using System.Collections.Generic;

using System.Threading.Tasks;

using SkillChat.Client.Notification.ViewModels;

using Splat;

namespace SkillChat.Client.ViewModel

{

public class Notification

{

private const int DefaultNotificationDurationMs = 10000;

private static Notification _manager;

private List<INotify> _notificationWindows = new List<INotify>();

//Добавление увдеомлений в очередь

private void Add(INotify window)

{

_notificationWindows.Insert(0,window);

Reposition();

}

//Переопределение позиции окна

private void Reposition()

{

int count = 0;

foreach (var window in _notificationWindows)

{

if (!window.IsClosed)

{

count++;

window.SetPosition(window.ScreenBottomRightX - (int)(window.Width*window.PrimaryPixelDensity),

window.ScreenBottomRightY - count * (int)(window.Height* window.PrimaryPixelDensity) - (int)(window.PrimaryPixelDensity) -(int) (10 * window.PrimaryPixelDensity)*count);

}

}

}

public static Notification Manager

{

get { return _manager ?? (_manager = new Notification()); }

}

//Вызов окна

public async void Show(string title, string text, int? timeShow = DefaultNotificationDurationMs)

{

var w = Locator.Current.GetService<INotify>();

w.ShowInTaskbar = false;

w.Topmost = true;

w.DataContext = new NotifyViewModel(title, text, w);

w.Show();

w.OnClosed(Reposition);

Add(w);

if (timeShow != null)

{

await Task.Run(async () =>

{

for (int i = 0; i < timeShow / 100; i++)

{

await Task.Delay(100);

if (w.IsClosed) break;

}

});

if (!w.IsClosed)

w.Close();

}

}

}

}