quite a bit of cleanup

src/NadekoBot/Modules/Administration/Commands/DMForwardCommands.cs

@@ -74,7 +74,7 @@ namespace NadekoBot.Modules.Administration
                     var title = $"DM from [{msg.Author}]({msg.Author.Id})";
                     if (ForwardDMsToAllOwners)
                     {
-                        var msgs = await Task.WhenAll(ownerChannels.Where(ch => ch.Recipient.Id != msg.Author.Id)
+                        await Task.WhenAll(ownerChannels.Where(ch => ch.Recipient.Id != msg.Author.Id)
                             .Select(ch => ch.SendConfirmAsync(title, msg.Content))).ConfigureAwait(false);
                     }
                     else

src/NadekoBot/Modules/Administration/Commands/LogCommand.cs

@@ -35,7 +35,6 @@ namespace NadekoBot.Modules.Administration
 
             private static ConcurrentDictionary<ITextChannel, List<string>> PresenceUpdates { get; } = new ConcurrentDictionary<ITextChannel, List<string>>();
             private static Timer timerReference { get; }
-            private IGoogleApiService _google { get; }
 
             static LogCommands()
             {
@@ -43,11 +42,8 @@ namespace NadekoBot.Modules.Administration
                 _log = LogManager.GetCurrentClassLogger();
                 var sw = Stopwatch.StartNew();
                 
-                using (var uow = DbHandler.UnitOfWork())
-                {
                 GuildLogSettings = new ConcurrentDictionary<ulong, LogSetting>(NadekoBot.AllGuildConfigs
                     .ToDictionary(g => g.GuildId, g => g.LogSetting));
-                }
 
                 timerReference = new Timer(async (state) =>
                 {
@@ -59,7 +55,11 @@ namespace NadekoBot.Modules.Administration
                         {
                             List<string> messages;
                             if (PresenceUpdates.TryRemove(key, out messages))
-                                try { await key.SendConfirmAsync("Presence Updates", string.Join(Environment.NewLine, messages)); } catch { }
+                                try { await key.SendConfirmAsync("Presence Updates", string.Join(Environment.NewLine, messages)); }
+                                catch
+                                {
+                                    // ignored
+                                }
                         }));
                     }
                     catch (Exception ex)
@@ -159,7 +159,9 @@ namespace NadekoBot.Modules.Administration
                     //}
                 }
                 catch
-                { }
+                {
+                    // ignored
+                }
             }
 
             private static async Task _client_UserVoiceStateUpdated_TTS(SocketUser iusr, SocketVoiceState before, SocketVoiceState after)
@@ -188,7 +190,7 @@ namespace NadekoBot.Modules.Administration
                     var str = "";
                     if (beforeVch?.Guild == afterVch?.Guild)
                     {
-                        str = $"{usr.Username} moved from {beforeVch.Name} to {afterVch.Name}";
+                        str = $"{usr.Username} moved from {beforeVch?.Name} to {afterVch?.Name}";
                     }
                     else if (beforeVch == null)
                     {
@@ -201,7 +203,10 @@ namespace NadekoBot.Modules.Administration
                     var toDelete = await logChannel.SendMessageAsync(str, true).ConfigureAwait(false);
                     toDelete.DeleteAfter(5);
                 }
-                catch { }
+                catch
+                {
+                    // ignored
+                }
             }
 
             private static async void MuteCommands_UserMuted(IGuildUser usr, MuteCommands.MuteType muteType)
@@ -216,7 +221,7 @@ namespace NadekoBot.Modules.Administration
                     ITextChannel logChannel;
                     if ((logChannel = await TryGetLogChannel(usr.Guild, logSetting, LogType.UserMuted)) == null)
                         return;
-                    string mutes = "";
+                    var mutes = "";
                     switch (muteType)
                     {
                         case MuteCommands.MuteType.Voice:

src/NadekoBot/Modules/Administration/Commands/Migration.cs

@@ -103,11 +103,8 @@ namespace NadekoBot.Modules.Administration
                         var greetChannel = (ulong)(long)reader["GreetChannelId"];
                         var greetMsg = (string)reader["GreetText"];
                         var bye = (long)reader["Bye"] == 1;
-                        var byeDM = (long)reader["ByePM"] == 1;
                         var byeChannel = (ulong)(long)reader["ByeChannelId"];
                         var byeMsg = (string)reader["ByeText"];
-                        var grdel = false;
-                        var byedel = grdel;
                         var gc = uow.GuildConfigs.For(gid, set => set);
 
                         if (greetDM)
@@ -121,7 +118,6 @@ namespace NadekoBot.Modules.Administration
                         gc.ByeMessageChannelId = byeChannel;
                         gc.ChannelByeMessageText = byeMsg;
 
-                        gc.AutoDeleteGreetMessagesTimer = gc.AutoDeleteByeMessagesTimer = grdel ? 30 : 0;
                         _log.Info(++i);
                     }
                 }
@@ -129,12 +125,12 @@ namespace NadekoBot.Modules.Administration
                     _log.Warn("Greet/bye messages won't be migrated");
                 }
                 var com2 = db.CreateCommand();
-                com.CommandText = "SELECT * FROM CurrencyState GROUP BY UserId";
+                com2.CommandText = "SELECT * FROM CurrencyState GROUP BY UserId";
 
                 i = 0;
                 try
                 {
-                    var reader2 = com.ExecuteReader();
+                    var reader2 = com2.ExecuteReader();
                     while (reader2.Read())
                     {
                         _log.Info(++i);
@@ -203,7 +199,6 @@ namespace NadekoBot.Modules.Administration
                             guildConfig.ExclusiveSelfAssignedRoles = data.ExclusiveSelfAssignedRoles;
                             guildConfig.GenerateCurrencyChannelIds = new HashSet<GCChannelId>(data.GenerateCurrencyChannels.Select(gc => new GCChannelId() { ChannelId = gc.Key }));
                             selfAssRoles.AddRange(data.ListOfSelfAssignableRoles.Select(r => new SelfAssignedRole() { GuildId = guildConfig.GuildId, RoleId = r }).ToArray());
-                            var logSetting = guildConfig.LogSetting;
                             guildConfig.LogSetting.IgnoredChannels = new HashSet<IgnoredLogChannel>(data.LogserverIgnoreChannels.Select(id => new IgnoredLogChannel() { ChannelId = id }));
 
                             guildConfig.LogSetting.LogUserPresenceId = data.LogPresenceChannel;
@@ -249,7 +244,7 @@ namespace NadekoBot.Modules.Administration
 
             private void MigratePermissions0_9(IUnitOfWork uow)
             {
-                var PermissionsDict = new ConcurrentDictionary<ulong, ServerPermissions0_9>();
+                var permissionsDict = new ConcurrentDictionary<ulong, ServerPermissions0_9>();
                 if (!Directory.Exists("data/permissions/"))
                 {
                     _log.Warn("No data from permissions will be migrated.");
@@ -263,12 +258,15 @@ namespace NadekoBot.Modules.Administration
                         if (string.IsNullOrWhiteSpace(strippedFileName)) continue;
                         var id = ulong.Parse(strippedFileName);
                         var data = JsonConvert.DeserializeObject<ServerPermissions0_9>(File.ReadAllText(file));
-                        PermissionsDict.TryAdd(id, data);
+                        permissionsDict.TryAdd(id, data);
+                    }
+                    catch
+                    {
+                        // ignored
                     }
-                    catch { }
                 }
                 var i = 0;
-                PermissionsDict
+                permissionsDict
                     .Select(p => new { data = p.Value, gconfig = uow.GuildConfigs.For(p.Key) })
                     .AsParallel()
                     .ForAll(perms =>

src/NadekoBot/Modules/Administration/Commands/MuteCommands.cs

@@ -36,8 +36,6 @@ namespace NadekoBot.Modules.Administration
 
             static MuteCommands()
             {
-                var _log = LogManager.GetCurrentClassLogger();
-
                 var configs = NadekoBot.AllGuildConfigs;
                 GuildMuteRoles = new ConcurrentDictionary<ulong, string>(configs
                         .Where(c => !string.IsNullOrWhiteSpace(c.MuteRoleName))

src/NadekoBot/Modules/Administration/Commands/ProtectionCommands.cs

@@ -402,8 +402,6 @@ namespace NadekoBot.Modules.Administration
             [RequireContext(ContextType.Guild)]
             public async Task AntiList()
             {
-                var channel = (ITextChannel)Context.Channel;
-
                 AntiSpamStats spam;
                 antiSpamGuilds.TryGetValue(Context.Guild.Id, out spam);
 

src/NadekoBot/Modules/Administration/Commands/RatelimitCommand.cs

@@ -37,15 +37,13 @@ namespace NadekoBot.Modules.Administration
 
                 public bool CheckUserRatelimit(ulong id)
                 {
-                    RatelimitedUser usr = Users.GetOrAdd(id, (key) => new RatelimitedUser() { UserId = id });
+                    var usr = Users.GetOrAdd(id, (key) => new RatelimitedUser() { UserId = id });
                     if (usr.MessageCount == MaxMessages)
                     {
                         return true;
                     }
-                    else
-                    {
                     usr.MessageCount++;
-                        var t = Task.Run(async () =>
+                    var _ = Task.Run(async () =>
                     {
                         try
                         {
@@ -56,8 +54,6 @@ namespace NadekoBot.Modules.Administration
                     });
                     return false;
                 }
-
-                }
             }
 
             static RatelimitCommand()

src/NadekoBot/Modules/Administration/Commands/ServerGreetCommands.cs

@@ -18,10 +18,10 @@ namespace NadekoBot.Modules.Administration
     public partial class Administration
     {
         [Group]
-        public class ServerGreetCommands : ModuleBase
+        public class ServerGreetCommands : NadekoSubmodule
         {
             //make this to a field in the guildconfig table
-            class GreetSettings
+            private class GreetSettings
             {
                 public int AutoDeleteGreetMessagesTimer { get; set; }
                 public int AutoDeleteByeMessagesTimer { get; set; }
@@ -129,7 +129,10 @@ namespace NadekoBot.Modules.Administration
                             catch (Exception ex) { _log.Warn(ex); }
                         }
                     }
-                    catch { }
+                    catch
+                    {
+                        // ignored
+                    }
                 });
                 return Task.CompletedTask;
             }
@@ -212,7 +215,10 @@ namespace NadekoBot.Modules.Administration
                             }
                         }
                     }
-                    catch { }
+                    catch
+                    {
+                        // ignored
+                    }
                 });
                 return Task.CompletedTask;
             }
@@ -222,7 +228,6 @@ namespace NadekoBot.Modules.Administration
             [RequireUserPermission(GuildPermission.ManageGuild)]
             public async Task GreetDel(int timer = 30)
             {
-                var channel = (ITextChannel)Context.Channel;
                 if (timer < 0 || timer > 600)
                     return;
 
@@ -375,7 +380,7 @@ namespace NadekoBot.Modules.Administration
 
                 await Context.Channel.SendConfirmAsync("🆗 New DM greet message **set**.").ConfigureAwait(false);
                 if (!sendGreetEnabled)
-                    await Context.Channel.SendConfirmAsync($"ℹ️ Enable DM greet messsages by typing `{NadekoBot.ModulePrefixes[typeof(Administration).Name]}greetdm`").ConfigureAwait(false);
+                    await Context.Channel.SendConfirmAsync($"ℹ️ Enable DM greet messsages by typing `{Prefix}greetdm`").ConfigureAwait(false);
             }
 
             public static bool SetGreetDmMessage(ulong guildId, ref string message)
@@ -450,7 +455,7 @@ namespace NadekoBot.Modules.Administration
 
                 await Context.Channel.SendConfirmAsync("🆗 New bye message **set**.").ConfigureAwait(false);
                 if (!sendByeEnabled)
-                    await Context.Channel.SendConfirmAsync($"ℹ️ Enable bye messsages by typing `{NadekoBot.ModulePrefixes[typeof(Administration).Name]}bye`").ConfigureAwait(false);
+                    await Context.Channel.SendConfirmAsync($"ℹ️ Enable bye messsages by typing `{Prefix}bye`").ConfigureAwait(false);
             }
 
             public static bool SetByeMessage(ulong guildId, ref string message)

src/NadekoBot/Modules/Administration/Commands/VoicePlusTextCommands.cs

@@ -30,10 +30,8 @@ namespace NadekoBot.Modules.Administration
             {
                 var _log = LogManager.GetCurrentClassLogger();
                 var sw = Stopwatch.StartNew();
-                using (var uow = DbHandler.UnitOfWork())
+
-                {
                 voicePlusTextCache = new ConcurrentHashSet<ulong>(NadekoBot.AllGuildConfigs.Where(g => g.VoicePlusTextEnabled).Select(g => g.GuildId));
-                }
                 NadekoBot.Client.UserVoiceStateUpdated += UserUpdatedEventHandler;
 
                 sw.Stop();

src/NadekoBot/Modules/ClashOfClans/ClashOfClans.cs

@@ -23,12 +23,8 @@ namespace NadekoBot.Modules.ClashOfClans
 
         private static Timer checkWarTimer { get; }
 
-        private static new readonly Logger _log;
-
         static ClashOfClans()
         {
-            _log = LogManager.GetCurrentClassLogger();
-            var sw = Stopwatch.StartNew();
             using (var uow = DbHandler.UnitOfWork())
             {
                 ClashWars = new ConcurrentDictionary<ulong, List<ClashWar>>(
@@ -244,7 +240,6 @@ namespace NadekoBot.Modules.ClashOfClans
             SaveWar(war);
             await ReplyConfirmLocalized("war_ended", warsInfo.Item1[warsInfo.Item2].ShortPrint()).ConfigureAwait(false);
 
-            var size = warsInfo.Item1[warsInfo.Item2].Size;
             warsInfo.Item1.RemoveAt(warsInfo.Item2);
         }
 

src/NadekoBot/Modules/CustomReactions/CustomReactions.cs

@@ -165,7 +165,7 @@ namespace NadekoBot.Modules.CustomReactions
             }
             else
             {
-                var reactions = GuildReactions.AddOrUpdate(Context.Guild.Id,
+                GuildReactions.AddOrUpdate(Context.Guild.Id,
                     new CustomReaction[] { cr },
                     (k, old) =>
                     {

src/NadekoBot/Modules/Gambling/Commands/AnimalRacing.cs

@@ -17,7 +17,7 @@ namespace NadekoBot.Modules.Gambling
     public partial class Gambling
     {
         [Group]
-        public class AnimalRacing : ModuleBase
+        public class AnimalRacing : NadekoSubmodule
         {
             public static ConcurrentDictionary<ulong, AnimalRace> AnimalRaces { get; } = new ConcurrentDictionary<ulong, AnimalRace>();
 
@@ -25,7 +25,7 @@ namespace NadekoBot.Modules.Gambling
             [RequireContext(ContextType.Guild)]
             public async Task Race()
             {
-                var ar = new AnimalRace(Context.Guild.Id, (ITextChannel)Context.Channel);
+                var ar = new AnimalRace(Context.Guild.Id, (ITextChannel)Context.Channel, Prefix);
 
                 if (ar.Fail)
                     await Context.Channel.SendErrorAsync("🏁 `Failed starting a race. Another race is probably running.`").ConfigureAwait(false);
@@ -59,13 +59,16 @@ namespace NadekoBot.Modules.Gambling
                 public List<Participant> participants = new List<Participant>();
                 private ulong serverId;
                 private int messagesSinceGameStarted = 0;
+                private readonly string _prefix;
+
                 private Logger _log { get; }
 
                 public ITextChannel raceChannel { get; set; }
                 public bool Started { get; private set; } = false;
 
-                public AnimalRace(ulong serverId, ITextChannel ch)
+                public AnimalRace(ulong serverId, ITextChannel ch, string prefix)
                 {
+                    this._prefix = prefix;
                     this._log = LogManager.GetCurrentClassLogger();
                     this.serverId = serverId;
                     this.raceChannel = ch;
@@ -75,10 +78,7 @@ namespace NadekoBot.Modules.Gambling
                         return;
                     }
                     
-                    using (var uow = DbHandler.UnitOfWork())
-                    {
                     animals = new ConcurrentQueue<string>(NadekoBot.BotConfig.RaceAnimals.Select(ra => ra.Icon).Shuffle());
-                    }
 
 
                     var cancelSource = new CancellationTokenSource();
@@ -91,7 +91,7 @@ namespace NadekoBot.Modules.Gambling
                             try
                             {
                                 await raceChannel.SendConfirmAsync("Animal Race", $"Starting in 20 seconds or when the room is full.",
-                                    footer: $"Type {NadekoBot.ModulePrefixes[typeof(Gambling).Name]}jr to join the race.");
+                                    footer: $"Type {_prefix}jr to join the race.");
                             }
                             catch (Exception ex)
                             {
@@ -280,9 +280,7 @@ namespace NadekoBot.Modules.Gambling
                 public override bool Equals(object obj)
                 {
                     var p = obj as Participant;
-                    return p == null ?
+                    return p != null && p.User == User;
-                        false :
-                        p.User == User;
                 }
 
                 public override string ToString()

src/NadekoBot/Modules/Gambling/Commands/CurrencyEvents.cs

@@ -42,9 +42,6 @@ namespace NadekoBot.Modules.Gambling
             [RequireContext(ContextType.Guild)]
             [OwnerOnly]
             public async Task StartEvent(CurrencyEvent e, int arg = -1)
-            {
-                var channel = (ITextChannel)Context.Channel;
-                try
             {
                 switch (e)
                 {
@@ -54,12 +51,8 @@ namespace NadekoBot.Modules.Gambling
                     case CurrencyEvent.SneakyGameStatus:
                         await SneakyGameStatusEvent(Context, arg).ConfigureAwait(false);
                         break;
-                        default:
-                            break;
                 }
             }
-                catch { }
-            }
 
             public static async Task SneakyGameStatusEvent(CommandContext Context, int? arg)
             {
@@ -78,7 +71,6 @@ namespace NadekoBot.Modules.Gambling
                     _secretCode += _sneakyGameStatusChars[rng.Next(0, _sneakyGameStatusChars.Length)];
                 }
                 
-                var game = NadekoBot.Client.Game?.Name;
                 await NadekoBot.Client.SetGameAsync($"type {_secretCode} for " + NadekoBot.BotConfig.CurrencyPluralName)
                     .ConfigureAwait(false);
                 try
@@ -88,7 +80,10 @@ namespace NadekoBot.Modules.Gambling
                         $"Lasts {num} seconds. Don't tell anyone. Shhh.")
                         .ConfigureAwait(false);
                 }
-                catch { }
+                catch
+                {
+                    // ignored
+                }
 
 
                 NadekoBot.Client.MessageReceived += SneakyGameMessageReceivedEventHandler;
@@ -114,15 +109,18 @@ namespace NadekoBot.Modules.Gambling
                             .ConfigureAwait(false);
 
                         try { await arg.DeleteAsync(new RequestOptions() { RetryMode = RetryMode.AlwaysFail }).ConfigureAwait(false); }
-                        catch { }
+                        catch
+                        {
+                            // ignored
+                        }
                     });
                 }
 
                 return Task.Delay(0);
             }
 
-            public static Task FlowerReactionEvent(CommandContext Context) =>
+            public static Task FlowerReactionEvent(CommandContext context) =>
-                new FlowerReactionEvent().Start(Context);
+                new FlowerReactionEvent().Start(context);
         }
     }
 
@@ -163,7 +161,7 @@ namespace NadekoBot.Modules.Gambling
             if (msg?.Id == id)
             {
                 _log.Warn("Stopping flower reaction event because message is deleted.");
-                Task.Run(() => End());
+                var __ = Task.Run(End);
             }
 
             return Task.CompletedTask;
@@ -194,10 +192,14 @@ namespace NadekoBot.Modules.Gambling
                 {
                     if (r.Emoji.Name == "🌸" && r.User.IsSpecified && ((DateTime.UtcNow - r.User.Value.CreatedAt).TotalDays > 5) && _flowerReactionAwardedUsers.Add(r.User.Value.Id))
                     {
-                        try { await CurrencyHandler.AddCurrencyAsync(r.User.Value, "Flower Reaction Event", 100, false).ConfigureAwait(false); } catch { }
+                        await CurrencyHandler.AddCurrencyAsync(r.User.Value, "Flower Reaction Event", 100, false)
+                            .ConfigureAwait(false);
                     }
                 }
-                catch { }
+                catch
+                {
+                    // ignored
+                }
             }))
             {
                 try

src/NadekoBot/Modules/Gambling/Commands/Slots.cs

@@ -260,7 +260,7 @@ namespace NadekoBot.Modules.Gambling
                 }
                 finally
                 {
-                    var t = Task.Run(async () =>
+                    var _ = Task.Run(async () =>
                     {
                         await Task.Delay(2000);
                         runningUsers.Remove(Context.User.Id);

src/NadekoBot/Modules/Gambling/Commands/WaifuClaimCommands.cs

@@ -197,8 +197,6 @@ namespace NadekoBot.Modules.Gambling
             [RequireContext(ContextType.Guild)]
             public async Task Divorce([Remainder]IUser target)
             {
-                var channel = (ITextChannel)Context.Channel;
-
                 if (target.Id == Context.User.Id)
                     return;
 

src/NadekoBot/Modules/Gambling/Gambling.cs

@@ -103,7 +103,6 @@ namespace NadekoBot.Modules.Gambling
         [Priority(0)]
         public async Task Award(int amount, [Remainder] IRole role)
         {
-            var channel = (ITextChannel)Context.Channel;
             var users = (await Context.Guild.GetUsersAsync())
                                .Where(u => u.GetRoles().Contains(role))
                                .ToList();

src/NadekoBot/Modules/Games/Commands/CleverBotCommands.cs

@@ -21,12 +21,6 @@ namespace NadekoBot.Modules.Games
         {
             private static Logger _log { get; }
 
-            class CleverAnswer
-            {
-                public string Status { get; set; }
-                public string Response { get; set; }
-            }
-
             public static ConcurrentDictionary<ulong, Lazy<ChatterBotSession>> CleverbotGuilds { get; } = new ConcurrentDictionary<ulong, Lazy<ChatterBotSession>>();
 
             static CleverBotCommands()
@@ -34,14 +28,12 @@ namespace NadekoBot.Modules.Games
                 _log = LogManager.GetCurrentClassLogger();
                 var sw = Stopwatch.StartNew();
 
-                using (var uow = DbHandler.UnitOfWork())
+                
-                {
                 var bot = ChatterBotFactory.Create(ChatterBotType.CLEVERBOT);
                 CleverbotGuilds = new ConcurrentDictionary<ulong, Lazy<ChatterBotSession>>(
                     NadekoBot.AllGuildConfigs
                         .Where(gc => gc.CleverbotEnabled)
                         .ToDictionary(gc => gc.GuildId, gc => new Lazy<ChatterBotSession>(() => bot.CreateSession(), true)));
-                }
 
                 sw.Stop();
                 _log.Debug($"Loaded in {sw.Elapsed.TotalSeconds:F2}s");

src/NadekoBot/Modules/Games/Commands/HangmanCommands.cs

@@ -23,7 +23,8 @@ namespace NadekoBot.Modules.Games
             static HangmanCommands()
             {
                 _log = LogManager.GetCurrentClassLogger();
-                typesStr = $"`List of \"{NadekoBot.ModulePrefixes[typeof(Games).Name]}hangman\" term types:`\n" + String.Join(", ", HangmanTermPool.data.Keys);
+                typesStr =
+                    string.Format("`List of \"{0}hangman\" term types:`\n", NadekoBot.ModulePrefixes[typeof(Games).Name]) + String.Join(", ", HangmanTermPool.data.Keys);
             }
 
             [NadekoCommand, Usage, Description, Aliases]

src/NadekoBot/Modules/Games/Commands/PlantAndPickCommands.cs

@@ -29,7 +29,7 @@ namespace NadekoBot.Modules.Games
         /// https://discord.gg/0TYNJfCU4De7YIk8
         /// </summary>
         [Group]
-        public class PlantPickCommands : ModuleBase
+        public class PlantPickCommands : NadekoSubmodule
         {
             private static ConcurrentHashSet<ulong> generationChannels { get; } = new ConcurrentHashSet<ulong>();
             //channelid/message
@@ -103,7 +103,8 @@ namespace NadekoBot.Modules.Games
                                     var sent = await channel.SendFileAsync(
                                         fileStream,
                                         file.Key,
-                                        $"❗ {firstPart} Pick it up by typing `{NadekoBot.ModulePrefixes[typeof(Games).Name]}pick`")
+                                            string.Format("❗ {0} Pick it up by typing `{1}pick`", firstPart,
+                                                NadekoBot.ModulePrefixes[typeof(Games).Name]))
                                             .ConfigureAwait(false);
 
                                     msgs[0] = sent;
@@ -160,7 +161,7 @@ namespace NadekoBot.Modules.Games
                 var imgData = GetRandomCurrencyImage();
                 var vowelFirst = new[] { 'a', 'e', 'i', 'o', 'u' }.Contains(NadekoBot.BotConfig.CurrencyName[0]);
 
-                var msgToSend = $"Oh how Nice! **{Context.User.Username}** planted {(amount == 1 ? (vowelFirst ? "an" : "a") : amount.ToString())} {(amount > 1 ? NadekoBot.BotConfig.CurrencyPluralName : NadekoBot.BotConfig.CurrencyName)}. Pick it using {NadekoBot.ModulePrefixes[typeof(Games).Name]}pick";
+                var msgToSend = $"Oh how Nice! **{Context.User.Username}** planted {(amount == 1 ? (vowelFirst ? "an" : "a") : amount.ToString())} {(amount > 1 ? NadekoBot.BotConfig.CurrencyPluralName : NadekoBot.BotConfig.CurrencyName)}. Pick it using {Prefix}pick";
 
                 IUserMessage msg;
                 using (var toSend = imgData.Value.ToStream())

src/NadekoBot/Modules/Games/Commands/TicTacToe.cs

@@ -307,7 +307,7 @@ namespace NadekoBot.Modules.Games
                                 var del2 = previousMessage?.DeleteAsync();
                                 try { previousMessage = await _channel.EmbedAsync(GetEmbed(reason)); } catch { }
                                 try { await del1; } catch { }
-                                try { await del2; } catch { }
+                                try { if (del2 != null) await del2; } catch { }
                             });
                             curUserIndex ^= 1;
 

src/NadekoBot/Modules/Games/Games.cs

@@ -32,7 +32,6 @@ namespace NadekoBot.Modules.Games
         {
             if (string.IsNullOrWhiteSpace(question))
                 return;
-                var rng = new NadekoRandom();
 
             await Context.Channel.EmbedAsync(new EmbedBuilder().WithColor(NadekoBot.OkColor)
                                .AddField(efb => efb.WithName("❓ Question").WithValue(question).WithIsInline(false))

src/NadekoBot/Modules/Music/Music.cs

@@ -415,8 +415,6 @@ namespace NadekoBot.Modules.Music
             var arg = directory;
             if (string.IsNullOrWhiteSpace(arg))
                 return;
-            try
-            {
             var dir = new DirectoryInfo(arg);
             var fileEnum = dir.GetFiles("*", SearchOption.AllDirectories)
                                 .Where(x => !x.Attributes.HasFlag(FileAttributes.Hidden | FileAttributes.System));
@@ -425,18 +423,19 @@ namespace NadekoBot.Modules.Music
             {
                 try
                 {
-                        await QueueSong(((IGuildUser)Context.User), (ITextChannel)Context.Channel, ((IGuildUser)Context.User).VoiceChannel, file.FullName, true, MusicType.Local).ConfigureAwait(false);
+                    await QueueSong(gusr, (ITextChannel)Context.Channel, gusr.VoiceChannel, file.FullName, true, MusicType.Local).ConfigureAwait(false);
                 }
                 catch (PlaylistFullException)
                 {
                     break;
                 }
-                    catch { }
+                catch
+                {
+                    // ignored
+                }
             }
             await Context.Channel.SendConfirmAsync("🎵 Directory queue complete.").ConfigureAwait(false);
         }
-            catch { }
-        }
 
         [NadekoCommand, Usage, Description, Aliases]
         [RequireContext(ContextType.Guild)]

src/NadekoBot/Modules/Permissions/Commands/CmdCdsCommands.cs

@@ -101,23 +101,23 @@ namespace NadekoBot.Modules.Permissions
                     {
                         return true;
                     }
-                    else
-                    {
                     activeCdsForGuild.Add(new ActiveCooldown()
                     {
                         UserId = user.Id,
                         Command = cmd.Aliases.First().ToLowerInvariant(),
                     });
-                        var t = Task.Run(async () =>
+                    var _ = Task.Run(async () =>
                     {
                         try
                         {
                             await Task.Delay(cdRule.Seconds * 1000);
                             activeCdsForGuild.RemoveWhere(ac => ac.Command == cmd.Aliases.First().ToLowerInvariant() && ac.UserId == user.Id);
                         }
-                            catch { }
+                        catch
-                        });
+                        {
+                            // ignored
                         }
+                    });
                 }
                 return false;
             }

src/NadekoBot/Modules/Permissions/Commands/FilterCommands.cs

@@ -41,8 +41,6 @@ namespace NadekoBot.Modules.Permissions
             }
 
             static FilterCommands()
-            {
-                using (var uow = DbHandler.UnitOfWork())
             {
                 var guildConfigs = NadekoBot.AllGuildConfigs;
 
@@ -57,8 +55,6 @@ namespace NadekoBot.Modules.Permissions
                 WordFilteringServers = new ConcurrentHashSet<ulong>(serverFiltering.Select(gc => gc.GuildId));
 
                 WordFilteringChannels = new ConcurrentHashSet<ulong>(guildConfigs.SelectMany(gc => gc.FilterWordsChannelIds.Select(fwci => fwci.ChannelId)));
-
-                }
             }
 
             [NadekoCommand, Usage, Description, Aliases]

src/NadekoBot/Modules/Searches/Commands/AnimeSearchCommands.cs

@@ -230,7 +230,7 @@ namespace NadekoBot.Modules.Searches
                     var link = "http://anilist.co/api/anime/search/" + Uri.EscapeUriString(query);
                     using (var http = new HttpClient())
                     {
-                        var res = await http.GetStringAsync("http://anilist.co/api/anime/search/" + Uri.EscapeUriString(query) + $"?access_token={anilistToken}").ConfigureAwait(false);
+                        var res = await http.GetStringAsync(link + $"?access_token={anilistToken}").ConfigureAwait(false);
                         var smallObj = JArray.Parse(res)[0];
                         var aniData = await http.GetStringAsync("http://anilist.co/api/anime/" + smallObj["id"] + $"?access_token={anilistToken}").ConfigureAwait(false);
 

src/NadekoBot/Modules/Searches/Commands/OverwatchCommands.cs

@@ -36,7 +36,7 @@ namespace NadekoBot.Modules.Searches
 
                     var rankimg = $"{model.Competitive.rank_img}";
                     var rank = $"{model.Competitive.rank}";
-                    var competitiveplay = $"{model.Games.Competitive.played}";
+                    //var competitiveplay = $"{model.Games.Competitive.played}";
                     if (string.IsNullOrWhiteSpace(rank))
                     {
                         var embed = new EmbedBuilder()

src/NadekoBot/Modules/Searches/Commands/PlaceCommands.cs

@@ -12,7 +12,8 @@ namespace NadekoBot.Modules.Searches
         [Group]
         public class PlaceCommands : ModuleBase
         {
-            private static string typesStr { get; } = $"`List of \"{NadekoBot.ModulePrefixes[typeof(Searches).Name]}place\" tags:`\n" + String.Join(", ", Enum.GetNames(typeof(PlaceType)));
+            private static string typesStr { get; } =
+                string.Format("`List of \"{0}place\" tags:`\n", NadekoBot.ModulePrefixes[typeof(Searches).Name]) + String.Join(", ", Enum.GetNames(typeof(PlaceType)));
 
             public enum PlaceType
             {

src/NadekoBot/Modules/Searches/Commands/StreamNotificationCommands.cs

@@ -103,19 +103,23 @@ namespace NadekoBot.Modules.Searches
                                 oldStatus.IsLive != newStatus.IsLive)
                             {
                                 var server = NadekoBot.Client.GetGuild(fs.GuildId);
-                                if (server == null)
+                                var channel = server?.GetTextChannel(fs.ChannelId);
-                                    return;
-                                var channel = server.GetTextChannel(fs.ChannelId);
                                 if (channel == null)
                                     return;
                                 try
                                 {
                                     var msg = await channel.EmbedAsync(fs.GetEmbed(newStatus)).ConfigureAwait(false);
                                 }
-                                catch { }
+                                catch
+                                {
+                                    // ignored
                                 }
                             }
-                        catch { }
+                        }
+                        catch
+                        {
+                            // ignored
+                        }
                     }));
 
                     FirstPass = false;

src/NadekoBot/Modules/Searches/Searches.cs

@@ -499,12 +499,12 @@ namespace NadekoBot.Modules.Searches
 
                 var data = JsonConvert.DeserializeObject<DefineModel>(res);
 
-                var sense = data.Results.Where(x => x.Senses != null && x.Senses[0].Definition != null).FirstOrDefault()?.Senses[0];
+                var sense = data.Results.FirstOrDefault(x => x.Senses?[0].Definition != null)?.Senses[0];
 
                 if (sense?.Definition == null)
                     return;
 
-                string definition = sense.Definition.ToString();
+                var definition = sense.Definition.ToString();
                 if (!(sense.Definition is string))
                     definition = ((JArray)JToken.Parse(sense.Definition.ToString())).First.ToString();
 
@@ -536,7 +536,7 @@ namespace NadekoBot.Modules.Searches
             }
 
             await Context.Channel.TriggerTypingAsync().ConfigureAwait(false);
-            string res = "";
+            var res = "";
             using (var http = new HttpClient())
             {
                 http.DefaultRequestHeaders.Clear();
@@ -548,7 +548,7 @@ namespace NadekoBot.Modules.Searches
             {
                 var items = JObject.Parse(res);
                 var item = items["defs"]["def"];
-                var hashtag = item["hashtag"].ToString();
+                //var hashtag = item["hashtag"].ToString();
                 var link = item["uri"].ToString();
                 var desc = item["text"].ToString();
                 await Context.Channel.EmbedAsync(new EmbedBuilder().WithOkColor()

src/NadekoBot/Modules/Utility/Commands/InfoCommands.cs

@@ -32,7 +32,6 @@ namespace NadekoBot.Modules.Utility
                 var voicechn = (await guild.GetVoiceChannelsAsync()).Count();
 
                 var createdAt = new DateTime(2015, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(guild.Id >> 22);
-                var sb = new StringBuilder();
                 var users = await guild.GetUsersAsync().ConfigureAwait(false);
                 var features = string.Join("\n", guild.Features);
                 if (string.IsNullOrWhiteSpace(features))
@@ -45,13 +44,13 @@ namespace NadekoBot.Modules.Utility
                     .AddField(fb => fb.WithName("**Members**").WithValue(users.Count.ToString()).WithIsInline(true))
                     .AddField(fb => fb.WithName("**Text Channels**").WithValue(textchn.ToString()).WithIsInline(true))
                     .AddField(fb => fb.WithName("**Voice Channels**").WithValue(voicechn.ToString()).WithIsInline(true))
-                    .AddField(fb => fb.WithName("**Created At**").WithValue($"{createdAt.ToString("dd.MM.yyyy HH:mm")}").WithIsInline(true))
+                    .AddField(fb => fb.WithName("**Created At**").WithValue($"{createdAt:dd.MM.yyyy HH:mm}").WithIsInline(true))
                     .AddField(fb => fb.WithName("**Region**").WithValue(guild.VoiceRegionId.ToString()).WithIsInline(true))
                     .AddField(fb => fb.WithName("**Roles**").WithValue((guild.Roles.Count - 1).ToString()).WithIsInline(true))
                     .AddField(fb => fb.WithName("**Features**").WithValue(features).WithIsInline(true))
                     .WithImageUrl(guild.IconUrl)
                     .WithColor(NadekoBot.OkColor);
-                if (guild.Emojis.Count() > 0)
+                if (guild.Emojis.Any())
                 {
                     embed.AddField(fb => fb.WithName($"**Custom Emojis ({guild.Emojis.Count})**").WithValue(string.Join(" ", guild.Emojis.Shuffle().Take(25).Select(e => $"{e.Name} <:{e.Name}:{e.Id}>"))));
                 }
@@ -71,7 +70,7 @@ namespace NadekoBot.Modules.Utility
                     .WithTitle(ch.Name)
                     .WithDescription(ch.Topic?.SanitizeMentions())
                     .AddField(fb => fb.WithName("**ID**").WithValue(ch.Id.ToString()).WithIsInline(true))
-                    .AddField(fb => fb.WithName("**Created At**").WithValue($"{createdAt.ToString("dd.MM.yyyy HH:mm")}").WithIsInline(true))
+                    .AddField(fb => fb.WithName("**Created At**").WithValue($"{createdAt:dd.MM.yyyy HH:mm}").WithIsInline(true))
                     .AddField(fb => fb.WithName("**Users**").WithValue(usercount.ToString()).WithIsInline(true))
                     .WithColor(NadekoBot.OkColor);
                 await Context.Channel.EmbedAsync(embed).ConfigureAwait(false);
@@ -81,7 +80,6 @@ namespace NadekoBot.Modules.Utility
             [RequireContext(ContextType.Guild)]
             public async Task UserInfo(IGuildUser usr = null)
             {
-                var channel = (ITextChannel)Context.Channel;
                 var user = usr ?? Context.User as IGuildUser;
 
                 if (user == null)
@@ -95,7 +93,7 @@ namespace NadekoBot.Modules.Utility
                 }
                 embed.AddField(fb => fb.WithName("**ID**").WithValue(user.Id.ToString()).WithIsInline(true))
                     .AddField(fb => fb.WithName("**Joined Server**").WithValue($"{user.JoinedAt?.ToString("dd.MM.yyyy HH:mm") ?? "unavail."}").WithIsInline(true))
-                    .AddField(fb => fb.WithName("**Joined Discord**").WithValue($"{user.CreatedAt.ToString("dd.MM.yyyy HH:mm")}").WithIsInline(true))
+                    .AddField(fb => fb.WithName("**Joined Discord**").WithValue($"{user.CreatedAt:dd.MM.yyyy HH:mm}").WithIsInline(true))
                     .AddField(fb => fb.WithName("**Roles**").WithValue($"**({user.RoleIds.Count - 1})** - {string.Join("\n", user.GetRoles().Take(10).Where(r => r.Id != r.Guild.EveryoneRole.Id).Select(r => r.Name)).SanitizeMentions()}").WithIsInline(true))
                     .WithColor(NadekoBot.OkColor);
 

src/NadekoBot/Modules/Utility/Commands/MessageRepeater.cs

@@ -91,7 +91,7 @@ namespace NadekoBot.Modules.Utility
                 public void Reset()
                 {
                     source.Cancel();
-                    var t = Task.Run(Run);
+                    var _ = Task.Run(Run);
                 }
 
                 public void Stop()

src/NadekoBot/Modules/Utility/Commands/Remind.cs

@@ -45,15 +45,15 @@ namespace NadekoBot.Modules.Utility
 
                 foreach (var r in reminders)
                 {
-                    try { var t = StartReminder(r); } catch (Exception ex) { _log.Warn(ex); }
+                    Task.Run(() => StartReminder(r));
                 }
             }
 
             private static async Task StartReminder(Reminder r)
             {
                 var now = DateTime.Now;
-                var twoMins = new TimeSpan(0, 2, 0);
+
-                TimeSpan time = r.When - now;
+                var time = r.When - now;
 
                 if (time.TotalMilliseconds > int.MaxValue)
                     return;

src/NadekoBot/Modules/Utility/Utility.cs

@@ -468,7 +468,6 @@ namespace NadekoBot.Modules.Utility
         [OwnerOnly]
         public async Task SaveChat(int cnt)
         {
-            var sb = new StringBuilder();
             var msgs = new List<IMessage>(cnt);
             await Context.Channel.GetMessagesAsync(cnt).ForEachAsync(dled => msgs.AddRange(dled)).ConfigureAwait(false);
 

src/NadekoBot/Services/Database/NadekoContext.cs

@@ -132,7 +132,7 @@ namespace NadekoBot.Services.Database
         {
             #region QUOTES
             
-            var quoteEntity = modelBuilder.Entity<Quote>();
+            //var quoteEntity = modelBuilder.Entity<Quote>();
 
             #endregion
             
@@ -166,7 +166,7 @@ namespace NadekoBot.Services.Database
             #endregion
 
             #region BotConfig
-            var botConfigEntity = modelBuilder.Entity<BotConfig>();
+            //var botConfigEntity = modelBuilder.Entity<BotConfig>();
             //botConfigEntity
             //    .HasMany(c => c.ModulePrefixes)
             //    .WithOne(mp => mp.BotConfig)

src/NadekoBot/Services/Impl/StatsService.cs

@@ -96,18 +96,21 @@ namespace NadekoBot.Services.Impl
                             content.Headers.Clear();
                             content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
 
-                            var res = await http.PostAsync("https://www.carbonitex.net/discord/data/botdata.php", content).ConfigureAwait(false);
+                            await http.PostAsync("https://www.carbonitex.net/discord/data/botdata.php", content).ConfigureAwait(false);
                         }
                     };
                 }
-                catch { }
+                catch
+                {
+                    // ignored
+                }
             }, null, TimeSpan.FromHours(1), TimeSpan.FromHours(1));
         }
 
         public void Initialize()
         {
-            var guilds = this.client.GetGuilds();
+            var guilds = this.client.GetGuilds().ToArray();
-            _textChannels = guilds.Sum(g => g.Channels.Where(cx => cx is ITextChannel).Count());
+            _textChannels = guilds.Sum(g => g.Channels.Count(cx => cx is ITextChannel));
             _voiceChannels = guilds.Sum(g => g.Channels.Count) - _textChannels;
         }
 

src/NadekoBot/Services/NadekoRandom.cs

@@ -41,7 +41,6 @@ namespace NadekoBot.Services
                 return minValue;
             var bytes = new byte[sizeof(int)];
             rng.GetBytes(bytes);
-            var num = BitConverter.ToInt32(bytes, 0);
             var sign = Math.Sign(BitConverter.ToInt32(bytes, 0));
             return (sign * BitConverter.ToInt32(bytes, 0)) % (maxValue - minValue) + minValue;
         }