ExtensionMethods.cs

using System;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.JSInterop;

namespace CurrieTechnologies.Razor.SweetAlert2
{
    /// <summary>
    ///     Collection of methods that extend other classes.
    /// </summary>
    public static class ExtensionMethods
    {
        /// <summary>
        ///     Adds the <see cref="SweetAlertService" /> as a scoped service to the specified <see cref="IServiceCollection" />.
        /// </summary>
        /// <param name="services">The <see cref="IServiceCollection" /> to add the <see cref="SweetAlertService" /> to.</param>
        /// <returns>The original <see cref="IServiceCollection" />.</returns>
        public static IServiceCollection AddSweetAlert2(this IServiceCollection services)
        {
            return services.AddScoped<SweetAlertService>();
        }

        /// <summary>
        ///     Registers an action to configure the <see cref="SweetAlertService" /> and add it as a scoped service to the
        ///     specified <see cref="IServiceCollection" />.
        /// </summary>
        /// <param name="services">The <see cref="IServiceCollection" /> to add the <see cref="SweetAlertService" /> to.</param>
        /// <param name="configureOptions">The action used to configure the options.</param>
        /// <returns></returns>
        public static IServiceCollection AddSweetAlert2(this IServiceCollection services,
            Action<SweetAlertServiceOptions> configureOptions)
        {
            if (configureOptions == null) throw new ArgumentNullException(nameof(configureOptions));

            var options = new SweetAlertServiceOptions();
            configureOptions(options);
            return services.AddScoped(s => new SweetAlertService(s.GetRequiredService<IJSRuntime>(), options));
        }
    }
}