Creating Experience Handler code to add XP based on Configuration setting.

ChaosBot/Discord/Services/ExperienceHandler.cs

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+using System;
+using System.Linq;
+using System.Reflection;
+using ChaosBot.Models;
+using ChaosBot.Repositories;
+using Microsoft.EntityFrameworkCore;
+using NLog;
+
+namespace ChaosBot.Discord.Services
+{
+    public class ExperienceHandler
+    {
+        private static readonly ILogger _logger = Program.Logger;
+
+        public static async void addXP(ulong DiscordGuildId, ulong DiscordUserId)
+        {
+            try
+            {
+                using (ChaosbotContext dbContext = new ChaosbotContext())
+                {
+                    IQueryable<Experience> ctxUser = dbContext.ExperiencePoints;
+                    IQueryable<Experience> usrXp = ctxUser
+                        .Where(p => p.DiscordGuildId.Equals(DiscordGuildId))
+                        .Where(p => p.DiscordUserId.Equals(DiscordUserId));
+
+                    Experience usrNewXp;
+                    if (usrXp.Any())
+                    {
+                        usrNewXp = usrXp.First();
+                        usrNewXp.Amount = usrNewXp.Amount + Convert.ToUInt64(ConfigurationRepository.GetValue<string>("Experience:PerMsg", DiscordGuildId, "0"));
+                    }
+                    else
+                    {
+                        usrNewXp = new Experience();
+                        usrNewXp.Amount = Convert.ToUInt64(ConfigurationRepository.GetValue<string>("Experience:PerMsg", DiscordGuildId, "0"));
+                    }
+                    usrNewXp.DiscordGuildId = DiscordGuildId;
+                    usrNewXp.DiscordUserId = DiscordUserId;
+
+                    await dbContext.ExperiencePoints.Upsert(usrNewXp)
+                        .On(x => new { x.DiscordGuildId, x.DiscordUserId}).RunAsync();
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.Error(
+                    $"{MethodBase.GetCurrentMethod().ReflectedType.FullName}: Exception [{ex}] thrown, <[{ex.Message}]>.");
+            }
+        }
+    }
+}