consolidate Service interface and implementation classes

Oqtane.Client/Services/SystemService.cs

@@ -3,10 +3,46 @@ using System.Threading.Tasks;
 using System.Collections.Generic;
 using Oqtane.Documentation;
 using Oqtane.Shared;
-using System.Net;
 
 namespace Oqtane.Services
 {
+    /// <summary>
+    /// Service to retrieve and update system information.
+    /// </summary>
+    public interface ISystemService
+    {
+        /// <summary>
+        /// returns a key-value dictionary with the current system configuration information
+        /// </summary>
+        /// <returns></returns>
+        Task<Dictionary<string, object>> GetSystemInfoAsync();
+
+        /// <summary>
+        /// returns a key-value dictionary with the current system information - "environment" or "configuration"
+        /// </summary>
+        /// <returns></returns>
+        Task<Dictionary<string, object>> GetSystemInfoAsync(string type);
+
+        /// <summary>
+        /// returns a config value
+        /// </summary>
+        /// <returns></returns>
+        Task<object> GetSystemInfoAsync(string settingKey, object defaultValue);
+
+        /// <summary>
+        /// Updates system information
+        /// </summary>
+        /// <param name="settings"></param>
+        /// <returns></returns>
+        Task UpdateSystemInfoAsync(Dictionary<string, object> settings);
+
+        /// <summary>
+        /// returns a key-value dictionary with default system icons
+        /// </summary>
+        /// <returns></returns>
+        Task<Dictionary<string, string>> GetIconsAsync();
+    }
+
     [PrivateApi("Don't show in the documentation, as everything should use the Interface")]
     public class SystemService : ServiceBase, ISystemService
     {