'use client'

import { useState, useEffect } from 'react'
import { useRouter, useParams, useSearchParams } from 'next/navigation'
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 { ReviewSteps, getReviewSteps } from '@/components/ui/ReviewSteps'
import {
  ArrowLeft,
  Upload,
  Video,
  CheckCircle,
  XCircle,
  AlertTriangle,
  Clock,
  Loader2,
  RefreshCw,
  Play,
  Radio,
  Shield
} from 'lucide-react'

// 模拟任务数据
const mockTask = {
  id: 'task-001',
  projectName: 'XX品牌618推广',
  brandName: 'XX护肤品牌',
  deadline: '2026-06-18',
  videoStatus: 'pending_upload', // pending_upload | ai_reviewing | ai_result | agent_reviewing | agent_rejected | brand_reviewing | brand_passed | brand_rejected
  videoFile: null as string | null,
  aiResult: null as null | {
    score: number
    hardViolations: Array<{ type: string; content: string; timestamp: number; suggestion: string }>
    sentimentWarnings: Array<{ type: string; content: string; timestamp: number }>
    sellingPointsCovered: Array<{ point: string; covered: boolean; timestamp?: number }>
  },
  agencyReview: null as null | {
    result: 'approved' | 'rejected'
    comment: string
    reviewer: string
    time: string
  },
  brandReview: null as null | {
    result: 'approved' | 'rejected'
    comment: string
    reviewer: string
    time: string
  },
}

// 根据状态获取模拟数据
function getTaskByStatus(status: string) {
  const task = { ...mockTask, videoStatus: status }

  if (status === 'ai_result' || status === 'agent_reviewing' || status === 'agent_rejected' || status === 'brand_reviewing' || status === 'brand_passed' || status === 'brand_rejected') {
    task.videoFile = '夏日护肤推广.mp4'
    task.aiResult = {
      score: 85,
      hardViolations: [
        { type: '违禁词', content: '效果最好', timestamp: 15.5, suggestion: '建议替换为"效果显著"' },
      ],
      sentimentWarnings: [
        { type: '表情预警', content: '表情过于夸张', timestamp: 42.0 },
      ],
      sellingPointsCovered: [
        { point: 'SPF50+ PA++++', covered: true, timestamp: 25.0 },
        { point: '轻薄质地', covered: true, timestamp: 38.0 },
        { point: '不油腻', covered: true, timestamp: 52.0 },
      ],
    }
  }

  if (status === 'agent_rejected') {
    task.agencyReview = {
      result: 'rejected',
      comment: '视频中有竞品Logo露出，请重新拍摄。',
      reviewer: '张经理',
      time: '2026-02-06 16:30',
    }
  }

  if (status === 'brand_reviewing' || status === 'brand_passed' || status === 'brand_rejected') {
    task.agencyReview = {
      result: 'approved',
      comment: '视频质量良好，建议通过。',
      reviewer: '张经理',
      time: '2026-02-06 16:30',
    }
  }

  if (status === 'brand_passed') {
    task.brandReview = {
      result: 'approved',
      comment: '视频通过终审，可以发布。',
      reviewer: '品牌方审核员',
      time: '2026-02-06 19:00',
    }
  }

  if (status === 'brand_rejected') {
    task.brandReview = {
      result: 'rejected',
      comment: '产品特写时间不足，请补拍。',
      reviewer: '品牌方审核员',
      time: '2026-02-06 19:00',
    }
  }

  return task
}

function formatTimestamp(seconds: number): string {
  const mins = Math.floor(seconds / 60)
  const secs = Math.floor(seconds % 60)
  return `${mins}:${secs.toString().padStart(2, '0')}`
}

function UploadSection({ onUpload }: { onUpload: () => void }) {
  const [file, setFile] = useState<File | null>(null)
  const [uploadProgress, setUploadProgress] = useState(0)
  const [isUploading, setIsUploading] = useState(false)

  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    const selectedFile = e.target.files?.[0]
    if (selectedFile) {
      setFile(selectedFile)
    }
  }

  const handleUpload = () => {
    setIsUploading(true)
    const timer = setInterval(() => {
      setUploadProgress(prev => {
        if (prev >= 100) {
          clearInterval(timer)
          setTimeout(onUpload, 500)
          return 100
        }
        return prev + 10
      })
    }, 200)
  }

  return (
    <Card>
      <CardHeader>
        <CardTitle className="flex items-center gap-2">
          <Upload size={18} className="text-purple-400" />
          上传视频
        </CardTitle>
      </CardHeader>
      <CardContent className="space-y-4">
        <div className="border-2 border-dashed border-border-subtle rounded-lg p-8 text-center hover:border-accent-indigo/50 transition-colors">
          {file ? (
            <div className="space-y-4">
              <div className="flex items-center justify-center gap-3">
                <Video size={24} className="text-purple-400" />
                <span className="text-text-primary">{file.name}</span>
                {!isUploading && (
                  <button
                    type="button"
                    onClick={() => setFile(null)}
                    className="p-1 hover:bg-bg-elevated rounded-full"
                  >
                    <XCircle size={16} className="text-text-tertiary" />
                  </button>
                )}
              </div>
              {isUploading && (
                <div className="w-full max-w-xs mx-auto">
                  <div className="h-2 bg-bg-elevated rounded-full overflow-hidden mb-2">
                    <div className="h-full bg-accent-indigo transition-all" style={{ width: `${uploadProgress}%` }} />
                  </div>
                  <p className="text-sm text-text-tertiary">上传中 {uploadProgress}%</p>
                </div>
              )}
            </div>
          ) : (
            <label className="cursor-pointer">
              <Upload size={32} className="mx-auto text-text-tertiary mb-3" />
              <p className="text-text-secondary mb-1">点击或拖拽上传视频文件</p>
              <p className="text-xs text-text-tertiary">支持 MP4、MOV、AVI 格式，最大 500MB</p>
              <input
                type="file"
                accept="video/*"
                onChange={handleFileChange}
                className="hidden"
              />
            </label>
          )}
        </div>
        <Button onClick={handleUpload} disabled={!file || isUploading} fullWidth>
          {isUploading ? '上传中...' : '提交视频'}
        </Button>
      </CardContent>
    </Card>
  )
}

function AIReviewingSection() {
  const [progress, setProgress] = useState(0)
  const [currentStep, setCurrentStep] = useState('正在解析视频...')

  useEffect(() => {
    const steps = [
      '正在解析视频...',
      '正在提取音频转文字...',
      '正在分析画面内容...',
      '正在检测违禁内容...',
      '正在分析卖点覆盖...',
      '正在生成审核报告...',
    ]
    let stepIndex = 0

    const timer = setInterval(() => {
      setProgress(prev => {
        if (prev >= 100) {
          clearInterval(timer)
          return 100
        }
        return prev + 5
      })
    }, 300)

    const stepTimer = setInterval(() => {
      stepIndex = (stepIndex + 1) % steps.length
      setCurrentStep(steps[stepIndex])
    }, 1500)

    return () => {
      clearInterval(timer)
      clearInterval(stepTimer)
    }
  }, [])

  return (
    <Card>
      <CardContent className="py-8 text-center">
        <Loader2 size={48} className="mx-auto text-purple-400 mb-4 animate-spin" />
        <h3 className="text-lg font-medium text-text-primary mb-2">AI 正在审核您的视频</h3>
        <p className="text-text-secondary mb-4">请稍候，视频审核可能需要 3-5 分钟</p>
        <div className="w-full max-w-md mx-auto">
          <div className="h-2 bg-bg-elevated rounded-full overflow-hidden mb-2">
            <div className="h-full bg-purple-400 transition-all" style={{ width: `${progress}%` }} />
          </div>
          <p className="text-sm text-text-tertiary">{progress}%</p>
        </div>
        <div className="mt-4 p-3 bg-bg-elevated rounded-lg max-w-md mx-auto">
          <p className="text-sm text-text-secondary">{currentStep}</p>
        </div>
      </CardContent>
    </Card>
  )
}

function AIResultSection({ task }: { task: ReturnType<typeof getTaskByStatus> }) {
  if (!task.aiResult) return null

  return (
    <div className="space-y-4">
      {/* AI 评分 */}
      <Card>
        <CardContent className="py-4">
          <div className="flex items-center justify-between">
            <span className="text-text-secondary">AI 综合评分</span>
            <span className={`text-3xl font-bold ${task.aiResult.score >= 85 ? 'text-accent-green' : task.aiResult.score >= 70 ? 'text-yellow-400' : 'text-accent-coral'}`}>
              {task.aiResult.score}
            </span>
          </div>
        </CardContent>
      </Card>

      {/* 硬性合规 */}
      {task.aiResult.hardViolations.length > 0 && (
        <Card>
          <CardHeader className="pb-2">
            <CardTitle className="flex items-center gap-2 text-base">
              <Shield size={16} className="text-red-500" />
              硬性合规 ({task.aiResult.hardViolations.length})
            </CardTitle>
          </CardHeader>
          <CardContent className="space-y-2">
            {task.aiResult.hardViolations.map((v, idx) => (
              <div key={idx} className="p-3 bg-accent-coral/10 rounded-lg border border-accent-coral/30">
                <div className="flex items-center gap-2 mb-1">
                  <ErrorTag>{v.type}</ErrorTag>
                  <span className="text-xs text-text-tertiary">{formatTimestamp(v.timestamp)}</span>
                </div>
                <p className="text-sm text-text-primary">「{v.content}」</p>
                <p className="text-xs text-accent-indigo mt-1">{v.suggestion}</p>
              </div>
            ))}
          </CardContent>
        </Card>
      )}

      {/* 舆情雷达 */}
      {task.aiResult.sentimentWarnings.length > 0 && (
        <Card>
          <CardHeader className="pb-2">
            <CardTitle className="flex items-center gap-2 text-base">
              <Radio size={16} className="text-orange-500" />
              舆情雷达（仅提示）
            </CardTitle>
          </CardHeader>
          <CardContent className="space-y-2">
            {task.aiResult.sentimentWarnings.map((w, idx) => (
              <div key={idx} className="p-3 bg-orange-500/10 rounded-lg border border-orange-500/30">
                <div className="flex items-center gap-2 mb-1">
                  <WarningTag>{w.type}</WarningTag>
                  <span className="text-xs text-text-tertiary">{formatTimestamp(w.timestamp)}</span>
                </div>
                <p className="text-sm text-orange-400">{w.content}</p>
              </div>
            ))}
          </CardContent>
        </Card>
      )}

      {/* 卖点覆盖 */}
      <Card>
        <CardHeader className="pb-2">
          <CardTitle className="flex items-center gap-2 text-base">
            <CheckCircle size={16} className="text-accent-green" />
            卖点覆盖
          </CardTitle>
        </CardHeader>
        <CardContent className="space-y-2">
          {task.aiResult.sellingPointsCovered.map((sp, idx) => (
            <div key={idx} className="flex items-center justify-between p-2 rounded-lg bg-bg-elevated">
              <div className="flex items-center gap-2">
                {sp.covered ? (
                  <CheckCircle size={16} className="text-accent-green" />
                ) : (
                  <XCircle size={16} className="text-accent-coral" />
                )}
                <span className="text-sm text-text-primary">{sp.point}</span>
              </div>
              {sp.covered && sp.timestamp && (
                <span className="text-xs text-text-tertiary">{formatTimestamp(sp.timestamp)}</span>
              )}
            </div>
          ))}
        </CardContent>
      </Card>
    </div>
  )
}

function ReviewFeedbackSection({ review, type }: { review: NonNullable<typeof mockTask.agencyReview>; type: 'agency' | 'brand' }) {
  const isApproved = review.result === 'approved'
  const title = type === 'agency' ? '代理商审核意见' : '品牌方终审意见'

  return (
    <Card className={isApproved ? 'border-accent-green/30' : 'border-accent-coral/30'}>
      <CardHeader>
        <CardTitle className="flex items-center gap-2">
          {isApproved ? (
            <CheckCircle size={18} className="text-accent-green" />
          ) : (
            <XCircle size={18} className="text-accent-coral" />
          )}
          {title}
        </CardTitle>
      </CardHeader>
      <CardContent>
        <div className="flex items-center gap-2 mb-2">
          <span className="font-medium text-text-primary">{review.reviewer}</span>
          {isApproved ? <SuccessTag>通过</SuccessTag> : <ErrorTag>驳回</ErrorTag>}
        </div>
        <p className="text-text-secondary">{review.comment}</p>
        <p className="text-xs text-text-tertiary mt-2">{review.time}</p>
      </CardContent>
    </Card>
  )
}

function WaitingSection({ message }: { message: string }) {
  return (
    <Card>
      <CardContent className="py-8 text-center">
        <Clock size={48} className="mx-auto text-accent-indigo mb-4" />
        <h3 className="text-lg font-medium text-text-primary mb-2">{message}</h3>
        <p className="text-text-secondary">请耐心等待，审核结果将通过消息通知您</p>
      </CardContent>
    </Card>
  )
}

function SuccessSection() {
  return (
    <Card className="border-accent-green/30">
      <CardContent className="py-8 text-center">
        <CheckCircle size={64} className="mx-auto text-accent-green mb-4" />
        <h3 className="text-xl font-bold text-text-primary mb-2">🎉 视频审核通过！</h3>
        <p className="text-text-secondary mb-6">恭喜您，视频已通过所有审核，可以发布了</p>
        <div className="flex justify-center gap-3">
          <Button variant="secondary">
            <Play size={16} />
            预览视频
          </Button>
          <Button>
            分享链接
          </Button>
        </div>
      </CardContent>
    </Card>
  )
}

export default function CreatorVideoPage() {
  const router = useRouter()
  const params = useParams()
  const searchParams = useSearchParams()
  const status = searchParams.get('status') || 'pending_upload'

  const [task, setTask] = useState(getTaskByStatus(status))

  // 模拟状态切换
  const simulateUpload = () => {
    setTask(getTaskByStatus('ai_reviewing'))
    setTimeout(() => {
      setTask(getTaskByStatus('ai_result'))
    }, 5000)
  }

  const handleResubmit = () => {
    setTask(getTaskByStatus('pending_upload'))
  }

  const getStatusDisplay = () => {
    switch (task.videoStatus) {
      case 'pending_upload': return '待上传视频'
      case 'ai_reviewing': return 'AI 审核中'
      case 'ai_result': return 'AI 审核完成'
      case 'agent_reviewing': return '代理商审核中'
      case 'agent_rejected': return '代理商驳回'
      case 'brand_reviewing': return '品牌方终审中'
      case 'brand_passed': return '审核通过'
      case 'brand_rejected': return '品牌方驳回'
      default: return '未知状态'
    }
  }

  return (
    <div className="space-y-6 max-w-2xl mx-auto">
      {/* 顶部导航 */}
      <div className="flex items-center gap-4">
        <button type="button" onClick={() => router.back()} className="p-2 hover:bg-bg-elevated rounded-full">
          <ArrowLeft size={20} className="text-text-primary" />
        </button>
        <div className="flex-1">
          <h1 className="text-xl font-bold text-text-primary">{task.projectName}</h1>
          <p className="text-sm text-text-secondary">视频阶段 · {getStatusDisplay()}</p>
        </div>
      </div>

      {/* 审核流程进度条 */}
      <Card>
        <CardContent className="py-4">
          <ReviewSteps steps={getReviewSteps(task.videoStatus)} />
        </CardContent>
      </Card>

      {/* 根据状态显示不同内容 */}
      {task.videoStatus === 'pending_upload' && (
        <UploadSection onUpload={simulateUpload} />
      )}

      {task.videoStatus === 'ai_reviewing' && (
        <AIReviewingSection />
      )}

      {task.videoStatus === 'ai_result' && (
        <>
          <AIResultSection task={task} />
          <WaitingSection message="等待代理商审核" />
        </>
      )}

      {task.videoStatus === 'agent_reviewing' && (
        <>
          <AIResultSection task={task} />
          <WaitingSection message="等待代理商审核" />
        </>
      )}

      {task.videoStatus === 'agent_rejected' && task.agencyReview && (
        <>
          <ReviewFeedbackSection review={task.agencyReview} type="agency" />
          <AIResultSection task={task} />
          <div className="flex gap-3">
            <Button variant="secondary" onClick={handleResubmit} fullWidth>
              <RefreshCw size={16} />
              重新上传
            </Button>
          </div>
        </>
      )}

      {task.videoStatus === 'brand_reviewing' && task.agencyReview && (
        <>
          <ReviewFeedbackSection review={task.agencyReview} type="agency" />
          <AIResultSection task={task} />
          <WaitingSection message="等待品牌方终审" />
        </>
      )}

      {task.videoStatus === 'brand_passed' && task.agencyReview && task.brandReview && (
        <>
          <SuccessSection />
          <ReviewFeedbackSection review={task.brandReview} type="brand" />
          <ReviewFeedbackSection review={task.agencyReview} type="agency" />
          <AIResultSection task={task} />
        </>
      )}

      {task.videoStatus === 'brand_rejected' && task.agencyReview && task.brandReview && (
        <>
          <ReviewFeedbackSection review={task.brandReview} type="brand" />
          <ReviewFeedbackSection review={task.agencyReview} type="agency" />
          <AIResultSection task={task} />
          <div className="flex gap-3">
            <Button variant="secondary" onClick={handleResubmit} fullWidth>
              <RefreshCw size={16} />
              重新上传
            </Button>
          </div>
        </>
      )}
    </div>
  )
}