Initial commit

Projekte/WebDesktop/WebDesktopBackend/Options/FileSystemOptions.cs

@@ -0,0 +1,8 @@
+namespace WebDesktopBackend.Options {
+    public class FileSystemOptions : OptionsFromConfiguration {
+        public override string Position => "FileSystem";
+        
+        public string RootDirectory { get; set; }
+        public int MaxSizePerUserInMb { get; set; }
+    }
+}

Projekte/WebDesktop/WebDesktopBackend/Options/OptionsFromConfiguration.cs

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+namespace WebDesktopBackend.Options
+{
+    public abstract class OptionsFromConfiguration
+    {
+        public abstract string Position { get; }
+    }
+}

Projekte/WebDesktop/WebDesktopBackend/Options/OptionsFromConfigurationExtensions.cs

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+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+
+namespace WebDesktopBackend.Options
+{
+    public static class OptionsFromConfigurationExtensions
+    {
+        public static T AddOptionsFromConfiguration<T>(this IServiceCollection services, IConfiguration configuration)
+            where T : OptionsFromConfiguration
+        {
+            T optionsInstance = (T)Activator.CreateInstance(typeof(T));
+            if (optionsInstance == null) return null;
+            string position = optionsInstance.Position;
+            services.Configure((Action<T>)(options =>
+            {
+                IConfigurationSection section = configuration.GetSection(position);
+                if (section != null)
+                {
+                    section.Bind(options);
+                }
+            }));
+            return optionsInstance;
+        }
+    }
+}