using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Diagnostics;

using System.Drawing;

using System.IO;

using System.Linq;

using System.Net;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

using System.Windows.Forms;

using ICSharpCode.SharpZipLib.Zip;

using UpdateDevForm.Response;

namespace UpdateDevForm

{

    public partial class UpdateForm : Form

    {

        public readonly string UpdateFiles = Path.Combine(Application.StartupPath, "update");//解压到的本机地址

        public string CheckUpdateURL;  //更新包所在网络地址（服务器端的路径）

        public string resourcetype; //安装方式 ：重新安装 0，文件覆盖 1

        public string resourcename;  //文件名称带后缀名

        public UpdateForm()

        {

            InitializeComponent();

        }

        private void UpdateForm_Load(object sender, EventArgs e)

        {

            if (!UpdateHelper.IsConnectInternet())

            {

                MessageBox.Show("网络异常，请检查网络连接", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);

                Application.Exit();

            }

            ResponseResult<UpdateInfo> updateInfo = UpdateHelper.GetUpdateInfo("Windows_CSOnline");

            if (updateInfo == null)

            {

#if DEBUG

                UpdateHelper.StartKillProcess(System.IO.Path.Combine(@"E:\xx\xx\xx\\bin\Debug", @"xxx.exe"), "UpdateDevForm");

#else

                UpdateHelper.StartKillProcess(System.IO.Path.Combine(Application.StartupPath, @"xxx.exe"), "UpdateDevForm");

#endif

            }

            else

            {

                CheckForIllegalCrossThreadCalls = false;

                Thread t = new Thread(() =>

                {

                    if (!System.IO.Directory.Exists(UpdateFiles))

                    {

                        System.IO.Directory.CreateDirectory(UpdateFiles);

                    }

                    CheckUpdateURL = updateInfo.content.resourceUri.ToString();

                    resourcetype = updateInfo.content.resourceType;

                    resourcename = updateInfo.content.resourceName;

                    using (WebClient webClient = new WebClient())

                    {

                        try

                        {    //通过webclient下载服务器端的文件

                            webClient.DownloadFile(new Uri(CheckUpdateURL), UpdateFiles + "\\" + resourcename);

                        }

                        catch (WebException ex)

                        {

                            MessageBox.Show(ex.Message, "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Error);

                            Application.Exit();

                        }

                    }

                    if (int.Parse(resourcetype) == 1) //文件覆盖

                    {

                        bool ConverFileResult = ConverFile(UpdateFiles, resourcename);

                        if (!ConverFileResult)

                        {

                            MessageBox.Show("更新失败", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Error);

                            Application.Exit();

                        }

                    }

                    else if (int.Parse(resourcetype) == 0)  //重新安装

                    {

                        bool ReinstallResult = Reinstall(UpdateFiles + "\\" + resourcename);

                        if (!ReinstallResult)

                        {

                            MessageBox.Show("更新失败", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Error);

                            Application.Exit();

                        }

                    }

                    UpdateBLL updateBLL = new UpdateBLL();

                    int count = updateBLL.Update("Versions", updateInfo.content.version);

                    if (count > 0)

                    {

                    }

                    MessageBox.Show("更新成功！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

                    UpdateHelper.StartKillProcess("xxx.exe", "UpdateDevForm");

                });

                t.IsBackground = true;

                t.Start();

            }

        }

        /// <summary>

        /// 重新安装

        /// </summary>

        /// <param name="MsiFilesUrl"></param>

        /// <returns></returns>

        private bool Reinstall(string MsiFilesUrl)

        {

            this.Hide();

            Process UninstallProcess = new Process();  //卸载进程

            UninstallProcess.StartInfo.FileName = "msiexec";

            UninstallProcess.StartInfo.Arguments = "/x {2ED75D70-FC7F-469C-9F71-24CB3A4E923C}";

            UninstallProcess.Start();

            UninstallProcess.WaitForExit();

            if (UninstallProcess.ExitCode == 0)

            {

                Process installProcess = new Process();  //安装进程

                MessageBox.Show(MsiFilesUrl);

                installProcess.StartInfo.FileName = MsiFilesUrl;

                installProcess.StartInfo.Arguments = "";

                installProcess.Start();

                installProcess.WaitForExit();

                if (installProcess.ExitCode == 0)

                {

                    installProcess.Close();

                    return true;

                }

                else

                {

                    installProcess.Close();

                    return false;

                }

            }

            else

            {

                UninstallProcess.Close();

                return false;

            }

        }

        /// <summary>

        /// 文件覆盖

        /// </summary>

        /// <param name="zip_path">zip文件所在路径</param>

        /// <param name="resourcename">zip更新包文件名带后缀</param>

        /// <returns></returns>

        private bool ConverFile(string zip_path, string resourcename)

        {

            string filename = zip_path + "\\" + resourcename;

            if (!File.Exists(filename))

            {

                MessageBox.Show("下载更新包文件失败！");

                Application.Exit();

            }

            FastZip zip = new FastZip();

            zip.ExtractZip(filename, Application.StartupPath, "");

            #region  .NET Framework下此方法不能覆盖文件  .NET Core下此方法可以覆盖使用

            // 引入 System.IO.Compression;

            // ZipFile.ExtractToDirectory(filename, Application.StartupPath);

            #endregion

            if (File.Exists(filename))

            {

                File.Delete(filename);//覆盖完成之后删除zip文件

                return true;

            }

            return false;

        }

    }

}