using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace Update
{
    static class Program
    {
        public static string softName = "";
        public static int oldVersion = 0;
        public static int newVersion = 0;
        public static string updateUrl = "";
        public static List<string> updateFileUrls = new List<string>();
        public static int progress = 0;

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            if (args.Length > 0)
            {
                try
                {
                    var arr = args[0].TrimStart('-').Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
                    if (arr.Length > 3)
                    {
                        softName = arr[0];
                        oldVersion = Convert.ToInt32(arr[1]);
                        newVersion = Convert.ToInt32(arr[2]);
                        updateUrl = arr[3];

                        if (oldVersion == 0 || string.IsNullOrEmpty(softName) || string.IsNullOrEmpty(updateUrl))
                            return;

                        // 如果有新版本，就继续升级
                        if (newVersion > oldVersion)
                        {
                            //Application.Current.Shutdown(); // 强制升级

                            Application.EnableVisualStyles();
                            Application.SetCompatibleTextRenderingDefault(false);
                            Application.Run(new MainForm());
                        }
                        // 仍然删除旧版数据防止残留
                        if (File.Exists("UpdateConfig.ini"))
                            File.Delete("UpdateConfig.ini");
                        return;
                    }
                }
                catch (Exception ex) { }
            }

            if (File.Exists("UpdateConfig.ini"))
            {
                try
                {
                    var text = File.ReadAllText("UpdateConfig.ini");
                    File.Delete("UpdateConfig.ini");

                    var arr = text.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
                    if (arr.Length > 3)
                    {
                        softName = arr[0];
                        oldVersion = Convert.ToInt32(arr[1]);
                        newVersion = Convert.ToInt32(arr[2]);
                        updateUrl = arr[3];

                        if (oldVersion == 0 || string.IsNullOrEmpty(softName) || string.IsNullOrEmpty(updateUrl))
                            return;

                        if (newVersion > oldVersion)
                        {
                            //Application.Current.Shutdown(); // 强制升级

                            Application.EnableVisualStyles();
                            Application.SetCompatibleTextRenderingDefault(false);
                            Application.Run(new MainForm());
                        }
                    }
                }
                catch (Exception ex) { }
            }
        }

        //public static string HttpRequestPost(string url, string postData, string cookies = "", string codeType = "utf-8", string accept = "", string contentType = "")
        //{
        //    HttpWebResponse response = null;
        //    string result;
        //    try
        //    {
        //        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        //        request.Method = "POST";
        //        request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
        //        if (!string.IsNullOrEmpty(accept))
        //            request.Accept = accept;
        //        request.ContentType = "application/x-www-form-urlencoded; charset=" + codeType;
        //        if (!string.IsNullOrEmpty(contentType))
        //            request.ContentType = contentType;

        //        request.Referer = url;
        //        request.AllowAutoRedirect = false;
        //        if (!string.IsNullOrEmpty(cookies))
        //            request.Headers.Set(HttpRequestHeader.Cookie, cookies);

        //        byte[] byteData = Encoding.GetEncoding(codeType).GetBytes(postData);
        //        request.ContentLength = byteData.Length;
        //        using (Stream requestStream = request.GetRequestStream())
        //        {
        //            requestStream.Write(byteData, 0, byteData.Length);
        //        }

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

        /// <summary>
        /// 获取json中的int值
        /// </summary>
        /// <param name="html"></param>
        /// <param name="reg"></param>
        /// <returns></returns>
        //public static int GetIntJson(ref string html, string reg)
        //{
        //    string temp = GetMatchRegexString(html, @"['""]" + reg + @"['""][\s]*:[\s]*['""]([^']+?)['""]");
        //    if (string.IsNullOrEmpty(temp))
        //        temp = GetMatchRegexString(html, @"['""]" + reg + @"['""][\s]*:[\s]*([\d-]+)");
        //    int i;
        //    if (int.TryParse(temp, out i))
        //        return i;
        //    return 0;
        //}

        /// <summary>
        /// 获取字符串
        /// </summary>
        /// <param name="html"></param>
        /// <param name="reg"></param>
        /// <returns></returns>
        //public static string GetStringJson(ref string html, string reg)
        //{
        //    string temp = GetMatchRegexString(html, @"['""]" + reg + @"['""][\s]*:[\s]*['""]([^']+?)['""]");
        //    if (string.IsNullOrEmpty(temp))
        //        temp = GetMatchRegexString(html, @"['""]" + reg + @"['""][\s]*:[\s]*([\d]+)");
        //    if (!string.IsNullOrEmpty(temp) && temp.Contains("\""))
        //        temp = temp.Substring(0, temp.IndexOf("\""));
        //    if (!string.IsNullOrEmpty(temp) && temp.Contains("'"))
        //        temp = temp.Substring(0, temp.IndexOf("'"));
        //    return temp;
        //}

        /// <summary>
        /// 返回单个正则匹配项
        /// </summary>
        /// <param name="sourceString"></param>
        /// <param name="RegexString"></param>
        /// <returns></returns>
        //public static string GetMatchRegexString(string sourceString, string RegexString)
        //{
        //    if (!string.IsNullOrEmpty(sourceString))
        //    {
        //        MatchCollection mc = Regex.Matches(sourceString, RegexString, RegexOptions.IgnoreCase);
        //        if (mc.Count > 0)
        //        {
        //            return mc[0].Groups[1].Value.ToString();
        //        }
        //    }
        //    return null;
        //}

        /// <summary>
        /// 下载文件
        /// </summary>
        /// <param name="Urlstring">下载地址</param>
        /// <param name="FilePath">保存目录</param>
        /// <returns></returns>
        public static bool DownloadFile(string Urlstring, string FilePath)
        {
            try
            {
                WebClientUtils webClient = new WebClientUtils();
                webClient.Timeout = 1200; // 20分钟
                if (File.Exists(FilePath))
                    File.Delete(FilePath);
                webClient.DownloadProgressChanged += WebClient_DownloadProgressChanged;
                var uri = new Uri(Urlstring);
                webClient.DownloadFileAsync(uri, FilePath);
                return true;
            }
            catch (Exception ex)
            {
                return false;
            }
        }

        private static void WebClient_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
        {
            progress = e.ProgressPercentage;
        }
    }
}