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






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

var currentPageArr = []
var currentPageInfoId = 0

//https://pic.netbian.com/4kdongman/
//https://pic.netbian.com/4kdongman/index_2.html
for (var i= 1; i<=2 ; i++){
    pageArr.push(`${ i==1  ?  baseUrl : `${baseUrl}index_${i}.html`}`)
}
console.log(pageArr);

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


// 获取当前 pageIndex 的所有详情页连接构成数组
async function page(url) {
    let $ = await utils.htlm(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.htlm(url);
    let bingImg =  `https://pic.netbian.com${$(".photo-pic img").attr("src")}`;
    dowImg(bingImg)
}
async function dowmImg (url) {
    let buff = await utils.htlm(url,"img");
    fs.writeFileSync(`img/${Math.random() * 9999999}.jpg`,buff);
    currentPageArr += 1;

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

            page(pageArr[pageIndex])
        }
    }

}