using System;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Input;
using MaterialDesignThemes.Wpf;
using Prism.Commands;
using Prism.Mvvm;

namespace Example
{
    [JetBrains.Annotations.UsedImplicitly]
    public class MainWindowViewModel : BindableBase, IDisposable
    {
        public MainWindowViewModel()
        {
            UpdateCommand = new DelegateCommand<string>(async x => await UpdateAsync(x).ConfigureAwait(false));
        }

        private async Task UpdateAsync(string startup)
        {
            var silent = !bool.Parse(startup);
            try
            {
                var manager = Katteker.UpdateManager.Create();
                var releases = await manager.CheckForUpdateAsync();
                MessageQueue.Enqueue(releases.Any() ? "Update available" : "No Update available.", true);

            }
            catch (Exception e)
            {
                if (silent)
                {
                    MessageQueue.Enqueue(e.Message);
                }
            }
        }

        public ICommand UpdateCommand { get; }

        public SnackbarMessageQueue MessageQueue { get; } = new SnackbarMessageQueue();

        public void Dispose()
        {
            MessageQueue?.Dispose();
        }
    }
}