Allow config for servers to be read from database

ChaosBot/Database/Entity/ServerConfigurationFlag.cs

@@ -0,0 +1,43 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Text.Json;
+using System.Xml.Serialization;
+using ChaosBot.Attribute;
+
+namespace ChaosBot.Database.Entity
+{
+    [DBEntity("ServerConfigurationFlags")]
+    public class ServerConfigurationFlag<T>
+    {
+        [DBUnique]
+        public string key { get; }
+        
+        public string serializedValue { get; }
+        
+        [DBUnique]
+        public long guildId { get; }
+        
+        public ServerConfigurationFlag(string key, T value, ulong guildId)
+        {
+            this.serializedValue = Serialize(value);
+            this.key = key;
+            this.guildId = Convert.ToInt64(guildId);
+        }
+
+        public T GetValue()
+        {
+            return Deserialize(serializedValue);
+        }
+
+        public static string Serialize(T value)
+        {
+            return JsonSerializer.Serialize(value);
+        }
+
+        public static T Deserialize(string serializedValue)
+        {
+            return JsonSerializer.Deserialize<T>(serializedValue);
+        }
+    }
+}

ChaosBot/Database/Repository/ConfigurationRepository.cs

@@ -1,3 +1,7 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using ChaosBot.Database.Entity;
 using Microsoft.Extensions.Configuration;
 using NLog;
 
@@ -5,24 +9,49 @@ namespace ChaosBot.Database.Repository
 {
     public static class ConfigurationRepository
     {
-        private static Logger _logger = Program._logger;
         public static IConfiguration AppSettingsHandler { get; set; }
 
+        private static readonly string ServersTable = "ServerConfigurationFlags";
+
+        /// <summary>
+        /// Get global configuration option
+        /// </summary>
+        /// <param name="configurationFlag"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
         public static T GetValue<T>(string configurationFlag)
         {
             return AppSettingsHandler.GetValue<T>(configurationFlag);
         }
 
+        /// <summary>
+        /// Get guild specific configuration option
+        /// </summary>
+        /// <param name="configurationFlag"></param>
+        /// <param name="guildId"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
         public static T GetValue<T>(string configurationFlag, ulong guildId)
         {
+            if (Program._logger == null) return AppSettingsHandler.GetValue<T>($"Servers:{guildId}:{configurationFlag}");
+            
+            Program._logger.Info($"===> called for {configurationFlag} in {guildId}");
+            Dictionary<string, object> filterColumns = new Dictionary<string, object>();
+            filterColumns.Add("key", configurationFlag);
+            filterColumns.Add("guildId", Convert.ToInt64(guildId));
+            DataTable valueTable = Controller.SelectQuery(ServersTable, filterColumns: filterColumns);
+            if (valueTable.Rows.Count == 1)
+            {
+                return ServerConfigurationFlag<T>.Deserialize(valueTable.Rows[0]["serializedValue"].ToString());
+            }
             return AppSettingsHandler.GetValue<T>($"Servers:{guildId}:{configurationFlag}");
         }
 
-        public static T SetValue<T>(string configurationFlag, T value)
-        {
-            return AppSettingsHandler.GetValue<T>(configurationFlag);
-        }
-
+        /// <summary>
+        /// Grab configuration from appsettings.json, method does not look at the database
+        /// </summary>
+        /// <param name="configurationFlag"></param>
+        /// <returns></returns>
         public static IConfigurationSection GetSection(string configurationFlag)
         {
             return AppSettingsHandler.GetSection(configurationFlag);