using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.IO;

using Newtonsoft.Json;
using HXX.Scanner.Biz.Socket;
using HXX.Scanner.Common;

namespace HXX.Scanner.Biz
{
    /// <summary>
    /// 版本升级相关
    /// </summary>
    public class biz_version
    {
        /// <summary>
        /// 检测是否需要升级
        /// </summary>
        /// <returns></returns>
        public async static Task<response_http_updateInfo> check()
        {
            return await Task.Run(() =>
            {
                try
                {
                    return get_version_info();
                }
                catch (Exception ee)
                {
                    LogManager.WriteLog(ee);
                    return null;
                }
            });
        }

        /// <summary>
        /// 向服务器发起升级询问
        /// </summary>
        /// <returns></returns>
        private static response_http_updateInfo get_version_info()
        {
            //var url = "http://client.test.jkydata.cn/api/scanner/upgradeInfo?currentVersion=" + ConfigManager.GetConfig("appVersion");
            //var url = config_manager.Get("apiUrlBase") + "api/scanner/upgradeInfo?currentVersion=" + ConfigManager.GetConfig("appVersion");
            var url= config_environment.url_base + "api/scanner/upgradeInfo?currentVersion=" + ConfigManager.GetConfig("appVersion");

            var result = http_helper.Get(url);

            var entity = JsonConvert.DeserializeObject<response_http_updateInfo>(result);

            return entity;
        }

        /// <summary>
        /// 启动启动器，由启动器来复制和重启主程序
        /// </summary>
        /// <param name="fileName"></param>
        public static void start_starter(string fileName)
        {
            Process proc = new Process();
            //proc.StartInfo.Arguments = strCommandline;
            proc.StartInfo.UseShellExecute = false;
            proc.StartInfo.CreateNoWindow = true;
            proc.StartInfo.FileName = fileName;
            //proc.StartInfo.RedirectStandardInput = true;
            //proc.StartInfo.RedirectStandardOutput = true;
            //proc.StartInfo.RedirectStandardError = true;

            proc.Start();
        }

        /// <summary>
        /// 保存临时升级信息，方便重启后更新本地版本信息，因为重启成功才表示升级真正成功
        /// </summary>
        /// <param name="version"></param>
        public static void write_updateInfo(response_http_updateInfo version)
        {
            try
            {
                var file = System.Windows.Forms.Application.StartupPath + @"\updateInfo.txt";
                var txt = JsonConvert.SerializeObject(version);

                if (File.Exists(file))
                {
                    File.Delete(file);
                }

                using(StreamWriter sw=new StreamWriter(file))
                {
                    sw.Write(txt);
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);
            }
        }

        /// <summary>
        /// 读取临时升级信息，更新本地版本信息
        /// </summary>
        /// <returns></returns>
        public static bool read_updateInfo()
        {
            bool result = false;

            try
            {
                var file = System.Windows.Forms.Application.StartupPath + @"\updateInfo.txt";
                var txt = string.Empty;              

                if (File.Exists(file))
                {
                    using (StreamReader sr = new StreamReader(file))
                    {
                        txt = sr.ReadToEnd();
                    }
                }

                if (!string.IsNullOrEmpty(txt))
                {
                    var entity = JsonConvert.DeserializeObject<response_http_updateInfo>(txt);

                    if (entity != null)
                    {
                        if (!string.IsNullOrEmpty(entity.data.appVersion))
                        {                            
                            ConfigManager.SetConfig("appVersion", entity.data.appVersion);

                            File.Delete(file);

                            result = true;
                        }
                    }
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);
            }

            return result;
        }
    }
}