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using System;
using System.Collections.Generic;
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 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(); }
}
public RelayCommand NavigateCommand { get; set; }
public RelayCommand<FileSystemItem> OpenItemCommand { get; set; }
public RelayCommand BackCommand { get; set; }
public FileSystemViewVM()
{
NavigateCommand = new RelayCommand(NavigateToCurrentPath);
OpenItemCommand = new RelayCommand<FileSystemItem>(OpenFileSystemItem);
BackCommand = new RelayCommand(NavigateBack, () => !(CurrentItem is FolderItem) || !(CurrentItem as FolderItem).IsRoot);
}
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)
{
await Navigate(item.Path);
}
}
private async Task Navigate(String path)
{
try
{
IsFree = false;
Mouse.OverrideCursor = Cursors.AppStarting;
if (path != null)
{
CurrentItem = await FileSystemProvider.GetFolder(path) as FileSystemItem;
}
else
{
CurrentItem = await FileSystemProvider.GetThisPC() as FileSystemItem;
}
}
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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