using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;

namespace KJD_Web.Utils
{
    public class HttpUtils
    {
        public static string WxApiPostResponse(string _url, string _data, string referer)
        {
            HttpWebResponse response = null;
            string result;
            try
            {
                string url = _url;
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

                request.KeepAlive = true;
                request.Headers.Set(HttpRequestHeader.CacheControl, "max-age=0");
                request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36";
                request.ContentType = "application/json";
                request.Accept = "*/*";
                request.Referer = referer;
                request.Headers.Set(HttpRequestHeader.AcceptEncoding, "gzip, deflate, br, zstd");
                request.Headers.Set(HttpRequestHeader.AcceptLanguage, "zh-CN,zh;q=0.9");

                request.Method = "POST";
                request.ServicePoint.Expect100Continue = false;

                string body = _data;
                byte[] postBytes = System.Text.Encoding.UTF8.GetBytes(body);
                request.ContentLength = postBytes.Length;
                Stream stream = request.GetRequestStream();
                stream.Write(postBytes, 0, postBytes.Length);
                stream.Close();

                response = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                if (ex.Status == WebExceptionStatus.ProtocolError)
                {
                    response = (HttpWebResponse)ex.Response;
                    result = ReadResponse(response);
                    return result;
                }
                else return ex.Message;
            }
            catch (Exception e)
            {
                if (response != null) response.Close();
                return e.Message;
            }
            result = ReadResponse(response);
            return result;
        }

        public static string WxApiGetResponse(string _url, string referer)
        {
            HttpWebResponse response = null;
            string result;
            try
            {
                string url = _url;
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

                request.KeepAlive = true;
                request.Headers.Set(HttpRequestHeader.CacheControl, "max-age=0");
                request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36";
                request.ContentType = "application/json";
                request.Accept = "*/*";
                request.Referer = referer;
                request.Headers.Set(HttpRequestHeader.AcceptEncoding, "gzip, deflate, br, zstd");
                request.Headers.Set(HttpRequestHeader.AcceptLanguage, "zh-CN,zh;q=0.9");

                response = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                if (ex.Status == WebExceptionStatus.ProtocolError)
                {
                    response = (HttpWebResponse)ex.Response;
                    result = ReadResponse(response);
                    return result;
                }
                else return ex.Message;
            }
            catch (Exception e)
            {
                if (response != null) response.Close();
                return e.Message;
            }
            result = ReadResponse(response);
            return result;
        }

        public static string e57GetResponse(string _url, string referer)
        {
            HttpWebResponse response = null;
            string result;
            try
            {
                string url = _url;

                HttpWebRequest request;
                if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
                {
                    ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
                    ServicePointManager.SecurityProtocol =
                    ServicePointManager.SecurityProtocol | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
                    request = WebRequest.Create(url) as HttpWebRequest;
                    request.ProtocolVersion = HttpVersion.Version10;
                }
                else
                    request = (HttpWebRequest)WebRequest.Create(url);

                request.KeepAlive = true;
                request.Headers.Add("sec-ch-ua", @"""Not(A:Brand"";v=""8"", ""Chromium"";v=""144"", ""Google Chrome"";v=""144""");
                request.Headers.Add("sec-ch-ua-mobile", @"?0");
                request.Headers.Add("sec-ch-ua-platform", @"""Windows""");
                request.Headers.Add("Upgrade-Insecure-Requests", @"1");
                request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36";
                request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7";
                request.Headers.Add("Sec-Fetch-Site", @"none");
                request.Headers.Add("Sec-Fetch-Mode", @"navigate");
                request.Headers.Add("Sec-Fetch-User", @"?1");
                request.Headers.Add("Sec-Fetch-Dest", @"document");
                request.Headers.Set(HttpRequestHeader.AcceptEncoding, "gzip, deflate");
                request.Headers.Set(HttpRequestHeader.AcceptLanguage, "zh-CN,zh;q=0.9");

                response = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                if (ex.Status == WebExceptionStatus.ProtocolError)
                {
                    response = (HttpWebResponse)ex.Response;
                    result = ReadResponse(response);
                    return result;
                }
                else return ex.Message;
            }
            catch (Exception e)
            {
                if (response != null) response.Close();
                return e.Message;
            }
            result = ReadResponse(response);
            return result;
        }

        public static string ReadResponse(HttpWebResponse response)
        {
            using (Stream responseStream = response.GetResponseStream())
            {
                Stream streamToRead = responseStream;
                if (response.ContentEncoding.ToLower().Contains("gzip"))
                {
                    streamToRead = new GZipStream(streamToRead, CompressionMode.Decompress);
                }
                else if (response.ContentEncoding.ToLower().Contains("deflate"))
                {
                    streamToRead = new DeflateStream(streamToRead, CompressionMode.Decompress);
                }

                using (StreamReader streamReader = new StreamReader(streamToRead, Encoding.UTF8))
                {
                    return streamReader.ReadToEnd();
                }
            }
        }
    }
}