RateLimitException.cs

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using System;
using System.Linq;
using System.Net.Http;
 
using Microsoft.Net.Http.Headers;
 
using Tgstation.Server.Api.Models.Response;
 
namespace Tgstation.Server.Client
{
    public sealed class RateLimitException : ApiException
    {
        public DateTimeOffset? RetryAfter { get; }
 
        public RateLimitException(ErrorMessageResponse? errorMessage, HttpResponseMessage responseMessage)
            : base(errorMessage, responseMessage)
        {
            if (responseMessage == null)
                throw new ArgumentNullException(nameof(responseMessage));
 
            if (!responseMessage.Headers.TryGetValues(HeaderNames.RetryAfter, out var values))
                return;
 
            var secondsString = values.FirstOrDefault();
            if (UInt32.TryParse(secondsString, out var seconds))
                RetryAfter = DateTimeOffset.UtcNow.AddSeconds(seconds);
        }
 
        public RateLimitException()
        {
        }
 
        public RateLimitException(string message)
            : base(message)
        {
        }
 
        public RateLimitException(string message, Exception innerException)
            : base(message, innerException)
        {
        }
    }
}