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

using System;
using Microsoft.AspNetCore.Razor.Language.Legacy;

namespace Microsoft.AspNetCore.Razor.Language.Extensions
{
    public static class FunctionsDirective
    {
        public static readonly DirectiveDescriptor Directive = DirectiveDescriptor.CreateDirective(
            SyntaxConstants.CSharp.FunctionsKeyword,
            DirectiveKind.CodeBlock,
            builder =>
            {
                builder.Description = Resources.FunctionsDirective_Description;
            });

        public static void Register(RazorProjectEngineBuilder builder)
        {
            if (builder == null)
            {
                throw new ArgumentNullException(nameof(builder));
            }

            builder.AddDirective(Directive, FileKinds.Legacy, FileKinds.Component);
            builder.Features.Add(new FunctionsDirectivePass());
        }

        #region Obsolete
        [Obsolete("This method is obsolete and will be removed in a future version.")]
        public static void Register(IRazorEngineBuilder builder)
        {
            if (builder == null)
            {
                throw new ArgumentNullException(nameof(builder));
            }

            builder.AddDirective(Directive);
            builder.Features.Add(new FunctionsDirectivePass());
        }
        #endregion
    }
}
