using Microsoft.Extensions.Caching.Memory;

namespace EnvelopeGenerator.Extensions;

public static class MemoryCacheExtensions
{
    private static readonly Guid BaseId = Guid.NewGuid();

    public static IDictionary<string, int> GetEnumAsDictionary<TEnum>(this IMemoryCache memoryCache)
        where TEnum : Enum
        => memoryCache.GetOrCreate(BaseId + typeof(TEnum).FullName, _ =>
               Enum.GetValues(typeof(TEnum))
                   .Cast<TEnum>()
                   .ToDictionary(e => e.ToString(), e => Convert.ToInt32(e)))
           ?? throw new InvalidOperationException($"Failed to cache or retrieve enum dictionary for type '{typeof(TEnum).FullName}'.");
}