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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
using Tango.Core.Commands;
using Tango.FileSystem;
using Tango.FSE.Common;
using Tango.FSE.Common.Connection;
using Tango.FSE.Common.FileSystem;
using static Tango.SharedUI.Controls.NavigationControl;
namespace Tango.FSE.PPCConsole.ViewModels
{
public class FileSystemViewVM : FSEViewModel, INavigationViewModel
{
private FileSystemItem _currentItem;
public FileSystemItem CurrentItem
{
get { return _currentItem; }
set { _currentItem = value; RaisePropertyChangedAuto(); OnCurrentItemChanged(); }
}
private String _currentPath;
public String CurrentPath
{
get { return _currentPath; }
set { _currentPath = value; RaisePropertyChangedAuto(); }
}
private List<DriveItem> _drives;
public List<DriveItem> Drives
{
get { return _drives; }
set { _drives = value; RaisePropertyChangedAuto(); }
}
public ObservableCollection<FileSystemItem> SelectedItems { get; set; }
public ObservableCollection<FileSystemHandler> FileSystemHandlers { get; set; }
public RelayCommand NavigateCommand { get; set; }
public RelayCommand<FileSystemItem> OpenItemCommand { get; set; }
public RelayCommand BackCommand { get; set; }
public RelayCommand<String> NavigateSpecialFolderCommand { get; set; }
public RelayCommand<String> NavigateToFolderCommand { get; set; }
public RelayCommand<IList<FileSystemItem>> DeleteCommand { get; set; }
public RelayCommand<List<FileSystemItem>> DropCommand { get; set; }
public RelayCommand<List<DragItem>> DragCommand { get; set; }
public RelayCommand<FileSystemHandler> DeleteFileSystemHandlerCommand { get; set; }
public RelayCommand<FileSystemHandler> OpenFileSystemHandlerDestinationCommand { get; set; }
public RelayCommand<FileSystemHandler> RetryFailedFileSystemHandlerCommand { get; set; }
public FileSystemViewVM()
{
SelectedItems = new ObservableCollection<FileSystemItem>();
FileSystemHandlers = new ObservableCollection<FileSystemHandler>();
NavigateCommand = new RelayCommand(NavigateToCurrentPath);
OpenItemCommand = new RelayCommand<FileSystemItem>(OpenFileSystemItem);
BackCommand = new RelayCommand(NavigateBack, () => !(CurrentItem is FolderItem) || !(CurrentItem as FolderItem).IsRoot);
NavigateSpecialFolderCommand = new RelayCommand<string>(NavigateToSpecialFolder);
NavigateToFolderCommand = new RelayCommand<string>(async (x) => await Navigate(x));
DeleteCommand = new RelayCommand<IList<FileSystemItem>>(DeleteSelectedItems);
DragCommand = new RelayCommand<List<DragItem>>(OnItemsDraggedOut);
DeleteFileSystemHandlerCommand = new RelayCommand<FileSystemHandler>(DeleteFileSystemHandler);
OpenFileSystemHandlerDestinationCommand = new RelayCommand<FileSystemHandler>(OpenFileSystemHandlerDestination);
RetryFailedFileSystemHandlerCommand = new RelayCommand<FileSystemHandler>(RetryFailedFileSystemHandler);
}
private async void NavigateBack()
{
if (CurrentItem.Path.Length == 3)
{
await Navigate(null);
}
else
{
String parent = Path.GetDirectoryName(CurrentItem.Path);
await Navigate(parent);
}
}
public override void OnApplicationStarted()
{
base.OnApplicationStarted();
MachineProvider.MachineConnected += MachineProvider_MachineConnected;
}
public override void OnApplicationReady()
{
base.OnApplicationReady();
}
private async void MachineProvider_MachineConnected(object sender, MachineConnectedEventArgs e)
{
await Navigate(null);
}
private async void NavigateToCurrentPath()
{
await Navigate(CurrentPath);
}
private async void OpenFileSystemItem(FileSystemItem item)
{
if (item == null) return;
if (item.Type == FileSystemItemType.Folder || item.Type == FileSystemItemType.Drive)
{
await Navigate(item.Path);
}
else if (item.Type == FileSystemItemType.File)
{
//TODO: Download/Open file?...
}
}
private async void DeleteSelectedItems(IList<FileSystemItem> items)
{
if (items != null && items.Count > 0)
{
if (await NotificationProvider.ShowWarningQuestion("Are you sure you want to delete the selected files/folders?", "DELETE"))
{
//TODO: Delete items
}
}
}
private async void OnItemsDraggedOut(List<DragItem> items)
{
foreach (var item in items.Where(x => x.FileSystemItem.Type != FileSystemItemType.Drive))
{
Debug.WriteLine($"Dropped out: {item.FileSystemItem.Name} => {item.Destination}");
var handler = await FileSystemProvider.Download(item.FileSystemItem, item.Destination);
FileSystemHandlers.Insert(0, handler);
}
}
private async void DeleteFileSystemHandler(FileSystemHandler handler)
{
if (handler.Status != FileSystemHandlerStatus.Completed && handler.Status != FileSystemHandlerStatus.Failed)
{
if (await NotificationProvider.ShowWarningQuestion($"This item is currently {handler.Status}. Do you wish to abort and delete this item?"))
{
try
{
handler.Abort();
}
catch { }
FileSystemHandlers.Remove(handler);
}
}
else
{
FileSystemHandlers.Remove(handler);
}
}
private void OpenFileSystemHandlerDestination(FileSystemHandler handler)
{
String destination = String.Empty;
if (File.Exists(handler.Destination) || Directory.Exists(handler.Destination))
{
destination = handler.Destination;
Process.Start("explorer.exe", string.Format("/select,\"{0}\"", destination));
}
else
{
destination = Path.GetDirectoryName(handler.Destination);
Process.Start("explorer.exe", destination);
}
}
private async void RetryFailedFileSystemHandler(FileSystemHandler handler)
{
if (handler.Status == FileSystemHandlerStatus.Failed)
{
var newHandler = await FileSystemProvider.Download(handler.FileSystemItem, Path.GetDirectoryName(handler.Destination));
FileSystemHandlers.Replace(handler, newHandler);
}
}
private async void NavigateToSpecialFolder(string folder)
{
Environment.SpecialFolder specialFolder = (Environment.SpecialFolder)Enum.Parse(typeof(Environment.SpecialFolder), folder);
await Navigate(null, specialFolder);
}
private async Task Navigate(String path, Environment.SpecialFolder? specialFolder = null)
{
try
{
IsFree = false;
Mouse.OverrideCursor = Cursors.AppStarting;
if (path != null)
{
CurrentItem = await FileSystemProvider.GetFolder(path) as FileSystemItem;
}
else if (specialFolder != null)
{
CurrentItem = await FileSystemProvider.GetSpecialFolder(specialFolder.Value) as FileSystemItem;
}
else
{
CurrentItem = await FileSystemProvider.GetThisPC() as FileSystemItem;
try
{
Drives = (CurrentItem as IFileSystemContainer).Items.Cast<DriveItem>().ToList();
}
catch (Exception ex)
{
LogManager.Log(ex, "Error setting file system drives menu.");
}
}
}
catch (Exception ex)
{
IsFree = true;
Mouse.OverrideCursor = null;
await NotificationProvider.ShowError($"Error navigating to the specified path.\n{ex.FlattenMessage()}");
}
finally
{
IsFree = true;
Mouse.OverrideCursor = null;
}
}
private void OnCurrentItemChanged()
{
CurrentPath = CurrentItem.Path;
InvalidateRelayCommands();
}
}
}
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