Refactoring

AMWD.Common.AspNetCore/Extensions/SessionExtensions.cs

@@ -0,0 +1,56 @@
+using System.Linq;
+using Newtonsoft.Json;
+
+namespace Microsoft.AspNetCore.Http
+{
+	/// <summary>
+	/// Extensions for the <see cref="ISession"/> object.
+	/// </summary>
+	public static class SessionExtensions
+	{
+		/// <summary>
+		/// Sets a strong typed value.
+		/// </summary>
+		/// <typeparam name="T">The value type.</typeparam>
+		/// <param name="session">The current session.</param>
+		/// <param name="key">The key.</param>
+		/// <param name="value">The value.</param>
+		public static void SetValue<T>(this ISession session, string key, T value)
+			=> session.SetString(key, JsonConvert.SerializeObject(value));
+
+		/// <summary>
+		/// Gets a strong typed value.
+		/// </summary>
+		/// <typeparam name="T">The value type.</typeparam>
+		/// <param name="session">The current session.</param>
+		/// <param name="key">The key.</param>
+		/// <returns>The value.</returns>
+		public static T GetValue<T>(this ISession session, string key)
+			=> session.HasKey(key) ? JsonConvert.DeserializeObject<T>(session.GetString(key)) : default;
+
+		/// <summary>
+		/// Gets a strong typed value or the fallback value.
+		/// </summary>
+		/// <typeparam name="T">The value type.</typeparam>
+		/// <param name="session">The current session.</param>
+		/// <param name="key">The key.</param>
+		/// <param name="fallback">A fallback value when the key is not present.</param>
+		/// <returns>The value.</returns>
+		public static T GetValue<T>(this ISession session, string key, T fallback)
+		{
+			if (session.HasKey(key))
+				return session.GetValue<T>(key);
+
+			return fallback;
+		}
+
+		/// <summary>
+		/// Checks whether the session has the key available.
+		/// </summary>
+		/// <param name="session">The current session.</param>
+		/// <param name="key">The key.</param>
+		/// <returns><c>true</c> when the key was found, otherwise <c>false</c>.</returns>
+		public static bool HasKey(this ISession session, string key)
+			=> session.Keys.Contains(key);
+	}
+}