using System.IO;

#if !DEBUG

using System.Collections.Generic;

#endif

namespace Cbdx.Tests.Resources
{
    internal static class ResourceLoader
    {
        private static readonly string MyNameSpaceFull = typeof(ResourceLoader).Namespace;

        //TODO: add PreRelease conf for debug conditions

#if !DEBUG

        private static readonly Dictionary<string, byte[]> CachedBinResource;

        static ResourceLoader()
        {
            var assembly = Assembly.GetExecutingAssembly();

            CachedBinResource = assembly.GetManifestResourceNames()
                .Where(p => p.StartsWith(MyNameSpaceFull))
                .ToDictionary(p => p, p => assembly.GetManifestResourceStream(p).ToBytes());
        }


        private static byte[] ToBytes(this Stream me)
        {
            using (var tmp = new MemoryStream())
            {
                me.CopyTo(tmp);
                return tmp.ToArray();
            }
        }
#endif

        public static byte[] GetBinResource(string path)
        {
#if DEBUG
            var localFile = Path.Combine(DebugSupport.ResourcePath, path);
            return File.Exists(localFile)
                ? File.ReadAllBytes(localFile)
                : null;
#else

            var resName = path.Replace("/", ".");
            return CachedBinResource.TryGetValue($"{MyNameSpaceFull}.{resName}", out var bin) ? bin : null;
#endif
        }
    }
}