// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Diagnostics.CodeAnalysis;
using Microsoft.AspNetCore.Mvc.Routing;
 
namespace Microsoft.AspNetCore.Mvc;
 
/// <summary>
/// Identifies an action that supports the HTTP HEAD method.
/// </summary>
public class HttpHeadAttribute : HttpMethodAttribute
{
    private static readonly IEnumerable<string> _supportedMethods = new[] { "HEAD" };
 
    /// <summary>
    /// Creates a new <see cref="HttpHeadAttribute"/>.
    /// </summary>
    public HttpHeadAttribute()
        : base(_supportedMethods)
    {
    }
 
    /// <summary>
    /// Creates a new <see cref="HttpHeadAttribute"/> with the given route template.
    /// </summary>
    /// <param name="template">The route template. May not be null.</param>
    public HttpHeadAttribute([StringSyntax("Route")] string template)
        : base(_supportedMethods, template)
    {
        ArgumentNullException.ThrowIfNull(template);
    }
}