using System.Collections;
using System.Collections.Concurrent;
using Connected.Interop;

namespace Connected.Caching;

internal class EntryEnumerator<T> : IEnumerator<T>
{
	public EntryEnumerator(ConcurrentDictionary<string, IEntry> items)
	{
		Items = items;
		Index = -1;
	}

	private int Count => Items.Count;
	private int Index { get; set; }
	private ConcurrentDictionary<string, IEntry> Items { get; }

	public T Current => TypeConversion.TryConvert(Items.ElementAt(Index).Value.Instance, out T result) ? result : default;

	object IEnumerator.Current => Current;

	public void Dispose()
	{
	}

	public bool MoveNext()
	{
		if (Index < Count - 1)
		{
			Index++;

			return true;
		}

		return false;
	}

	public void Reset()
	{
		Index = -1;
	}
}