using Microsoft.Win32;
using System.IO;
using System.Windows;


namespace VideoConcat
{
    /// <summary>
    /// Video.xaml 的交互逻辑
    /// </summary>
    public partial class Video : Window
    {
        public string text = "";
        public Video()
        {
            InitializeComponent();
            Check_Folder();

        }

        private async void Button_Click(object sender, RoutedEventArgs e)
        {

            startButton.IsEnabled = false;
            await Task.Run(() =>
            {

                for (int i = 0; i <= 100; i++)
                {
                    System.Windows.Application.Current.Dispatcher.Invoke(() =>
                    {
                        processVideoBar.Dispatcher.Invoke(() =>
                        {
                            processVideoBar.Value = i;

                        });
                        outputTxt.Dispatcher.Invoke(new Action(() =>
                        {
                            WriteTxt("正在生成第" + i + "个视频");
                        }));
                    });
                    System.Threading.Thread.Sleep(50);
                }

                startButton.Dispatcher.Invoke(() =>
                {
                    startButton.IsEnabled = true;
                });

            });//ProcessVideo.RunTask(processVideoBar, startButton)
        }

        private void Check_Folder()
        {
            Boolean hasHead;
            Boolean hasTail;
            string currentPath = Directory.GetCurrentDirectory();
            DirectoryInfo? parentPathInfo = Directory.GetParent(currentPath);
            if (parentPathInfo == null)
            {
                WriteTxt("获取相关视频文件目录失败！");
                return;
            }
            WriteTxt(parentPathInfo.FullName);
            try
            {

                DirectoryInfo dirD = parentPathInfo as DirectoryInfo;
                FileSystemInfo[] folders = dirD.GetDirectories();//获取文件夹下所有文件和文件夹  
                                                                 //对单个FileSystemInfo进行判断，如果是文件夹则进行递归操作  

                foreach (FileSystemInfo folder in folders)
                {
                    WriteTxt($"{folder.Name}");

                    if (folder.Name == "head")
                    {
                        hasHead = true;
                    }
                    if (folder.Name == "tail")
                    {
                        hasTail = true;
                    }
                }
                //if (hasHead)
                //{
                //    WriteTxt("存在head文件夹");
                //}
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return;
            }
        }

        private void WriteTxt(string str)
        {
            text += str + "\r\n";
            outputTxt.Text = text;
            scrowText.ScrollToEnd();
        }
    }
}