'use client'

import type { BatchUploadStatus, BatchFileItem } from './upload-types'
import { formatSpeed, calculateRemainingTime } from './upload-utils'

interface UploadProgressProps {
  uploading: boolean
  isBatchMode: boolean
  batchUploadStatus: BatchUploadStatus | null
  batchFiles?: BatchFileItem[] // 用于计算实际文件大小
  uploadProgress: number
  uploadSpeed: number
  isProcessing: boolean
  onCancel: () => void
}

export default function UploadProgress({
  uploading,
  isBatchMode,
  batchUploadStatus,
  batchFiles,
  uploadProgress,
  uploadSpeed,
  isProcessing,
  onCancel,
}: UploadProgressProps) {
  if (!uploading) return null

  if (isBatchMode && batchUploadStatus) {
    const { currentFileIndex, totalFiles, currentFileName, currentFileProgress, currentFileSpeed, fileStatuses } = batchUploadStatus
    const completedFiles = fileStatuses.filter(s => s.status === 'done').length
    const failedFiles = fileStatuses.filter(s => s.status === 'failed').length
    const processingFiles = fileStatuses.filter(s => s.status === 'uploading' || s.status === 'processing' || s.status === 'pending')

    // 只显示正在处理/等待中的文件，已完成的文件不显示（避免队列过长）
    const visibleFileStatuses = fileStatuses.filter(s => s.status !== 'done')

    // 计算剩余字节数（使用实际文件大小）
    const remainingBytes = fileStatuses
      .slice(currentFileIndex)
      .reduce((sum, status, idx) => {
        const fileStatus = batchUploadStatus.fileStatuses[currentFileIndex + idx]
        if (!fileStatus) return sum

        // 从batchFiles中查找对应的文件大小
        const batchFile = batchFiles?.find(bf => bf.file.name === fileStatus.fileName)
        const fileSize = batchFile?.file.size || 0

        return sum + (fileSize * (100 - status.progress) / 100)
      }, 0)

    return (
      <div className="space-y-4">
        {/* 整体进度 */}
        <div className="space-y-2">
          <div className="flex items-center justify-between text-sm">
            <span className="text-gray-700 dark:text-gray-300">
              整体进度: {completedFiles}/{totalFiles} 完成
              {failedFiles > 0 && <span className="text-red-600 ml-2">({failedFiles} 失败)</span>}
            </span>
            <span className="text-gray-600 dark:text-gray-400">{uploadProgress}%</span>
          </div>
          <div className="w-full bg-gray-200 dark:bg-gray-700 rounded-full h-2">
            <div
              className="bg-blue-600 h-2 rounded-full transition-all duration-300"
              style={{ width: `${uploadProgress}%` }}
            />
          </div>
        </div>

        {/* 当前文件进度 */}
        <div className="border border-gray-200 dark:border-gray-700 rounded-apple p-3 space-y-2">
          <div className="flex items-center justify-between text-sm">
            <span className="text-gray-700 dark:text-gray-300 font-medium">
              当前文件 ({currentFileIndex + 1}/{totalFiles}): {currentFileName}
            </span>
            <span className="text-gray-600 dark:text-gray-400">{currentFileProgress}%</span>
          </div>
          <div className="w-full bg-gray-200 dark:bg-gray-700 rounded-full h-2">
            <div
              className="bg-green-600 h-2 rounded-full transition-all duration-300"
              style={{ width: `${currentFileProgress}%` }}
            />
          </div>
          {currentFileSpeed > 0 && (
            <div className="flex items-center justify-between text-xs text-gray-500 dark:text-gray-400">
              <span>速度: {formatSpeed(currentFileSpeed)}</span>
              <span>剩余时间: {calculateRemainingTime(remainingBytes, currentFileSpeed)}</span>
            </div>
          )}
        </div>

        {/* 文件状态列表 - 只显示正在处理/等待中/失败的文件 */}
        {visibleFileStatuses.length > 0 && (
          <div className="space-y-3">
            <div className="text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wide">
              队列 ({processingFiles.length} 个{failedFiles > 0 && `，${failedFiles} 个失败`})
            </div>
            <div className="max-h-60 overflow-y-auto space-y-2">
              {visibleFileStatuses.map((status, idx) => (
                <div
                  key={idx}
                  className={`flex items-center justify-between text-sm p-2 rounded ${
                    status.status === 'failed'
                      ? 'bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800'
                      : 'bg-gray-50 dark:bg-gray-800'
                  }`}
                >
                  <div className="flex items-center space-x-2 flex-1 min-w-0">
                    {status.status === 'done' && <span className="text-green-600">✓</span>}
                    {status.status === 'failed' && <span className="text-red-600">✗</span>}
                    {status.status === 'uploading' && <span className="text-blue-600 animate-spin">⟳</span>}
                    {status.status === 'processing' && <span className="text-yellow-600">⏳</span>}
                    {status.status === 'pending' && <span className="text-gray-400">○</span>}
                    <span className="text-gray-700 dark:text-gray-300 truncate" title={status.fileName}>
                      {status.fileName}
                    </span>
                  </div>
                  <div className="flex items-center space-x-2">
                    <span className="text-gray-600 dark:text-gray-400 text-xs">{status.progress}%</span>
                    {status.error && (
                      <span className="text-red-600 text-xs truncate max-w-[200px]" title={status.error}>
                        {status.error.length > 20 ? status.error.substring(0, 20) + '...' : status.error}
                      </span>
                    )}
                  </div>
                </div>
              ))}
            </div>
          </div>
        )}

        {/* 所有文件都完成后的提示 */}
        {visibleFileStatuses.length === 0 && completedFiles === totalFiles && (
          <div className="text-center py-4 text-sm text-green-600 dark:text-green-400">
            ✓ 所有文件上传完成
          </div>
        )}

        <button
          type="button"
          onClick={onCancel}
          className="w-full btn-secondary"
        >
          取消上传
        </button>
      </div>
    )
  }

  // 单文件上传进度
  return (
    <div className="space-y-2">
      <div className="flex items-center justify-between text-sm">
        <span className="text-gray-700 dark:text-gray-300">
          {isProcessing ? '处理中...' : '上传中...'}
        </span>
        <span className="text-gray-600 dark:text-gray-400">{uploadProgress}%</span>
      </div>
      <div className="w-full bg-gray-200 dark:bg-gray-700 rounded-full h-2">
        <div
          className="bg-blue-600 h-2 rounded-full transition-all duration-300"
          style={{ width: `${uploadProgress}%` }}
        />
      </div>
      {uploadSpeed > 0 && !isProcessing && (
        <div className="text-xs text-gray-500 dark:text-gray-400">
          速度: {formatSpeed(uploadSpeed)}
        </div>
      )}
      <button
        type="button"
        onClick={onCancel}
        className="w-full btn-secondary"
      >
        取消上传
      </button>
    </div>
  )
}