// 列表项数据类型
export type ListItemData = {
  id: number,
  type: number,
  title: string,
  desc: string,
  author: string,
  timestamp: number,
  image: string,
  images: string[],
  gridImages: string[],
  rating: number,
  videoUrl: string,
  videoPoster: string,
  playCount: number,
  likeCount: number
}

// 预生成4000条数据
function generateData(): ListItemData[] {
  const result: ListItemData[] = []
  const baseTime = 1705000000000 // 固定基准时间戳

  for (let i = 0; i < 4000; i++) {
    const type = (i % 3) + 1
    const idx = i + 1

    // 生成3张图片URL - 使用不同颜色和文字标识
    const images: string[] = []
    images.push(`https://web-ext-storage.dcloud.net.cn/hello-uni-app-x/waterflow-perf/150x200/3498db/white/T${type}-${idx}-A.webp`)
    images.push(`https://web-ext-storage.dcloud.net.cn/hello-uni-app-x/waterflow-perf/150x200/e74c3c/white/T${type}-${idx}-B.webp`)
    images.push(`https://web-ext-storage.dcloud.net.cn/hello-uni-app-x/waterflow-perf/150x200/2ecc71/white/T${type}-${idx}-C.webp`)

    // 生成9张九宫格图片 (虽然不用了，但为了类型兼容还是保留空数组或者生成一点防止报错，mock data里类型定义有这个字段)
    const gridImages: string[] = []

    const item: ListItemData = {
      id: i,
      type: type,
      title: `#${idx} ${type == 1 ? '单图' : type == 2 ? '三图' : '视频'}`,
      desc: `第${idx}条数据内容摘要，测试长文本显示效果。这里多加一点文字让它看起来更长一些。`,
      author: `User-${idx}`,
      timestamp: baseTime - i * 3600000,
      image: `https://web-ext-storage.dcloud.net.cn/hello-uni-app-x/waterflow-perf/120x120/9b59b6/white/T${type}-${idx}.webp`,
      images: images,
      gridImages: gridImages,
      rating: Math.floor(Math.random() * 5) + 1,
      videoUrl: (i % 2 == 1) ? '/static/test-video/10second-demo.mp4' : 'https://web-ext-storage.dcloud.net.cn/uni-app-x/video/uts-5-16.mp4',
      videoPoster: `https://web-ext-storage.dcloud.net.cn/hello-uni-app-x/waterflow-perf/180x240/1abc9c/white/Video-${idx}.webp`,
      playCount: i * 100 + 500,
      likeCount: i * 10 + 50
    }
    result.push(item)
  }

  return result
}

let _mockListData: ListItemData[] | null = null
export function generateMockList() {
  if (_mockListData == null) {
    _mockListData = generateData()
  }
  return _mockListData!
}