ServerPortProivder.cs

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using System;
using System.Linq;
 
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
 
using Tgstation.Server.Host.Configuration;
 
namespace Tgstation.Server.Host.Core
{
    sealed class ServerPortProivder : IServerPortProvider
    {
        public ushort HttpApiPort => generalConfigurationOptions.Value.ApiPort;
 
        readonly IOptions<GeneralConfiguration> generalConfigurationOptions;
 
        public ServerPortProivder(
            IConfiguration configuration,
            IOptions<GeneralConfiguration> generalConfigurationOptions,
            ILogger<ServerPortProivder> logger)
        {
            ArgumentNullException.ThrowIfNull(configuration);
            this.generalConfigurationOptions = generalConfigurationOptions ?? throw new ArgumentNullException(nameof(generalConfigurationOptions));
 
            var usingDefaultPort = generalConfigurationOptions.Value.ApiPort == default;
            if (!usingDefaultPort)
                return;
 
            var httpEndpoint = configuration
                .GetSection("Kestrel")
                .GetSection("EndPoints")
                .GetSection("Http")
                .GetSection("Url")
                .Value
                ?? throw new InvalidOperationException("Missing required configuration option General:ApiPort!");
 
            logger.LogWarning("The \"Kestrel\" configuration section is deprecated! Please set your API port using the \"General:ApiPort\" configuration option!");
 
            var splits = httpEndpoint.Split(":", StringSplitOptions.RemoveEmptyEntries);
            var portString = splits.Last();
            portString = portString.TrimEnd('/');
 
            if (!UInt16.TryParse(portString, out var result))
                throw new InvalidOperationException($"Failed to parse HTTP EndPoint port: {httpEndpoint}");
 
            this.generalConfigurationOptions.Value.ApiPort = result;
        }
    }
}