Make configuration from DI-init optional

1 files changed, 21 insertions, 3 deletions

diff --git a/src/IOL.VippsEcommerce/ServiceCollectionExtensions.cs b/src/IOL.VippsEcommerce/ServiceCollectionExtensions.cs
index d9c9769..1637dc9 100644
--- a/src/IOL.VippsEcommerce/ServiceCollectionExtensions.cs
+++ b/src/IOL.VippsEcommerce/ServiceCollectionExtensions.cs
@@ -16,13 +16,31 @@ namespace IOL.VippsEcommerce
 			this IServiceCollection services,
 			Action<VippsConfiguration> configuration
 		) {
-			if (services == null) throw new ArgumentNullException(nameof(services));
-			if (configuration == null) throw new ArgumentNullException(nameof(configuration));
-
+			if (services == null)
+				throw new ArgumentNullException(nameof(services));
+			if (configuration == null)
+				throw new ArgumentNullException(nameof(configuration));
 			services.Configure(configuration);
 			services.AddHttpClient<IVippsEcommerceService, VippsEcommerceService>();
 			services.AddScoped<IVippsEcommerceService, VippsEcommerceService>();
 			return services;
 		}
+
+		/// <summary>
+		/// Adds the VippsEcommerceService to your DI, and expects configuration values from environment variables.
+		/// </summary>
+		/// <param name="services">Servicecollection to add VippsEcommerceService to.</param>
+		/// <returns></returns>
+		public static IServiceCollection AddVippsEcommerceService(
+			this IServiceCollection services
+		) {
+			if (services == null)
+				throw new ArgumentNullException(nameof(services));
+			services.Configure(new Action<VippsConfiguration>(o => o.ConfigurationMode =
+																  VippsConfigurationMode.ONLY_ENVIRONMENT));
+			services.AddHttpClient<IVippsEcommerceService, VippsEcommerceService>();
+			services.AddScoped<IVippsEcommerceService, VippsEcommerceService>();
+			return services;
+		}
 	}
 }
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