgColor: 'bg-purple-500/15' },
  script_brand_review: { label: '脚本品牌方终审', color: 'text-accent-blue', bgColor: 'bg-accent-blue/15' },
  video_pending: { label: '待提交视频', color: 'text-accent-amber', bgColor: 'bg-accent-amber/15' },
  video_ai_review: { label: '视频AI审核中', color: 'text-accent-indigo', bgColor: 'bg-accent-indigo/15' },
  video_agency_review: { label: '视频代理商审核', color: 'text-purple-400', bgColor: 'bg-purple-500/15' },
  video_brand_review: { label: '视频品牌方终审', color: 'text-accent-blue', bgColor: 'bg-accent-blue/15' },
  completed: { label: '已完成', color: 'text-accent-green', bgColor: 'bg-accent-green/15' },
}

// 任务类型
interface CreatorTask {
  id: string
  name: string
  projectName: string
  stage: TaskStage
  appealRemaining: number
  appealUsed: number
}

// 达人类型
interface Creator {
  id: string
  creatorId: string // 达人ID（用于邀请和显示）
  name: string
  avatar: string
  status: 'active' | 'pending' | 'paused'
  projectCount: number
  scriptCount: { total: number; passed: number }
  videoCount: { total: number; passed: number }
  passRate: number
  trend: 'up' | 'down' | 'stable'
  joinedAt: string
  tasks: CreatorTask[]
}

// 模拟达人列表
const mockCreators: Creator[] = [
  {
    id: 'c-001',
    creatorId: 'CR123456',
    name: '小美护肤',
    avatar: '小',
    status: 'active',
    projectCount: 5,
    scriptCount: { total: 12, passed: 10 },
    videoCount: { total: 10, passed: 8 },
    passRate: 85,
    trend: 'up',
    joinedAt: '2025-08-15',
    tasks: [
      { id: 'task-001', name: '夏日护肤推广', projectName: 'XX品牌618', stage: 'video_agency_review', appealRemaining: 1, appealUsed: 0 },
      { id: 'task-002', name: '防晒霜测评', projectName: 'XX品牌618', stage: 'script_brand_review', appealRemaining: 0, appealUsed: 1 },
    ],
  },
  {
    id: 'c-002',
    creatorId: 'CR789012',
    name: '美妆Lisa',
    avatar: 'L',
    status: 'active',
    projectCount: 3,
    scriptCount: { total: 8, passed: 7 },
    videoCount: { total: 6, passed: 5 },
    passRate: 80,
    trend: 'stable',
    joinedAt: '2025-10-20',
    tasks: [
      { id: 'task-003', name: '新品口红试色', projectName: '口红系列推广', stage: 'video_pending', appealRemaining: 2, appealUsed: 0 },
    ],
  },
  {
    id: 'c-003',
    creatorId: 'CR345678',
    name: '健身教练王',
    avatar: '王',
    status: 'active',
    projectCount: 2,
    scriptCount: { total: 5, passed: 5 },
    videoCount: { total: 4, passed: 4 },
    passRate: 100,
    trend: 'up',
    joinedAt: '2025-12-01',
    tasks: [
      { id: 'task-004', name: '健身器材使用教程', projectName: 'XX运动品牌', stage: 'script_ai_review', appealRemaining: 1, appealUsed: 0 },
    ],
  },
  {
    id: 'c-004',
    creatorId: 'CR901234',
    name: '时尚达人',
    avatar: '时',
    status: 'pending',
    projectCount: 0,
    scriptCount: { total: 0, passed: 0 },
    videoCount: { total: 0, passed: 0 },
    passRate: 0,
    trend: 'stable',
    joinedAt: '2026-02-05',
    tasks: [],
  },
]

function StatusTag({ status }: { status: string }) {
  if (status === 'active') return <SuccessTag>已激活</SuccessTag>
  if (status === 'pending') return <PendingTag>待接受</PendingTag>
  return <WarningTag>已暂停</WarningTag>
}

function StageTag({ stage }: { stage: TaskStage }) {
  const config = stageConfig[stage]
  return (
    <span className={`px-2 py-1 rounded-md text-xs font-medium ${config.bgColor} ${config.color}`}>
      {config.label}
    </span>
  )
}

export default function AgencyCreatorsPage() {
  const [searchQuery, setSearchQuery] = useState('')
  const [showInviteModal, setShowInviteModal] = useState(false)
  const [inviteCreatorId, setInviteCreatorId] = useState('')
  const [inviteResult, setInviteResult] = useState<{ success: boolean; message: string } | null>(null)
  const [expandedCreators, setExpandedCreators] = useState<string[]>([])
  const [creators, setCreators] = useState(mockCreators)
  const [copiedId, setCopiedId] = useState<string | null>(null)

  const filteredCreators = creators.filter(creator =>
    creator.name.toLowerCase().includes(searchQuery.toLowerCase()) ||
    creator.creatorId.toLowerCase().includes(searchQuery.toLowerCase())
  )

  // 切换展开状态
  const toggleExpand = (creatorId: string) => {
    setExpandedCreators(prev =>
      prev.includes(creatorId)
        ? prev.filter(id => id !== creatorId)
        : [...prev, creatorId]
    )
  }

  // 复制达人ID
  const handleCopyCreatorId = async (creatorId: string) => {
    await navigator.clipboard.writeText(creatorId)
    setCopiedId(creatorId)
    setTimeout(() => setCopiedId(null), 2000)
  }

  // 增加申诉次数
  const handleAddAppealQuota = (creatorId: string, taskId: string) => {
    setCreators(prev => prev.map(creator => {
      if (creator.id === creatorId) {
        return {
          ...creator,
          tasks: creator.tasks.map(task => {
            if (task.id === taskId) {
              return { ...task, appealRemaining: task.appealRemaining + 1 }
            }
            return task
          }),
        }
      }
      return creator
    }))
  }

  // 邀请达人
  const handleInvite = () => {
    if (!inviteCreatorId.trim()) {
      setInviteResult({ success: false, message: '请输入达人ID' })
      return
    }

    // 模拟检查达人ID是否存在
    const idPattern = /^CR\d{6}$/
    if (!idPattern.test(inviteCreatorId.toUpperCase())) {
      setInviteResult({ success: false, message: '达人ID格式错误，应为CR+6位数字' })
      return
    }

    // 检查是否已邀请
    if (creators.some(c => c.creatorId === inviteCreatorId.toUpperCase())) {
      setInviteResult({ success: false, message: '该达人已在您的列表中' })
      return
    }

    // 模拟发送邀请成功
    setInviteResult({ success: true, message: `已向达人 ${inviteCreatorId.toUpperCase()} 发送邀请` })
  }

  const handleCloseInviteModal = () => {
    setShowInviteModal(false)
    setInviteCreatorId('')
    setInviteResult(null)
  }

  return (
    <div className="space-y-6">
      {/* 页面标题 */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-2xl font-bold text-text-primary">达人管理</h1>
          <p className="text-sm text-text-secondary mt-1">管理合作达人，查看任务进度和申诉次数</p>
        </div>
        <Button onClick={() => setShowInviteModal(true)}>
          <Plus size={16} />
          邀请达人
        </Button>
      </div>

      {/* 统计卡片 */}
      <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
        <Card>
          <CardContent className="py-4">
            <div className="flex items-center justify-between">
              <div>
                <p className="text-sm text-text-secondary">总达人数</p>
                <p className="text-2xl font-bold text-text-primary">{mockCreators.length}</p>
              </div>
              <div className="w-10 h-10 rounded-lg bg-accent-indigo/20 flex items-center justify-center">
                <Users size={20} className="text-accent-indigo" />
              </div>
            </div>
          </CardContent>
        </Card>
        <Card>
          <CardContent className="py-4">
            <div className="flex items-center justify-between">
              <div>
                <p className="text-sm text-text-secondary">已激活</p>
                <p className="text-2xl font-bold text-accent-green">{mockCreators.filter(c => c.status === 'active').length}</p>
              </div>
              <div className="w-10 h-10 rounded-lg bg-accent-green/20 flex items-center justify-center">
                <CheckCircle size={20} className="text-accent-green" />
              </div>
            </div>
          </CardContent>
        </Card>
        <Card>
          <CardContent className="py-4">
            <div className="flex items-center justify-between">
              <div>
                <p className="text-sm text-text-secondary">总脚本数</p>
                <p className="text-2xl font-bold text-text-primary">{mockCreators.reduce((sum, c) => sum + c.scriptCount.total, 0)}</p>
              </div>
              <div className="w-10 h-10 rounded-lg bg-purple-500/20 flex items-center justify-center">
                <FileText size={20} className="text-purple-400" />
              </div>
            </div>
          </CardContent>
        </Card>
        <Card>
          <CardContent className="py-4">
            <div className="flex items-center justify-between">
              <div>
                <p className="text-sm text-text-secondary">总视频数</p>
                <p className="text-2xl font-bold text-text-primary">{mockCreators.reduce((sum, c) => sum + c.videoCount.total, 0)}</p>
              </div>
              <div className="w-10 h-10 rounded-lg bg-orange-500/20 flex items-center justify-center">
                <Video size={20} className="text-orange-400" />
              </div>
            </div>
          </CardContent>
        </Card>
      </div>

      {/* 搜索 */}
      <div className="relative max-w-md">
        <Search size={18} className="absolute left-3 top-1/2 -translate-y-1/2 text-text-tertiary" />
        <input
          type="text"
          placeholder="搜索达人名称或达人ID..."
          value={searchQuery}
          onChange={(e) => setSearchQuery(e.target.value)}
          className="w-full pl-10 pr-4 py-2.5 border border-border-subtle rounded-xl bg-bg-elevated text-text-primary focus:outline-none focus:ring-2 focus:ring-accent-indigo"
        />
      </div>

      {/* 达人列表 */}
      <Card>
        <CardContent className="p-0">
          <table className="w-full">
            <thead>
              <tr className="border-b border-border-subtle text-left text-sm text-text-secondary bg-bg-elevated">
                <th className="px-6 py-4 font-medium">达人</th>
                <th className="px-6 py-4 font-medium">达人ID</th>
                <th className="px-6 py-4 font-medium">状态</th>
                <th className="px-6 py-4 font-medium">脚本</th>
                <th className="px-6 py-4 font-medium">视频</th>
                <th className="px-6 py-4 font-medium">通过率</th>
                <th className="px-6 py-4 font-medium">加入时间</th>
                <th className="px-6 py-4 font-medium">操作</th>
              </tr>
            </thead>
            <tbody>
              {filteredCreators.map((creator) => {
                const isExpanded = expandedCreators.includes(creator.id)
                const hasActiveTasks = creator.tasks.length > 0

                return (
                  <>
                    <tr key={creator.id} className="border-b border-border-subtle hover:bg-bg-elevated/50">
                      <td className="px-6 py-4">
                        <div className="flex items-center gap-3">
                          {/* 展开按钮 */}
                          {hasActiveTasks ? (
                            <button
                              type="button"
                              onClick={() => toggleExpand(creator.id)}
                              className="w-6 h-6 rounded flex items-center justify-center hover:bg-bg-elevated"
                            >
                              {isExpanded ? (
                                <ChevronDown size={16} className="text-text-secondary" />
                              ) : (
                                <ChevronRight size={16} className="text-text-secondary" />
                              )}
                            </button>
                          ) : (
                            <div className="w-6" />
                          )}
                          <div className="w-10 h-10 rounded-full bg-gradient-to-br from-accent-indigo to-purple-500 flex items-center justify-center">
                            <span className="text-white font-medium">{creator.avatar}</span>
                          </div>
                          <div className="font-medium text-text-primary">{creator.name}</div>
                        </div>
                      </td>
                      <td className="px-6 py-4">
                        <div className="flex items-center gap-2">
                          <code className="px-2 py-1 rounded bg-bg-elevated text-sm font-mono text-accent-indigo">
                            {creator.creatorId}
                          </code>
                          <button
                            type="button"
                            onClick={() => handleCopyCreatorId(creator.creatorId)}
                            className="p-1 rounded hover:bg-bg-elevated transition-colors"
                            title="复制达人ID"
                          >
                            {copiedId === creator.creatorId ? (
                              <CheckCircle size={14} className="text-accent-green" />
                            ) : (
                              <Copy size={14} className="text-text-tertiary" />
                            )}
                          </button>
                        </div>
                      </td>
                      <td className="px-6 py-4">
                        <StatusTag status={creator.status} />
                      </td>
                      <td className="px-6 py-4">
                        <span className="text-text-primary">{creator.scriptCount.passed}</span>
                        <span className="text-text-tertiary">/{creator.scriptCount.total}</span>
                      </td>
                      <td className="px-6 py-4">
                        <span className="text-text-primary">{creator.videoCount.passed}</span>
                        <span className="text-text-tertiary">/{creator.videoCount.total}</span>
                      </td>
                      <td className="px-6 py-4">
                        {creator.status === 'active' && creator.passRate > 0 ? (
                          <div className="flex items-center gap-2">
                            <span className={`font-medium ${creator.passRate >= 90 ? 'text-accent-green' : creator.passRate >= 80 ? 'text-accent-indigo' : 'text-orange-400'}`}>
                              {creator.passRate}%
                            </span>
                            {creator.trend === 'up' && <TrendingUp size={14} className="text-accent-green" />}
                            {creator.trend === 'down' && <TrendingDown size={14} className="text-accent-coral" />}
                          </div>
                        ) : (
                          <span className="text-text-tertiary">-</span>
                        )}
                      </td>
                      <td className="px-6 py-4 text-sm text-text-tertiary">{creator.joinedAt}</td>
                      <td className="px-6 py-4">
                        <Button variant="ghost" size="sm">
                          <MoreVertical size={16} />
                        </Button>
                      </td>
                    </tr>
                    {/* 展开的任务列表 */}
                    {isExpanded && hasActiveTasks && (
                      <tr key={`${creator.id}-tasks`} className="bg-bg-elevated/30">
                        <td colSpan={8} className="px-6 py-4">
                          <div className="ml-9 pl-6 border-l-2 border-accent-indigo/30">
                            <div className="text-sm font-medium text-text-secondary mb-3">进行中的任务</div>
                            <div className="space-y-2">
                              {creator.tasks.map(task => (
                                <div key={task.id} className="flex items-center justify-between p-4 bg-bg-card rounded-xl">
                                  <div className="flex items-center gap-4">
                                    <div>
                                      <div className="font-medium text-text-primary">{task.name}</div>
                                      <div className="text-xs text-text-tertiary mt-0.5">项目: {task.projectName}</div>
                                    </div>
                                    <StageTag stage={task.stage} />
                                  </div>
                                  <div className="flex items-center gap-4">
                                    <div className="flex items-center gap-3 text-sm">
                                      <span className="text-text-tertiary">申诉次数:</span>
                                      <span className="text-accent-indigo font-medium">{task.appealRemaining}</span>
                                      <span className="text-text-tertiary">/</span>
                                      <span className="text-text-tertiary">已用 {task.appealUsed}</span>
                                    </div>
                                    <Button
                                      variant="secondary"
                                      size="sm"
                                      onClick={() => handleAddAppealQuota(creator.id, task.id)}
                                    >
                                      <PlusCircle size={14} />
                                      +1 次
                                    </Button>
                                  </div>
                                </div>
                              ))}
                            </div>
                          </div>
                        </td>
                      </tr>
                    )}
                  </>
                )
              })}
            </tbody>
          </table>

          {filteredCreators.length === 0 && (
            <div className="text-center py-12 text-text-tertiary">
              <Users size={48} className="mx-auto mb-4 opacity-50" />
              <p>没有找到匹配的达人</p>
            </div>
          )}
        </CardContent>
      </Card>

      {/* 邀请达人弹窗 */}
      <Modal isOpen={showInviteModal} onClose={handleCloseInviteModal} title="邀请达人">
        <div className="space-y-4">
          <p className="text-text-secondary text-sm">
            输入达人ID邀请合作。达人ID可在达人的个人中心查看。
          </p>

          <div>
            <label className="block text-sm font-medium text-text-primary mb-2">达人ID</label>
            <div className="flex gap-2">
              <input
                type="text"
                value={inviteCreatorId}
                onChange={(e) => {
                  setInviteCreatorId(e.target.value.toUpperCase())
                  setInviteResult(null)
                }}
                placeholder="例如: CR123456"
                className="flex-1 px-4 py-2.5 border border-border-subtle rounded-xl bg-bg-elevated text-text-primary font-mono focus:outline-none focus:ring-2 focus:ring-accent-indigo"
              />
              <Button variant="secondary" onClick={handleInvite}>
                查找
              </Button>
            </div>
            <p className="text-xs text-text-tertiary mt-2">达人ID格式：CR + 6位数字</p>
          </div>

          {inviteResult && (
            <div className={`p-4 rounded-xl flex items-start gap-3 ${
              inviteResult.success ? 'bg-accent-green/10 border border-accent-green/20' : 'bg-accent-coral/10 border border-accent-coral/20'
            }`}>
              {inviteResult.success ? (
                <CheckCircle size={18} className="text-accent-green flex-shrink-0 mt-0.5" />
              ) : (
                <AlertCircle size={18} className="text-accent-coral flex-shrink-0 mt-0.5" />
              )}
              <span className={`text-sm ${inviteResult.success ? 'text-accent-green' : 'text-accent-coral'}`}>
                {inviteResult.message}
              </span>
            </div>
          )}

          <div className="flex gap-3 justify-end pt-4">
            <Button variant="ghost" onClick={handleCloseInviteModal}>
              取消
            </Button>
            <Button
              onClick={() => {
                if (inviteResult?.success) {
                  handleCloseInviteModal()
                }
              }}
              disabled={!inviteResult?.success}
            >
              <UserPlus size={16} />
              发送邀请
            </Button>
          </div>
        </div>
      </Modal>
    </div>
  )
}
