// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Reflection;
using Microsoft.JSInterop.Infrastructure;

namespace Microsoft.JSInterop
{
    internal static class JSCallResultTypeHelper
    {
        // We avoid using Assembly.GetExecutingAssembly() because this is shared code.
        private static readonly Assembly _currentAssembly = typeof(JSCallResultType).Assembly;

        public static JSCallResultType FromGeneric<TResult>()
        {
            if (typeof(TResult).Assembly == _currentAssembly)
            {
                if (typeof(TResult) == typeof(IJSObjectReference) ||
                    typeof(TResult) == typeof(IJSInProcessObjectReference) ||
                    typeof(TResult) == typeof(IJSUnmarshalledObjectReference))
                {
                    return JSCallResultType.JSObjectReference;
                }
                else if (typeof(TResult) == typeof(IJSStreamReference))
                {
                    return JSCallResultType.JSStreamReference;
                }
                else if (typeof(TResult) == typeof(IJSVoidResult))
                {
                    return JSCallResultType.JSVoidResult;
                }
            }

            return JSCallResultType.Default;
        }
    }
}
