Add global timer functionality from config

ChaosBot/Discord/DiscordConnect.cs

@@ -38,6 +38,7 @@ namespace ChaosBot.Discord
 
                     // we get the CommandHandler class here and call the InitializeAsync method to start things up for the CommandHandler service
                     await services.GetRequiredService<CommandHandler>().InitializeAsync();
+                    TimerHandler.Initialize(services);
 
                     await Task.Delay(-1);
                 }

ChaosBot/Discord/Services/TimerHandler.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Threading.Tasks;
+using ChaosBot.Services;
+using Discord;
+using Discord.WebSocket;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using NLog;
+
+namespace ChaosBot.Discord.Services
+{
+    public static class TimerHandler
+    {
+        private static readonly Logger _logger = Program._logger;
+        private static DiscordSocketClient _client;
+
+        public static void Initialize(IServiceProvider services)
+        {
+            _client = services.GetRequiredService<DiscordSocketClient>();
+            
+            foreach (IConfigurationSection serverConfig in Program.Cfg.GetSection("Servers").GetChildren())
+            {
+                long? lodestoneChannelSloganDescriptionId = serverConfig.GetValue<long?>("Lodestone:SloganDescription:Channel", null);
+                int refreshMinutes = serverConfig.GetValue<int>("Lodestone:SloganDescription:RefreshMinutes", 60);
+
+                if (lodestoneChannelSloganDescriptionId == null) continue;
+
+                async void UpdateChannelSloganDescription()
+                {
+                    SocketGuild guild = _client.GetGuild(Convert.ToUInt64(serverConfig.Key));
+                    if (guild == null)
+                    {
+                        _logger.Warn($"Guild {Convert.ToUInt64(serverConfig.Key)} not found");
+                        return;
+                    }
+                    
+                    SocketChannel socketChannel = guild.GetChannel(Convert.ToUInt64(lodestoneChannelSloganDescriptionId));
+                    if (socketChannel == null)
+                    {
+                        _logger.Warn($"Channel {Convert.ToUInt64(lodestoneChannelSloganDescriptionId)} not found in server {guild.Name}");
+                        return;
+                    }
+                    
+                    ITextChannel channel = socketChannel as ITextChannel;
+                    if (channel == null)
+                    {
+                        _logger.Warn($"Could not cast channel {socketChannel.Id} to ITextChannel");
+                        return;
+                    };
+                        
+                    string description = LodestoneManager.GetFreeCompanyById(serverConfig.GetValue<string>("Lodestone:FreeCompanyId")).FreeCompany.Slogan;;
+                    await channel.ModifyAsync(x =>
+                    {
+                        x.Topic = description;
+                    });
+                }
+
+                Timer.RunTimer(UpdateChannelSloganDescription, new TimeSpan(TimeSpan.TicksPerMinute * refreshMinutes));
+            }
+        }
+    }
+}