EnvelopeGenerator/EnvelopeGenerator.Web/Sanitizers/DIExtensions.cs

using Ganss.Xss;
using Microsoft.Extensions.DependencyInjection;

namespace EnvelopeGenerator.Web.Sanitizers
{
    public static class DIExtensions
    {
        public static IServiceCollection AddSanitizer<THtmlSanitizer>(this IServiceCollection services, Action<THtmlSanitizer>? optionActions = null)
            where THtmlSanitizer : HtmlSanitizer => services
            .AddSingleton(serviceProvider =>
            {
                var sanitizer = ActivatorUtilities.CreateInstance<THtmlSanitizer>(serviceProvider);
                optionActions?.Invoke(sanitizer);
                return sanitizer;
            });
    }
}