import { useDayjs } from "@/composables/useDayjs";
import type { FileUploadDestination,LessonTask  } from "@/types/api/lesson";

export const extractLessonStage = (lesson: LessonTask) => {
  const currentStep = lesson?.progressStatus || 0;
  const stages = {
    script_creating: currentStep >= 1,  // 脚本制作
    script_review: currentStep >= 2,    // 脚本审核
    script_confirmed: currentStep >= 3,  // 脚本确认
    video_creating: currentStep >= 4,    // 视频制作
    video_confirmed: currentStep >= 5,   // 视频确认
    step: 0,
  };
  stages.step = currentStep;
  return stages;
};

export const calcLessonProgress = (lesson: LessonTask) => {
  if (!lesson) return 0;
  
  // 根据 progressStatus 计算进度
  // 0-未开始, 1-脚本制作, 2-脚本审核, 3-脚本确认, 4-视频拍摄与制作, 5-视频确认
  switch (lesson.progressStatus) {
    case 5: // 视频确认
      return 100;
    case 4: // 视频拍摄与制作
      return 80;
    case 3: // 脚本确认
      return 60;
    case 2: // 脚本审核
      return 40;
    case 1: // 脚本制作
      return 20;
    case 0: // 未开始
    default:
      return 0;
  }
};

export const getLessonSteps = (lesson: LessonTask, simplify: boolean = false) => {
  const dayjs = useDayjs();
  const dateFormat = "YYYY-MM-DD HH:mm:ss";
  const progress = extractLessonStage(lesson);

  const formatTime = (timestamp?: number | null) => {
    if (!timestamp || isNaN(timestamp) || timestamp <= 0) return '-';
    const date = dayjs(timestamp * 1000);
    return date.isValid() ? date.format(dateFormat) : '-';
  };

  return [
    {
      title: progress.script_creating ? "脚本制作" : undefined,
      description: progress.script_creating
        ? simplify
          ? "已完成"
          : `已于 ${formatTime(lesson.scriptCreateTime)} 完成脚本制作`
        : "开始制作脚本",
    },
    {
      title: progress.script_review ? "脚本审核" : undefined,
      description: progress.script_review
        ? simplify
          ? "已完成"
          : `已于 ${formatTime(lesson.scriptReviewTime)} 完成脚本审核`
        : "提交脚本审核",
    },
    {
      title: progress.script_confirmed ? "脚本确认" : undefined,
      description: progress.script_confirmed
        ? simplify
          ? "已完成"
          : `已于 ${formatTime(lesson.scriptConfirmTime)} 完成脚本确认`
        : "确认脚本内容",
    },
    {
      title: progress.video_creating ? "视频拍摄制作" : undefined,
      description: progress.video_creating
        ? simplify
          ? "已完成"
          : `已于 ${formatTime(lesson.videoCreateTime)} 完成拍摄制作`
        : "视频拍摄制作",
    },
    {
      title: progress.video_confirmed ? "视频确认" : undefined,
      description: progress.video_confirmed
        ? simplify
          ? "已完成"
          : `已于 ${formatTime(lesson.videoConfirmTime)} 完成视频确认`
        : "确认视频内容",
    },
  ];
};