'use client'

import React, { useMemo } from 'react'
import { TaskObject } from '@/api/DTO/movieEdit'
import { GlassIconButton } from '@/components/ui/glass-icon-button'
import { Pencil, RotateCcw, Download, ArrowDownWideNarrow, Scissors, Maximize, Minimize, MessageCircleMore } from 'lucide-react'

interface H5TaskInfoProps {
  /** 标题文案 */
  title: string
  /** 当前分镜序号（从1开始） */
  current: number
  /** 任务对象（用于读取总数等信息） */
  taskObject: TaskObject
  /** video：聊天编辑 */
  onEditWithChat?: () => void
  /** 下载：全部分镜 */
  onDownloadAll?: () => void
  /** 下载：最终成片 */
  onDownloadFinal?: () => void
  /** 下载：当前分镜视频 */
  onDownloadCurrent?: () => void
  /** video：失败时显示重试 */
  showRetry?: boolean
  onRetry?: () => void
  className?: string
}

const H5TaskInfo: React.FC<H5TaskInfoProps> = ({
  title,
  current,
  taskObject,
  onEditWithChat,
  onDownloadAll,
  onDownloadFinal,
  onDownloadCurrent,
  showRetry,
  onRetry,
  className
}) => {
  const total = useMemo(() => {
    if (taskObject.currentStage === 'video' || taskObject.currentStage === 'final_video') {
      return taskObject.videos?.total_count || taskObject.videos?.data?.length || 0
    }
    if (taskObject.currentStage === 'scene' || taskObject.currentStage === 'character') {
      const rolesTotal = taskObject.roles?.total_count || taskObject.roles?.data?.length || 0
      const scenesTotal = taskObject.scenes?.total_count || taskObject.scenes?.data?.length || 0
      return rolesTotal + scenesTotal
    }
    return 0
  }, [taskObject])

  const shouldShowCount = taskObject.currentStage !== 'script'

  const displayCurrent = useMemo(() => {
    if (taskObject.currentStage === 'video' || taskObject.currentStage === 'final_video') {
      return Math.max(current, 1)
    }
    if (taskObject.currentStage === 'scene' || taskObject.currentStage === 'character') {
      const bounded = Math.min(Math.max(current, 1), Math.max(total, 1))
      return bounded
    }
    return 0
  }, [taskObject, current, total])

  return (
    <div
      data-alt="h5-header"
      className={`absolute top-0 left-0 right-0 z-[50] pr-2 ${className || ''}`}
    >
      <div
        data-alt="h5-header-bar"
        className="flex items-start justify-between"
      >
        <div data-alt="title-area" className="flex flex-col min-w-0 bg-gradient-to-b from-slate-900/80 via-slate-900/40 to-transparent backdrop-blur-sm rounded-lg p-4">
          <h1
            data-alt="title"
            className="text-white text-lg font-bold"
            title={title}
          >
            {title || '...'}
          </h1>
          {shouldShowCount && (
            <span data-alt="shot-count" className="flex items-center gap-4 text-sm text-slate-300">
              分镜 {displayCurrent}/{Math.max(total, 1)}
            </span>
          )}
        </div>

        <div data-alt="actions" className="flex flex-col items-center gap-2">
          {taskObject.currentStage === 'final_video' && (
            <div data-alt="final-video-actions" className="flex flex-col items-center gap-2">
              <GlassIconButton
                data-alt="download-all-button"
                className="w-10 h-10 bg-gradient-to-br from-purple-500/80 to-purple-600/80 backdrop-blur-xl border border-purple-400/30 rounded-full flex items-center justify-center hover:from-purple-400/80 hover:to-purple-500/80 transition-all"
                icon={ArrowDownWideNarrow}
                size="sm"
                aria-label="download-all"
                onClick={onDownloadAll}
              />
              <GlassIconButton
                data-alt="download-final-button"
                className="w-10 h-10 bg-gradient-to-br from-amber-500/80 to-yellow-600/80 backdrop-blur-xl border border-amber-400/30 rounded-full flex items-center justify-center hover:from-amber-400/80 hover:to-yellow-500/80 transition-all"
                icon={Download}
                size="sm"
                aria-label="download-final"
                onClick={onDownloadFinal}
              />
            </div>
          )}

          {taskObject.currentStage === 'video' && (
            <div data-alt="video-actions" className="flex flex-col items-center gap-2">
              <GlassIconButton
                data-alt="edit-with-chat-button"
                className="w-10 h-10 bg-gradient-to-br from-blue-500/80 to-blue-600/80 backdrop-blur-xl border border-blue-400/30 rounded-full flex items-center justify-center hover:from-blue-400/80 hover:to-blue-500/80 transition-all"
                icon={MessageCircleMore}
                size="sm"
                aria-label="edit-with-chat"
                onClick={onEditWithChat}
              />
              <GlassIconButton
                data-alt="download-all-button"
                className="w-10 h-10 bg-gradient-to-br from-purple-500/80 to-purple-600/80 backdrop-blur-xl border border-purple-400/30 rounded-full flex items-center justify-center hover:from-purple-400/80 hover:to-purple-500/80 transition-all"
                icon={ArrowDownWideNarrow}
                size="sm"
                aria-label="download-all"
                onClick={onDownloadAll}
              />
              <GlassIconButton
                data-alt="download-current-button"
                className="w-10 h-10 bg-gradient-to-br from-amber-500/80 to-yellow-600/80 backdrop-blur-xl border border-amber-400/30 rounded-full flex items-center justify-center hover:from-amber-400/80 hover:to-yellow-500/80 transition-all"
                icon={Download}
                size="sm"
                aria-label="download-current"
                onClick={onDownloadCurrent}
              />
              {showRetry && (
                <GlassIconButton
                  data-alt="retry-button"
                  className="w-10 h-10 bg-gradient-to-br from-purple-500/80 to-purple-600/80 backdrop-blur-xl border border-purple-400/30 rounded-full flex items-center justify-center hover:from-purple-400/80 hover:to-purple-500/80 transition-all"
                  icon={RotateCcw}
                  size="sm"
                  aria-label="retry"
                  onClick={onRetry}
                />
              )}
            </div>
          )}
        </div>
      </div>
    </div>
  )
}

export default H5TaskInfo