CoffeeConsumableViewModel.cs

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using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.Linq;
 
namespace MockPlugin.Consumables
{
    public class CoffeeConsumableViewModel
    {
        private readonly CoffeeConsumableManager mManager;
 
        // ReSharper disable once UnusedMember.Global
        public CoffeeConsumableViewModel() : this(new CoffeeConsumableManager())
        {
 
        }
 
        public CoffeeConsumableViewModel(CoffeeConsumableManager value)
        {
            mManager = value;
            if (value?.Pools is INotifyCollectionChanged incs)
            {
                incs.CollectionChanged += RebuildLists;
            }
            RebuildLists(null, null);
        }
 
        private void RebuildLists(object sender, NotifyCollectionChangedEventArgs e)
        {
            Ingredients.Clear();
            var allIngredients = mManager.Pools.OfType<CoffeeIngredient>().ToArray();
            foreach (var dev in allIngredients.Select(somePool => somePool.ForDevice).Distinct())
            {
                var newBundle = new IngredientsForDevice() {DeviceName = dev.Name};
                foreach (var someIng in allIngredients.Where(someIng => someIng.ForDevice == dev))
                {
                    newBundle.Ingredients.Add(someIng);
                }
                Ingredients.Add(newBundle);
            }
        }
 
        public ObservableCollection<IngredientsForDevice> Ingredients { get; } = new ObservableCollection<IngredientsForDevice>();
    }
 
    public class IngredientsForDevice
    {
        public string DeviceName { get; set; }
        public ObservableCollection<CoffeeIngredient> Ingredients { get; } = new ObservableCollection<CoffeeIngredient>();
    }
}