using HtmlAgilityPack;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;

namespace New_Spider
{
    public class HtmlAgHelper
    {

        /// <summary>
        /// 阳光高考完数据解析
        /// </summary>
        public void HtmlCreatePageData()
        {
            HtmlWeb webClient = new HtmlWeb();
            ITextGen textgen = new ITextGen();
            //for (int k = 0; k <= 2800; k += 20)
            for (int k = 0; k <= 1; k += 20)
            {
                var jsonobjs = new List<JsonObj>();

                HtmlDocument doc = webClient.Load(string.Format("https://gaokao.chsi.com.cn/sch/search--ss-on,option-qg,searchType-1,start-{0}.dhtml", k));
                var rootNode = doc.DocumentNode;
                HtmlNodeCollection categoryNodeList = rootNode.SelectNodes("//*[@id=\"app-yxk-sch-list\"]/div[1]/div[*]");
                int categoryIndex = 0;
                foreach (var items in categoryNodeList)//
                {
                    Thread.Sleep(500);
                    categoryIndex++;

                    var item = items.SelectSingleNode("//*[@id=\"app-yxk-sch-list\"]/div[1]/div[" + categoryIndex + "]/div[1]/div/a");

                    Console.WriteLine(string.Format("item: a:https://gaokao.chsi.com.cn/{0};name:{1}", item.Attributes["href"].Value, item.InnerText));

                    HtmlUniversityAgResolve(doc, webClient, item, item.InnerText.Trim(),jsonobjs);
                }
                // Console.WriteLine(k);
                Thread.Sleep(1000);
                textgen.GenJson(Newtonsoft.Json.JsonConvert.SerializeObject(jsonobjs), k.ToString());
            }
        }


        public class JsonObj
        {
            public string id { get; set; }
            public string name { get; set; }
            public string description { get; set; }

        }


        /// <summary>
        /// 解析院校信息页面
        /// </summary>
        /// <param name="htmldoc"></param>
        /// <param name="htmlWeb"></param>
        /// <param name="htmlNode"></param>
        /// <param name="name"></param>
        public void HtmlUniversityAgResolve(HtmlDocument htmldoc, HtmlWeb htmlWeb, HtmlNode htmlNode,string name, List<JsonObj> jsons)
        {
            htmldoc = htmlWeb.Load(string.Format("https://gaokao.chsi.com.cn/{0}", htmlNode.Attributes["href"].Value));

            var rootNode = htmldoc.DocumentNode;
            HtmlNodeCollection items = rootNode.SelectNodes("/html/body/div[1]/div[3]/div/a[2]");

            if (items != null)
            {
                foreach (var item in items)//
                {
                    Thread.Sleep(500);
                    try
                    {
                        HtmlUniversityDescriptionResolve(htmldoc, htmlWeb, item.Attributes["href"].Value, name, jsons);
                    }
                    catch (Exception e)
                    {

                    }

                }
            }


        }


        /// <summary>
        /// 解析院校描述模块
        /// </summary>
        /// <param name="htmldoc"></param>
        /// <param name="htmlWeb"></param>
        /// <param name="htmlNode"></param>
        /// <param name="name"></param>
        public void HtmlUniversityDescriptionResolve(HtmlDocument htmldoc, HtmlWeb htmlWeb, string url, string name, List<JsonObj> jsons)
        {
            var href = url;
            htmldoc = htmlWeb.Load(string.Format("https://gaokao.chsi.com.cn/{0}", href));//院校页面
            var rootNode = htmldoc.DocumentNode;
            HtmlNodeCollection items = rootNode.SelectNodes("/html/body/div[1]/div[4]/div[3]");
            if (items != null)
            {
                foreach (var item in items)//
                {
                    var description = item.InnerText; //院校简介

                    jsons.Add(new JsonObj()
                    {
                        description = description,
                        name = name,
                        id = DateTime.Now.ToString("yyyyMMHHddmmssfff"),
                    });
                }
            }
        }




        public void HtmlAg()
        {
            HtmlWeb webClient = new HtmlWeb();
            HtmlDocument doc = webClient.Load("https://gaokao.chsi.com.cn/sch/search--ss-on,option-qg,searchType-1,start-0.dhtml");
            var rootNode = doc.DocumentNode;
            HtmlNodeCollection categoryNodeList = rootNode.SelectNodes("//*[@id=\"app-yxk-sch-list\"]/div[1]/div[*]");
            int categoryIndex = 0;
            foreach (var items in categoryNodeList)//
            {

                categoryIndex++;

                var item = items.SelectSingleNode("//*[@id=\"app-yxk-sch-list\"]/div[1]/div[" + categoryIndex + "]/div[1]/div/a");
                Console.WriteLine(string.Format("item: a:https://gaokao.chsi.com.cn/{0};name:{1}", item.Attributes["href"].Value, item.InnerText));


                doc = webClient.Load(string.Format("https://gaokao.chsi.com.cn/{0}", item.Attributes["href"].Value));

                var rootNode2 = doc.DocumentNode;
                HtmlNodeCollection categoryNodeList2 = rootNode2.SelectNodes("/html/body/div[1]/div[3]/div/a[2]");

                foreach (var itemsd in categoryNodeList2)//
                {

                    var href = itemsd.Attributes["href"].Value;

                    doc = webClient.Load(string.Format("https://gaokao.chsi.com.cn/{0}", href));//院校页面

                    var rootNode3 = doc.DocumentNode;

                    HtmlNodeCollection categoryNodeList3 = rootNode3.SelectNodes("/html/body/div[1]/div[4]/div[3]");

                    foreach (var itemsd3 in categoryNodeList3)//
                    {
                        var contexts = itemsd3.InnerText; //院校简介

                    }
                }
            }



        }



    }
}