const utils = require('./utils');
const fs = require('fs');




var baseUrl = 'https://pic.netbian.com/4kmeinv/'
var pageArr = []
var pageIndex = 0

var currentPageArr = []
var currentPageInfoId = 0

for (var i = 1; i <= 66; i++) {
    pageArr.push(`${i == 1 ? baseUrl : `${baseUrl}index_${i}.html`}`)
}

page(pageArr[pageIndex])

// 获取当前 pageIndex 的所有详情页连接构成数组
async function page(url) {
    let $ = await utils.html(url);
    $(".slist ul li").each(function (i,v) {
        currentPageArr.push(
            `https://pic.netbian.com${ $(this).find("a").attr("href") }`
        )
    })

    info(currentPageArr[currentPageInfoId])
}


async function info(url) {
   let $ = await utils.html(url);
   let bigImg = `https://pic.netbian.com${$(".photo-pic img").attr("src")}`;
    dowmImg(bigImg)
}

async function dowmImg(url) {
    let buff = await utils.html(url,"img");
    fs.writeFileSync(`img/${Math.random() * 99999999}.jpg`,buff);
    currentPageInfoId +=1;

    if (currentPageInfoId < currentPageArr.length) {
        setTimeout(() => {
            info(currentPageArr[currentPageInfoId])
        },1500)
    } else {
        pageIndex += 1;
        if (pageIndex < pageArr.length) {
            currentPageInfoId = 0
            currentPageArr = []

            page(pageArr[pageIndex])
        }
    }
}