Readarr/src/Readarr.Http/VersionedFeedControllerAttribute.cs

using System;
using Microsoft.AspNetCore.Mvc.Routing;

namespace Readarr.Http
{
    public class VersionedFeedControllerAttribute : Attribute, IRouteTemplateProvider
    {
        public VersionedFeedControllerAttribute(int version, string resource = "[controller]")
        {
            Version = version;
            Template = $"feed/v{Version}/{resource}";
        }

        public string Template { get; private set; }
        public int? Order => 2;
        public string Name { get; set; }
        public int Version { get; private set; }
    }

    public class V1FeedControllerAttribute : VersionedFeedControllerAttribute
    {
        public V1FeedControllerAttribute(string resource = "[controller]")
            : base(1, resource)
        {
        }
    }
}