develop202-migu_video/utils/fetchList.js

function delay(ms) {
  return new Promise(resolve => {
    setTimeout(resolve, ms)
  })
}

// 获取分类集合
async function cateList() {
  const resp = await fetch("https://program-sc.miguvideo.com/live/v2/tv-data/1ff892f2b5ab4a79be6e25b69d2f5d05").then(r => r.json())
  let liveList = resp.body.liveList
  // 热门内容重复
  liveList = liveList.filter(item => {
    return item.name != "热门"
  })

  // 央视作为首个分类
  liveList.sort((a, b) => {
    if (a.name === "央视") return -1;
    if (b.name === "央视") return 1
    return 0
  })

  return liveList
}

// 所有数据
async function dataList() {
  let cates = await cateList()

  for (let cate in cates) {
    try {
      const resp = await fetch("https://program-sc.miguvideo.com/live/v2/tv-data/" + cates[cate].vomsID).then(r => r.json())
      cates[cate].dataList = resp.body.dataList
    } catch (error) {
      cates[cate].dataList = [];
    }
  }

  // 去除重复节目
  cates = uniqueData(cates)
  // console.dir(cates, { depth: null })
  // console.log(cates)
  return cates
}

// 对data的dataList去重
function uniqueData(liveList) {

  const allItems = []
  // 提取全部dataList
  liveList.forEach(category => {
    category.dataList.forEach(program => {

      allItems.push({
        ...program,
        categoryName: category.name
      })
    })

  })

  // 使用set确保唯一
  const set = new Set()
  // 保存唯一的数据
  const uniqueItem = []

  allItems.forEach(item => {
    // set用来确定已经出现过
    if (!set.has(item.name)) {
      set.add(item.name)
      uniqueItem.push(item)
    }
  })

  const categoryMap = []

  // 清空原dataList内容
  liveList.forEach(live => {
    live.dataList = []
    categoryMap[live.name] = []
  })

  // 去除添加字段，根据分类填充内容
  uniqueItem.forEach(item => {
    const { categoryName, ...program } = item
    categoryMap[categoryName].push(program)
  })

  // liveList赋值
  liveList.forEach(live => {
    live.dataList = categoryMap[live.name]
  })

  return liveList
}

export { cateList, dataList, delay }