Fixed around 140 wrong namings and other refactorings which were marked as warnings

src/NadekoBot.Coordinator/CoordStartup.cs

@@ -12,9 +12,7 @@ namespace NadekoBot.Coordinator
         public IConfiguration Configuration { get; }
         
         public CoordStartup(IConfiguration config)
-        {
-            Configuration = config;
-        }
+            => Configuration = config;
 
         public void ConfigureServices(IServiceCollection services)
         {

src/NadekoBot.Coordinator/Services/CoordinatorRunner.cs

@@ -6,7 +6,6 @@ using System.Linq;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Hosting;
 using Serilog;
 using YamlDotNet.Serialization;
@@ -30,7 +29,7 @@ namespace NadekoBot.Coordinator
         private readonly Random _rng;
         private bool _gracefulImminent;
         
-        public CoordinatorRunner(IConfiguration configuration)
+        public CoordinatorRunner()
         {
             _serializer = new();
             _deserializer = new();
@@ -91,7 +90,7 @@ namespace NadekoBot.Coordinator
                         var shardIds = Enumerable.Range(0, 1) // shard 0 is always first
                             .Append((int)((117523346618318850 >> 22) % _config.TotalShards)) // then nadeko server shard
                             .Concat(Enumerable.Range(1, _config.TotalShards - 1)
-                                .OrderBy(x => _rng.Next())) // then all other shards in a random order
+                                .OrderBy(_ => _rng.Next())) // then all other shards in a random order
                             .Distinct()
                             .ToList();
                         
@@ -191,8 +190,7 @@ namespace NadekoBot.Coordinator
         }
 
         private Process StartShardProcess(int shardId)
-        {
-            return Process.Start(new ProcessStartInfo()
+            => Process.Start(new ProcessStartInfo()
             {
                 FileName = _config.ShardStartCommand,
                 Arguments = string.Format(_config.ShardStartArgs,
@@ -205,7 +203,6 @@ namespace NadekoBot.Coordinator
                 // CreateNoWindow = true,
                 // UseShellExecute = false,
             });
-        }
 
         public bool Heartbeat(int shardId, int guildCount, ConnState state)
         {
@@ -239,7 +236,6 @@ namespace NadekoBot.Coordinator
         {
             lock (locker)
             {
-                ref var toSave = ref _config;
                 SaveConfig(new Config(
                     totalShards,
                     _config.RecheckIntervalMs,
@@ -284,7 +280,7 @@ namespace NadekoBot.Coordinator
                 for (var shardId = 0; shardId < _shardStatuses.Length; shardId++)
                 {
                     var status = _shardStatuses[shardId];
-                    if (status.Process is Process p)
+                    if (status.Process is { } p)
                     {
                         p.Kill();
                         p.Dispose();
@@ -346,7 +342,7 @@ namespace NadekoBot.Coordinator
 
                 if (savedState.StatusObjects.Count != _config.TotalShards)
                 {
-                    Log.Error("Unable to restore old state because shard count doesn't match.");
+                    Log.Error("Unable to restore old state because shard count doesn't match");
                     File.Move(GRACEFUL_STATE_PATH, GRACEFUL_STATE_BACKUP_PATH, overwrite: true);
                     return false;
                 }
@@ -357,7 +353,7 @@ namespace NadekoBot.Coordinator
                 {
                     var statusObj = savedState.StatusObjects[shardId];
                     Process p = null;
-                    if (statusObj.Pid is int pid)
+                    if (statusObj.Pid is { } pid)
                     {
                         try
                         {
@@ -365,7 +361,7 @@ namespace NadekoBot.Coordinator
                         }
                         catch (Exception ex)
                         {
-                            Log.Warning(ex, $"Process for shard {shardId} is not runnning.");
+                            Log.Warning(ex, "Process for shard {ShardId} is not runnning", shardId);
                         }
                     }
 

src/NadekoBot.Coordinator/Services/CoordinatorService.cs

@@ -5,14 +5,12 @@ using Grpc.Core;
 
 namespace NadekoBot.Coordinator
 {
-    public sealed class CoordinatorService : NadekoBot.Coordinator.Coordinator.CoordinatorBase
+    public sealed class CoordinatorService : Coordinator.CoordinatorBase
     {
         private readonly CoordinatorRunner _runner;
 
         public CoordinatorService(CoordinatorRunner runner)
-        {
-            _runner = runner;
-        }
+            => _runner = runner;
 
         public override Task<HeartbeatReply> Heartbeat(HeartbeatRequest request, ServerCallContext context)
         {

src/NadekoBot.Coordinator/Shared/JsonStatusObject.cs

@@ -1,6 +1,4 @@
-using System;
-
-namespace NadekoBot.Coordinator
+namespace NadekoBot.Coordinator
 {
     public class JsonStatusObject
     {

src/NadekoBot.Generators/Cloneable/CloneableGenerator.cs

@@ -6,7 +6,6 @@ using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Text;
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -16,71 +15,69 @@ namespace Cloneable
     [Generator]
     public class CloneableGenerator : ISourceGenerator
     {
-        private const string PreventDeepCopyKeyString = "PreventDeepCopy";
-        private const string ExplicitDeclarationKeyString = "ExplicitDeclaration";
+        private const string PREVENT_DEEP_COPY_KEY_STRING = "PreventDeepCopy";
+        private const string EXPLICIT_DECLARATION_KEY_STRING = "ExplicitDeclaration";
 
-        private const string CloneableNamespace = "Cloneable";
-        private const string CloneableAttributeString = "CloneableAttribute";
-        private const string CloneAttributeString = "CloneAttribute";
-        private const string IgnoreCloneAttributeString = "IgnoreCloneAttribute";
+        private const string CLONEABLE_NAMESPACE = "Cloneable";
+        private const string CLONEABLE_ATTRIBUTE_STRING = "CloneableAttribute";
+        private const string CLONE_ATTRIBUTE_STRING = "CloneAttribute";
+        private const string IGNORE_CLONE_ATTRIBUTE_STRING = "IgnoreCloneAttribute";
 
-        private const string cloneableAttributeText = @"// <AutoGenerated/>
+        private const string CLONEABLE_ATTRIBUTE_TEXT = @"// <AutoGenerated/>
 using System;
 
-namespace " + CloneableNamespace + @"
+namespace " + CLONEABLE_NAMESPACE + @"
 {
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct, Inherited = true, AllowMultiple = false)]
-    public sealed class " + CloneableAttributeString + @" : Attribute
+    public sealed class " + CLONEABLE_ATTRIBUTE_STRING + @" : Attribute
     {
-        public " + CloneableAttributeString + @"()
+        public " + CLONEABLE_ATTRIBUTE_STRING + @"()
         {
         }
 
-        public bool " + ExplicitDeclarationKeyString + @" { get; set; }
+        public bool " + EXPLICIT_DECLARATION_KEY_STRING + @" { get; set; }
     }
 }
 ";
 
-        private const string clonePropertyAttributeText = @"// <AutoGenerated/>
+        private const string CLONE_PROPERTY_ATTRIBUTE_TEXT = @"// <AutoGenerated/>
 using System;
 
-namespace " + CloneableNamespace + @"
+namespace " + CLONEABLE_NAMESPACE + @"
 {
     [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
-    public sealed class " + CloneAttributeString + @" : Attribute
+    public sealed class " + CLONE_ATTRIBUTE_STRING + @" : Attribute
     {
-        public " + CloneAttributeString + @"()
+        public " + CLONE_ATTRIBUTE_STRING + @"()
         {
         }
 
-        public bool " + PreventDeepCopyKeyString + @" { get; set; }
+        public bool " + PREVENT_DEEP_COPY_KEY_STRING + @" { get; set; }
     }
 }
 ";
 
-        private const string ignoreClonePropertyAttributeText = @"// <AutoGenerated/>
+        private const string IGNORE_CLONE_PROPERTY_ATTRIBUTE_TEXT = @"// <AutoGenerated/>
 using System;
 
-namespace " + CloneableNamespace + @"
+namespace " + CLONEABLE_NAMESPACE + @"
 {
     [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
-    public sealed class " + IgnoreCloneAttributeString + @" : Attribute
+    public sealed class " + IGNORE_CLONE_ATTRIBUTE_STRING + @" : Attribute
     {
-        public " + IgnoreCloneAttributeString + @"()
+        public " + IGNORE_CLONE_ATTRIBUTE_STRING + @"()
         {
         }
     }
 }
 ";
 
-        private INamedTypeSymbol? cloneableAttribute;
-        private INamedTypeSymbol? ignoreCloneAttribute;
-        private INamedTypeSymbol? cloneAttribute;
+        private INamedTypeSymbol? _cloneableAttribute;
+        private INamedTypeSymbol? _ignoreCloneAttribute;
+        private INamedTypeSymbol? _cloneAttribute;
 
         public void Initialize(GeneratorInitializationContext context)
-        {
-            context.RegisterForSyntaxNotifications(() => new SyntaxReceiver());
-        }
+            => context.RegisterForSyntaxNotifications(() => new SyntaxReceiver());
 
         public void Execute(GeneratorExecutionContext context)
         {
@@ -100,36 +97,36 @@ namespace " + CloneableNamespace + @"
             var classSymbols = GetClassSymbols(compilation, receiver);
             foreach (var classSymbol in classSymbols)
             {
-                if (!classSymbol.TryGetAttribute(cloneableAttribute!, out var attributes))
+                if (!classSymbol.TryGetAttribute(_cloneableAttribute!, out var attributes))
                     continue;
 
                 var attribute = attributes.Single();
-                var isExplicit = (bool?)attribute.NamedArguments.FirstOrDefault(e => e.Key.Equals(ExplicitDeclarationKeyString)).Value.Value ?? false;
+                var isExplicit = (bool?)attribute.NamedArguments.FirstOrDefault(e => e.Key.Equals(EXPLICIT_DECLARATION_KEY_STRING)).Value.Value ?? false;
                 context.AddSource($"{classSymbol.Name}_cloneable.g.cs", SourceText.From(CreateCloneableCode(classSymbol, isExplicit), Encoding.UTF8));
             }
         }
 
         private void InitAttributes(Compilation compilation)
         {
-            cloneableAttribute = compilation.GetTypeByMetadataName($"{CloneableNamespace}.{CloneableAttributeString}")!;
-            cloneAttribute = compilation.GetTypeByMetadataName($"{CloneableNamespace}.{CloneAttributeString}")!;
-            ignoreCloneAttribute = compilation.GetTypeByMetadataName($"{CloneableNamespace}.{IgnoreCloneAttributeString}")!;
+            _cloneableAttribute = compilation.GetTypeByMetadataName($"{CLONEABLE_NAMESPACE}.{CLONEABLE_ATTRIBUTE_STRING}")!;
+            _cloneAttribute = compilation.GetTypeByMetadataName($"{CLONEABLE_NAMESPACE}.{CLONE_ATTRIBUTE_STRING}")!;
+            _ignoreCloneAttribute = compilation.GetTypeByMetadataName($"{CLONEABLE_NAMESPACE}.{IGNORE_CLONE_ATTRIBUTE_STRING}")!;
         }
 
         private static Compilation GetCompilation(GeneratorExecutionContext context)
         {
             var options = context.Compilation.SyntaxTrees.First().Options as CSharpParseOptions;
 
-            var compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(cloneableAttributeText, Encoding.UTF8), options)).
-                AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(clonePropertyAttributeText, Encoding.UTF8), options)).
-                AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(ignoreClonePropertyAttributeText, Encoding.UTF8), options));
+            var compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(CLONEABLE_ATTRIBUTE_TEXT, Encoding.UTF8), options)).
+                AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(CLONE_PROPERTY_ATTRIBUTE_TEXT, Encoding.UTF8), options)).
+                AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(IGNORE_CLONE_PROPERTY_ATTRIBUTE_TEXT, Encoding.UTF8), options));
             return compilation;
         }
 
         private string CreateCloneableCode(INamedTypeSymbol classSymbol, bool isExplicit)
         {
             string namespaceName = classSymbol.ContainingNamespace.ToDisplayString();
-            var fieldAssignmentsCode = GenerateFieldAssignmentsCode(classSymbol, isExplicit);
+            var fieldAssignmentsCode = GenerateFieldAssignmentsCode(classSymbol, isExplicit).ToList();
             var fieldAssignmentsCodeSafe = fieldAssignmentsCode.Select(x =>
             {
                 if (x.isCloneable)
@@ -187,9 +184,9 @@ namespace {namespaceName}
         {
             var fieldNames = GetCloneableProperties(classSymbol, isExplicit);
 
-            var fieldAssignments = fieldNames.Select(field => IsFieldCloneable(field, classSymbol)).
-                OrderBy(x => x.isCloneable).
-                Select(x => (GenerateAssignmentCode(x.item.Name, x.isCloneable), x.isCloneable));
+            var fieldAssignments = fieldNames.Select(field => IsFieldCloneable(field, classSymbol))
+                .OrderBy(x => x.isCloneable)
+                .Select(x => (GenerateAssignmentCode(x.item.Name, x.isCloneable), x.isCloneable));
             return fieldAssignments;
         }
 
@@ -210,19 +207,17 @@ namespace {namespaceName}
                 return (x, false);
             }
 
-            if (!x.Type.TryGetAttribute(cloneableAttribute!, out var attributes))
+            if (!x.Type.TryGetAttribute(_cloneableAttribute!, out var attributes))
             {
                 return (x, false);
             }
 
-            var preventDeepCopy = (bool?)attributes.Single().NamedArguments.FirstOrDefault(e => e.Key.Equals(PreventDeepCopyKeyString)).Value.Value ?? false;
+            var preventDeepCopy = (bool?)attributes.Single().NamedArguments.FirstOrDefault(e => e.Key.Equals(PREVENT_DEEP_COPY_KEY_STRING)).Value.Value ?? false;
             return (item: x, !preventDeepCopy);
         }
 
         private string GetAccessModifier(INamedTypeSymbol classSymbol)
-        {
-            return classSymbol.DeclaredAccessibility.ToString().ToLowerInvariant();
-        }
+            => classSymbol.DeclaredAccessibility.ToString().ToLowerInvariant();
 
         private IEnumerable<IPropertySymbol> GetCloneableProperties(ITypeSymbol classSymbol, bool isExplicit)
         {
@@ -231,18 +226,16 @@ namespace {namespaceName}
                             x.CanBeReferencedByName);
             if (isExplicit)
             {
-                return targetSymbolMembers.Where(x => x.HasAttribute(cloneAttribute!));
+                return targetSymbolMembers.Where(x => x.HasAttribute(_cloneAttribute!));
             }
             else
             {
-                return targetSymbolMembers.Where(x => !x.HasAttribute(ignoreCloneAttribute!));
+                return targetSymbolMembers.Where(x => !x.HasAttribute(_ignoreCloneAttribute!));
             }
         }
 
         private static IEnumerable<INamedTypeSymbol> GetClassSymbols(Compilation compilation, SyntaxReceiver receiver)
-        {
-            return receiver.CandidateClasses.Select(clazz => GetClassSymbol(compilation, clazz));
-        }
+            => receiver.CandidateClasses.Select(clazz => GetClassSymbol(compilation, clazz));
 
         private static INamedTypeSymbol GetClassSymbol(Compilation compilation, ClassDeclarationSyntax clazz)
         {
@@ -253,9 +246,9 @@ namespace {namespaceName}
 
         private static void InjectCloneableAttributes(GeneratorExecutionContext context)
         {
-            context.AddSource(CloneableAttributeString, SourceText.From(cloneableAttributeText, Encoding.UTF8));
-            context.AddSource(CloneAttributeString, SourceText.From(clonePropertyAttributeText, Encoding.UTF8));
-            context.AddSource(IgnoreCloneAttributeString, SourceText.From(ignoreClonePropertyAttributeText, Encoding.UTF8));
+            context.AddSource(CLONEABLE_ATTRIBUTE_STRING, SourceText.From(CLONEABLE_ATTRIBUTE_TEXT, Encoding.UTF8));
+            context.AddSource(CLONE_ATTRIBUTE_STRING, SourceText.From(CLONE_PROPERTY_ATTRIBUTE_TEXT, Encoding.UTF8));
+            context.AddSource(IGNORE_CLONE_ATTRIBUTE_STRING, SourceText.From(IGNORE_CLONE_PROPERTY_ATTRIBUTE_TEXT, Encoding.UTF8));
         }
     }
 }

src/NadekoBot.Generators/Cloneable/SymbolExtensions.cs

@@ -18,9 +18,7 @@ namespace Cloneable
         }
 
         public static bool HasAttribute(this ISymbol symbol, INamedTypeSymbol attributeType)
-        {
-            return symbol.GetAttributes()
+            => symbol.GetAttributes()
                 .Any(a => SymbolEqualityComparer.Default.Equals(a.AttributeClass, attributeType));
     }
-    }
 }

src/NadekoBot.Generators/Command/CommandAttributesGenerator.cs

@@ -76,14 +76,14 @@ public class CmdAttribute : System.Attribute
         var compilationMethods = context.CompilationProvider.Combine(methods.Collect());
 
         context.RegisterSourceOutput(compilationMethods,
-            static (ctx, tuple) => RegisterAction(in ctx, tuple.Left, in tuple.Right!));
+            static (ctx, tuple) => RegisterAction(in ctx, tuple.Left, in tuple.Right));
     }
 
     private static void RegisterAction(in SourceProductionContext ctx,
         Compilation comp,
-        in ImmutableArray<MethodDeclarationSyntax> methods)
+        in ImmutableArray<MethodDeclarationSyntax?> methods)
     {
-        if (methods.IsDefaultOrEmpty)
+        if (methods is { IsDefaultOrEmpty: true })
             return;
 
         var models = GetModels(comp, methods, ctx.CancellationToken);
@@ -136,12 +136,17 @@ public class CmdAttribute : System.Attribute
     }
 
     private static IReadOnlyCollection<FileModel> GetModels(Compilation compilation,
-        in ImmutableArray<MethodDeclarationSyntax> methods,
+        in ImmutableArray<MethodDeclarationSyntax?> inputMethods,
         CancellationToken cancel)
     {
         var models = new List<FileModel>();
 
-        var methodModels = methods.Select(x => MethodDeclarationToMethodModel(compilation, x));
+        var methods = inputMethods
+            .Where(static x => x is not null)
+            .Distinct();
+        
+        var methodModels = methods
+            .Select(x => MethodDeclarationToMethodModel(compilation, x!));
 
         var groups = methodModels
             .GroupBy(static x => $"{x.Namespace}.{string.Join(".", x.Classes)}");
@@ -172,6 +177,7 @@ public class CmdAttribute : System.Attribute
         var semanticModel = comp.GetSemanticModel(decl.SyntaxTree);
         var methodModel = new MethodModel(
             @params: decl.ParameterList.Parameters
+                .Where(p => p.Type is not null)
                 .Select(p =>
                 {
                     var prefix = p.Modifiers.Any(static x => x.IsKind(SyntaxKind.ParamsKeyword))
@@ -180,8 +186,8 @@ public class CmdAttribute : System.Attribute
 
                     var type = semanticModel
                         .GetTypeInfo(p.Type!)
-                        .Type!
-                        .ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat);
+                        .Type
+                        ?.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat);
 
 
                     var name = p.Identifier.Text;

src/NadekoBot.Tests/BotStringsTests.cs

@@ -40,7 +40,7 @@ namespace NadekoBot.Tests
         }
 
         private static string[] GetCommandMethodNames()
-            => typeof(NadekoBot.Bot).Assembly
+            => typeof(Bot).Assembly
                 .GetExportedTypes()
                 .Where(type => type.IsClass && !type.IsAbstract)
                 .Where(type => typeof(NadekoModule).IsAssignableFrom(type) // if its a top level module

src/NadekoBot.Tests/GroupGreetTests.cs

@@ -1,5 +1,3 @@
-using System.Collections;
-using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using NadekoBot.Extensions;
@@ -14,9 +12,7 @@ namespace NadekoBot.Tests
 
         [SetUp]
         public void Setup()
-        {
-            _grouper = new GreetGrouper<int>();
-        }
+            => _grouper = new GreetGrouper<int>();
 
         [Test]
         public void CreateTest()

src/NadekoBot.Tests/IndexedCollectionTests.cs

@@ -115,7 +115,7 @@ namespace NadekoBot.Tests
         [Test]
         public void ContainsTest()
         {
-            var subCol = new ShopEntry[]
+            var subCol = new[]
             {
                 new ShopEntry() { Id = 111 },
                 new ShopEntry() { Id = 222 },

src/NadekoBot.Tests/KwumTests.cs

@@ -1,5 +1,4 @@
-using System.Linq;
-using NadekoBot.Common;
+using NadekoBot.Common;
 using NUnit.Framework;
 
 namespace NadekoBot.Tests

src/NadekoBot.Tests/Random.cs

@@ -9,9 +9,7 @@ namespace NadekoBot.Tests
     {
         [SetUp]
         public void Setup()
-        {
-            Console.OutputEncoding = Encoding.UTF8;
-        }
+            => Console.OutputEncoding = Encoding.UTF8;
 
         [Test]
         public void Utf8CodepointsToEmoji()

src/NadekoBot.VotesApi/Common/AuthHandler.cs

@@ -6,7 +6,6 @@ using Microsoft.AspNetCore.Authentication;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
-using NadekoBot.VotesApi.Controllers;
 
 namespace NadekoBot.VotesApi
 {
@@ -24,9 +23,7 @@ namespace NadekoBot.VotesApi
             ISystemClock clock,
             IConfiguration conf)
             : base(options, logger, encoder, clock)
-        {
-            _conf = conf;
-        }
+            => _conf = conf;
 
         protected override Task<AuthenticateResult> HandleAuthenticateAsync()
         {

src/NadekoBot.VotesApi/Common/TopggVoteWebhookModel.cs

@@ -23,7 +23,7 @@
         public bool Weekend { get; set; }
         
         /// <summary>
-        /// Query string params found on the /bot/:ID/vote page. Example: ?a=1&b=2.
+        /// Query string params found on the /bot/:ID/vote page. Example: ?a=1&amp;b=2.
         /// </summary>
         public string Query { get; set; }
     }

src/NadekoBot.VotesApi/Controllers/DiscordsController.cs

@@ -11,10 +11,10 @@ namespace NadekoBot.VotesApi.Controllers
     [Route("[controller]")]
     public class DiscordsController : ControllerBase
     {
-        private readonly ILogger<TopGgController> _logger;
+        private readonly ILogger<DiscordsController> _logger;
         private readonly IVotesCache _cache;
 
-        public DiscordsController(ILogger<TopGgController> logger, IVotesCache cache)
+        public DiscordsController(ILogger<DiscordsController> logger, IVotesCache cache)
         {
             _logger = logger;
             _cache = cache;
@@ -26,7 +26,7 @@ namespace NadekoBot.VotesApi.Controllers
         {
             var votes = await _cache.GetNewDiscordsVotesAsync();
             if(votes.Count > 0)
-                _logger.LogInformation("Sending {NewDiscordsVotes} new discords votes.", votes.Count);
+                _logger.LogInformation("Sending {NewDiscordsVotes} new discords votes", votes.Count);
             return votes;
         }
     }

src/NadekoBot.VotesApi/Controllers/TopGgController.cs

@@ -26,7 +26,7 @@ namespace NadekoBot.VotesApi.Controllers
         {
             var votes = await _cache.GetNewTopGgVotesAsync();
             if(votes.Count > 0)
-                _logger.LogInformation("Sending {NewTopggVotes} new topgg votes.", votes.Count);
+                _logger.LogInformation("Sending {NewTopggVotes} new topgg votes", votes.Count);
             
             return votes;
         }

src/NadekoBot.VotesApi/Controllers/WebhookController.cs

@@ -1,8 +1,6 @@
-using System;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using NadekoBot.VotesApi.Services;
 
@@ -13,13 +11,11 @@ namespace NadekoBot.VotesApi.Controllers
     {
         private readonly ILogger<WebhookController> _logger;
         private readonly IVotesCache _votesCache;
-        private readonly IConfiguration _conf;
 
-        public WebhookController(ILogger<WebhookController> logger, IVotesCache votesCache, IConfiguration conf)
+        public WebhookController(ILogger<WebhookController> logger, IVotesCache votesCache)
         {
             _logger = logger;
             _votesCache = votesCache;
-            _conf = conf;
         }
         
         [HttpPost("/discordswebhook")]

src/NadekoBot.VotesApi/Program.cs

@@ -1,23 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging;
+using NadekoBot.VotesApi;
 
-namespace NadekoBot.VotesApi
-{
-    public class Program
-    {
-        public static void Main(string[] args)
-        {
-            CreateHostBuilder(args).Build().Run();
-        }
+CreateHostBuilder(args).Build().Run();
 
-        public static IHostBuilder CreateHostBuilder(string[] args) =>
+static IHostBuilder CreateHostBuilder(string[] args) =>
     Host.CreateDefaultBuilder(args)
         .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); });
-    }
-}

src/NadekoBot.VotesApi/Services/FileVotesCache.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text.Json;
@@ -10,37 +9,33 @@ namespace NadekoBot.VotesApi.Services
 {
     public class FileVotesCache : IVotesCache
     {
-        private const string statsFile = "store/stats.json";
-        private const string topggFile = "store/topgg.json";
-        private const string discordsFile = "store/discords.json";
+        // private const string STATS_FILE = "store/stats.json";
+        private const string TOPGG_FILE = "store/topgg.json";
+        private const string DISCORDS_FILE = "store/discords.json";
 
-        private readonly SemaphoreSlim locker = new SemaphoreSlim(1, 1);
+        private readonly SemaphoreSlim _locker = new SemaphoreSlim(1, 1);
 
         public FileVotesCache()
         {
             if (!Directory.Exists("store"))
                 Directory.CreateDirectory("store");
             
-            if(!File.Exists(topggFile))
-                File.WriteAllText(topggFile, "[]");
+            if(!File.Exists(TOPGG_FILE))
+                File.WriteAllText(TOPGG_FILE, "[]");
             
-            if(!File.Exists(discordsFile))
-                File.WriteAllText(discordsFile, "[]");
+            if(!File.Exists(DISCORDS_FILE))
+                File.WriteAllText(DISCORDS_FILE, "[]");
         }
 
         public ITask AddNewTopggVote(string userId)
-        {
-            return AddNewVote(topggFile, userId);
-        }
+            => AddNewVote(TOPGG_FILE, userId);
 
         public ITask AddNewDiscordsVote(string userId)
-        {
-            return AddNewVote(discordsFile, userId);
-        }
+            => AddNewVote(DISCORDS_FILE, userId);
 
         private async ITask AddNewVote(string file, string userId)
         {
-            await locker.WaitAsync();
+            await _locker.WaitAsync();
             try
             {
                 var votes = await GetVotesAsync(file);
@@ -49,7 +44,7 @@ namespace NadekoBot.VotesApi.Services
             }
             finally
             {
-                locker.Release();
+                _locker.Release();
             }
         }
 
@@ -66,14 +61,14 @@ namespace NadekoBot.VotesApi.Services
         }
 
         private ITask<List<Vote>> EvictTopggVotes()
-            => EvictVotes(topggFile);
+            => EvictVotes(TOPGG_FILE);
 
         private ITask<List<Vote>> EvictDiscordsVotes()
-            => EvictVotes(discordsFile);
+            => EvictVotes(DISCORDS_FILE);
 
         private async ITask<List<Vote>> EvictVotes(string file)
         {
-            await locker.WaitAsync();
+            await _locker.WaitAsync();
             try
             {
 
@@ -91,7 +86,7 @@ namespace NadekoBot.VotesApi.Services
             }
             finally
             {
-                locker.Release();
+                _locker.Release();
             }
         }
 

src/NadekoBot.VotesApi/Startup.cs

@@ -11,19 +11,18 @@ namespace NadekoBot.VotesApi
 {
     public class Startup
     {
-        public Startup(IConfiguration configuration)
-        {
-            Configuration = configuration;
-        }
-
         public IConfiguration Configuration { get; }
         
+        public Startup(IConfiguration configuration)
+            => Configuration = configuration;
+
+
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddControllers();
             services.AddSingleton<IVotesCache, FileVotesCache>();
-            services.AddSwaggerGen(c =>
+            services.AddSwaggerGen(static c =>
             {
                 c.SwaggerDoc("v1", new OpenApiInfo { Title = "NadekoBot.VotesApi", Version = "v1" });
             });
@@ -36,13 +35,13 @@ namespace NadekoBot.VotesApi
                 });
             
             services
-                .AddAuthorization(opts =>
+                .AddAuthorization(static opts =>
                 {
                     opts.DefaultPolicy = new AuthorizationPolicyBuilder(AuthHandler.SchemeName)
-                        .RequireAssertion(x => false)
+                        .RequireAssertion(static _ => false)
                         .Build();
-                    opts.AddPolicy(Policies.DiscordsAuth, policy => policy.RequireClaim(AuthHandler.DiscordsClaim));
-                    opts.AddPolicy(Policies.TopggAuth, policy => policy.RequireClaim(AuthHandler.TopggClaim));
+                    opts.AddPolicy(Policies.DiscordsAuth, static policy => policy.RequireClaim(AuthHandler.DiscordsClaim));
+                    opts.AddPolicy(Policies.TopggAuth, static policy => policy.RequireClaim(AuthHandler.TopggClaim));
                 });
         }
 
@@ -53,7 +52,7 @@ namespace NadekoBot.VotesApi
             {
                 app.UseDeveloperExceptionPage();
                 app.UseSwagger();
-                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "NadekoBot.VotesApi v1"));
+                app.UseSwaggerUI(static c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "NadekoBot.VotesApi v1"));
             }
 
             app.UseHttpsRedirection();
@@ -63,7 +62,7 @@ namespace NadekoBot.VotesApi
             app.UseAuthentication();
             app.UseAuthorization();
 
-            app.UseEndpoints(endpoints => { endpoints.MapControllers(); });
+            app.UseEndpoints(static endpoints => { endpoints.MapControllers(); });
         }
     }
 }

src/NadekoBot.VotesApi/WeatherForecast.cs

@@ -1,5 +1,3 @@
-using System;
-
 namespace NadekoBot.VotesApi
 {
     public class Vote

src/NadekoBot/Bot.cs

@@ -196,7 +196,7 @@ public sealed class Bot
 
         Task SetClientReady()
         {
-            var _ = Task.Run(async () =>
+            _= Task.Run(async () =>
             {
                 clientReady.TrySetResult(true);
                 try
@@ -248,7 +248,7 @@ public sealed class Bot
     private Task Client_JoinedGuild(SocketGuild arg)
     {
         Log.Information("Joined server: {GuildName} [{GuildId}]", arg.Name, arg.Id);
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             GuildConfig gc;
             await using (var uow = _db.GetDbContext())

src/NadekoBot/Common/Collections/ConcurrentHashSet.cs

@@ -1,4 +1,5 @@
 #nullable disable
+#pragma warning disable all
 // License MIT
 // Source: https://github.com/i3arnon/ConcurrentHashSet
 
@@ -17,8 +18,8 @@ namespace System.Collections.Generic;
 [DebuggerDisplay("Count = {Count}")]
 public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T>
 {
-    private const int DefaultCapacity = 31;
-    private const int MaxLockNumber = 1024;
+    private const int DEFAULT_CAPACITY = 31;
+    private const int MAX_LOCK_NUMBER = 1024;
 
     private static int DefaultConcurrencyLevel
         => PlatformHelper.ProcessorCount;
@@ -39,8 +40,8 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
             {
                 AcquireAllLocks(ref acquiredLocks);
 
-                for (var i = 0; i < _tables.CountPerLock.Length; i++)
-                    if (_tables.CountPerLock[i] != 0)
+                for (var i = 0; i < tables.CountPerLock.Length; i++)
+                    if (tables.CountPerLock[i] != 0)
                         return false;
             }
             finally
@@ -83,7 +84,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
             {
                 AcquireAllLocks(ref acquiredLocks);
 
-                for (var i = 0; i < _tables.CountPerLock.Length; i++) count += _tables.CountPerLock[i];
+                for (var i = 0; i < tables.CountPerLock.Length; i++) count += tables.CountPerLock[i];
             }
             finally
             {
@@ -97,8 +98,8 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
     private readonly IEqualityComparer<T> _comparer;
     private readonly bool _growLockArray;
 
-    private int _budget;
-    private volatile Tables _tables;
+    private int budget;
+    private volatile Tables tables;
 
     /// <summary>
     ///     Initializes a new instance of the
@@ -108,7 +109,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
     ///     uses the default comparer for the item type.
     /// </summary>
     public ConcurrentHashSet()
-        : this(DefaultConcurrencyLevel, DefaultCapacity, true, EqualityComparer<T>.Default)
+        : this(DefaultConcurrencyLevel, DEFAULT_CAPACITY, true, EqualityComparer<T>.Default)
     {
     }
 
@@ -175,7 +176,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
     /// </param>
     /// <exception cref="T:System.ArgumentNullException"><paramref name="comparer" /> is a null reference.</exception>
     public ConcurrentHashSet(IEqualityComparer<T> comparer)
-        : this(DefaultConcurrencyLevel, DefaultCapacity, true, comparer)
+        : this(DefaultConcurrencyLevel, DEFAULT_CAPACITY, true, comparer)
     {
     }
 
@@ -241,7 +242,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
     ///     <paramref name="concurrencyLevel" /> is less than 1.
     /// </exception>
     public ConcurrentHashSet(int concurrencyLevel, IEnumerable<T> collection, IEqualityComparer<T> comparer)
-        : this(concurrencyLevel, DefaultCapacity, false, comparer)
+        : this(concurrencyLevel, DEFAULT_CAPACITY, false, comparer)
     {
         if (collection is null) throw new ArgumentNullException(nameof(collection));
         if (comparer is null) throw new ArgumentNullException(nameof(comparer));
@@ -296,10 +297,10 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
 
         var countPerLock = new int[locks.Length];
         var buckets = new Node[capacity];
-        _tables = new(buckets, locks, countPerLock);
+        tables = new(buckets, locks, countPerLock);
 
         _growLockArray = growLockArray;
-        _budget = buckets.Length / locks.Length;
+        budget = buckets.Length / locks.Length;
         _comparer = comparer ?? throw new ArgumentNullException(nameof(comparer));
     }
 
@@ -313,9 +314,9 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
         {
             AcquireAllLocks(ref locksAcquired);
 
-            var newTables = new Tables(new Node[DefaultCapacity], _tables.Locks, new int[_tables.CountPerLock.Length]);
-            _tables = newTables;
-            _budget = Math.Max(1, newTables.Buckets.Length / newTables.Locks.Length);
+            var newTables = new Tables(new Node[DEFAULT_CAPACITY], tables.Locks, new int[tables.CountPerLock.Length]);
+            tables = newTables;
+            budget = Math.Max(1, newTables.Buckets.Length / newTables.Locks.Length);
         }
         finally
         {
@@ -334,7 +335,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
         var hashcode = _comparer.GetHashCode(item);
 
         // We must capture the _buckets field in a local variable. It is set to a new table on each table resize.
-        var tables = _tables;
+        var tables = this.tables;
 
         var bucketNo = GetBucket(hashcode, tables.Buckets.Length);
 
@@ -368,7 +369,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
 
             var count = 0;
 
-            for (var i = 0; i < _tables.Locks.Length && count >= 0; i++) count += _tables.CountPerLock[i];
+            for (var i = 0; i < tables.Locks.Length && count >= 0; i++) count += tables.CountPerLock[i];
 
             if (array.Length - count < arrayIndex || count < 0) //"count" itself or "count + arrayIndex" can overflow
                 throw new ArgumentException(
@@ -403,7 +404,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
     /// </remarks>
     public IEnumerator<T> GetEnumerator()
     {
-        var buckets = _tables.Buckets;
+        var buckets = tables.Buckets;
 
         for (var i = 0; i < buckets.Length; i++)
         {
@@ -443,7 +444,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
         var hashcode = _comparer.GetHashCode(item);
         while (true)
         {
-            var tables = _tables;
+            var tables = this.tables;
 
             GetBucketAndLockNo(hashcode, out var bucketNo, out var lockNo, tables.Buckets.Length, tables.Locks.Length);
 
@@ -451,7 +452,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
             {
                 // If the table just got resized, we may not be holding the right lock, and must retry.
                 // This should be a rare occurrence.
-                if (tables != _tables) continue;
+                if (tables != this.tables) continue;
 
                 Node previous = null;
                 for (var current = tables.Buckets[bucketNo]; current is not null; current = current.Next)
@@ -481,14 +482,14 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
     {
         foreach (var item in collection) AddInternal(item, _comparer.GetHashCode(item), false);
 
-        if (_budget == 0) _budget = _tables.Buckets.Length / _tables.Locks.Length;
+        if (budget == 0) budget = tables.Buckets.Length / tables.Locks.Length;
     }
 
     private bool AddInternal(T item, int hashcode, bool acquireLock)
     {
         while (true)
         {
-            var tables = _tables;
+            var tables = this.tables;
             GetBucketAndLockNo(hashcode, out var bucketNo, out var lockNo, tables.Buckets.Length, tables.Locks.Length);
 
             var resizeDesired = false;
@@ -500,7 +501,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
 
                 // If the table just got resized, we may not be holding the right lock, and must retry.
                 // This should be a rare occurrence.
-                if (tables != _tables) continue;
+                if (tables != this.tables) continue;
 
                 // Try to find this item in the bucket
                 Node previous = null;
@@ -525,7 +526,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
                 // It is also possible that GrowTable will increase the budget but won't resize the bucket table.
                 // That happens if the bucket table is found to be poorly utilized due to a bad hash function.
                 //
-                if (tables.CountPerLock[lockNo] > _budget) resizeDesired = true;
+                if (tables.CountPerLock[lockNo] > budget) resizeDesired = true;
             }
             finally
             {
@@ -578,7 +579,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
             AcquireLocks(0, 1, ref locksAcquired);
 
             // Make sure nobody resized the table while we were waiting for lock 0:
-            if (tables != _tables)
+            if (tables != this.tables)
                 // We assume that since the table reference is different, it was already resized (or the budget
                 // was adjusted). If we ever decide to do table shrinking, or replace the table for other reasons,
                 // we will have to revisit this logic.
@@ -593,8 +594,8 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
             //
             if (approxCount < tables.Buckets.Length / 4)
             {
-                _budget = 2 * _budget;
-                if (_budget < 0) _budget = int.MaxValue;
+                budget = 2 * budget;
+                if (budget < 0) budget = int.MaxValue;
 
                 return;
             }
@@ -633,7 +634,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
                 //
                 // (There is one special case that would allow GrowTable() to be called in the future: 
                 // calling Clear() on the ConcurrentHashSet will shrink the table and lower the budget.)
-                _budget = int.MaxValue;
+                budget = int.MaxValue;
             }
 
             // Now acquire all other locks for the table
@@ -642,7 +643,7 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
             var newLocks = tables.Locks;
 
             // Add more locks
-            if (_growLockArray && tables.Locks.Length < MaxLockNumber)
+            if (_growLockArray && tables.Locks.Length < MAX_LOCK_NUMBER)
             {
                 newLocks = new object[tables.Locks.Length * 2];
                 Array.Copy(tables.Locks, 0, newLocks, 0, tables.Locks.Length);
@@ -677,10 +678,10 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
             }
 
             // Adjust the budget
-            _budget = Math.Max(1, newBuckets.Length / newLocks.Length);
+            budget = Math.Max(1, newBuckets.Length / newLocks.Length);
 
             // Replace tables with the new versions
-            _tables = new(newBuckets, newLocks, newCountPerLock);
+            this.tables = new(newBuckets, newLocks, newCountPerLock);
         }
         finally
         {
@@ -707,14 +708,14 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
 
         // Now that we have lock 0, the _locks array will not change (i.e., grow),
         // and so we can safely read _locks.Length.
-        AcquireLocks(1, _tables.Locks.Length, ref locksAcquired);
-        Debug.Assert(locksAcquired == _tables.Locks.Length);
+        AcquireLocks(1, tables.Locks.Length, ref locksAcquired);
+        Debug.Assert(locksAcquired == tables.Locks.Length);
     }
 
     private void AcquireLocks(int fromInclusive, int toExclusive, ref int locksAcquired)
     {
         Debug.Assert(fromInclusive <= toExclusive);
-        var locks = _tables.Locks;
+        var locks = tables.Locks;
 
         for (var i = fromInclusive; i < toExclusive; i++)
         {
@@ -734,12 +735,12 @@ public sealed class ConcurrentHashSet<T> : IReadOnlyCollection<T>, ICollection<T
     {
         Debug.Assert(fromInclusive <= toExclusive);
 
-        for (var i = fromInclusive; i < toExclusive; i++) Monitor.Exit(_tables.Locks[i]);
+        for (var i = fromInclusive; i < toExclusive; i++) Monitor.Exit(tables.Locks[i]);
     }
 
     private void CopyToItems(T[] array, int index)
     {
-        var buckets = _tables.Buckets;
+        var buckets = tables.Buckets;
         for (var i = 0; i < buckets.Length; i++)
         for (var current = buckets[i]; current is not null; current = current.Next)
         {

src/NadekoBot/Common/Collections/IndexedCollection.cs

@@ -53,6 +53,8 @@ public class IndexedCollection<T> : IList<T>
 
     public void Add(T item)
     {
+        ArgumentNullException.ThrowIfNull(item);
+        
         lock (_locker)
         {
             item.Index = Source.Count;

src/NadekoBot/Common/ILogCommandService.cs

@@ -26,6 +26,6 @@ public enum LogType
     ChannelUpdated,
     UserPresence,
     VoicePresence,
-    VoicePresenceTTS,
+    VoicePresenceTts,
     UserMuted
 }

src/NadekoBot/Common/NadekoModule.cs

@@ -86,7 +86,7 @@ public abstract class NadekoModule : ModuleBase
         }
         finally
         {
-            var _ = Task.Run(() => msg.DeleteAsync());
+            _= Task.Run(() => msg.DeleteAsync());
         }
     }
 
@@ -111,7 +111,7 @@ public abstract class NadekoModule : ModuleBase
 
         Task MessageReceived(SocketMessage arg)
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 if (arg is not SocketUserMessage userMsg
                     || userMsg.Channel is not ITextChannel

src/NadekoBot/Common/TypeReaders/Models/StoopidTime.cs

@@ -20,7 +20,6 @@ public class StoopidTime
 
         if (m.Length == 0) throw new ArgumentException("Invalid string input format.");
 
-        var output = string.Empty;
         var namesAndValues = new Dictionary<string, int>();
 
         foreach (var groupName in _regex.GetGroupNames())
@@ -35,7 +34,6 @@ public class StoopidTime
             if (value < 1) throw new ArgumentException($"Invalid {groupName} value.");
 
             namesAndValues[groupName] = value;
-            output += m.Groups[groupName].Value + " " + groupName + " ";
         }
 
         var ts = new TimeSpan((30 * namesAndValues["months"]) + (7 * namesAndValues["weeks"]) + namesAndValues["days"],

src/NadekoBot/Common/Yml/CommentGatheringTypeInspector.cs

@@ -7,59 +7,59 @@ namespace NadekoBot.Common.Yml;
 
 public class CommentGatheringTypeInspector : TypeInspectorSkeleton
 {
-    private readonly ITypeInspector innerTypeDescriptor;
+    private readonly ITypeInspector _innerTypeDescriptor;
 
     public CommentGatheringTypeInspector(ITypeInspector innerTypeDescriptor)
-        => this.innerTypeDescriptor = innerTypeDescriptor ?? throw new ArgumentNullException("innerTypeDescriptor");
+        => this._innerTypeDescriptor = innerTypeDescriptor ?? throw new ArgumentNullException("innerTypeDescriptor");
 
     public override IEnumerable<IPropertyDescriptor> GetProperties(Type type, object container)
-        => innerTypeDescriptor.GetProperties(type, container).Select(d => new CommentsPropertyDescriptor(d));
+        => _innerTypeDescriptor.GetProperties(type, container).Select(d => new CommentsPropertyDescriptor(d));
 
     private sealed class CommentsPropertyDescriptor : IPropertyDescriptor
     {
         public string Name { get; }
 
         public Type Type
-            => baseDescriptor.Type;
+            => _baseDescriptor.Type;
 
         public Type TypeOverride
         {
-            get => baseDescriptor.TypeOverride;
-            set => baseDescriptor.TypeOverride = value;
+            get => _baseDescriptor.TypeOverride;
+            set => _baseDescriptor.TypeOverride = value;
         }
 
         public int Order { get; set; }
 
         public ScalarStyle ScalarStyle
         {
-            get => baseDescriptor.ScalarStyle;
-            set => baseDescriptor.ScalarStyle = value;
+            get => _baseDescriptor.ScalarStyle;
+            set => _baseDescriptor.ScalarStyle = value;
         }
 
         public bool CanWrite
-            => baseDescriptor.CanWrite;
+            => _baseDescriptor.CanWrite;
 
-        private readonly IPropertyDescriptor baseDescriptor;
+        private readonly IPropertyDescriptor _baseDescriptor;
 
         public CommentsPropertyDescriptor(IPropertyDescriptor baseDescriptor)
         {
-            this.baseDescriptor = baseDescriptor;
+            this._baseDescriptor = baseDescriptor;
             Name = baseDescriptor.Name;
         }
 
         public void Write(object target, object value)
-            => baseDescriptor.Write(target, value);
+            => _baseDescriptor.Write(target, value);
 
         public T GetCustomAttribute<T>()
             where T : Attribute
-            => baseDescriptor.GetCustomAttribute<T>();
+            => _baseDescriptor.GetCustomAttribute<T>();
 
         public IObjectDescriptor Read(object target)
         {
-            var comment = baseDescriptor.GetCustomAttribute<CommentAttribute>();
+            var comment = _baseDescriptor.GetCustomAttribute<CommentAttribute>();
             return comment is not null
-                ? new CommentsObjectDescriptor(baseDescriptor.Read(target), comment.Comment)
-                : baseDescriptor.Read(target);
+                ? new CommentsObjectDescriptor(_baseDescriptor.Read(target), comment.Comment)
+                : _baseDescriptor.Read(target);
         }
     }
 }

src/NadekoBot/Common/Yml/CommentsObjectDescriptor.cs

@@ -9,22 +9,22 @@ public sealed class CommentsObjectDescriptor : IObjectDescriptor
     public string Comment { get; }
 
     public object Value
-        => innerDescriptor.Value;
+        => _innerDescriptor.Value;
 
     public Type Type
-        => innerDescriptor.Type;
+        => _innerDescriptor.Type;
 
     public Type StaticType
-        => innerDescriptor.StaticType;
+        => _innerDescriptor.StaticType;
 
     public ScalarStyle ScalarStyle
-        => innerDescriptor.ScalarStyle;
+        => _innerDescriptor.ScalarStyle;
 
-    private readonly IObjectDescriptor innerDescriptor;
+    private readonly IObjectDescriptor _innerDescriptor;
 
     public CommentsObjectDescriptor(IObjectDescriptor innerDescriptor, string comment)
     {
-        this.innerDescriptor = innerDescriptor;
+        this._innerDescriptor = innerDescriptor;
         Comment = comment;
     }
 }

src/NadekoBot/Db/Extensions/SelfAssignableRolesExtensions.cs

@@ -17,6 +17,6 @@ public static class SelfAssignableRolesExtensions
         return true;
     }
 
-    public static IEnumerable<SelfAssignedRole> GetFromGuild(this DbSet<SelfAssignedRole> roles, ulong guildId)
+    public static IReadOnlyCollection<SelfAssignedRole> GetFromGuild(this DbSet<SelfAssignedRole> roles, ulong guildId)
         => roles.AsQueryable().Where(s => s.GuildId == guildId).ToArray();
 }

src/NadekoBot/Db/Models/GCChannelId.cs

@@ -7,7 +7,7 @@ public class GCChannelId : DbEntity
     public ulong ChannelId { get; set; }
 
     public override bool Equals(object obj)
-        => obj is GCChannelId gc ? gc.ChannelId == ChannelId : false;
+        => obj is GCChannelId gc && gc.ChannelId == ChannelId;
 
     public override int GetHashCode()
         => ChannelId.GetHashCode();

src/NadekoBot/Modules/Administration/Administration.cs

@@ -87,8 +87,8 @@ public partial class Administration : NadekoModule<AdministrationService>
             channels.Select(x =>
             {
                 var ch = guild.GetChannel(x.ChannelId)?.ToString() ?? x.ChannelId.ToString();
-                var prefix = x.State ? "✅ " : "❌ ";
-                return prefix + ch;
+                var prefixSign = x.State ? "✅ " : "❌ ";
+                return prefixSign + ch;
             }));
 
         if (string.IsNullOrWhiteSpace(str))
@@ -319,7 +319,7 @@ public partial class Administration : NadekoModule<AdministrationService>
         }
         else if (time.Time <= TimeSpan.FromDays(7))
         {
-            var _ = Task.Run(async () =>
+            _= Task.Run(async () =>
             {
                 await Task.Delay(time.Time);
                 await msg.DeleteAsync();

src/NadekoBot/Modules/Administration/AdministrationService.cs

@@ -41,7 +41,7 @@ public class AdministrationService : INService
 
     private Task DelMsgOnCmd_Handler(IUserMessage msg, CommandInfo cmd)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             if (msg.Channel is not SocketTextChannel channel)
                 return;

src/NadekoBot/Modules/Administration/DangerousCommands/DangerousCommands.cs

@@ -63,7 +63,7 @@ namespace NadekoBot.Modules.Administration
             [Cmd]
             [OwnerOnly]
             public partial Task DeleteWaifus()
-                => SqlExec(DangerousCommandsService.WaifusDeleteSql);
+                => SqlExec(DangerousCommandsService.WAIFUS_DELETE_SQL);
 
             [Cmd]
             [OwnerOnly]
@@ -73,22 +73,22 @@ namespace NadekoBot.Modules.Administration
             [Cmd]
             [OwnerOnly]
             public partial Task DeleteWaifu(ulong userId)
-                => InternalExecSql(DangerousCommandsService.WaifuDeleteSql, userId);
+                => InternalExecSql(DangerousCommandsService.WAIFU_DELETE_SQL, userId);
 
             [Cmd]
             [OwnerOnly]
             public partial Task DeleteCurrency()
-                => SqlExec(DangerousCommandsService.CurrencyDeleteSql);
+                => SqlExec(DangerousCommandsService.CURRENCY_DELETE_SQL);
 
             [Cmd]
             [OwnerOnly]
             public partial Task DeletePlaylists()
-                => SqlExec(DangerousCommandsService.MusicPlaylistDeleteSql);
+                => SqlExec(DangerousCommandsService.MUSIC_PLAYLIST_DELETE_SQL);
 
             [Cmd]
             [OwnerOnly]
             public partial Task DeleteXp()
-                => SqlExec(DangerousCommandsService.XpDeleteSql);
+                => SqlExec(DangerousCommandsService.XP_DELETE_SQL);
 
             [Cmd]
             [OwnerOnly]

src/NadekoBot/Modules/Administration/DangerousCommands/DangerousCommandsService.cs

@@ -8,22 +8,22 @@ namespace NadekoBot.Modules.Administration.Services;
 
 public class DangerousCommandsService : INService
 {
-    public const string WaifusDeleteSql = @"DELETE FROM WaifuUpdates;
+    public const string WAIFUS_DELETE_SQL = @"DELETE FROM WaifuUpdates;
 DELETE FROM WaifuItem;
 DELETE FROM WaifuInfo;";
 
-    public const string WaifuDeleteSql =
+    public const string WAIFU_DELETE_SQL =
         @"DELETE FROM WaifuUpdates WHERE UserId=(SELECT Id FROM DiscordUser WHERE UserId={0});
 DELETE FROM WaifuItem WHERE WaifuInfoId=(SELECT Id FROM WaifuInfo WHERE WaifuId=(SELECT Id FROM DiscordUser WHERE UserId={0}));
 UPDATE WaifuInfo SET ClaimerId=NULL WHERE ClaimerId=(SELECT Id FROM DiscordUser WHERE UserId={0});
 DELETE FROM WaifuInfo WHERE WaifuId=(SELECT Id FROM DiscordUser WHERE UserId={0});";
 
-    public const string CurrencyDeleteSql =
+    public const string CURRENCY_DELETE_SQL =
         "UPDATE DiscordUser SET CurrencyAmount=0; DELETE FROM CurrencyTransactions; DELETE FROM PlantedCurrency;";
 
-    public const string MusicPlaylistDeleteSql = "DELETE FROM MusicPlaylists;";
+    public const string MUSIC_PLAYLIST_DELETE_SQL = "DELETE FROM MusicPlaylists;";
 
-    public const string XpDeleteSql = @"DELETE FROM UserXpStats;
+    public const string XP_DELETE_SQL = @"DELETE FROM UserXpStats;
 UPDATE DiscordUser
 SET ClubId=NULL,
     IsClubAdmin=0,

src/NadekoBot/Modules/Administration/GameVoiceChannel/GameVoiceChannelService.cs

@@ -27,7 +27,7 @@ public class GameVoiceChannelService : INService
 
     private Task OnPresenceUpdate(SocketUser socketUser, SocketPresence before, SocketPresence after)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -83,7 +83,7 @@ public class GameVoiceChannelService : INService
 
     private Task OnUserVoiceStateUpdated(SocketUser usr, SocketVoiceState oldState, SocketVoiceState newState)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {

src/NadekoBot/Modules/Administration/GreetBye/GreetService.cs

@@ -107,7 +107,7 @@ public class GreetService : INService, IReadyExecutor
 
     private Task OnUserLeft(SocketGuild guild, SocketUser user)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -271,7 +271,7 @@ public class GreetService : INService, IReadyExecutor
 
     private Task OnUserJoined(IGuildUser user)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {

src/NadekoBot/Modules/Administration/ImageOnlyChannelService.cs

@@ -31,7 +31,7 @@ public sealed class ImageOnlyChannelService : IEarlyBehavior
         var uow = _db.GetDbContext();
         _enabledOn = uow.ImageOnlyChannels.ToList()
                         .GroupBy(x => x.GuildId)
-                        .ToDictionary(x => x.Key, x => new ConcurrentHashSet<ulong>(x.Select(x => x.ChannelId)))
+                        .ToDictionary(x => x.Key, x => new ConcurrentHashSet<ulong>(x.Select(y => y.ChannelId)))
                         .ToConcurrent();
 
         _ = Task.Run(DeleteQueueRunner);

src/NadekoBot/Modules/Administration/Mute/MuteService.cs

@@ -126,7 +126,7 @@ public class MuteService : INService
         if (string.IsNullOrWhiteSpace(reason))
             return;
 
-        var _ = Task.Run(() => user.SendMessageAsync(embed: _eb.Create()
+        _= Task.Run(() => user.SendMessageAsync(embed: _eb.Create()
                                                                .WithDescription(
                                                                    $"You've been muted in {user.Guild} server")
                                                                .AddField("Mute Type", type.ToString())
@@ -144,7 +144,7 @@ public class MuteService : INService
         if (string.IsNullOrWhiteSpace(reason))
             return;
 
-        var _ = Task.Run(() => user.SendMessageAsync(embed: _eb.Create()
+        _= Task.Run(() => user.SendMessageAsync(embed: _eb.Create()
                                                                .WithDescription(
                                                                    $"You've been unmuted in {user.Guild} server")
                                                                .AddField("Unmute Type", type.ToString())
@@ -161,7 +161,7 @@ public class MuteService : INService
 
             if (muted is null || !muted.Contains(usr.Id))
                 return Task.CompletedTask;
-            var _ = Task.Run(() => MuteUser(usr, _client.CurrentUser, reason: "Sticky mute"));
+            _= Task.Run(() => MuteUser(usr, _client.CurrentUser, reason: "Sticky mute"));
         }
         catch (Exception ex)
         {
@@ -417,6 +417,9 @@ public class MuteService : INService
                 {
                     try
                     {
+                        if (roleId is null)
+                            return;
+                        
                         RemoveTimerFromDb(guildId, userId, type);
                         StopTimer(guildId, userId, type);
                         var guild = _client.GetGuild(guildId);

src/NadekoBot/Modules/Administration/Prefix/PrefixCommands.cs

@@ -20,36 +20,36 @@ public partial class Administration
         [RequireContext(ContextType.Guild)]
         [UserPerm(GuildPerm.Administrator)]
         [Priority(0)]
-        public partial Task Prefix(Set _, [Leftover] string prefix)
-            => Prefix(prefix);
+        public partial Task Prefix(Set _, [Leftover] string newPrefix)
+            => Prefix(newPrefix);
 
         [Cmd]
         [RequireContext(ContextType.Guild)]
         [UserPerm(GuildPerm.Administrator)]
         [Priority(0)]
-        public async partial Task Prefix([Leftover] string prefix)
+        public async partial Task Prefix([Leftover] string toSet)
         {
             if (string.IsNullOrWhiteSpace(prefix))
                 return;
 
-            var oldPrefix = base.prefix;
-            var newPrefix = CmdHandler.SetPrefix(ctx.Guild, prefix);
+            var oldPrefix = prefix;
+            var newPrefix = CmdHandler.SetPrefix(ctx.Guild, toSet);
 
             await ReplyConfirmLocalizedAsync(strs.prefix_new(Format.Code(oldPrefix), Format.Code(newPrefix)));
         }
 
         [Cmd]
         [OwnerOnly]
-        public async partial Task DefPrefix([Leftover] string prefix = null)
+        public async partial Task DefPrefix([Leftover] string toSet = null)
         {
-            if (string.IsNullOrWhiteSpace(prefix))
+            if (string.IsNullOrWhiteSpace(toSet))
             {
                 await ReplyConfirmLocalizedAsync(strs.defprefix_current(CmdHandler.GetPrefix()));
                 return;
             }
 
             var oldPrefix = CmdHandler.GetPrefix();
-            var newPrefix = CmdHandler.SetDefaultPrefix(prefix);
+            var newPrefix = CmdHandler.SetDefaultPrefix(toSet);
 
             await ReplyConfirmLocalizedAsync(strs.defprefix_new(Format.Code(oldPrefix), Format.Code(newPrefix)));
         }

src/NadekoBot/Modules/Administration/Protection/ProtectionService.cs

@@ -94,7 +94,7 @@ public class ProtectionService : INService
 
     private Task _client_LeftGuild(SocketGuild guild)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             TryStopAntiRaid(guild.Id);
             TryStopAntiSpam(guild.Id);
@@ -202,7 +202,7 @@ public class ProtectionService : INService
 
         if (msg.Channel is not ITextChannel channel)
             return Task.CompletedTask;
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {

src/NadekoBot/Modules/Administration/Protection/ProtectionStats.cs

@@ -38,15 +38,15 @@ public class AntiAltStats
         => _setting.MinAge;
 
     public int Counter
-        => _counter;
+        => counter;
 
     private readonly AntiAltSetting _setting;
 
-    private int _counter;
+    private int counter;
 
     public AntiAltStats(AntiAltSetting setting)
         => _setting = setting;
 
     public void Increment()
-        => Interlocked.Increment(ref _counter);
+        => Interlocked.Increment(ref counter);
 }

src/NadekoBot/Modules/Administration/Prune/PruneCommands.cs

@@ -8,7 +8,7 @@ public partial class Administration
     [Group]
     public partial class PruneCommands : NadekoSubmodule<PruneService>
     {
-        private static readonly TimeSpan twoWeeks = TimeSpan.FromDays(14);
+        private static readonly TimeSpan _twoWeeks = TimeSpan.FromDays(14);
 
         //delets her own messages, no perm required
         [Cmd]
@@ -73,11 +73,11 @@ public partial class Administration
             if (parameter is "-s" or "--safe")
                 await _service.PruneWhere((ITextChannel)ctx.Channel,
                     count,
-                    m => m.Author.Id == userId && DateTime.UtcNow - m.CreatedAt < twoWeeks && !m.IsPinned);
+                    m => m.Author.Id == userId && DateTime.UtcNow - m.CreatedAt < _twoWeeks && !m.IsPinned);
             else
                 await _service.PruneWhere((ITextChannel)ctx.Channel,
                     count,
-                    m => m.Author.Id == userId && DateTime.UtcNow - m.CreatedAt < twoWeeks);
+                    m => m.Author.Id == userId && DateTime.UtcNow - m.CreatedAt < _twoWeeks);
         }
     }
 }

src/NadekoBot/Modules/Administration/Role/RoleCommands.cs

@@ -13,7 +13,7 @@ public partial class Administration
     {
         public enum Exclude { Excl }
 
-        private IServiceProvider _services;
+        private readonly IServiceProvider _services;
 
         public RoleCommands(IServiceProvider services)
             => _services = services;
@@ -24,7 +24,7 @@ public partial class Administration
                 ? await ctx.Channel.GetMessageAsync(msgId)
                 : (await ctx.Channel.GetMessagesAsync(2).FlattenAsync()).Skip(1).FirstOrDefault();
 
-            if (input.Length % 2 != 0)
+            if (input.Length % 2 != 0 || target is null)
                 return;
 
             var all = await input.Chunk(input.Length / 2)
@@ -35,7 +35,7 @@ public partial class Administration
                                      var roleResult = await roleReader.ReadAsync(ctx, inputRoleStr, _services);
                                      if (!roleResult.IsSuccess)
                                      {
-                                         Log.Warning("Role {0} not found.", inputRoleStr);
+                                         Log.Warning("Role {Role} not found", inputRoleStr);
                                          return null;
                                      }
 
@@ -163,7 +163,6 @@ public partial class Administration
             if (index < 1 || !_service.Get(ctx.Guild.Id, out var rrs) || !rrs.Any() || rrs.Count < index)
                 return;
             index--;
-            var rr = rrs[index];
             _service.Remove(ctx.Guild.Id, index);
             await ReplyConfirmLocalizedAsync(strs.reaction_role_removed(index + 1));
         }

src/NadekoBot/Modules/Administration/Role/RoleCommandsService.cs

@@ -90,7 +90,7 @@ public class RoleCommandsService : INService
                 await dl.RemoveReactionAsync(reaction.Emote,
                     dl.Author,
                     new() { RetryMode = RetryMode.RetryRatelimit | RetryMode.Retry502 });
-                Log.Warning("User {0} is adding unrelated reactions to the reaction roles message.", dl.Author);
+                Log.Warning("User {Author} is adding unrelated reactions to the reaction roles message", dl.Author);
             }
         });
 

src/NadekoBot/Modules/Administration/SelfAssignableRoles/SelfAssignedRolesCommands.cs

@@ -58,8 +58,6 @@ public partial class Administration
         [Priority(0)]
         public async partial Task Sargn(int group, [Leftover] string name = null)
         {
-            var guser = (IGuildUser)ctx.User;
-
             var set = await _service.SetNameAsync(ctx.Guild.Id, group, name);
 
             if (set)
@@ -106,7 +104,7 @@ public partial class Administration
 
                     foreach (var kvp in roleGroups)
                     {
-                        var groupNameText = string.Empty;
+                        string groupNameText;
                         if (!groups.TryGetValue(kvp.Key, out var name))
                             groupNameText = Format.Bold(GetText(strs.self_assign_group(kvp.Key)));
                         else

src/NadekoBot/Modules/Administration/SelfAssignableRoles/SelfAssignedRolesService.cs

@@ -158,7 +158,7 @@ public class SelfAssignedRolesService : INService
         return success;
     }
 
-    public (bool AutoDelete, bool Exclusive, IEnumerable<SelfAssignedRole>) GetAdAndRoles(ulong guildId)
+    public (bool AutoDelete, bool Exclusive, IReadOnlyCollection<SelfAssignedRole>) GetAdAndRoles(ulong guildId)
     {
         using var uow = _db.GetDbContext();
         var gc = uow.GuildConfigsForId(guildId, set => set);
@@ -198,12 +198,12 @@ public class SelfAssignedRolesService : INService
         return areExclusive;
     }
 
-    public (bool Exclusive, IEnumerable<(SelfAssignedRole Model, IRole Role)> Roles, IDictionary<int, string> GroupNames
+    public (bool Exclusive, IReadOnlyCollection<(SelfAssignedRole Model, IRole Role)> Roles, IDictionary<int, string> GroupNames
         ) GetRoles(IGuild guild)
     {
         var exclusive = false;
 
-        IEnumerable<(SelfAssignedRole Model, IRole Role)> roles;
+        IReadOnlyCollection<(SelfAssignedRole Model, IRole Role)> roles;
         IDictionary<int, string> groupNames;
         using (var uow = _db.GetDbContext())
         {
@@ -211,11 +211,12 @@ public class SelfAssignedRolesService : INService
             exclusive = gc.ExclusiveSelfAssignedRoles;
             groupNames = gc.SelfAssignableRoleGroupNames.ToDictionary(x => x.Number, x => x.Name);
             var roleModels = uow.SelfAssignableRoles.GetFromGuild(guild.Id);
-            roles = roleModels.Select(x => (Model: x, Role: guild.GetRole(x.RoleId)));
+            roles = roleModels.Select(x => (Model: x, Role: guild.GetRole(x.RoleId)))
+                              .ToList();
             uow.SelfAssignableRoles.RemoveRange(roles.Where(x => x.Role is null).Select(x => x.Model).ToArray());
             uow.SaveChanges();
         }
 
-        return (exclusive, roles.Where(x => x.Role is not null), groupNames);
+        return (exclusive, roles.Where(x => x.Role is not null).ToList(), groupNames);
     }
 }

src/NadekoBot/Modules/Administration/ServerLog/ServerLogCommandService.cs

@@ -183,7 +183,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_UserUpdated(SocketUser before, SocketUser uAfter)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -292,7 +292,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
                 case LogType.VoicePresence:
                     channelId = logSetting.LogVoicePresenceId = logSetting.LogVoicePresenceId is null ? cid : default;
                     break;
-                case LogType.VoicePresenceTTS:
+                case LogType.VoicePresenceTts:
                     channelId = logSetting.LogVoicePresenceTTSId =
                         logSetting.LogVoicePresenceTTSId is null ? cid : default;
                     break;
@@ -306,7 +306,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_UserVoiceStateUpdated_TTS(SocketUser iusr, SocketVoiceState before, SocketVoiceState after)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -324,7 +324,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
                     return;
 
                 ITextChannel? logChannel;
-                if ((logChannel = await TryGetLogChannel(usr.Guild, logSetting, LogType.VoicePresenceTTS)) is null)
+                if ((logChannel = await TryGetLogChannel(usr.Guild, logSetting, LogType.VoicePresenceTts)) is null)
                     return;
 
                 var str = string.Empty;
@@ -351,8 +351,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
         IUser mod,
         MuteType muteType,
         string reason)
-    {
-        var _ = Task.Run(async () =>
+        => _= Task.Run(async () =>
         {
             try
             {
@@ -391,15 +390,13 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
                 // ignored
             }
         });
-    }
 
     private void MuteCommands_UserUnmuted(
         IGuildUser usr,
         IUser mod,
         MuteType muteType,
         string reason)
-    {
-        var _ = Task.Run(async () =>
+        => _= Task.Run(async () =>
         {
             try
             {
@@ -443,11 +440,10 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
                 // ignored
             }
         });
-    }
 
     public Task TriggeredAntiProtection(PunishmentAction action, ProtectionType protection, params IGuildUser[] users)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -517,7 +513,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_GuildUserUpdated(Cacheable<SocketGuildUser, ulong> optBefore, SocketGuildUser after)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -620,7 +616,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_ChannelUpdated(IChannel cbefore, IChannel cafter)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -668,7 +664,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_ChannelDestroyed(IChannel ich)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -706,7 +702,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_ChannelCreated(IChannel ich)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -742,7 +738,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_UserVoiceStateUpdated(SocketUser iusr, SocketVoiceState before, SocketVoiceState after)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -805,7 +801,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_UserLeft(SocketGuild guild, SocketUser usr)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -840,7 +836,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_UserJoined(IGuildUser usr)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -879,7 +875,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_UserUnbanned(IUser usr, IGuild guild)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -914,7 +910,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_UserBanned(IUser usr, IGuild guild)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -951,7 +947,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
 
     private Task _client_MessageDeleted(Cacheable<IMessage, ulong> optMsg, Cacheable<IMessageChannel, ulong> optCh)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -1005,7 +1001,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
         SocketMessage imsg2,
         ISocketMessageChannel ch)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -1104,7 +1100,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
             case LogType.VoicePresence:
                 id = logSetting.LogVoicePresenceId;
                 break;
-            case LogType.VoicePresenceTTS:
+            case LogType.VoicePresenceTts:
                 id = logSetting.LogVoicePresenceTTSId;
                 break;
             case LogType.UserMuted:
@@ -1177,7 +1173,7 @@ public sealed class LogCommandService : ILogCommandService, IReadyExecutor
             case LogType.VoicePresence:
                 newLogSetting.LogVoicePresenceId = null;
                 break;
-            case LogType.VoicePresenceTTS:
+            case LogType.VoicePresenceTts:
                 newLogSetting.LogVoicePresenceTTSId = null;
                 break;
         }

src/NadekoBot/Modules/Administration/ServerLog/ServerLogCommands.cs

@@ -131,7 +131,7 @@ public partial class Administration
                     return l.LogUserPresenceId;
                 case LogType.VoicePresence:
                     return l.LogVoicePresenceId;
-                case LogType.VoicePresenceTTS:
+                case LogType.VoicePresenceTts:
                     return l.LogVoicePresenceTTSId;
                 case LogType.UserMuted:
                     return l.UserMutedId;

src/NadekoBot/Modules/Administration/UserPunish/UserPunishService.cs

@@ -315,6 +315,9 @@ WHERE GuildId={guildId}
         if (number <= 0 || (time is not null && time.Time > TimeSpan.FromDays(49)))
             return false;
 
+        if (punish is PunishmentAction.AddRole && role is null)
+            return false;
+
         using var uow = _db.GetDbContext();
         var ps = uow.GuildConfigsForId(guildId, set => set.Include(x => x.WarnPunishments)).WarnPunishments;
         var toDelete = ps.Where(x => x.Count == number);
@@ -326,7 +329,7 @@ WHERE GuildId={guildId}
             Count = number,
             Punishment = punish,
             Time = (int?)time?.Time.TotalMinutes ?? 0,
-            RoleId = punish == PunishmentAction.AddRole ? role.Id : default(ulong?)
+            RoleId = punish == PunishmentAction.AddRole ? role!.Id : default(ulong?)
         });
         uow.SaveChanges();
         return true;

src/NadekoBot/Modules/Administration/VcRole/VcRoleService.cs

@@ -80,7 +80,7 @@ public class VcRoleService : INService
         using (var uow = _db.GetDbContext())
         {
             var configWithVcRole = uow.GuildConfigsForId(arg.GuildId, set => set.Include(x => x.VcRoleInfos));
-            var _ = InitializeVcRole(configWithVcRole);
+            _= InitializeVcRole(configWithVcRole);
         }
 
         return Task.CompletedTask;
@@ -166,7 +166,7 @@ public class VcRoleService : INService
 
         var oldVc = oldState.VoiceChannel;
         var newVc = newState.VoiceChannel;
-        var _ = Task.Run(() =>
+        _= Task.Run(() =>
         {
             try
             {

src/NadekoBot/Modules/CustomReactions/NadekoExpressionExtensions.cs

@@ -55,15 +55,15 @@ public static class NadekoExpressionExtensions
 
         if (wordIndex == 0)
         {
-            if (word.Length < str.Length && str.isValidWordDivider(word.Length))
+            if (word.Length < str.Length && str.IsValidWordDivider(word.Length))
                 return WordPosition.Start;
         }
         else if (wordIndex + word.Length == str.Length)
         {
-            if (str.isValidWordDivider(wordIndex - 1))
+            if (str.IsValidWordDivider(wordIndex - 1))
                 return WordPosition.End;
         }
-        else if (str.isValidWordDivider(wordIndex - 1) && str.isValidWordDivider(wordIndex + word.Length))
+        else if (str.IsValidWordDivider(wordIndex - 1) && str.IsValidWordDivider(wordIndex + word.Length))
         {
             return WordPosition.Middle;
         }
@@ -71,7 +71,7 @@ public static class NadekoExpressionExtensions
         return WordPosition.None;
     }
 
-    private static bool isValidWordDivider(this in ReadOnlySpan<char> str, int index)
+    private static bool IsValidWordDivider(this in ReadOnlySpan<char> str, int index)
     {
         var ch = str[index];
         if (ch is >= 'a' and <= 'z' or >= 'A' and <= 'Z' or >= '1' and <= '9')

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

@@ -44,8 +44,7 @@ public sealed class AnimalRace : IDisposable
     }
 
     public void Initialize() //lame name
-    {
-        var _t = Task.Run(async () =>
+        => _ = Task.Run(async () =>
         {
             await Task.Delay(_options.StartTime * 1000);
 
@@ -59,7 +58,6 @@ public sealed class AnimalRace : IDisposable
             }
             finally { _locker.Release(); }
         });
-    }
 
     public async Task<AnimalRacingUser> JoinRace(ulong userId, string userName, long bet = 0)
     {
@@ -104,13 +102,13 @@ public sealed class AnimalRace : IDisposable
                 if (user.Bet > 0)
                     await _currency.AddAsync(user.UserId, "Race refund", user.Bet);
 
-            var _sf = OnStartingFailed?.Invoke(this);
+            _ = OnStartingFailed?.Invoke(this);
             CurrentPhase = Phase.Ended;
             return;
         }
 
-        var _ = OnStarted?.Invoke(this);
-        var _t = Task.Run(async () =>
+        _ = OnStarted?.Invoke(this);
+        _ = Task.Run(async () =>
         {
             var rng = new NadekoRandom();
             while (!_users.All(x => x.Progress >= 60))
@@ -126,7 +124,7 @@ public sealed class AnimalRace : IDisposable
 
                 FinishedUsers.AddRange(finished);
 
-                var _ignore = OnStateUpdate?.Invoke(this);
+                _ = OnStateUpdate?.Invoke(this);
                 await Task.Delay(2500);
             }
 
@@ -135,7 +133,7 @@ public sealed class AnimalRace : IDisposable
                     "Won a Race",
                     FinishedUsers[0].Bet * (_users.Count - 1));
 
-            var _ended = OnEnded?.Invoke(this);
+            _ = OnEnded?.Invoke(this);
         });
     }
 

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

@@ -48,7 +48,7 @@ public partial class Gambling
 
             Task _client_MessageReceived(SocketMessage arg)
             {
-                var _ = Task.Run(() =>
+                _= Task.Run(() =>
                 {
                     try
                     {

src/NadekoBot/Modules/Gambling/BlackJack/BlackJackCommands.cs

@@ -18,7 +18,7 @@ public partial class Gambling
 
         private readonly ICurrencyService _cs;
         private readonly DbService _db;
-        private IUserMessage _msg;
+        private IUserMessage msg;
 
         public BlackJackCommands(ICurrencyService cs, DbService db, GamblingConfigService gamblingConf)
             : base(gamblingConf)
@@ -74,12 +74,13 @@ public partial class Gambling
         {
             try
             {
-                if (_msg is not null)
+                if (msg is not null)
                 {
-                    var _ = _msg.DeleteAsync();
+                    _= msg.DeleteAsync();
                 }
 
-                var c = bj.Dealer.Cards.Select(x => x.GetEmojiString());
+                var c = bj.Dealer.Cards.Select(x => x.GetEmojiString())
+                          .ToList();
                 var dealerIcon = "❔ ";
                 if (bj.State == Blackjack.GameState.Ended)
                 {
@@ -102,7 +103,7 @@ public partial class Gambling
 
                 foreach (var p in bj.Players)
                 {
-                    c = p.Cards.Select(x => x.GetEmojiString());
+                    c = p.Cards.Select(x => x.GetEmojiString()).ToList();
                     cStr = "-\t" + string.Concat(c.Select(x => x[..^1] + " "));
                     cStr += "\n-\t" + string.Concat(c.Select(x => x.Last() + " "));
                     var full = $"{p.DiscordUser.ToString().TrimTo(20)} | Bet: {p.Bet} | Value: {p.GetHandValue()}";
@@ -133,7 +134,7 @@ public partial class Gambling
                     embed.AddField(full, cStr);
                 }
 
-                _msg = await ctx.Channel.EmbedAsync(embed);
+                msg = await ctx.Channel.EmbedAsync(embed);
             }
             catch
             {
@@ -146,7 +147,7 @@ public partial class Gambling
                 ? Format.Strikethrough(x.DiscordUser.ToString().TrimTo(30))
                 : x.DiscordUser.ToString();
 
-            var hand = $"{string.Concat(x.Cards.Select(y => "〖" + y.GetEmojiString() + "〗"))}";
+            // var hand = $"{string.Concat(x.Cards.Select(y => "〖" + y.GetEmojiString() + "〗"))}";
 
 
             return $"{playerName} | Bet: {x.Bet}\n";

src/NadekoBot/Modules/Gambling/BlackJack/Blackjack.cs

@@ -35,9 +35,7 @@ public class Blackjack
     }
 
     public void Start()
-    {
-        var _ = GameLoop();
-    }
+        => _= GameLoop();
 
     public async Task GameLoop()
     {
@@ -89,13 +87,13 @@ public class Blackjack
             Log.Information("Dealer moves");
             await DealerMoves();
             await PrintState();
-            var _ = GameEnded?.Invoke(this);
+            _= GameEnded?.Invoke(this);
         }
         catch (Exception ex)
         {
             Log.Error(ex, "REPORT THE MESSAGE BELOW IN #NadekoLog SERVER PLEASE");
             State = GameState.Ended;
-            var _ = GameEnded?.Invoke(this);
+            _= GameEnded?.Invoke(this);
         }
     }
 
@@ -127,7 +125,7 @@ public class Blackjack
             if (!await _cs.RemoveAsync(user, "BlackJack-gamble", bet, gamble: true)) return false;
 
             Players.Add(new(user, bet));
-            var _ = PrintState();
+            _= PrintState();
             return true;
         }
         finally

src/NadekoBot/Modules/Gambling/Connect4/Connect4.cs

@@ -28,8 +28,8 @@ public sealed class Connect4Game : IDisposable
         OtherPlayerWon
     }
 
-    public const int NumberOfColumns = 7;
-    public const int NumberOfRows = 6;
+    public const int NUMBER_OF_COLUMNS = 7;
+    public const int NUMBER_OF_ROWS = 6;
 
     //public event Func<Connect4Game, Task> OnGameStarted;
     public event Func<Connect4Game, Task> OnGameStateUpdated;
@@ -51,7 +51,7 @@ public sealed class Connect4Game : IDisposable
         => CurrentPhase == Phase.P2Move ? _players[0].Value : _players[1].Value;
 
     //state is bottom to top, left to right
-    private readonly Field[] _gameState = new Field[NumberOfRows * NumberOfColumns];
+    private readonly Field[] _gameState = new Field[NUMBER_OF_ROWS * NUMBER_OF_COLUMNS];
     private readonly (ulong UserId, string Username)?[] _players = new (ulong, string)?[2];
 
     private readonly SemaphoreSlim _locker = new(1, 1);
@@ -81,14 +81,14 @@ public sealed class Connect4Game : IDisposable
         _cs = cs;
 
         _rng = new();
-        for (var i = 0; i < NumberOfColumns * NumberOfRows; i++) _gameState[i] = Field.Empty;
+        for (var i = 0; i < NUMBER_OF_COLUMNS * NUMBER_OF_ROWS; i++) _gameState[i] = Field.Empty;
     }
 
     public void Initialize()
     {
         if (CurrentPhase != Phase.Joining)
             return;
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             await Task.Delay(15000);
             await _locker.WaitAsync();
@@ -165,14 +165,14 @@ public sealed class Connect4Game : IDisposable
                   || (_players[1].Value.UserId == userId && CurrentPhase == Phase.P2Move)))
                 return false;
 
-            if (inputCol is < 0 or > NumberOfColumns) //invalid input
+            if (inputCol is < 0 or > NUMBER_OF_COLUMNS) //invalid input
                 return false;
 
             if (IsColumnFull(inputCol)) //can't play there event?
                 return false;
 
-            var start = NumberOfRows * inputCol;
-            for (var i = start; i < start + NumberOfRows; i++)
+            var start = NUMBER_OF_ROWS * inputCol;
+            for (var i = start; i < start + NUMBER_OF_ROWS; i++)
                 if (_gameState[i] == Field.Empty)
                 {
                     _gameState[i] = GetPlayerPiece(userId);
@@ -182,21 +182,21 @@ public sealed class Connect4Game : IDisposable
             //check winnning condition
             // ok, i'll go from [0-2] in rows (and through all columns) and check upward if 4 are connected
 
-            for (var i = 0; i < NumberOfRows - 3; i++)
+            for (var i = 0; i < NUMBER_OF_ROWS - 3; i++)
             {
                 if (CurrentPhase == Phase.Ended)
                     break;
 
-                for (var j = 0; j < NumberOfColumns; j++)
+                for (var j = 0; j < NUMBER_OF_COLUMNS; j++)
                 {
                     if (CurrentPhase == Phase.Ended)
                         break;
 
-                    var first = _gameState[i + (j * NumberOfRows)];
+                    var first = _gameState[i + (j * NUMBER_OF_ROWS)];
                     if (first != Field.Empty)
                         for (var k = 1; k < 4; k++)
                         {
-                            var next = _gameState[i + k + (j * NumberOfRows)];
+                            var next = _gameState[i + k + (j * NUMBER_OF_ROWS)];
                             if (next == first)
                             {
                                 if (k == 3)
@@ -213,21 +213,21 @@ public sealed class Connect4Game : IDisposable
             }
 
             // i'll go [0-1] in columns (and through all rows) and check to the right if 4 are connected
-            for (var i = 0; i < NumberOfColumns - 3; i++)
+            for (var i = 0; i < NUMBER_OF_COLUMNS - 3; i++)
             {
                 if (CurrentPhase == Phase.Ended)
                     break;
 
-                for (var j = 0; j < NumberOfRows; j++)
+                for (var j = 0; j < NUMBER_OF_ROWS; j++)
                 {
                     if (CurrentPhase == Phase.Ended)
                         break;
 
-                    var first = _gameState[j + (i * NumberOfRows)];
+                    var first = _gameState[j + (i * NUMBER_OF_ROWS)];
                     if (first != Field.Empty)
                         for (var k = 1; k < 4; k++)
                         {
-                            var next = _gameState[j + ((i + k) * NumberOfRows)];
+                            var next = _gameState[j + ((i + k) * NUMBER_OF_ROWS)];
                             if (next == first)
                                 if (k == 3)
                                     EndGame(Result.CurrentPlayerWon, CurrentPlayer.UserId);
@@ -239,17 +239,17 @@ public sealed class Connect4Game : IDisposable
             }
 
             //need to check diagonal now
-            for (var col = 0; col < NumberOfColumns; col++)
+            for (var col = 0; col < NUMBER_OF_COLUMNS; col++)
             {
                 if (CurrentPhase == Phase.Ended)
                     break;
 
-                for (var row = 0; row < NumberOfRows; row++)
+                for (var row = 0; row < NUMBER_OF_ROWS; row++)
                 {
                     if (CurrentPhase == Phase.Ended)
                         break;
 
-                    var first = _gameState[row + (col * NumberOfRows)];
+                    var first = _gameState[row + (col * NUMBER_OF_ROWS)];
 
                     if (first != Field.Empty)
                     {
@@ -263,12 +263,12 @@ public sealed class Connect4Game : IDisposable
                             var curCol = col - i;
 
                             //check if current values are in range
-                            if (curRow is >= NumberOfRows or < 0)
+                            if (curRow is >= NUMBER_OF_ROWS or < 0)
                                 break;
-                            if (curCol is < 0 or >= NumberOfColumns)
+                            if (curCol is < 0 or >= NUMBER_OF_COLUMNS)
                                 break;
 
-                            var cur = _gameState[curRow + (curCol * NumberOfRows)];
+                            var cur = _gameState[curRow + (curCol * NUMBER_OF_ROWS)];
                             if (cur == first)
                                 same++;
                             else break;
@@ -290,12 +290,12 @@ public sealed class Connect4Game : IDisposable
                             var curCol = col + i;
 
                             //check if current values are in range
-                            if (curRow is >= NumberOfRows or < 0)
+                            if (curRow is >= NUMBER_OF_ROWS or < 0)
                                 break;
-                            if (curCol is < 0 or >= NumberOfColumns)
+                            if (curCol is < 0 or >= NUMBER_OF_COLUMNS)
                                 break;
 
-                            var cur = _gameState[curRow + (curCol * NumberOfRows)];
+                            var cur = _gameState[curRow + (curCol * NUMBER_OF_ROWS)];
                             if (cur == first)
                                 same++;
                             else break;
@@ -323,7 +323,7 @@ public sealed class Connect4Game : IDisposable
                 ResetTimer();
             }
 
-            var _ = OnGameStateUpdated?.Invoke(this);
+            _= OnGameStateUpdated?.Invoke(this);
             return true;
         }
         finally { _locker.Release(); }
@@ -337,7 +337,7 @@ public sealed class Connect4Game : IDisposable
     {
         if (CurrentPhase == Phase.Ended)
             return;
-        var _ = OnGameEnded?.Invoke(this, result);
+        _= OnGameEnded?.Invoke(this, result);
         CurrentPhase = Phase.Ended;
 
         if (result == Result.Draw)
@@ -357,8 +357,8 @@ public sealed class Connect4Game : IDisposable
     //column is full if there are no empty fields
     private bool IsColumnFull(int column)
     {
-        var start = NumberOfRows * column;
-        for (var i = start; i < start + NumberOfRows; i++)
+        var start = NUMBER_OF_ROWS * column;
+        for (var i = start; i < start + NUMBER_OF_ROWS; i++)
             if (_gameState[i] == Field.Empty)
                 return false;
         return true;

src/NadekoBot/Modules/Gambling/Connect4/Connect4Commands.cs

@@ -88,7 +88,7 @@ public partial class Gambling
                 if (ctx.Channel.Id != arg.Channel.Id)
                     return Task.CompletedTask;
 
-                var _ = Task.Run(async () =>
+                _= Task.Run(async () =>
                 {
                     var success = false;
                     if (int.TryParse(arg.Content, out var col)) success = await game.Input(arg.Author.Id, col);
@@ -168,11 +168,11 @@ public partial class Gambling
             if (game.CurrentPhase is Connect4Game.Phase.P1Move or Connect4Game.Phase.P2Move)
                 sb.AppendLine(GetText(strs.connect4_player_to_move(Format.Bold(game.CurrentPlayer.Username))));
 
-            for (var i = Connect4Game.NumberOfRows; i > 0; i--)
+            for (var i = Connect4Game.NUMBER_OF_ROWS; i > 0; i--)
             {
-                for (var j = 0; j < Connect4Game.NumberOfColumns; j++)
+                for (var j = 0; j < Connect4Game.NUMBER_OF_COLUMNS; j++)
                 {
-                    var cur = game.GameState[i + (j * Connect4Game.NumberOfRows) - 1];
+                    var cur = game.GameState[i + (j * Connect4Game.NUMBER_OF_ROWS) - 1];
 
                     if (cur == Connect4Game.Field.Empty)
                         sb.Append("⚫"); //black circle
@@ -185,7 +185,7 @@ public partial class Gambling
                 sb.AppendLine();
             }
 
-            for (var i = 0; i < Connect4Game.NumberOfColumns; i++) sb.Append(numbers[i]);
+            for (var i = 0; i < Connect4Game.NUMBER_OF_COLUMNS; i++) sb.Append(numbers[i]);
             return sb.ToString();
         }
     }

src/NadekoBot/Modules/Gambling/Draw/DrawCommands.cs

@@ -68,10 +68,10 @@ public partial class Gambling
             if (num > 10)
                 num = 10;
 
-            var (ImageStream, ToSend) = await InternalDraw(num, ctx.Guild.Id);
-            await using (ImageStream)
+            var (imageStream, toSend) = await InternalDraw(num, ctx.Guild.Id);
+            await using (imageStream)
             {
-                await ctx.Channel.SendFileAsync(ImageStream, num + " cards.jpg", ToSend);
+                await ctx.Channel.SendFileAsync(imageStream, num + " cards.jpg", toSend);
             }
         }
 
@@ -83,10 +83,10 @@ public partial class Gambling
             if (num > 10)
                 num = 10;
 
-            var (ImageStream, ToSend) = await InternalDraw(num);
-            await using (ImageStream)
+            var (imageStream, toSend) = await InternalDraw(num);
+            await using (imageStream)
             {
-                await ctx.Channel.SendFileAsync(ImageStream, num + " cards.jpg", ToSend);
+                await ctx.Channel.SendFileAsync(imageStream, num + " cards.jpg", toSend);
             }
         }
 

src/NadekoBot/Modules/Gambling/Events/GameStatusEvent.cs

@@ -11,7 +11,7 @@ public class GameStatusEvent : ICurrencyEvent
     public bool PotEmptied { get; private set; }
     private readonly DiscordSocketClient _client;
     private readonly IGuild _guild;
-    private IUserMessage _msg;
+    private IUserMessage msg;
     private readonly ICurrencyService _cs;
     private readonly long _amount;
 
@@ -32,9 +32,9 @@ public class GameStatusEvent : ICurrencyEvent
                                                                .Select(x => (char)x)
                                                                .ToArray();
 
-    private readonly object stopLock = new();
+    private readonly object _stopLock = new();
 
-    private readonly object potLock = new();
+    private readonly object _potLock = new();
 
     public GameStatusEvent(
         DiscordSocketClient client,
@@ -62,9 +62,7 @@ public class GameStatusEvent : ICurrencyEvent
     }
 
     private void EventTimeout(object state)
-    {
-        var _ = StopEvent();
-    }
+        => _ = StopEvent();
 
     private async void OnTimerTick(object state)
     {
@@ -83,20 +81,20 @@ public class GameStatusEvent : ICurrencyEvent
                 true);
 
             if (_isPotLimited)
-                await _msg.ModifyAsync(m =>
+                await msg.ModifyAsync(m =>
                     {
                         m.Embed = GetEmbed(PotSize).Build();
                     },
                     new() { RetryMode = RetryMode.AlwaysRetry });
 
-            Log.Information("Awarded {0} users {1} currency.{2}",
+            Log.Information("Awarded {Count} users {Amount} currency.{Remaining}",
                 toAward.Count,
                 _amount,
                 _isPotLimited ? $" {PotSize} left." : "");
 
             if (potEmpty)
             {
-                var _ = StopEvent();
+                _= StopEvent();
             }
         }
         catch (Exception ex)
@@ -107,7 +105,7 @@ public class GameStatusEvent : ICurrencyEvent
 
     public async Task StartEvent()
     {
-        _msg = await _channel.EmbedAsync(GetEmbed(_opts.PotSize));
+        msg = await _channel.EmbedAsync(GetEmbed(_opts.PotSize));
         await _client.SetGameAsync(_code);
         _client.MessageDeleted += OnMessageDeleted;
         _client.MessageReceived += HandleMessage;
@@ -117,55 +115,55 @@ public class GameStatusEvent : ICurrencyEvent
     private IEmbedBuilder GetEmbed(long pot)
         => _embedFunc(CurrencyEvent.Type.GameStatus, _opts, pot);
 
-    private async Task OnMessageDeleted(Cacheable<IMessage, ulong> msg, Cacheable<IMessageChannel, ulong> cacheable)
+    private async Task OnMessageDeleted(Cacheable<IMessage, ulong> message, Cacheable<IMessageChannel, ulong> cacheable)
     {
-        if (msg.Id == _msg.Id) await StopEvent();
+        if (message.Id == this.msg.Id) await StopEvent();
     }
 
     public async Task StopEvent()
     {
         await Task.Yield();
-        lock (stopLock)
+        lock (_stopLock)
         {
             if (Stopped)
                 return;
             Stopped = true;
             _client.MessageDeleted -= OnMessageDeleted;
             _client.MessageReceived -= HandleMessage;
-            _client.SetGameAsync(null);
             _t.Change(Timeout.Infinite, Timeout.Infinite);
             _timeout?.Change(Timeout.Infinite, Timeout.Infinite);
+            _ = _client.SetGameAsync(null);
             try
             {
-                var _ = _msg.DeleteAsync();
+                _= msg.DeleteAsync();
             }
             catch { }
 
-            var os = OnEnded(_guild.Id);
+            _ = OnEnded?.Invoke(_guild.Id);
         }
     }
 
-    private Task HandleMessage(SocketMessage msg)
+    private Task HandleMessage(SocketMessage message)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
-            if (msg.Author is not IGuildUser gu // no unknown users, as they could be bots, or alts
+            if (message.Author is not IGuildUser gu // no unknown users, as they could be bots, or alts
                 || gu.IsBot // no bots
-                || msg.Content != _code // code has to be the same
+                || message.Content != _code // code has to be the same
                 || (DateTime.UtcNow - gu.CreatedAt).TotalDays <= 5) // no recently created accounts
                 return;
             // there has to be money left in the pot
             // and the user wasn't rewarded
-            if (_awardedUsers.Add(msg.Author.Id) && TryTakeFromPot())
+            if (_awardedUsers.Add(message.Author.Id) && TryTakeFromPot())
             {
-                _toAward.Enqueue(msg.Author.Id);
+                _toAward.Enqueue(message.Author.Id);
                 if (_isPotLimited && PotSize < _amount)
                     PotEmptied = true;
             }
 
             try
             {
-                await msg.DeleteAsync(new() { RetryMode = RetryMode.AlwaysFail });
+                await message.DeleteAsync(new() { RetryMode = RetryMode.AlwaysFail });
             }
             catch { }
         });
@@ -175,7 +173,7 @@ public class GameStatusEvent : ICurrencyEvent
     private bool TryTakeFromPot()
     {
         if (_isPotLimited)
-            lock (potLock)
+            lock (_potLock)
             {
                 if (PotSize < _amount)
                     return false;

src/NadekoBot/Modules/Gambling/Events/ReactionEvent.cs

@@ -11,8 +11,8 @@ public class ReactionEvent : ICurrencyEvent
     public bool PotEmptied { get; private set; }
     private readonly DiscordSocketClient _client;
     private readonly IGuild _guild;
-    private IUserMessage _msg;
-    private IEmote _emote;
+    private IUserMessage msg;
+    private IEmote emote;
     private readonly ICurrencyService _cs;
     private readonly long _amount;
 
@@ -27,9 +27,9 @@ public class ReactionEvent : ICurrencyEvent
     private readonly EventOptions _opts;
     private readonly GamblingConfig _config;
 
-    private readonly object stopLock = new();
+    private readonly object _stopLock = new();
 
-    private readonly object potLock = new();
+    private readonly object _potLock = new();
 
     public ReactionEvent(
         DiscordSocketClient client,
@@ -58,9 +58,7 @@ public class ReactionEvent : ICurrencyEvent
     }
 
     private void EventTimeout(object state)
-    {
-        var _ = StopEvent();
-    }
+        => _= StopEvent();
 
     private async void OnTimerTick(object state)
     {
@@ -76,20 +74,20 @@ public class ReactionEvent : ICurrencyEvent
             await _cs.AddBulkAsync(toAward, toAward.Select(_ => "Reaction Event"), toAward.Select(_ => _amount), true);
 
             if (_isPotLimited)
-                await _msg.ModifyAsync(m =>
+                await msg.ModifyAsync(m =>
                     {
                         m.Embed = GetEmbed(PotSize).Build();
                     },
                     new() { RetryMode = RetryMode.AlwaysRetry });
 
-            Log.Information("Awarded {0} users {1} currency.{2}",
+            Log.Information("Awarded {Count} users {Amount} currency.{Remaining}",
                 toAward.Count,
                 _amount,
                 _isPotLimited ? $" {PotSize} left." : "");
 
             if (potEmpty)
             {
-                var _ = StopEvent();
+                _= StopEvent();
             }
         }
         catch (Exception ex)
@@ -100,12 +98,12 @@ public class ReactionEvent : ICurrencyEvent
 
     public async Task StartEvent()
     {
-        if (Emote.TryParse(_config.Currency.Sign, out var emote))
-            _emote = emote;
+        if (Emote.TryParse(_config.Currency.Sign, out var parsedEmote))
+            this.emote = parsedEmote;
         else
-            _emote = new Emoji(_config.Currency.Sign);
-        _msg = await _channel.EmbedAsync(GetEmbed(_opts.PotSize));
-        await _msg.AddReactionAsync(_emote);
+            this.emote = new Emoji(_config.Currency.Sign);
+        msg = await _channel.EmbedAsync(GetEmbed(_opts.PotSize));
+        await msg.AddReactionAsync(this.emote);
         _client.MessageDeleted += OnMessageDeleted;
         _client.ReactionAdded += HandleReaction;
         _t.Change(TimeSpan.FromSeconds(2), TimeSpan.FromSeconds(2));
@@ -114,15 +112,15 @@ public class ReactionEvent : ICurrencyEvent
     private IEmbedBuilder GetEmbed(long pot)
         => _embedFunc(CurrencyEvent.Type.Reaction, _opts, pot);
 
-    private async Task OnMessageDeleted(Cacheable<IMessage, ulong> msg, Cacheable<IMessageChannel, ulong> cacheable)
+    private async Task OnMessageDeleted(Cacheable<IMessage, ulong> message, Cacheable<IMessageChannel, ulong> cacheable)
     {
-        if (msg.Id == _msg.Id) await StopEvent();
+        if (message.Id == this.msg.Id) await StopEvent();
     }
 
     public async Task StopEvent()
     {
         await Task.Yield();
-        lock (stopLock)
+        lock (_stopLock)
         {
             if (Stopped)
                 return;
@@ -133,27 +131,27 @@ public class ReactionEvent : ICurrencyEvent
             _timeout?.Change(Timeout.Infinite, Timeout.Infinite);
             try
             {
-                var _ = _msg.DeleteAsync();
+                _= msg.DeleteAsync();
             }
             catch { }
 
-            var os = OnEnded(_guild.Id);
+            _ = OnEnded?.Invoke(_guild.Id);
         }
     }
 
     private Task HandleReaction(
-        Cacheable<IUserMessage, ulong> msg,
+        Cacheable<IUserMessage, ulong> message,
         Cacheable<IMessageChannel, ulong> cacheable,
         SocketReaction r)
     {
-        var _ = Task.Run(() =>
+        _= Task.Run(() =>
         {
-            if (_emote.Name != r.Emote.Name)
+            if (emote.Name != r.Emote.Name)
                 return;
             if ((r.User.IsSpecified
                     ? r.User.Value
                     : null) is not IGuildUser gu // no unknown users, as they could be bots, or alts
-                || msg.Id != _msg.Id // same message
+                || message.Id != this.msg.Id // same message
                 || gu.IsBot // no bots
                 || (DateTime.UtcNow - gu.CreatedAt).TotalDays <= 5 // no recently created accounts
                 || (_noRecentlyJoinedServer
@@ -177,7 +175,7 @@ public class ReactionEvent : ICurrencyEvent
     private bool TryTakeFromPot()
     {
         if (_isPotLimited)
-            lock (potLock)
+            lock (_potLock)
             {
                 if (PotSize < _amount)
                     return false;

src/NadekoBot/Modules/Gambling/PlantPick/PlantPickService.cs

@@ -26,8 +26,8 @@ public class PlantPickService : INService
     private readonly DiscordSocketClient _client;
     private readonly GamblingConfigService _gss;
 
-    public readonly ConcurrentHashSet<ulong> _generationChannels = new();
-    private readonly SemaphoreSlim pickLock = new(1, 1);
+    private readonly ConcurrentHashSet<ulong> _generationChannels;
+    private readonly SemaphoreSlim _pickLock = new(1, 1);
 
     public PlantPickService(
         DbService db,
@@ -101,6 +101,7 @@ public class PlantPickService : INService
     ///     Get a random currency image stream, with an optional password sticked onto it.
     /// </summary>
     /// <param name="pass">Optional password to add to top left corner.</param>
+    /// <param name="extension">Extension of the file, defaults to png</param>
     /// <returns>Stream of the currency image</returns>
     public Stream GetRandomCurrencyImage(string pass, out string extension)
     {
@@ -140,7 +141,7 @@ public class PlantPickService : INService
         pass = pass.TrimTo(10, true).ToLowerInvariant();
         using var img = Image.Load<Rgba32>(curImg, out var format);
         // choose font size based on the image height, so that it's visible
-        var font = _fonts.NotoSans.CreateFont(img.Height / 12, FontStyle.Bold);
+        var font = _fonts.NotoSans.CreateFont(img.Height / 12.0f, FontStyle.Bold);
         img.Mutate(x =>
         {
             // measure the size of the text to be drawing
@@ -171,7 +172,7 @@ public class PlantPickService : INService
         if (!_generationChannels.Contains(channel.Id))
             return Task.CompletedTask;
 
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -245,7 +246,7 @@ public class PlantPickService : INService
         ulong uid,
         string pass)
     {
-        await pickLock.WaitAsync();
+        await _pickLock.WaitAsync();
         try
         {
             long amount;
@@ -276,7 +277,7 @@ public class PlantPickService : INService
             try
             {
                 // delete all of the plant messages which have just been picked
-                var _ = ch.DeleteMessagesAsync(ids);
+                _= ch.DeleteMessagesAsync(ids);
             }
             catch { }
 
@@ -285,7 +286,7 @@ public class PlantPickService : INService
         }
         finally
         {
-            pickLock.Release();
+            _pickLock.Release();
         }
     }
 

src/NadekoBot/Modules/Gambling/Raffle/CurrencyRaffleService.cs

@@ -13,14 +13,10 @@ public class CurrencyRaffleService : INService
 
     public Dictionary<ulong, CurrencyRaffleGame> Games { get; } = new();
     private readonly SemaphoreSlim _locker = new(1, 1);
-    private readonly DbService _db;
     private readonly ICurrencyService _cs;
 
-    public CurrencyRaffleService(DbService db, ICurrencyService cs)
-    {
-        _db = db;
-        _cs = cs;
-    }
+    public CurrencyRaffleService(ICurrencyService cs)
+        => _cs = cs;
 
     public async Task<(CurrencyRaffleGame, JoinErrorType?)> JoinOrCreateGame(
         ulong channelId,
@@ -57,7 +53,7 @@ public class CurrencyRaffleService : INService
 
             if (newGame)
             {
-                var _t = Task.Run(async () =>
+                _ = Task.Run(async () =>
                 {
                     await Task.Delay(60000);
                     await _locker.WaitAsync();
@@ -68,7 +64,7 @@ public class CurrencyRaffleService : INService
 
                         await _cs.AddAsync(winner.DiscordUser.Id, "Currency Raffle Win", won);
                         Games.Remove(channelId, out _);
-                        var oe = onEnded(winner.DiscordUser, won);
+                        _ = onEnded(winner.DiscordUser, won);
                     }
                     catch { }
                     finally { _locker.Release(); }

src/NadekoBot/Modules/Gambling/Slot/SlotCommands.cs

@@ -211,7 +211,7 @@ public partial class Gambling
             }
             finally
             {
-                var _ = Task.Run(async () =>
+                _= Task.Run(async () =>
                 {
                     await Task.Delay(1000);
                     _runningUsers.Remove(ctx.User.Id);

src/NadekoBot/Modules/Games/Acrophobia/Acrophobia.cs

@@ -127,7 +127,7 @@ public sealed class AcrophobiaGame : IDisposable
                         || !_usersWhoVoted.Add(userId))
                         break;
                     ++submissions[toVoteFor];
-                    var _ = Task.Run(() => OnUserVoted(userName));
+                    _= Task.Run(() => OnUserVoted(userName));
                     return true;
             }
 

src/NadekoBot/Modules/Games/Acrophobia/AcropobiaCommands.cs

@@ -48,7 +48,7 @@ public partial class Games
                 if (msg.Channel.Id != ctx.Channel.Id)
                     return Task.CompletedTask;
 
-                var _ = Task.Run(async () =>
+                _= Task.Run(async () =>
                 {
                     try
                     {

src/NadekoBot/Modules/Games/Nunchi/Nunchi.cs

@@ -85,7 +85,7 @@ public sealed class NunchiGame : IDisposable
                 _killTimeout);
 
             CurrentPhase = Phase.Playing;
-            var _ = OnGameStarted?.Invoke(this);
+            _= OnGameStarted?.Invoke(this);
             var __ = OnRoundStarted?.Invoke(this, CurrentNumber);
             return true;
         }
@@ -122,7 +122,7 @@ public sealed class NunchiGame : IDisposable
                     {
                         _killTimer.Change(Timeout.Infinite, Timeout.Infinite);
                         CurrentPhase = Phase.Ended;
-                        var _ = OnGameEnded?.Invoke(this, userTuple.Name);
+                        _= OnGameEnded?.Invoke(this, userTuple.Name);
                     }
                     else // else just start the new round without the user who was the last
                     {
@@ -159,7 +159,7 @@ public sealed class NunchiGame : IDisposable
         {
             _killTimer.Change(Timeout.Infinite, Timeout.Infinite);
             CurrentPhase = Phase.Ended;
-            var _ = OnGameEnded?.Invoke(this, _participants.Count > 0 ? _participants.First().Name : null);
+            _= OnGameEnded?.Invoke(this, _participants.Count > 0 ? _participants.First().Name : null);
             return;
         }
 

src/NadekoBot/Modules/Games/Nunchi/NunchiCommands.cs

@@ -55,7 +55,7 @@ public partial class Games
 
             Task _client_MessageReceived(SocketMessage arg)
             {
-                var _ = Task.Run(async () =>
+                _= Task.Run(async () =>
                 {
                     if (arg.Channel.Id != ctx.Channel.Id)
                         return;

src/NadekoBot/Modules/Games/Polls/PollRunner.cs

@@ -43,7 +43,7 @@ public class PollRunner
             if (!Poll.Votes.Add(voteObj))
                 return false;
 
-            var _ = OnVoted?.Invoke(msg, usr);
+            _= OnVoted?.Invoke(msg, usr);
         }
         finally { _locker.Release(); }
 

src/NadekoBot/Modules/Games/SpeedTyping/TypingGame.cs

@@ -117,7 +117,7 @@ public class TypingGame
 
     private Task AnswerReceived(SocketMessage imsg)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {

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

@@ -182,7 +182,7 @@ public class TicTacToe
 
     private Task Client_MessageReceived(SocketMessage msg)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             await _moveLock.WaitAsync();
             try

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

@@ -28,7 +28,7 @@ public partial class Games
             {
                 if (_service.TicTacToeGames.TryGetValue(channel.Id, out var game))
                 {
-                    var _ = Task.Run(async () =>
+                    _= Task.Run(async () =>
                     {
                         await game.Start((IGuildUser)ctx.User);
                     });

src/NadekoBot/Modules/Games/Trivia/TriviaGame.cs

@@ -24,10 +24,10 @@ public class TriviaGame
     private readonly ICurrencyService _cs;
     private readonly TriviaOptions _options;
 
-    private CancellationTokenSource _triviaCancelSource;
+    private CancellationTokenSource triviaCancelSource;
 
     private readonly TriviaQuestionPool _questionPool;
-    private int _timeoutCount;
+    private int timeoutCount;
     private readonly string _quitCommand;
     private readonly IEmbedBuilderService _eb;
 
@@ -66,7 +66,7 @@ public class TriviaGame
         while (!ShouldStopGame)
         {
             // reset the cancellation source    
-            _triviaCancelSource = new();
+            triviaCancelSource = new();
             showHowToQuit = !showHowToQuit;
 
             // load question
@@ -121,7 +121,7 @@ public class TriviaGame
                 try
                 {
                     //hint
-                    await Task.Delay(_options.QuestionTimer * 1000 / 2, _triviaCancelSource.Token);
+                    await Task.Delay(_options.QuestionTimer * 1000 / 2, triviaCancelSource.Token);
                     if (!_options.NoHint)
                         try
                         {
@@ -136,9 +136,9 @@ public class TriviaGame
                         catch (Exception ex) { Log.Warning(ex, "Error editing triva message"); }
 
                     //timeout
-                    await Task.Delay(_options.QuestionTimer * 1000 / 2, _triviaCancelSource.Token);
+                    await Task.Delay(_options.QuestionTimer * 1000 / 2, triviaCancelSource.Token);
                 }
-                catch (TaskCanceledException) { _timeoutCount = 0; } //means someone guessed the answer
+                catch (TaskCanceledException) { timeoutCount = 0; } //means someone guessed the answer
             }
             finally
             {
@@ -146,7 +146,7 @@ public class TriviaGame
                 _client.MessageReceived -= PotentialGuess;
             }
 
-            if (!_triviaCancelSource.IsCancellationRequested)
+            if (!triviaCancelSource.IsCancellationRequested)
                 try
                 {
                     var embed = _eb.Create()
@@ -158,7 +158,7 @@ public class TriviaGame
 
                     await Channel.EmbedAsync(embed);
 
-                    if (_options.Timeout != 0 && ++_timeoutCount >= _options.Timeout)
+                    if (_options.Timeout != 0 && ++timeoutCount >= _options.Timeout)
                         await StopGame();
                 }
                 catch (Exception ex)
@@ -198,7 +198,7 @@ public class TriviaGame
 
     private Task PotentialGuess(SocketMessage imsg)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -218,7 +218,7 @@ public class TriviaGame
                 {
                     if (GameActive
                         && CurrentQuestion.IsAnswerCorrect(umsg.Content)
-                        && !_triviaCancelSource.IsCancellationRequested)
+                        && !triviaCancelSource.IsCancellationRequested)
                     {
                         Users.AddOrUpdate(guildUser, 1, (_, old) => ++old);
                         guess = true;
@@ -227,7 +227,7 @@ public class TriviaGame
                 finally { _guessLock.Release(); }
 
                 if (!guess) return;
-                _triviaCancelSource.Cancel();
+                triviaCancelSource.Cancel();
 
 
                 if (_options.WinRequirement != 0 && Users[guildUser] == _options.WinRequirement)

src/NadekoBot/Modules/Games/Trivia/TriviaQuestion.cs

@@ -21,9 +21,9 @@ public class TriviaQuestion
     public string Answer { get; set; }
 
     public string CleanAnswer
-        => _cleanAnswer ?? (_cleanAnswer = Clean(Answer));
+        => cleanAnswer ?? (cleanAnswer = Clean(Answer));
 
-    private string _cleanAnswer;
+    private string cleanAnswer;
 
     public TriviaQuestion(
         string q,

src/NadekoBot/Modules/Music/Services/extractor/Misc.cs

@@ -52,7 +52,7 @@ public sealed partial class YtLoader
 
     public sealed class YtTrackInfo : TrackInfo
     {
-        private const string BaseYoutubeUrl = "https://youtube.com/watch?v=";
+        private const string BASE_YOUTUBE_URL = "https://youtube.com/watch?v=";
         public override string Url { get; }
         public override string Title { get; }
         public override TimeSpan Duration { get; }
@@ -62,7 +62,7 @@ public sealed partial class YtLoader
         public YtTrackInfo(string title, string videoId, TimeSpan duration)
         {
             Title = title;
-            Url = BaseYoutubeUrl + videoId;
+            Url = BASE_YOUTUBE_URL + videoId;
             Duration = duration;
 
             _videoId = videoId;

src/NadekoBot/Modules/Music/Services/extractor/YtLoader.cs

@@ -7,10 +7,10 @@ namespace NadekoBot.Modules.Music.Services;
 
 public sealed partial class YtLoader
 {
-    private static readonly byte[] YT_RESULT_INITIAL_DATA = Encoding.UTF8.GetBytes("var ytInitialData = ");
-    private static readonly byte[] YT_RESULT_JSON_END = Encoding.UTF8.GetBytes(";<");
+    private static readonly byte[] _ytResultInitialData = Encoding.UTF8.GetBytes("var ytInitialData = ");
+    private static readonly byte[] _ytResultJsonEnd = Encoding.UTF8.GetBytes(";<");
 
-    private static readonly string[] durationFormats =
+    private static readonly string[] _durationFormats =
     {
         @"m\:ss", @"mm\:ss", @"h\:mm\:ss", @"hh\:mm\:ss", @"hhh\:mm\:ss"
     };
@@ -98,7 +98,7 @@ public sealed partial class YtLoader
             var durationString = elem.GetProperty("lengthText").GetProperty("simpleText").GetString();
 
             if (!TimeSpan.TryParseExact(durationString,
-                    durationFormats,
+                    _durationFormats,
                     CultureInfo.InvariantCulture,
                     out var duration))
             {
@@ -117,13 +117,13 @@ public sealed partial class YtLoader
     private Memory<byte> GetScriptResponseSpan(byte[] response)
     {
         var responseSpan = response.AsSpan()[140_000..];
-        var startIndex = responseSpan.IndexOf(YT_RESULT_INITIAL_DATA);
+        var startIndex = responseSpan.IndexOf(_ytResultInitialData);
         if (startIndex == -1)
             return null; // todo future try selecting html
-        startIndex += YT_RESULT_INITIAL_DATA.Length;
+        startIndex += _ytResultInitialData.Length;
 
         var endIndex =
-            140_000 + startIndex + responseSpan[(startIndex + 20_000)..].IndexOf(YT_RESULT_JSON_END) + 20_000;
+            140_000 + startIndex + responseSpan[(startIndex + 20_000)..].IndexOf(_ytResultJsonEnd) + 20_000;
         startIndex += 140_000;
         return response.AsMemory(startIndex, endIndex - startIndex);
     }

src/NadekoBot/Modules/Music/_Common/Impl/MusicQueue.cs

@@ -42,9 +42,9 @@ public sealed partial class MusicQueue : IMusicQueue
         {
             // just make sure the internal logic runs first
             // to make sure that some potential indermediate value is not returned
-            lock (locker)
+            lock (_locker)
             {
-                return _index;
+                return index;
             }
         }
     }
@@ -53,128 +53,128 @@ public sealed partial class MusicQueue : IMusicQueue
     {
         get
         {
-            lock (locker)
+            lock (_locker)
             {
-                return _tracks.Count;
+                return tracks.Count;
             }
         }
     }
 
-    private LinkedList<QueuedTrackInfo> _tracks;
+    private LinkedList<QueuedTrackInfo> tracks;
 
-    private int _index;
+    private int index;
 
-    private readonly object locker = new();
+    private readonly object _locker = new();
 
     public MusicQueue()
     {
-        _index = 0;
-        _tracks = new();
+        index = 0;
+        tracks = new();
     }
 
-    public IQueuedTrackInfo Enqueue(ITrackInfo trackInfo, string queuer, out int index)
+    public IQueuedTrackInfo Enqueue(ITrackInfo trackInfo, string queuer, out int enqueuedAt)
     {
-        lock (locker)
+        lock (_locker)
         {
             var added = new QueuedTrackInfo(trackInfo, queuer);
-            index = _tracks.Count;
-            _tracks.AddLast(added);
+            enqueuedAt = tracks.Count;
+            tracks.AddLast(added);
             return added;
         }
     }
 
-    public IQueuedTrackInfo EnqueueNext(ITrackInfo trackInfo, string queuer, out int index)
+    public IQueuedTrackInfo EnqueueNext(ITrackInfo trackInfo, string queuer, out int trackIndex)
     {
-        lock (locker)
+        lock (_locker)
         {
-            if (_tracks.Count == 0) return Enqueue(trackInfo, queuer, out index);
+            if (tracks.Count == 0) return Enqueue(trackInfo, queuer, out trackIndex);
 
-            var currentNode = _tracks.First!;
+            var currentNode = tracks.First!;
             int i;
-            for (i = 1; i <= _index; i++)
+            for (i = 1; i <= this.index; i++)
                 currentNode = currentNode.Next!; // can't be null because index is always in range of the count
 
             var added = new QueuedTrackInfo(trackInfo, queuer);
-            index = i;
+            trackIndex = i;
 
-            _tracks.AddAfter(currentNode, added);
+            tracks.AddAfter(currentNode, added);
 
             return added;
         }
     }
 
-    public void EnqueueMany(IEnumerable<ITrackInfo> tracks, string queuer)
+    public void EnqueueMany(IEnumerable<ITrackInfo> toEnqueue, string queuer)
     {
-        lock (locker)
+        lock (_locker)
         {
-            foreach (var track in tracks)
+            foreach (var track in toEnqueue)
             {
                 var added = new QueuedTrackInfo(track, queuer);
-                _tracks.AddLast(added);
+                this.tracks.AddLast(added);
             }
         }
     }
 
     public IReadOnlyCollection<IQueuedTrackInfo> List()
     {
-        lock (locker)
+        lock (_locker)
         {
-            return _tracks.ToList();
+            return tracks.ToList();
         }
     }
 
-    public IQueuedTrackInfo? GetCurrent(out int index)
+    public IQueuedTrackInfo? GetCurrent(out int currentIndex)
     {
-        lock (locker)
+        lock (_locker)
         {
-            index = _index;
-            return _tracks.ElementAtOrDefault(_index);
+            currentIndex = index;
+            return tracks.ElementAtOrDefault(index);
         }
     }
 
     public void Advance()
     {
-        lock (locker)
+        lock (_locker)
         {
-            if (++_index >= _tracks.Count)
-                _index = 0;
+            if (++index >= tracks.Count)
+                index = 0;
         }
     }
 
     public void Clear()
     {
-        lock (locker)
+        lock (_locker)
         {
-            _tracks.Clear();
+            tracks.Clear();
         }
     }
 
-    public bool SetIndex(int index)
+    public bool SetIndex(int newIndex)
     {
-        lock (locker)
+        lock (_locker)
         {
-            if (index < 0 || index >= _tracks.Count)
+            if (newIndex < 0 || newIndex >= tracks.Count)
                 return false;
 
-            _index = index;
+            this.index = newIndex;
             return true;
         }
     }
 
-    private void RemoveAtInternal(int index, out IQueuedTrackInfo trackInfo)
+    private void RemoveAtInternal(int remoteAtIndex, out IQueuedTrackInfo trackInfo)
     {
-        var removedNode = _tracks.First!;
+        var removedNode = tracks.First!;
         int i;
-        for (i = 0; i < index; i++) removedNode = removedNode.Next!;
+        for (i = 0; i < remoteAtIndex; i++) removedNode = removedNode.Next!;
 
         trackInfo = removedNode.Value;
-        _tracks.Remove(removedNode);
+        tracks.Remove(removedNode);
 
-        if (i <= _index)
-            --_index;
+        if (i <= this.index)
+            --this.index;
 
-        if (_index < 0)
-            _index = Count;
+        if (this.index < 0)
+            this.index = Count;
 
         // if it was the last song in the queue
         // // wrap back to start
@@ -188,10 +188,10 @@ public sealed partial class MusicQueue : IMusicQueue
 
     public void RemoveCurrent()
     {
-        lock (locker)
+        lock (_locker)
         {
-            if (_index < _tracks.Count)
-                RemoveAtInternal(_index, out _);
+            if (index < tracks.Count)
+                RemoveAtInternal(index, out _);
         }
     }
 
@@ -204,29 +204,29 @@ public sealed partial class MusicQueue : IMusicQueue
         if (to == from)
             throw new ArgumentException($"{nameof(from)} and {nameof(to)} must be different");
 
-        lock (locker)
+        lock (_locker)
         {
             if (from >= Count || to >= Count)
                 return null;
 
             // update current track index
-            if (from == _index)
+            if (from == index)
             {
                 // if the song being moved is the current track
                 // it means that it will for sure end up on the destination
-                _index = to;
+                index = to;
             }
             else
             {
                 // moving a track from below the current track means 
                 // means it will drop down
-                if (from < _index)
-                    _index--;
+                if (from < index)
+                    index--;
 
                 // moving a track to below the current track
                 // means it will rise up
-                if (to <= _index)
-                    _index++;
+                if (to <= index)
+                    index++;
 
 
                 // if both from and to are below _index - net change is + 1 - 1 = 0
@@ -236,78 +236,76 @@ public sealed partial class MusicQueue : IMusicQueue
             }
 
             // get the node which needs to be moved
-            var fromNode = _tracks.First!;
+            var fromNode = tracks.First!;
             for (var i = 0; i < from; i++)
                 fromNode = fromNode.Next!;
 
             // remove it from the queue
-            _tracks.Remove(fromNode);
+            tracks.Remove(fromNode);
 
             // if it needs to be added as a first node,
             // add it directly and return
             if (to == 0)
             {
-                _tracks.AddFirst(fromNode);
+                tracks.AddFirst(fromNode);
                 return fromNode.Value;
             }
 
             // else find the node at the index before the specified target
-            var addAfterNode = _tracks.First!;
+            var addAfterNode = tracks.First!;
             for (var i = 1; i < to; i++)
                 addAfterNode = addAfterNode.Next!;
 
             // and add after it
-            _tracks.AddAfter(addAfterNode, fromNode);
+            tracks.AddAfter(addAfterNode, fromNode);
             return fromNode.Value;
         }
     }
 
     public void Shuffle(Random rng)
     {
-        lock (locker)
+        lock (_locker)
         {
-            var list = _tracks.ToList();
+            var list = tracks.ToList();
 
             for (var i = 0; i < list.Count; i++)
             {
                 var struck = rng.Next(i, list.Count);
-                var temp = list[struck];
-                list[struck] = list[i];
-                list[i] = temp;
+                (list[struck], list[i]) = (list[i], list[struck]);
 
                 // could preserving the index during shuffling be done better?
-                if (i == _index)
-                    _index = struck;
-                else if (struck == _index)
-                    _index = i;
+                if (i == index)
+                    index = struck;
+                else if (struck == index)
+                    index = i;
             }
 
-            _tracks = new(list);
+            tracks = new(list);
         }
     }
 
     public bool IsLast()
     {
-        lock (locker)
+        lock (_locker)
         {
-            return _index == _tracks.Count // if there are no tracks
-                   || _index == _tracks.Count - 1;
+            return index == tracks.Count // if there are no tracks
+                   || index == tracks.Count - 1;
         }
     }
 
-    public bool TryRemoveAt(int index, out IQueuedTrackInfo? trackInfo, out bool isCurrent)
+    public bool TryRemoveAt(int remoteAt, out IQueuedTrackInfo? trackInfo, out bool isCurrent)
     {
-        lock (locker)
+        lock (_locker)
         {
             isCurrent = false;
             trackInfo = null;
 
-            if (index < 0 || index >= _tracks.Count)
+            if (remoteAt < 0 || remoteAt >= tracks.Count)
                 return false;
 
-            if (index == _index) isCurrent = true;
+            if (remoteAt == this.index) isCurrent = true;
 
-            RemoveAtInternal(index, out trackInfo);
+            RemoveAtInternal(remoteAt, out trackInfo);
 
             return true;
         }

src/NadekoBot/Modules/Music/_Common/Impl/VoiceProxy.cs

@@ -17,7 +17,7 @@ public sealed class VoiceProxy : IVoiceProxy
     private const int DELAY_ON_ERROR_MILISECONDS = 200;
 
     public VoiceProxyState State
-        => _gateway switch
+        => gateway switch
         {
             { Started: true, Stopped: false } => VoiceProxyState.Started,
             { Stopped: false } => VoiceProxyState.Created,
@@ -25,16 +25,16 @@ public sealed class VoiceProxy : IVoiceProxy
         };
 
 
-    private VoiceGateway _gateway;
+    private VoiceGateway gateway;
 
     public VoiceProxy(VoiceGateway initial)
-        => _gateway = initial;
+        => gateway = initial;
 
     public bool SendPcmFrame(VoiceClient vc, Span<byte> data, int length)
     {
         try
         {
-            var gw = _gateway;
+            var gw = gateway;
             if (gw is null || gw.Stopped || !gw.Started) return false;
 
             vc.SendPcmFrame(gw, data, 0, length);
@@ -55,7 +55,7 @@ public sealed class VoiceProxy : IVoiceProxy
 
             try
             {
-                var gw = _gateway;
+                var gw = gateway;
                 if (gw is null || !gw.ConnectingFinished.Task.IsCompleted)
                 {
                     ++errorCount;
@@ -78,8 +78,8 @@ public sealed class VoiceProxy : IVoiceProxy
         return State != VoiceProxyState.Stopped && errorCount <= MAX_ERROR_COUNT;
     }
 
-    public void SetGateway(VoiceGateway gateway)
-        => _gateway = gateway;
+    public void SetGateway(VoiceGateway newGateway)
+        => gateway = newGateway;
 
     public Task StartSpeakingAsync()
         => RunGatewayAction(gw => gw.SendSpeakingAsync(VoiceSpeaking.State.Microphone));
@@ -88,11 +88,11 @@ public sealed class VoiceProxy : IVoiceProxy
         => RunGatewayAction(gw => gw.SendSpeakingAsync(VoiceSpeaking.State.None));
 
     public async Task StartGateway()
-        => await _gateway.Start();
+        => await gateway.Start();
 
     public Task StopGateway()
     {
-        if (_gateway is { } gw)
+        if (gateway is { } gw)
             return gw.StopAsync();
 
         return Task.CompletedTask;

src/NadekoBot/Modules/Music/_Common/Resolvers/LocalTrackResolver.cs

@@ -45,7 +45,8 @@ public sealed class LocalTrackResolver : ILocalTrackResolver
                            if (!x.Attributes.HasFlag(FileAttributes.Hidden | FileAttributes.System)
                                && _musicExtensions.Contains(x.Extension.ToUpperInvariant())) return true;
                            return false;
-                       });
+                       })
+                       .ToList();
 
         var firstFile = files.FirstOrDefault()?.FullName;
         if (firstFile is null)

src/NadekoBot/Modules/Nsfw/SearchImageCacher.cs

@@ -5,7 +5,7 @@ namespace NadekoBot.Modules.Nsfw.Common;
 
 public class SearchImageCacher : INService
 {
-    private static readonly ISet<string> defaultTagBlacklist = new HashSet<string>
+    private static readonly ISet<string> _defaultTagBlacklist = new HashSet<string>
     {
         "loli",
         "lolicon",
@@ -21,7 +21,7 @@ public class SearchImageCacher : INService
     private readonly Dictionary<Booru, HashSet<string>> _usedTags = new();
     private readonly IMemoryCache _cache;
 
-    private readonly ConcurrentDictionary<(Booru, string), int> maxPages = new();
+    private readonly ConcurrentDictionary<(Booru, string), int> _maxPages = new();
 
     public SearchImageCacher(IHttpClientFactory httpFactory, IMemoryCache cache)
     {
@@ -59,7 +59,7 @@ public class SearchImageCacher : INService
             // Log.Warning("Got no images for {0}, tags: {1}", type, string.Join(", ", tags));
             return false;
 
-        Log.Information("Updating {0}...", type);
+        Log.Information("Updating {Type}...", type);
         lock (_typeLocks[type])
         {
             var typeUsedTags = _usedTags[type];
@@ -75,7 +75,7 @@ public class SearchImageCacher : INService
             {
                 // if any of the tags is a tag banned by discord
                 // do not put that image in the cache
-                if (defaultTagBlacklist.Overlaps(img.Tags))
+                if (_defaultTagBlacklist.Overlaps(img.Tags))
                     continue;
 
                 // if image doesn't have a proper absolute uri, skip it
@@ -190,7 +190,7 @@ public class SearchImageCacher : INService
             tags = tags[..2];
 
         // use both tags banned by discord and tags banned on the server 
-        if (blacklistedTags.Overlaps(tags) || defaultTagBlacklist.Overlaps(tags))
+        if (blacklistedTags.Overlaps(tags) || _defaultTagBlacklist.Overlaps(tags))
             return default;
 
         // query for an image
@@ -223,16 +223,16 @@ public class SearchImageCacher : INService
         CancellationToken cancel)
     {
         var tagStr = string.Join(' ', tags.OrderByDescending(x => x));
-        var page = 0;
 
         var attempt = 0;
         while (attempt++ <= 10)
         {
-            if (maxPages.TryGetValue((type, tagStr), out var maxPage))
+            int page;
+            if (_maxPages.TryGetValue((type, tagStr), out var maxPage))
             {
                 if (maxPage == 0)
                 {
-                    Log.Information("Tag {0} yields no result on {1}, skipping.", tagStr, type);
+                    Log.Information("Tag {Tags} yields no result on {Type}, skipping", tagStr, type);
                     return new();
                 }
 
@@ -247,7 +247,7 @@ public class SearchImageCacher : INService
 
             if (result is null or { Count: 0 })
             {
-                Log.Information("Tag {0}, page {1} has no result on {2}.",
+                Log.Information("Tag {Tags}, page {Page} has no result on {Type}",
                     string.Join(", ", tags),
                     page,
                     type.ToString());
@@ -284,7 +284,7 @@ public class SearchImageCacher : INService
     {
         try
         {
-            Log.Information("Downloading from {0} (page {1})...", type, page);
+            Log.Information("Downloading from {Type} (page {Page})...", type, page);
 
             using var http = _httpFactory.CreateClient();
             var downloader = GetImageDownloader(type, http);
@@ -293,7 +293,7 @@ public class SearchImageCacher : INService
             if (images.Count == 0)
             {
                 var tagStr = string.Join(' ', tags.OrderByDescending(x => x));
-                maxPages[(type, tagStr)] = page;
+                _maxPages[(type, tagStr)] = page;
             }
 
             return images;
@@ -305,7 +305,7 @@ public class SearchImageCacher : INService
         catch (Exception ex)
         {
             Log.Error(ex,
-                "Error downloading an image:\nTags: {0}\nType: {1}\nPage: {2}\nMessage: {3}",
+                "Error downloading an image:\nTags: {Tags}\nType: {Type}\nPage: {Page}\nMessage: {Message}",
                 string.Join(", ", tags),
                 type,
                 page,

src/NadekoBot/Modules/Permissions/Blacklist/BlacklistService.cs

@@ -14,9 +14,9 @@ public sealed class BlacklistService : IEarlyBehavior
     private readonly DbService _db;
     private readonly IPubSub _pubSub;
     private readonly IBotCredentials _creds;
-    private IReadOnlyList<BlacklistEntry> _blacklist;
+    private IReadOnlyList<BlacklistEntry> blacklist;
 
-    private readonly TypedKey<BlacklistEntry[]> blPubKey = new("blacklist.reload");
+    private readonly TypedKey<BlacklistEntry[]> _blPubKey = new("blacklist.reload");
 
     public BlacklistService(DbService db, IPubSub pubSub, IBotCredentials creds)
     {
@@ -25,18 +25,18 @@ public sealed class BlacklistService : IEarlyBehavior
         _creds = creds;
 
         Reload(false);
-        _pubSub.Sub(blPubKey, OnReload);
+        _pubSub.Sub(_blPubKey, OnReload);
     }
 
-    private ValueTask OnReload(BlacklistEntry[] blacklist)
+    private ValueTask OnReload(BlacklistEntry[] newBlacklist)
     {
-        _blacklist = blacklist;
+        this.blacklist = newBlacklist;
         return default;
     }
 
     public Task<bool> RunBehavior(IGuild guild, IUserMessage usrMsg)
     {
-        foreach (var bl in _blacklist)
+        foreach (var bl in blacklist)
         {
             if (guild is not null && bl.Type == BlacklistType.Server && bl.ItemId == guild.Id)
             {
@@ -68,14 +68,14 @@ public sealed class BlacklistService : IEarlyBehavior
     }
 
     public IReadOnlyList<BlacklistEntry> GetBlacklist()
-        => _blacklist;
+        => blacklist;
 
     public void Reload(bool publish = true)
     {
         using var uow = _db.GetDbContext();
         var toPublish = uow.Blacklist.AsNoTracking().ToArray();
-        _blacklist = toPublish;
-        if (publish) _pubSub.Pub(blPubKey, toPublish);
+        blacklist = toPublish;
+        if (publish) _pubSub.Pub(_blPubKey, toPublish);
     }
 
     public void Blacklist(BlacklistType type, ulong id)

src/NadekoBot/Modules/Permissions/CommandCooldown/CmdCdService.cs

@@ -30,7 +30,7 @@ public class CmdCdService : ILateBlocker, INService
 
             activeCdsForGuild.Add(new() { UserId = user.Id, Command = commandName });
 
-            var _ = Task.Run(async () =>
+            _= Task.Run(async () =>
             {
                 try
                 {

src/NadekoBot/Modules/Permissions/Filter/FilterService.cs

@@ -62,7 +62,7 @@ public sealed class FilterService : IEarlyBehavior
 
         client.MessageUpdated += (oldData, newMsg, channel) =>
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 var guild = (channel as ITextChannel)?.Guild;
 

src/NadekoBot/Modules/Searches/Crypto/CryptoService.cs

@@ -60,8 +60,8 @@ public class CryptoService : INService
                 {
                     try
                     {
-                        using var _http = _httpFactory.CreateClient();
-                        var strData = await _http.GetStringAsync(
+                        using var http = _httpFactory.CreateClient();
+                        var strData = await http.GetStringAsync(
                             "https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest?"
                             + $"CMC_PRO_API_KEY={_creds.CoinmarketcapApiKey}"
                             + "&start=1"

src/NadekoBot/Modules/Searches/Feeds/FeedsService.cs

@@ -40,7 +40,7 @@ public class FeedsService : INService
         _client = client;
         _eb = eb;
 
-        var _ = Task.Run(TrackFeeds);
+        _= Task.Run(TrackFeeds);
     }
 
     public async Task<EmbedBuilder> TrackFeeds()

src/NadekoBot/Modules/Searches/Searches.cs

@@ -477,7 +477,7 @@ public partial class Searches : NadekoModule<SearchesService>
         if (!await ValidateQuery(word))
             return;
 
-        using var _http = _httpFactory.CreateClient();
+        using var http = _httpFactory.CreateClient();
         string res;
         try
         {
@@ -485,7 +485,7 @@ public partial class Searches : NadekoModule<SearchesService>
                 e =>
                 {
                     e.AbsoluteExpirationRelativeToNow = TimeSpan.FromHours(12);
-                    return _http.GetStringAsync("https://api.pearson.com/v2/dictionaries/entries?headword="
+                    return http.GetStringAsync("https://api.pearson.com/v2/dictionaries/entries?headword="
                                                 + WebUtility.UrlEncode(word));
                 });
 

src/NadekoBot/Modules/Searches/SearchesService.cs

@@ -430,8 +430,8 @@ public class SearchesService : INService
     {
         var redis = _cache.Redis;
         var db = redis.GetDatabase();
-        const string STEAM_GAME_IDS_KEY = "steam_names_to_appid";
-        var exists = await db.KeyExistsAsync(STEAM_GAME_IDS_KEY);
+        const string steamGameIdsKey = "steam_names_to_appid";
+        // var exists = await db.KeyExistsAsync(steamGameIdsKey);
 
         // if we didn't get steam name to id map already, get it
         //if (!exists)
@@ -448,7 +448,7 @@ public class SearchesService : INService
         //    }
         //}
 
-        var gamesMap = await _cache.GetOrAddCachedDataAsync(STEAM_GAME_IDS_KEY,
+        var gamesMap = await _cache.GetOrAddCachedDataAsync(steamGameIdsKey,
             async _ =>
             {
                 using var http = _httpFactory.CreateClient();

src/NadekoBot/Modules/Searches/XkcdCommands.cs

@@ -8,7 +8,7 @@ public partial class Searches
     [Group]
     public partial class XkcdCommands : NadekoSubmodule
     {
-        private const string _xkcdUrl = "https://xkcd.com";
+        private const string XKCD_URL = "https://xkcd.com";
         private readonly IHttpClientFactory _httpFactory;
 
         public XkcdCommands(IHttpClientFactory factory)
@@ -23,12 +23,12 @@ public partial class Searches
                 try
                 {
                     using var http = _httpFactory.CreateClient();
-                    var res = await http.GetStringAsync($"{_xkcdUrl}/info.0.json");
+                    var res = await http.GetStringAsync($"{XKCD_URL}/info.0.json");
                     var comic = JsonConvert.DeserializeObject<XkcdComic>(res);
                     var embed = _eb.Create()
                                    .WithOkColor()
                                    .WithImageUrl(comic.ImageLink)
-                                   .WithAuthor(comic.Title, "https://xkcd.com/s/919f27.ico", $"{_xkcdUrl}/{comic.Num}")
+                                   .WithAuthor(comic.Title, "https://xkcd.com/s/919f27.ico", $"{XKCD_URL}/{comic.Num}")
                                    .AddField(GetText(strs.comic_number), comic.Num.ToString(), true)
                                    .AddField(GetText(strs.date), $"{comic.Month}/{comic.Year}", true);
                     var sent = await ctx.Channel.EmbedAsync(embed);
@@ -57,13 +57,13 @@ public partial class Searches
             try
             {
                 using var http = _httpFactory.CreateClient();
-                var res = await http.GetStringAsync($"{_xkcdUrl}/{num}/info.0.json");
+                var res = await http.GetStringAsync($"{XKCD_URL}/{num}/info.0.json");
 
                 var comic = JsonConvert.DeserializeObject<XkcdComic>(res);
                 var embed = _eb.Create()
                                .WithOkColor()
                                .WithImageUrl(comic.ImageLink)
-                               .WithAuthor(comic.Title, "https://xkcd.com/s/919f27.ico", $"{_xkcdUrl}/{num}")
+                               .WithAuthor(comic.Title, "https://xkcd.com/s/919f27.ico", $"{XKCD_URL}/{num}")
                                .AddField(GetText(strs.comic_number), comic.Num.ToString(), true)
                                .AddField(GetText(strs.date), $"{comic.Month}/{comic.Year}", true);
 

src/NadekoBot/Modules/Utility/CommandMap/CommandMapService.cs

@@ -74,7 +74,7 @@ public class CommandMapService : IInputTransformer, INService
                     try
                     {
                         var toDelete = await channel.SendConfirmAsync(_eb, $"{input} => {newInput}");
-                        var _ = Task.Run(async () =>
+                        _= Task.Run(async () =>
                         {
                             await Task.Delay(1500);
                             await toDelete.DeleteAsync(new() { RetryMode = RetryMode.AlwaysRetry });

src/NadekoBot/Modules/Utility/Quote/QuoteCommands.cs

@@ -12,7 +12,7 @@ public partial class Utility
     [Group]
     public partial class QuoteCommands : NadekoSubmodule
     {
-        private const string _prependExport =
+        private const string PREPEND_EXPORT =
             @"# Keys are keywords, Each key has a LIST of quotes in the following format:
 # - id: Alphanumeric id used for commands related to the quote. (Note, when using .quotesimport, a new id will be generated.) 
 #   an: Author name 
@@ -279,7 +279,7 @@ public partial class Utility
             var exprsDict = quotes.GroupBy(x => x.Keyword)
                                 .ToDictionary(x => x.Key, x => x.Select(ExportedQuote.FromModel));
 
-            var text = _prependExport + _exportSerializer.Serialize(exprsDict).UnescapeUnicodeCodePoints();
+            var text = PREPEND_EXPORT + _exportSerializer.Serialize(exprsDict).UnescapeUnicodeCodePoints();
 
             await using var stream = await text.ToStream();
             await ctx.Channel.SendFileAsync(stream, "quote-export.yml");

src/NadekoBot/Modules/Utility/StreamRole/StreamRoleService.cs

@@ -11,20 +11,20 @@ public class StreamRoleService : INService
 {
     private readonly DbService _db;
     private readonly DiscordSocketClient _client;
-    private readonly ConcurrentDictionary<ulong, StreamRoleSettings> guildSettings;
+    private readonly ConcurrentDictionary<ulong, StreamRoleSettings> _guildSettings;
 
     public StreamRoleService(DiscordSocketClient client, DbService db, Bot bot)
     {
         _db = db;
         _client = client;
 
-        guildSettings = bot.AllGuildConfigs.ToDictionary(x => x.GuildId, x => x.StreamRole)
+        _guildSettings = bot.AllGuildConfigs.ToDictionary(x => x.GuildId, x => x.StreamRole)
                            .Where(x => x.Value is { Enabled: true })
                            .ToConcurrent();
 
         _client.GuildMemberUpdated += Client_GuildMemberUpdated;
 
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             try
             {
@@ -39,10 +39,10 @@ public class StreamRoleService : INService
 
     private Task Client_GuildMemberUpdated(Cacheable<SocketGuildUser, ulong> cacheable, SocketGuildUser after)
     {
-        var _ = Task.Run(async () =>
+        _= Task.Run(async () =>
         {
             //if user wasn't streaming or didn't have a game status at all
-            if (guildSettings.TryGetValue(after.Guild.Id, out var setting)) await RescanUser(after, setting);
+            if (_guildSettings.TryGetValue(after.Guild.Id, out var setting)) await RescanUser(after, setting);
         });
 
         return Task.CompletedTask;
@@ -51,6 +51,7 @@ public class StreamRoleService : INService
     /// <summary>
     ///     Adds or removes a user from a blacklist or a whitelist in the specified guild.
     /// </summary>
+    /// <param name="listType">List type</param>
     /// <param name="guild">Guild</param>
     /// <param name="action">Add or rem action</param>
     /// <param name="userId">User's Id</param>
@@ -97,7 +98,6 @@ public class StreamRoleService : INService
                     var toRemove = streamRoleSettings.Blacklist.FirstOrDefault(x => x.Equals(userObj));
                     if (toRemove is not null)
                     {
-                        success = true;
                         success = streamRoleSettings.Blacklist.Remove(toRemove);
                     }
                 }
@@ -123,7 +123,7 @@ public class StreamRoleService : INService
     /// <returns>The keyword set</returns>
     public async Task<string> SetKeyword(IGuild guild, string keyword)
     {
-        keyword = keyword?.Trim()?.ToLowerInvariant();
+        keyword = keyword?.Trim().ToLowerInvariant();
 
         await using (var uow = _db.GetDbContext())
         {
@@ -145,7 +145,7 @@ public class StreamRoleService : INService
     /// <returns>The keyword set</returns>
     public string GetKeyword(ulong guildId)
     {
-        if (guildSettings.TryGetValue(guildId, out var outSetting))
+        if (_guildSettings.TryGetValue(guildId, out var outSetting))
             return outSetting.Keyword;
 
         StreamRoleSettings setting;
@@ -193,7 +193,8 @@ public class StreamRoleService : INService
     /// <summary>
     ///     Stops the stream role feature on the specified guild.
     /// </summary>
-    /// <param name="guildId">Guild's Id</param>
+    /// <param name="guild">Guild</param>
+    /// <param name="cleanup">Whether to rescan users</param>
     public async Task StopStreamRole(IGuild guild, bool cleanup = false)
     {
         await using (var uow = _db.GetDbContext())
@@ -205,7 +206,7 @@ public class StreamRoleService : INService
             await uow.SaveChangesAsync();
         }
 
-        if (guildSettings.TryRemove(guild.Id, out var setting) && cleanup)
+        if (_guildSettings.TryRemove(guild.Id, out _) && cleanup)
             await RescanUsers(guild);
     }
 
@@ -231,7 +232,7 @@ public class StreamRoleService : INService
                 if (addRole is null)
                 {
                     await StopStreamRole(user.Guild);
-                    Log.Warning("Stream role in server {0} no longer exists. Stopping.", setting.AddRoleId);
+                    Log.Warning("Stream role in server {RoleId} no longer exists. Stopping", setting.AddRoleId);
                     return;
                 }
 
@@ -239,7 +240,7 @@ public class StreamRoleService : INService
                 if (!user.RoleIds.Contains(addRole.Id))
                 {
                     await user.AddRoleAsync(addRole);
-                    Log.Information("Added stream role to user {0} in {1} server",
+                    Log.Information("Added stream role to user {User} in {Server} server",
                         user.ToString(),
                         user.Guild.ToString());
                 }
@@ -266,7 +267,7 @@ public class StreamRoleService : INService
                         throw new StreamRoleNotFoundException();
 
                     await user.RemoveRoleAsync(addRole);
-                    Log.Information("Removed stream role from the user {0} in {1} server",
+                    Log.Information("Removed stream role from the user {User} in {Server} server",
                         user.ToString(),
                         user.Guild.ToString());
                 }
@@ -281,7 +282,7 @@ public class StreamRoleService : INService
 
     private async Task RescanUsers(IGuild guild)
     {
-        if (!guildSettings.TryGetValue(guild.Id, out var setting))
+        if (!_guildSettings.TryGetValue(guild.Id, out var setting))
             return;
 
         var addRole = guild.GetRole(setting.AddRoleId);
@@ -299,5 +300,5 @@ public class StreamRoleService : INService
     }
 
     private void UpdateCache(ulong guildId, StreamRoleSettings setting)
-        => guildSettings.AddOrUpdate(guildId, _ => setting, (_, _) => setting);
+        => _guildSettings.AddOrUpdate(guildId, _ => setting, (_, _) => setting);
 }

src/NadekoBot/Modules/Utility/UnitConversion/ConverterService.cs

@@ -11,17 +11,14 @@ public class ConverterService : INService
 
     private readonly Timer _currencyUpdater;
     private readonly TimeSpan _updateInterval = new(12, 0, 0);
-    private readonly DbService _db;
     private readonly IDataCache _cache;
     private readonly IHttpClientFactory _httpFactory;
 
     public ConverterService(
         DiscordSocketClient client,
-        DbService db,
         IDataCache cache,
         IHttpClientFactory factory)
     {
-        _db = db;
         _cache = cache;
         _httpFactory = factory;
 

src/NadekoBot/Modules/Utility/Utility.cs

@@ -81,7 +81,7 @@ public partial class Utility : NadekoModule
 
         if (ctx.Guild is not SocketGuild socketGuild)
         {
-            Log.Warning("Can't cast guild to socket guild.");
+            Log.Warning("Can't cast guild to socket guild");
             return;
         }
 
@@ -154,7 +154,15 @@ public partial class Utility : NadekoModule
         var builder = new StringBuilder();
         var user = who == MeOrBot.Me ? (IGuildUser)ctx.User : ((SocketGuild)ctx.Guild).CurrentUser;
         var perms = user.GetPermissions((ITextChannel)ctx.Channel);
-        foreach (var p in perms.GetType().GetProperties().Where(p => !p.GetGetMethod().GetParameters().Any()))
+        foreach (var p in perms.GetType()
+                               .GetProperties()
+                               .Where(static p =>
+                               {
+                                   var method = p.GetGetMethod();
+                                   if (method is null)
+                                       return false;
+                                   return !method.GetParameters().Any();
+                               }))
             builder.AppendLine($"{p.Name} : {p.GetValue(perms, null)}");
         await SendConfirmAsync(builder.ToString());
     }
@@ -355,7 +363,10 @@ public partial class Utility : NadekoModule
         if (page < 0)
             return;
 
-        var guilds = await Task.Run(() => _client.Guilds.OrderBy(g => g.Name).Skip(page * 15).Take(15));
+        var guilds = _client.Guilds.OrderBy(g => g.Name)
+                            .Skip(page * 15)
+                            .Take(15)
+                            .ToList();
 
         if (!guilds.Any())
         {

src/NadekoBot/Modules/Xp/XpService.cs

@@ -422,7 +422,7 @@ public class XpService : INService
         if (socketUser is not SocketGuildUser user || user.IsBot)
             return Task.CompletedTask;
 
-        var _ = Task.Run(() =>
+        _= Task.Run(() =>
         {
             if (before.VoiceChannel is not null) ScanChannelForVoiceXp(before.VoiceChannel);
 
@@ -514,7 +514,7 @@ public class XpService : INService
         if (arg.Author is not SocketGuildUser user || user.IsBot)
             return Task.CompletedTask;
 
-        var _ = Task.Run(() =>
+        _= Task.Run(() =>
         {
             if (!ShouldTrackXp(user, arg.Channel.Id))
                 return;

src/NadekoBot/Services/IEmbedBuilderService.cs

@@ -26,53 +26,53 @@ public class EmbedBuilderService : IEmbedBuilderService, INService
 public sealed class DiscordEmbedBuilderWrapper : IEmbedBuilder
 {
     private readonly BotConfig _botConfig;
-    private EmbedBuilder _embed;
+    private EmbedBuilder embed;
 
     public DiscordEmbedBuilderWrapper(in BotConfig botConfig, EmbedBuilder embed = null)
     {
         _botConfig = botConfig;
-        _embed = embed ?? new EmbedBuilder();
+        this.embed = embed ?? new EmbedBuilder();
     }
 
     public IEmbedBuilder WithDescription(string desc)
-        => Wrap(_embed.WithDescription(desc));
+        => Wrap(embed.WithDescription(desc));
 
     public IEmbedBuilder WithTitle(string title)
-        => Wrap(_embed.WithTitle(title));
+        => Wrap(embed.WithTitle(title));
 
     public IEmbedBuilder AddField(string title, object value, bool isInline = false)
-        => Wrap(_embed.AddField(title, value, isInline));
+        => Wrap(embed.AddField(title, value, isInline));
 
     public IEmbedBuilder WithFooter(string text, string iconUrl = null)
-        => Wrap(_embed.WithFooter(text, iconUrl));
+        => Wrap(embed.WithFooter(text, iconUrl));
 
     public IEmbedBuilder WithAuthor(string name, string iconUrl = null, string url = null)
-        => Wrap(_embed.WithAuthor(name, iconUrl, url));
+        => Wrap(embed.WithAuthor(name, iconUrl, url));
 
     public IEmbedBuilder WithUrl(string url)
-        => Wrap(_embed.WithUrl(url));
+        => Wrap(embed.WithUrl(url));
 
     public IEmbedBuilder WithImageUrl(string url)
-        => Wrap(_embed.WithImageUrl(url));
+        => Wrap(embed.WithImageUrl(url));
 
     public IEmbedBuilder WithThumbnailUrl(string url)
-        => Wrap(_embed.WithThumbnailUrl(url));
+        => Wrap(embed.WithThumbnailUrl(url));
 
     public IEmbedBuilder WithColor(EmbedColor color)
         => color switch
         {
-            EmbedColor.Ok => Wrap(_embed.WithColor(_botConfig.Color.Ok.ToDiscordColor())),
-            EmbedColor.Pending => Wrap(_embed.WithColor(_botConfig.Color.Pending.ToDiscordColor())),
-            EmbedColor.Error => Wrap(_embed.WithColor(_botConfig.Color.Error.ToDiscordColor())),
+            EmbedColor.Ok => Wrap(embed.WithColor(_botConfig.Color.Ok.ToDiscordColor())),
+            EmbedColor.Pending => Wrap(embed.WithColor(_botConfig.Color.Pending.ToDiscordColor())),
+            EmbedColor.Error => Wrap(embed.WithColor(_botConfig.Color.Error.ToDiscordColor())),
             _ => throw new ArgumentOutOfRangeException(nameof(color), "Unsupported EmbedColor type")
         };
 
     public Embed Build()
-        => _embed.Build();
+        => embed.Build();
 
     private IEmbedBuilder Wrap(EmbedBuilder eb)
     {
-        _embed = eb;
+        embed = eb;
         return this;
     }
 }

src/NadekoBot/Services/Impl/BehaviorExecutor.cs

@@ -7,25 +7,25 @@ namespace NadekoBot.Services;
 public sealed class BehaviorExecutor : IBehaviourExecutor, INService
 {
     private readonly IServiceProvider _services;
-    private IEnumerable<ILateExecutor> _lateExecutors;
-    private IEnumerable<ILateBlocker> _lateBlockers;
-    private IEnumerable<IEarlyBehavior> _earlyBehaviors;
-    private IEnumerable<IInputTransformer> _transformers;
+    private IEnumerable<ILateExecutor> lateExecutors;
+    private IEnumerable<ILateBlocker> lateBlockers;
+    private IEnumerable<IEarlyBehavior> earlyBehaviors;
+    private IEnumerable<IInputTransformer> transformers;
 
     public BehaviorExecutor(IServiceProvider services)
         => _services = services;
 
     public void Initialize()
     {
-        _lateExecutors = _services.GetServices<ILateExecutor>();
-        _lateBlockers = _services.GetServices<ILateBlocker>();
-        _earlyBehaviors = _services.GetServices<IEarlyBehavior>().OrderByDescending(x => x.Priority);
-        _transformers = _services.GetServices<IInputTransformer>();
+        lateExecutors = _services.GetServices<ILateExecutor>();
+        lateBlockers = _services.GetServices<ILateBlocker>();
+        earlyBehaviors = _services.GetServices<IEarlyBehavior>().OrderByDescending(x => x.Priority);
+        transformers = _services.GetServices<IInputTransformer>();
     }
 
     public async Task<bool> RunEarlyBehavioursAsync(SocketGuild guild, IUserMessage usrMsg)
     {
-        foreach (var beh in _earlyBehaviors)
+        foreach (var beh in earlyBehaviors)
             if (await beh.RunBehavior(guild, usrMsg))
                 return true;
 
@@ -35,7 +35,7 @@ public sealed class BehaviorExecutor : IBehaviourExecutor, INService
     public async Task<string> RunInputTransformersAsync(SocketGuild guild, IUserMessage usrMsg)
     {
         var messageContent = usrMsg.Content;
-        foreach (var exec in _transformers)
+        foreach (var exec in transformers)
         {
             string newContent;
             if ((newContent = await exec.TransformInput(guild, usrMsg.Channel, usrMsg.Author, messageContent))
@@ -51,10 +51,10 @@ public sealed class BehaviorExecutor : IBehaviourExecutor, INService
 
     public async Task<bool> RunLateBlockersAsync(ICommandContext ctx, CommandInfo cmd)
     {
-        foreach (var exec in _lateBlockers)
+        foreach (var exec in lateBlockers)
             if (await exec.TryBlockLate(ctx, cmd.Module.GetTopLevelModule().Name, cmd))
             {
-                Log.Information("Late blocking User [{0}] Command: [{1}] in [{2}]",
+                Log.Information("Late blocking User [{User}] Command: [{Command}] in [{Module}]",
                     ctx.User,
                     cmd.Aliases[0],
                     exec.GetType().Name);
@@ -66,7 +66,7 @@ public sealed class BehaviorExecutor : IBehaviourExecutor, INService
 
     public async Task RunLateExecutorsAsync(SocketGuild guild, IUserMessage usrMsg)
     {
-        foreach (var exec in _lateExecutors)
+        foreach (var exec in lateExecutors)
             try
             {
                 await exec.LateExecute(guild, usrMsg);

src/NadekoBot/Services/Impl/GoogleApiService.cs

@@ -13,10 +13,10 @@ namespace NadekoBot.Services;
 
 public class GoogleApiService : IGoogleApiService, INService
 {
-    private const string SearchEngineId = "018084019232060951019:hs5piey28-e";
+    private const string SEARCH_ENGINE_ID = "018084019232060951019:hs5piey28-e";
 
     private static readonly Regex
-        plRegex = new("(?:youtu\\.be\\/|list=)(?<id>[\\da-zA-Z\\-_]*)", RegexOptions.Compiled);
+        _plRegex = new("(?:youtu\\.be\\/|list=)(?<id>[\\da-zA-Z\\-_]*)", RegexOptions.Compiled);
 
     public IReadOnlyDictionary<string, string> Languages { get; } = new Dictionary<string, string>
     {
@@ -151,9 +151,9 @@ public class GoogleApiService : IGoogleApiService, INService
         { "yi", "yi" }
     };
 
-    private readonly YouTubeService yt;
-    private readonly UrlshortenerService sh;
-    private readonly CustomsearchService cs;
+    private readonly YouTubeService _yt;
+    private readonly UrlshortenerService _sh;
+    private readonly CustomsearchService _cs;
 
     //private readonly Regex YtVideoIdRegex = new Regex(@"(?:youtube\.com\/\S*(?:(?:\/e(?:mbed))?\/|watch\?(?:\S*?&?v\=))|youtu\.be\/)(?<id>[a-zA-Z0-9_-]{6,11})", RegexOptions.Compiled);
     private readonly IBotCredentials _creds;
@@ -166,9 +166,9 @@ public class GoogleApiService : IGoogleApiService, INService
 
         var bcs = new BaseClientService.Initializer { ApplicationName = "Nadeko Bot", ApiKey = _creds.GoogleApiKey };
 
-        yt = new(bcs);
-        sh = new(bcs);
-        cs = new(bcs);
+        _yt = new(bcs);
+        _sh = new(bcs);
+        _cs = new(bcs);
     }
 
     public async Task<IEnumerable<string>> GetPlaylistIdsByKeywordsAsync(string keywords, int count = 1)
@@ -180,9 +180,9 @@ public class GoogleApiService : IGoogleApiService, INService
         if (count <= 0)
             throw new ArgumentOutOfRangeException(nameof(count));
 
-        var match = plRegex.Match(keywords);
+        var match = _plRegex.Match(keywords);
         if (match.Length > 1) return new[] { match.Groups["id"].Value };
-        var query = yt.Search.List("snippet");
+        var query = _yt.Search.List("snippet");
         query.MaxResults = count;
         query.Type = "playlist";
         query.Q = keywords;
@@ -199,7 +199,7 @@ public class GoogleApiService : IGoogleApiService, INService
 
         if (count <= 0)
             throw new ArgumentOutOfRangeException(nameof(count));
-        var query = yt.Search.List("snippet");
+        var query = _yt.Search.List("snippet");
         query.MaxResults = count;
         query.RelatedToVideoId = id;
         query.Type = "video";
@@ -215,7 +215,7 @@ public class GoogleApiService : IGoogleApiService, INService
         if (count <= 0)
             throw new ArgumentOutOfRangeException(nameof(count));
 
-        var query = yt.Search.List("snippet");
+        var query = _yt.Search.List("snippet");
         query.MaxResults = count;
         query.Q = keywords;
         query.Type = "video";
@@ -234,7 +234,7 @@ public class GoogleApiService : IGoogleApiService, INService
         if (count <= 0)
             throw new ArgumentOutOfRangeException(nameof(count));
 
-        var query = yt.Search.List("snippet");
+        var query = _yt.Search.List("snippet");
         query.MaxResults = count;
         query.Q = keywords;
         query.Type = "video";
@@ -256,7 +256,7 @@ public class GoogleApiService : IGoogleApiService, INService
 
         try
         {
-            var response = await sh.Url.Insert(new() { LongUrl = url }).ExecuteAsync();
+            var response = await _sh.Url.Insert(new() { LongUrl = url }).ExecuteAsync();
             return response.Id;
         }
         catch (GoogleApiException ex) when (ex.HttpStatusCode == HttpStatusCode.Forbidden)
@@ -288,7 +288,7 @@ public class GoogleApiService : IGoogleApiService, INService
             var toGet = count > 50 ? 50 : count;
             count -= toGet;
 
-            var query = yt.PlaylistItems.List("contentDetails");
+            var query = _yt.PlaylistItems.List("contentDetails");
             query.MaxResults = toGet;
             query.PlaylistId = playlistId;
             query.PageToken = nextPageToken;
@@ -318,7 +318,7 @@ public class GoogleApiService : IGoogleApiService, INService
             var toGet = remaining > 50 ? 50 : remaining;
             remaining -= toGet;
 
-            var q = yt.Videos.List("contentDetails");
+            var q = _yt.Videos.List("contentDetails");
             q.Id = string.Join(",", videoIdsList.Take(toGet));
             videoIdsList = videoIdsList.Skip(toGet).ToList();
             var items = (await q.ExecuteAsync()).Items;
@@ -334,9 +334,9 @@ public class GoogleApiService : IGoogleApiService, INService
         if (string.IsNullOrWhiteSpace(query))
             throw new ArgumentNullException(nameof(query));
 
-        var req = cs.Cse.List();
+        var req = _cs.Cse.List();
         req.Q = query;
-        req.Cx = SearchEngineId;
+        req.Cx = SEARCH_ENGINE_ID;
         req.Num = 1;
         req.Fields = "items(image(contextLink,thumbnailLink),link)";
         req.SearchType = CseResource.ListRequest.SearchTypeEnum.Image;

src/NadekoBot/Services/Impl/RedisCache.cs

@@ -15,7 +15,7 @@ public class RedisCache : IDataCache
     private readonly string _redisKey;
     private readonly EndPoint _redisEndpoint;
 
-    private readonly object timelyLock = new();
+    private readonly object _timelyLock = new();
 
     public RedisCache(
         ConnectionMultiplexer redis,
@@ -36,77 +36,77 @@ public class RedisCache : IDataCache
     // can re-use the same image/anime data
     public async Task<(bool Success, byte[] Data)> TryGetImageDataAsync(Uri key)
     {
-        var _db = Redis.GetDatabase();
-        byte[] x = await _db.StringGetAsync("image_" + key);
+        var db = Redis.GetDatabase();
+        byte[] x = await db.StringGetAsync("image_" + key);
         return (x is not null, x);
     }
 
     public Task SetImageDataAsync(Uri key, byte[] data)
     {
-        var _db = Redis.GetDatabase();
-        return _db.StringSetAsync("image_" + key, data);
+        var db = Redis.GetDatabase();
+        return db.StringSetAsync("image_" + key, data);
     }
 
     public async Task<(bool Success, string Data)> TryGetAnimeDataAsync(string key)
     {
-        var _db = Redis.GetDatabase();
-        string x = await _db.StringGetAsync("anime_" + key);
+        var db = Redis.GetDatabase();
+        string x = await db.StringGetAsync("anime_" + key);
         return (x is not null, x);
     }
 
     public Task SetAnimeDataAsync(string key, string data)
     {
-        var _db = Redis.GetDatabase();
-        return _db.StringSetAsync("anime_" + key, data, TimeSpan.FromHours(3));
+        var db = Redis.GetDatabase();
+        return db.StringSetAsync("anime_" + key, data, TimeSpan.FromHours(3));
     }
 
     public async Task<(bool Success, string Data)> TryGetNovelDataAsync(string key)
     {
-        var _db = Redis.GetDatabase();
-        string x = await _db.StringGetAsync("novel_" + key);
+        var db = Redis.GetDatabase();
+        string x = await db.StringGetAsync("novel_" + key);
         return (x is not null, x);
     }
 
     public Task SetNovelDataAsync(string key, string data)
     {
-        var _db = Redis.GetDatabase();
-        return _db.StringSetAsync("novel_" + key, data, TimeSpan.FromHours(3));
+        var db = Redis.GetDatabase();
+        return db.StringSetAsync("novel_" + key, data, TimeSpan.FromHours(3));
     }
 
     public TimeSpan? AddTimelyClaim(ulong id, int period)
     {
         if (period == 0)
             return null;
-        lock (timelyLock)
+        lock (_timelyLock)
         {
             var time = TimeSpan.FromHours(period);
-            var _db = Redis.GetDatabase();
-            if ((bool?)_db.StringGet($"{_redisKey}_timelyclaim_{id}") is null)
+            var db = Redis.GetDatabase();
+            if ((bool?)db.StringGet($"{_redisKey}_timelyclaim_{id}") is null)
             {
-                _db.StringSet($"{_redisKey}_timelyclaim_{id}", true, time);
+                db.StringSet($"{_redisKey}_timelyclaim_{id}", true, time);
                 return null;
             }
 
-            return _db.KeyTimeToLive($"{_redisKey}_timelyclaim_{id}");
+            return db.KeyTimeToLive($"{_redisKey}_timelyclaim_{id}");
         }
     }
 
     public void RemoveAllTimelyClaims()
     {
         var server = Redis.GetServer(_redisEndpoint);
-        var _db = Redis.GetDatabase();
+        var db = Redis.GetDatabase();
         foreach (var k in server.Keys(pattern: $"{_redisKey}_timelyclaim_*"))
-            _db.KeyDelete(k, CommandFlags.FireAndForget);
+            db.KeyDelete(k, CommandFlags.FireAndForget);
     }
 
     public bool TryAddAffinityCooldown(ulong userId, out TimeSpan? time)
     {
-        var _db = Redis.GetDatabase();
-        time = _db.KeyTimeToLive($"{_redisKey}_affinity_{userId}");
+        var db = Redis.GetDatabase();
+        time = db.KeyTimeToLive($"{_redisKey}_affinity_{userId}");
         if (time is null)
         {
             time = TimeSpan.FromMinutes(30);
-            _db.StringSet($"{_redisKey}_affinity_{userId}", true, time);
+            db.StringSet($"{_redisKey}_affinity_{userId}", true, time);
             return true;
         }
 
@@ -115,12 +115,12 @@ public class RedisCache : IDataCache
 
     public bool TryAddDivorceCooldown(ulong userId, out TimeSpan? time)
     {
-        var _db = Redis.GetDatabase();
-        time = _db.KeyTimeToLive($"{_redisKey}_divorce_{userId}");
+        var db = Redis.GetDatabase();
+        time = db.KeyTimeToLive($"{_redisKey}_divorce_{userId}");
         if (time is null)
         {
             time = TimeSpan.FromHours(6);
-            _db.StringSet($"{_redisKey}_divorce_{userId}", true, time);
+            db.StringSet($"{_redisKey}_divorce_{userId}", true, time);
             return true;
         }
 
@@ -129,42 +129,43 @@ public class RedisCache : IDataCache
 
     public Task SetStreamDataAsync(string url, string data)
     {
-        var _db = Redis.GetDatabase();
-        return _db.StringSetAsync($"{_redisKey}_stream_{url}", data, TimeSpan.FromHours(6));
+        var db = Redis.GetDatabase();
+        return db.StringSetAsync($"{_redisKey}_stream_{url}", data, TimeSpan.FromHours(6));
     }
 
     public bool TryGetStreamData(string url, out string dataStr)
     {
-        var _db = Redis.GetDatabase();
-        dataStr = _db.StringGet($"{_redisKey}_stream_{url}");
+        var db = Redis.GetDatabase();
+        dataStr = db.StringGet($"{_redisKey}_stream_{url}");
 
         return !string.IsNullOrWhiteSpace(dataStr);
     }
 
     public TimeSpan? TryAddRatelimit(ulong id, string name, int expireIn)
     {
-        var _db = Redis.GetDatabase();
-        if (_db.StringSet($"{_redisKey}_ratelimit_{id}_{name}",
+        var db = Redis.GetDatabase();
+        if (db.StringSet($"{_redisKey}_ratelimit_{id}_{name}",
                 0, // i don't use the value
                 TimeSpan.FromSeconds(expireIn),
                 When.NotExists))
             return null;
 
-        return _db.KeyTimeToLive($"{_redisKey}_ratelimit_{id}_{name}");
+        return db.KeyTimeToLive($"{_redisKey}_ratelimit_{id}_{name}");
     }
 
     public bool TryGetEconomy(out string data)
     {
-        var _db = Redis.GetDatabase();
-        if ((data = _db.StringGet($"{_redisKey}_economy")) is not null) return true;
+        var db = Redis.GetDatabase();
+        data = db.StringGet($"{_redisKey}_economy");
+        if (data is not null) return true;
 
         return false;
     }
 
     public void SetEconomy(string data)
     {
-        var _db = Redis.GetDatabase();
-        _db.StringSet($"{_redisKey}_economy", data, TimeSpan.FromMinutes(3));
+        var db = Redis.GetDatabase();
+        db.StringSet($"{_redisKey}_economy", data, TimeSpan.FromMinutes(3));
     }
 
     public async Task<TOut> GetOrAddCachedDataAsync<TParam, TOut>(
@@ -174,9 +175,9 @@ public class RedisCache : IDataCache
         TimeSpan expiry)
         where TOut : class
     {
-        var _db = Redis.GetDatabase();
+        var db = Redis.GetDatabase();
 
-        var data = await _db.StringGetAsync(key);
+        var data = await db.StringGetAsync(key);
         if (!data.HasValue)
         {
             var obj = await factory(param);
@@ -184,7 +185,7 @@ public class RedisCache : IDataCache
             if (obj is null)
                 return default;
 
-            await _db.StringSetAsync(key, JsonConvert.SerializeObject(obj), expiry);
+            await db.StringSetAsync(key, JsonConvert.SerializeObject(obj), expiry);
 
             return obj;
         }

src/NadekoBot/Services/Impl/RedisImageExtensions.cs

@@ -3,9 +3,9 @@ namespace NadekoBot.Services;
 
 public static class RedisImageExtensions
 {
-    private const string OldCdnUrl = "nadeko-pictures.nyc3.digitaloceanspaces.com";
-    private const string NewCdnUrl = "cdn.nadeko.bot";
+    private const string OLD_CDN_URL = "nadeko-pictures.nyc3.digitaloceanspaces.com";
+    private const string NEW_CDN_URL = "cdn.nadeko.bot";
 
     public static Uri ToNewCdn(this Uri uri)
-        => new(uri.ToString().Replace(OldCdnUrl, NewCdnUrl));
+        => new(uri.ToString().Replace(OLD_CDN_URL, NEW_CDN_URL));
 }

src/NadekoBot/Services/Impl/StatsService.cs

@@ -58,7 +58,7 @@ public class StatsService : IStatsService, IReadyExecutor, INService, IDisposabl
 
         _client.ChannelCreated += c =>
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 if (c is ITextChannel)
                     Interlocked.Increment(ref textChannels);
@@ -71,7 +71,7 @@ public class StatsService : IStatsService, IReadyExecutor, INService, IDisposabl
 
         _client.ChannelDestroyed += c =>
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 if (c is ITextChannel)
                     Interlocked.Decrement(ref textChannels);
@@ -84,7 +84,7 @@ public class StatsService : IStatsService, IReadyExecutor, INService, IDisposabl
 
         _client.GuildAvailable += g =>
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 var tc = g.Channels.Count(cx => cx is ITextChannel);
                 var vc = g.Channels.Count - tc;
@@ -96,7 +96,7 @@ public class StatsService : IStatsService, IReadyExecutor, INService, IDisposabl
 
         _client.JoinedGuild += g =>
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 var tc = g.Channels.Count(cx => cx is ITextChannel);
                 var vc = g.Channels.Count - tc;
@@ -108,7 +108,7 @@ public class StatsService : IStatsService, IReadyExecutor, INService, IDisposabl
 
         _client.GuildUnavailable += g =>
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 var tc = g.Channels.Count(cx => cx is ITextChannel);
                 var vc = g.Channels.Count - tc;
@@ -121,7 +121,7 @@ public class StatsService : IStatsService, IReadyExecutor, INService, IDisposabl
 
         _client.LeftGuild += g =>
         {
-            var _ = Task.Run(() =>
+            _= Task.Run(() =>
             {
                 var tc = g.Channels.Count(cx => cx is ITextChannel);
                 var vc = g.Channels.Count - tc;