// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Collections;
using System.Diagnostics;
 
namespace Aspire.Hosting.ApplicationModel;
 
[DebuggerDisplay("Count = {Count}")]
[DebuggerTypeProxy(typeof(ApplicationResourceCollectionDebugView))]
internal sealed class ResourceCollection : IResourceCollection
{
    private readonly List<IResource> _resources = [];
 
    public ResourceCollection() { }
 
    public ResourceCollection(IEnumerable<IResource> resources) => _resources.AddRange(resources);
 
    public IResource this[int index] { get => _resources[index]; set => _resources[index] = value; }
    public int Count => _resources.Count;
    public bool IsReadOnly => false;
    public void Add(IResource item) => _resources.Add(item);
    public void Clear() => _resources.Clear();
    public bool Contains(IResource item) => _resources.Contains(item);
    public void CopyTo(IResource[] array, int arrayIndex) => _resources.CopyTo(array, arrayIndex);
    public IEnumerator<IResource> GetEnumerator() => _resources.GetEnumerator();
    public int IndexOf(IResource item) => _resources.IndexOf(item);
    public void Insert(int index, IResource item) => _resources.Insert(index, item);
    public bool Remove(IResource item) => _resources.Remove(item);
    public void RemoveAt(int index) => _resources.RemoveAt(index);
    IEnumerator IEnumerable.GetEnumerator() => _resources.GetEnumerator();
 
    private sealed class ApplicationResourceCollectionDebugView(ResourceCollection collection)
    {
        [DebuggerBrowsable(DebuggerBrowsableState.RootHidden)]
        public ResourceDebugView[] Items => [.. collection.Select(x => new ResourceDebugView { Resource = x })];
 
        [DebuggerDisplay("{Resource}", Name = "{Resource.Name}")]
        public sealed class ResourceDebugView
        {
            [DebuggerBrowsable(DebuggerBrowsableState.RootHidden)]
            public required IResource Resource { get; init; }
        }
    }
}