AuthorityInvokerBase{TAuthority}.cs

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using System;
using System.Linq;
 
using Tgstation.Server.Api.Models;
 
namespace Tgstation.Server.Host.Authority.Core
{
    abstract class AuthorityInvokerBase<TAuthority> : IAuthorityInvoker<TAuthority>
        where TAuthority : IAuthority
    {
        protected TAuthority Authority { get; }
 
        public AuthorityInvokerBase(TAuthority authority)
        {
            Authority = authority ?? throw new ArgumentNullException(nameof(authority));
        }
 
        IQueryable<TResult> IAuthorityInvoker<TAuthority>.InvokeQueryable<TResult>(Func<TAuthority, IQueryable<TResult>> authorityInvoker)
        {
            ArgumentNullException.ThrowIfNull(authorityInvoker);
            return authorityInvoker(Authority);
        }
 
        IQueryable<TApiModel> IAuthorityInvoker<TAuthority>.InvokeTransformableQueryable<TResult, TApiModel, TTransformer>(Func<TAuthority, IQueryable<TResult>> authorityInvoker)
        {
            ArgumentNullException.ThrowIfNull(authorityInvoker);
 
            var queryable = authorityInvoker(Authority);
 
            if (typeof(EntityId).IsAssignableFrom(typeof(TResult)))
                queryable = queryable.OrderBy(item => ((EntityId)(object)item).Id!.Value); // order by ID to fix an EFCore warning
 
            var expression = new TTransformer().Expression;
            return queryable
                .Select(expression);
        }
    }
}