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

using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
using Microsoft.Extensions.Primitives;

namespace Microsoft.AspNetCore.Server.Kestrel.Core;

/// <summary>
/// An exception thrown when a malformed http request has been received.
/// </summary>
[Obsolete("Moved to Microsoft.AspNetCore.Http.BadHttpRequestException. See https://aka.ms/badhttprequestexception for details.")] // Never remove.
public sealed class BadHttpRequestException : Microsoft.AspNetCore.Http.BadHttpRequestException
{
    internal BadHttpRequestException(string message, int statusCode, RequestRejectionReason reason)
        : this(message, statusCode, reason, null)
    { }

    internal BadHttpRequestException(string message, int statusCode, RequestRejectionReason reason, HttpMethod? requiredMethod)
        : base(message, statusCode)
    {
        Reason = reason;

        if (requiredMethod.HasValue)
        {
            AllowedHeader = HttpUtilities.MethodToString(requiredMethod.Value);
        }
    }

    /// <summary>
    /// Gets the HTTP status code for this exception.
    /// </summary>
    public new int StatusCode { get => base.StatusCode; }

    internal StringValues AllowedHeader { get; }

    internal RequestRejectionReason Reason { get; }
}