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.Management;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace OnlineUpdate
{
    public partial class InstallFileForm : Form
    {
        List<FileInfo> infos;
        Client client;
        public InstallFileForm(List<FileInfo> infos, Client client)
        {
            InitializeComponent();
            this.client = client;
            this.infos = infos;
        }

        public void Kill(string filePath)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(filePath)) return;
                var wmiQueryString = "SELECT ProcessId, ExecutablePath, CommandLine FROM Win32_Process";
                using (var searcher = new ManagementObjectSearcher(wmiQueryString))
                using (var results = searcher.Get())
                {
                    var query = from p in Process.GetProcesses()
                                join mo in results.Cast<ManagementObject>()
                                on p.Id equals (int)(uint)mo["ProcessId"]
                                select new
                                {
                                    Process = p,
                                    Path = (string)mo["ExecutablePath"],
                                    CommandLine = (string)mo["CommandLine"],
                                };

                    foreach (var item in query)
                    {
                        if (filePath == item.Path)
                        {
                            item.Process.Kill();
                            item.Process.WaitForExit();
                        }
                    }
                }
            }
            catch (Exception ex)
            { }
        }

        private bool IsClose = false;
        private void InstallFileForm_Load(object sender, EventArgs e)
        {
            var method = new Action(delegate ()
            {
                try
                {
                    int i = 1;
                    Thread.Sleep(2000);

                    //for (int z = 0; z < 4; z++)
                    //{
                    //    try
                    //    {
                    //        Process[] MyProcesses = Process.GetProcesses();
                    //        foreach (var MyProcess in MyProcesses)
                    //        {
                    //            try
                    //            {
                    //                if (MyProcess.MainModule.FileName.ToUpper().Trim() == Program.ExeName.ToUpper().Trim())
                    //                {
                    //                    MyProcess.Kill();
                    //                    MyProcess.WaitForExit();
                    //                }
                    //            }
                    //            catch (Exception)
                    //            { }
                    //        }

                    //        var process = Process.GetProcesses().FirstOrDefault(f => f.MainModule.FileName.ToUpper().Trim() == Program.ExeName.ToUpper().Trim());
                    //        if (process == null) break;
                    //        Thread.Sleep(z == 0 ? 3000 : 500);
                    //    }
                    //    catch (Exception)
                    //    { }
                    //}


                    Kill(Program.ExeName);

                    foreach (var item in infos)
                    {
                        this.Invoke(new Action(delegate
                        {
                            this.label1.Text = $"正在安装第{i}个文件包...(共{infos.Count}个)";
                        }));
                        this.client.InstallFile(item);
                        Application.DoEvents();
                    }
                    this.Invoke(new Action(delegate
                    {
                        this.label1.Text = $"安装完成！";
                        IsClose = true;
                        this.Close();
                    }));
                }
                catch (Exception ex)
                {
                    this.Invoke(new Action(delegate
                    {
                        this.label1.Text = $"安装失败：" + ex.Message;
                    }));
                }
                finally
                {
                    IsClose = true;
                }
            });
            method.BeginInvoke(null, null);
        }

        private void InstallFileForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            try
            {
                if (!IsClose)
                {
                    MessageBox.Show("安装还未结束,不能中途退出！", "友情提醒", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    e.Cancel = true;
                }
            }
            catch (Exception)
            { }
        }
    }
}