refactor a good bit of stuff for better dependency injection

fix regular expression for T6 log parsing

Application/Misc/BaseConfigurationHandler.cs

@@ -0,0 +1,72 @@
+using Newtonsoft.Json;
+using SharedLibraryCore;
+using SharedLibraryCore.Exceptions;
+using SharedLibraryCore.Interfaces;
+using System;
+using System.IO;
+using System.Threading.Tasks;
+
+namespace IW4MAdmin.Application.Misc
+{
+    /// <summary>
+    /// default implementation of IConfigurationHandler
+    /// </summary>
+    /// <typeparam name="T">base configuration type</typeparam>
+    public class BaseConfigurationHandler<T> : IConfigurationHandler<T> where T : IBaseConfiguration
+    {
+        T _configuration;
+
+        public BaseConfigurationHandler(string fn)
+        {
+            FileName = Path.Join(Utilities.OperatingDirectory, "Configuration", $"{fn}.json");
+            Build();
+        }
+
+        public string FileName { get; }
+
+        public void Build()
+        {
+            try
+            {
+                var configContent = File.ReadAllText(FileName);
+                _configuration = JsonConvert.DeserializeObject<T>(configContent);
+            }
+
+            catch (FileNotFoundException)
+            {
+                _configuration = default;
+            }
+
+            catch (Exception e)
+            {
+                throw new ConfigurationException("MANAGER_CONFIGURATION_ERROR")
+                {
+                    Errors = new[] { e.Message },
+                    ConfigurationFileName = FileName
+                };
+            }
+        }
+
+        public Task Save()
+        {
+            var settings = new JsonSerializerSettings()
+            {
+                Formatting = Formatting.Indented
+            };
+            settings.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
+
+            var appConfigJSON = JsonConvert.SerializeObject(_configuration, settings);
+            return File.WriteAllTextAsync(FileName, appConfigJSON);
+        }
+
+        public T Configuration()
+        {
+            return _configuration;
+        }
+
+        public void Set(T config)
+        {
+            _configuration = config;
+        }
+    }
+}