Address Rider inspections

app/Desktop/App.axaml.cs

@@ -4,7 +4,7 @@ using Avalonia.Markup.Xaml;
 using DHT.Desktop.Main;
 
 namespace DHT.Desktop {
-	public class App : Application {
+	sealed class App : Application {
 		public override void Initialize() {
 			AvaloniaXamlLoader.Load(this);
 		}

app/Desktop/Arguments.cs

@@ -2,7 +2,7 @@ using System;
 using DHT.Utils.Logging;
 
 namespace DHT.Desktop {
-	public class Arguments {
+	sealed class Arguments {
 		private static readonly Log Log = Log.ForType<Arguments>();
 
 		public static Arguments Empty => new(Array.Empty<string>());

app/Desktop/Common/DatabaseGui.cs

@@ -10,7 +10,7 @@ using DHT.Server.Database.Sqlite;
 using DHT.Utils.Logging;
 
 namespace DHT.Desktop.Common {
-	public static class DatabaseGui {
+	static class DatabaseGui {
 		private static readonly Log Log = Log.ForType(typeof(DatabaseGui));
 
 		private const string DatabaseFileInitialName = "archive.dht";

app/Desktop/Common/NumberValueConverter.cs

@@ -3,7 +3,7 @@ using System.Globalization;
 using Avalonia.Data.Converters;
 
 namespace DHT.Desktop.Common {
-	public class NumberValueConverter : IValueConverter {
+	sealed class NumberValueConverter : IValueConverter {
 		public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
 			return string.Format(Program.Culture, "{0:n0}", value);
 		}

app/Desktop/Common/TextFormat.cs

@@ -1,5 +1,5 @@
 namespace DHT.Desktop.Common {
-	public static class TextFormat {
+	static class TextFormat {
 		public static string Format(this int number) {
 			return number.ToString("N0", Program.Culture);
 		}

app/Desktop/Dialogs/CheckBox/CheckBoxDialog.axaml.cs

@@ -5,7 +5,7 @@ using Avalonia.Markup.Xaml;
 using DHT.Desktop.Dialogs.Message;
 
 namespace DHT.Desktop.Dialogs.CheckBox {
-	public class CheckBoxDialog : Window {
+	sealed class CheckBoxDialog : Window {
 		public CheckBoxDialog() {
 			InitializeComponent();
 			#if DEBUG

app/Desktop/Dialogs/CheckBox/CheckBoxDialogModel.cs

@@ -5,7 +5,7 @@ using System.Linq;
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Dialogs.CheckBox {
-	public class CheckBoxDialogModel : BaseModel {
+	class CheckBoxDialogModel : BaseModel {
 		public string Title { get; init; } = "";
 
 		private IReadOnlyList<CheckBoxItem> items = Array.Empty<CheckBoxItem>();
@@ -28,8 +28,8 @@ namespace DHT.Desktop.Dialogs.CheckBox {
 
 		private bool pauseCheckEvents = false;
 
-		public bool AreAllSelected => Items.All(item => item.Checked);
-		public bool AreNoneSelected => Items.All(item => !item.Checked);
+		public bool AreAllSelected => Items.All(static item => item.Checked);
+		public bool AreNoneSelected => Items.All(static item => !item.Checked);
 
 		public void SelectAll() => SetAllChecked(true);
 		public void SelectNone() => SetAllChecked(false);
@@ -57,10 +57,10 @@ namespace DHT.Desktop.Dialogs.CheckBox {
 		}
 	}
 
-	public class CheckBoxDialogModel<T> : CheckBoxDialogModel {
+	sealed class CheckBoxDialogModel<T> : CheckBoxDialogModel {
 		public new IReadOnlyList<CheckBoxItem<T>> Items { get; }
 
-		public IEnumerable<CheckBoxItem<T>> SelectedItems => Items.Where(item => item.Checked);
+		public IEnumerable<CheckBoxItem<T>> SelectedItems => Items.Where(static item => item.Checked);
 
 		public CheckBoxDialogModel(IEnumerable<CheckBoxItem<T>> items) {
 			this.Items = new List<CheckBoxItem<T>>(items);

app/Desktop/Dialogs/CheckBox/CheckBoxItem.cs

@@ -1,7 +1,7 @@
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Dialogs.CheckBox {
-	public class CheckBoxItem : BaseModel {
+	class CheckBoxItem : BaseModel {
 		public string Title { get; init; } = "";
 		public object? Item { get; init; } = null;
 
@@ -13,7 +13,7 @@ namespace DHT.Desktop.Dialogs.CheckBox {
 		}
 	}
 
-	public class CheckBoxItem<T> : CheckBoxItem {
+	sealed class CheckBoxItem<T> : CheckBoxItem {
 		public new T Item { get; }
 
 		public CheckBoxItem(T item) {

app/Desktop/Dialogs/Message/Dialog.cs

@@ -3,7 +3,7 @@ using Avalonia.Controls;
 using Avalonia.Threading;
 
 namespace DHT.Desktop.Dialogs.Message {
-	public static class Dialog {
+	static class Dialog {
 		public static async Task ShowOk(Window owner, string title, string message) {
 			if (!Dispatcher.UIThread.CheckAccess()) {
 				await Dispatcher.UIThread.InvokeAsync(() => ShowOk(owner, title, message));

app/Desktop/Dialogs/Message/DialogResult.cs

@@ -1,7 +1,7 @@
 using System;
 
 namespace DHT.Desktop.Dialogs.Message {
-	public static class DialogResult {
+	static class DialogResult {
 		public enum All {
 			Ok,
 			Yes,

app/Desktop/Dialogs/Message/MessageDialog.axaml.cs

@@ -4,7 +4,7 @@ using Avalonia.Interactivity;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Dialogs.Message {
-	public class MessageDialog : Window {
+	sealed class MessageDialog : Window {
 		public MessageDialog() {
 			InitializeComponent();
 			#if DEBUG

app/Desktop/Dialogs/Message/MessageDialogModel.cs

@@ -1,5 +1,5 @@
 namespace DHT.Desktop.Dialogs.Message {
-	public class MessageDialogModel {
+	sealed class MessageDialogModel {
 		public string Title { get; init; } = "";
 		public string Message { get; init; } = "";
 

app/Desktop/Dialogs/Progress/IProgressCallback.cs

@@ -1,7 +1,7 @@
 using System.Threading.Tasks;
 
 namespace DHT.Desktop.Dialogs.Progress {
-	public interface IProgressCallback {
+	interface IProgressCallback {
 		Task Update(string message, int finishedItems, int totalItems);
 	}
 }

app/Desktop/Dialogs/Progress/ProgressDialog.axaml.cs

@@ -6,7 +6,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Dialogs.Progress {
-	public class ProgressDialog : Window {
+	sealed class ProgressDialog : Window {
 		private bool isFinished = false;
 
 		public ProgressDialog() {

app/Desktop/Dialogs/Progress/ProgressDialogModel.cs

@@ -5,7 +5,7 @@ using DHT.Desktop.Common;
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Dialogs.Progress {
-	public class ProgressDialogModel : BaseModel {
+	sealed class ProgressDialogModel : BaseModel {
 		public string Title { get; init; } = "";
 
 		private string message = "";
@@ -46,7 +46,7 @@ namespace DHT.Desktop.Dialogs.Progress {
 
 		public delegate Task TaskRunner(IProgressCallback callback);
 
-		private class Callback : IProgressCallback {
+		private sealed class Callback : IProgressCallback {
 			private readonly ProgressDialogModel model;
 
 			public Callback(ProgressDialogModel model) {

app/Desktop/Main/AboutWindow.axaml.cs

@@ -3,7 +3,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main {
-	public class AboutWindow : Window {
+	sealed class AboutWindow : Window {
 		public AboutWindow() {
 			InitializeComponent();
 			#if DEBUG

app/Desktop/Main/AboutWindowModel.cs

@@ -1,7 +1,7 @@
 using System.Diagnostics;
 
 namespace DHT.Desktop.Main {
-	public class AboutWindowModel {
+	sealed class AboutWindowModel {
 		public void ShowOfficialWebsite() {
 			OpenUrl("https://dht.chylex.com");
 		}

app/Desktop/Main/Controls/FilterPanel.axaml.cs

@@ -2,7 +2,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main.Controls {
-	public class FilterPanel : UserControl {
+	sealed class FilterPanel : UserControl {
 		private CalendarDatePicker StartDatePicker => this.FindControl<CalendarDatePicker>("StartDatePicker");
 		private CalendarDatePicker EndDatePicker => this.FindControl<CalendarDatePicker>("EndDatePicker");
 

app/Desktop/Main/Controls/FilterPanelModel.cs

@@ -14,7 +14,7 @@ using DHT.Server.Database;
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Main.Controls {
-	public class FilterPanelModel : BaseModel {
+	sealed class FilterPanelModel : BaseModel {
 		private static readonly HashSet<string> FilterProperties = new () {
 			nameof(FilterByDate),
 			nameof(StartDate),
@@ -58,7 +58,7 @@ namespace DHT.Desktop.Main.Controls {
 		}
 
 		public HashSet<ulong> IncludedChannels {
-			get => includedChannels ?? db.GetAllChannels().Select(channel => channel.Id).ToHashSet();
+			get => includedChannels ?? db.GetAllChannels().Select(static channel => channel.Id).ToHashSet();
 			set => Change(ref includedChannels, value);
 		}
 
@@ -68,7 +68,7 @@ namespace DHT.Desktop.Main.Controls {
 		}
 
 		public HashSet<ulong> IncludedUsers {
-			get => includedUsers ?? db.GetAllUsers().Select(user => user.Id).ToHashSet();
+			get => includedUsers ?? db.GetAllUsers().Select(static user => user.Id).ToHashSet();
 			set => Change(ref includedUsers, value);
 		}
 
@@ -126,7 +126,7 @@ namespace DHT.Desktop.Main.Controls {
 		}
 
 		public async void OpenChannelFilterDialog() {
-			var servers = db.GetAllServers().ToDictionary(server => server.Id);
+			var servers = db.GetAllServers().ToDictionary(static server => server.Id);
 			var items = new List<CheckBoxItem<ulong>>();
 			var included = IncludedChannels;
 
@@ -222,7 +222,7 @@ namespace DHT.Desktop.Main.Controls {
 		}
 
 		private static async Task<HashSet<ulong>?> OpenIdFilterDialog(Window window, string title, List<CheckBoxItem<ulong>> items) {
-			items.Sort((item1, item2) => item1.Title.CompareTo(item2.Title));
+			items.Sort(static (item1, item2) => item1.Title.CompareTo(item2.Title));
 
 			var model = new CheckBoxDialogModel<ulong>(items) {
 				Title = title
@@ -231,7 +231,7 @@ namespace DHT.Desktop.Main.Controls {
 			var dialog = new CheckBoxDialog { DataContext = model };
 			var result = await dialog.ShowDialog<DialogResult.OkCancel>(window);
 
-			return result == DialogResult.OkCancel.Ok ? model.SelectedItems.Select(item => item.Item).ToHashSet() : null;
+			return result == DialogResult.OkCancel.Ok ? model.SelectedItems.Select(static item => item.Item).ToHashSet() : null;
 		}
 	}
 }

app/Desktop/Main/Controls/StatusBar.axaml.cs

@@ -2,7 +2,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main.Controls {
-	public class StatusBar : UserControl {
+	sealed class StatusBar : UserControl {
 		public StatusBar() {
 			InitializeComponent();
 		}

app/Desktop/Main/Controls/StatusBarModel.cs

@@ -3,7 +3,7 @@ using DHT.Server.Database;
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Main.Controls {
-	public class StatusBarModel : BaseModel {
+	sealed class StatusBarModel : BaseModel {
 		public DatabaseStatistics DatabaseStatistics { get; }
 
 		private Status status = Status.Stopped;

app/Desktop/Main/MainContentScreen.axaml.cs

@@ -2,7 +2,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main {
-	public class MainContentScreen : UserControl {
+	sealed class MainContentScreen : UserControl {
 		public MainContentScreen() {
 			InitializeComponent();
 		}

app/Desktop/Main/MainContentScreenModel.cs

@@ -6,7 +6,7 @@ using DHT.Server.Database;
 using DHT.Server.Service;
 
 namespace DHT.Desktop.Main {
-	public class MainContentScreenModel : IDisposable {
+	sealed class MainContentScreenModel : IDisposable {
 		public DatabasePage DatabasePage { get; }
 		private DatabasePageModel DatabasePageModel { get; }
 
@@ -19,8 +19,12 @@ namespace DHT.Desktop.Main {
 		public StatusBarModel StatusBarModel { get; }
 
 		public event EventHandler? DatabaseClosed {
-			add { DatabasePageModel.DatabaseClosed += value; }
-			remove { DatabasePageModel.DatabaseClosed -= value; }
+			add {
+				DatabasePageModel.DatabaseClosed += value;
+			}
+			remove {
+				DatabasePageModel.DatabaseClosed -= value;
+			}
 		}
 
 		[Obsolete("Designer")]
@@ -51,7 +55,6 @@ namespace DHT.Desktop.Main {
 
 		public void Dispose() {
 			TrackingPageModel.Dispose();
-			GC.SuppressFinalize(this);
 		}
 	}
 }

app/Desktop/Main/MainWindow.axaml.cs

@@ -4,7 +4,7 @@ using Avalonia.Markup.Xaml;
 using JetBrains.Annotations;
 
 namespace DHT.Desktop.Main {
-	public class MainWindow : Window {
+	sealed class MainWindow : Window {
 		[UsedImplicitly]
 		public MainWindow() {
 			InitializeComponent(Arguments.Empty);

app/Desktop/Main/MainWindowModel.cs

@@ -10,7 +10,7 @@ using DHT.Server.Database;
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Main {
-	public class MainWindowModel : BaseModel {
+	sealed class MainWindowModel : BaseModel {
 		private const string DefaultTitle = "Discord History Tracker";
 
 		public string Title { get; private set; } = DefaultTitle;

app/Desktop/Main/Pages/DatabasePage.axaml.cs

@@ -2,7 +2,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main.Pages {
-	public class DatabasePage : UserControl {
+	sealed class DatabasePage : UserControl {
 		public DatabasePage() {
 			InitializeComponent();
 		}

app/Desktop/Main/Pages/DatabasePageModel.cs

@@ -13,7 +13,7 @@ using DHT.Utils.Logging;
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Main.Pages {
-	public class DatabasePageModel : BaseModel {
+	sealed class DatabasePageModel : BaseModel {
 		private static readonly Log Log = Log.ForType<DatabasePageModel>();
 
 		public IDatabaseFile Db { get; }

app/Desktop/Main/Pages/TrackingPage.axaml.cs

@@ -5,7 +5,7 @@ using Avalonia.Interactivity;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main.Pages {
-	public class TrackingPage : UserControl {
+	sealed class TrackingPage : UserControl {
 		private bool isCopyingScript;
 
 		public TrackingPage() {

app/Desktop/Main/Pages/TrackingPageModel.cs

@@ -12,7 +12,7 @@ using DHT.Utils.Models;
 using static DHT.Desktop.Program;
 
 namespace DHT.Desktop.Main.Pages {
-	public class TrackingPageModel : BaseModel, IDisposable {
+	sealed class TrackingPageModel : BaseModel, IDisposable {
 		private static readonly Log Log = Log.ForType<TrackingPageModel>();
 
 		internal static string ServerPort { get; set; } = ServerUtils.FindAvailablePort(50000, 60000).ToString();
@@ -76,7 +76,6 @@ namespace DHT.Desktop.Main.Pages {
 			ServerLauncher.ServerManagementExceptionCaught -= ServerLauncherOnServerManagementExceptionCaught;
 			ServerLauncher.ServerStatusChanged -= ServerLauncherOnServerStatusChanged;
 			ServerLauncher.Stop();
-			GC.SuppressFinalize(this);
 		}
 
 		private async Task<bool> StartServer() {

app/Desktop/Main/Pages/ViewerPage.axaml.cs

@@ -2,7 +2,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main.Pages {
-	public class ViewerPage : UserControl {
+	sealed class ViewerPage : UserControl {
 		public ViewerPage() {
 			InitializeComponent();
 		}

app/Desktop/Main/Pages/ViewerPageModel.cs

@@ -16,7 +16,7 @@ using DHT.Utils.Models;
 using static DHT.Desktop.Program;
 
 namespace DHT.Desktop.Main.Pages {
-	public class ViewerPageModel : BaseModel {
+	sealed class ViewerPageModel : BaseModel {
 		public string ExportedMessageText { get; private set; } = "";
 
 		public bool DatabaseToolFilterModeKeep { get; set; } = true;

app/Desktop/Main/WelcomeScreen.axaml.cs

@@ -2,7 +2,7 @@ using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 
 namespace DHT.Desktop.Main {
-	public class WelcomeScreen : UserControl {
+	sealed class WelcomeScreen : UserControl {
 		public WelcomeScreen() {
 			InitializeComponent();
 		}

app/Desktop/Main/WelcomeScreenModel.cs

@@ -8,7 +8,7 @@ using DHT.Server.Database;
 using DHT.Utils.Models;
 
 namespace DHT.Desktop.Main {
-	public class WelcomeScreenModel : BaseModel {
+	sealed class WelcomeScreenModel : BaseModel {
 		public string Version => Program.Version;
 
 		public IDatabaseFile? Db { get; private set; }

app/Desktop/Program.cs

@@ -4,7 +4,7 @@ using Avalonia;
 using DHT.Utils.Resources;
 
 namespace DHT.Desktop {
-	internal static class Program {
+	static class Program {
 		public static string Version { get; }
 		public static CultureInfo Culture { get; }
 		public static ResourceLoader Resources { get; }

app/Server/Data/Attachment.cs

@@ -1,9 +1,9 @@
 namespace DHT.Server.Data {
 	public readonly struct Attachment {
-		public ulong Id { get; init; }
-		public string Name { get; init; }
-		public string? Type { get; init; }
-		public string Url { get; init; }
-		public ulong Size { get; init; }
+		public ulong Id { get; internal init; }
+		public string Name { get; internal init; }
+		public string? Type { get; internal init; }
+		public string Url { get; internal init; }
+		public ulong Size { get; internal init; }
 	}
 }

app/Server/Data/Channel.cs

@@ -1,11 +1,11 @@
 namespace DHT.Server.Data {
 	public readonly struct Channel {
-		public ulong Id { get; init; }
-		public ulong Server { get; init; }
-		public string Name { get; init; }
-		public ulong? ParentId { get; init; }
-		public int? Position { get; init; }
-		public string? Topic { get; init; }
-		public bool? Nsfw { get; init; }
+		public ulong Id { get; internal init; }
+		public ulong Server { get; internal init; }
+		public string Name { get; internal init; }
+		public ulong? ParentId { get; internal init; }
+		public int? Position { get; internal init; }
+		public string? Topic { get; internal init; }
+		public bool? Nsfw { get; internal init; }
 	}
 }

app/Server/Data/Embed.cs

@@ -1,5 +1,5 @@
 namespace DHT.Server.Data {
 	public readonly struct Embed {
-		public string Json { get; init; }
+		public string Json { get; internal init; }
 	}
 }

app/Server/Data/Filters/MessageFilter.cs

@@ -2,7 +2,7 @@ using System;
 using System.Collections.Generic;
 
 namespace DHT.Server.Data.Filters {
-	public class MessageFilter {
+	public sealed class MessageFilter {
 		public DateTime? StartDate { get; set; }
 		public DateTime? EndDate { get; set; }
 

app/Server/Data/Message.cs

@@ -2,15 +2,15 @@ using System.Collections.Immutable;
 
 namespace DHT.Server.Data {
 	public readonly struct Message {
-		public ulong Id { get; init; }
-		public ulong Sender { get; init; }
-		public ulong Channel { get; init; }
-		public string Text { get; init; }
-		public long Timestamp { get; init; }
-		public long? EditTimestamp { get; init; }
-		public ulong? RepliedToId { get; init; }
-		public ImmutableArray<Attachment> Attachments { get; init; }
-		public ImmutableArray<Embed> Embeds { get; init; }
-		public ImmutableArray<Reaction> Reactions { get; init; }
+		public ulong Id { get; internal init; }
+		public ulong Sender { get; internal init; }
+		public ulong Channel { get; internal init; }
+		public string Text { get; internal init; }
+		public long Timestamp { get; internal init; }
+		public long? EditTimestamp { get; internal init; }
+		public ulong? RepliedToId { get; internal init; }
+		public ImmutableArray<Attachment> Attachments { get; internal init; }
+		public ImmutableArray<Embed> Embeds { get; internal init; }
+		public ImmutableArray<Reaction> Reactions { get; internal init; }
 	}
 }

app/Server/Data/Reaction.cs

@@ -1,8 +1,8 @@
 namespace DHT.Server.Data {
 	public readonly struct Reaction {
-		public ulong? EmojiId { get; init; }
-		public string? EmojiName { get; init; }
-		public EmojiFlags EmojiFlags { get; init; }
-		public int Count { get; init; }
+		public ulong? EmojiId { get; internal init; }
+		public string? EmojiName { get; internal init; }
+		public EmojiFlags EmojiFlags { get; internal init; }
+		public int Count { get; internal init; }
 	}
 }

app/Server/Data/Server.cs

@@ -1,7 +1,7 @@
 namespace DHT.Server.Data {
 	public readonly struct Server {
-		public ulong Id { get; init; }
-		public string Name { get; init; }
-		public ServerType? Type { get; init; }
+		public ulong Id { get; internal init; }
+		public string Name { get; internal init; }
+		public ServerType? Type { get; internal init; }
 	}
 }

app/Server/Data/ServerType.cs

@@ -24,7 +24,7 @@ namespace DHT.Server.Data {
 			};
 		}
 
-		public static string ToJsonViewerString(ServerType? type) {
+		internal static string ToJsonViewerString(ServerType? type) {
 			return type switch {
 				ServerType.Server        => "server",
 				ServerType.Group         => "group",

app/Server/Data/User.cs

@@ -1,8 +1,8 @@
 namespace DHT.Server.Data {
 	public readonly struct User {
-		public ulong Id { get; init; }
-		public string Name { get; init; }
-		public string? AvatarUrl { get; init; }
-		public string? Discriminator { get; init; }
+		public ulong Id { get; internal init; }
+		public string Name { get; internal init; }
+		public string? AvatarUrl { get; internal init; }
+		public string? Discriminator { get; internal init; }
 	}
 }

app/Server/Database/DatabaseStatistics.cs

@@ -2,7 +2,7 @@ using System.ComponentModel;
 using System.Runtime.CompilerServices;
 
 namespace DHT.Server.Database {
-	public class DatabaseStatistics : INotifyPropertyChanged {
+	public sealed class DatabaseStatistics : INotifyPropertyChanged {
 		private long totalServers;
 		private long totalChannels;
 		private long totalUsers;

app/Server/Database/DummyDatabaseFile.cs

@@ -1,10 +1,9 @@
-using System;
 using System.Collections.Generic;
 using DHT.Server.Data;
 using DHT.Server.Data.Filters;
 
 namespace DHT.Server.Database {
-	public class DummyDatabaseFile : IDatabaseFile {
+	public sealed class DummyDatabaseFile : IDatabaseFile {
 		public static DummyDatabaseFile Instance { get; } = new();
 
 		public string Path => "";
@@ -42,8 +41,6 @@ namespace DHT.Server.Database {
 
 		public void RemoveMessages(MessageFilter filter, MessageFilterRemovalMode mode) {}
 
-		public void Dispose() {
-			GC.SuppressFinalize(this);
-		}
+		public void Dispose() {}
 	}
 }

app/Server/Database/Exceptions/DatabaseTooNewException.cs

@@ -2,11 +2,11 @@ using System;
 using DHT.Server.Database.Sqlite;
 
 namespace DHT.Server.Database.Exceptions {
-	public class DatabaseTooNewException : Exception {
+	public sealed class DatabaseTooNewException : Exception {
 		public int DatabaseVersion { get; }
 		public int CurrentVersion => Schema.Version;
 
-		public DatabaseTooNewException(int databaseVersion) : base("Database is too new: " + databaseVersion + " > " + Schema.Version) {
+		internal DatabaseTooNewException(int databaseVersion) : base("Database is too new: " + databaseVersion + " > " + Schema.Version) {
 			this.DatabaseVersion = databaseVersion;
 		}
 	}

app/Server/Database/Exceptions/InvalidDatabaseVersionException.cs

@@ -1,10 +1,10 @@
 using System;
 
 namespace DHT.Server.Database.Exceptions {
-	public class InvalidDatabaseVersionException : Exception {
+	public sealed class InvalidDatabaseVersionException : Exception {
 		public string Version { get; }
 
-		public InvalidDatabaseVersionException(string version) : base("Invalid database version: " + version) {
+		internal InvalidDatabaseVersionException(string version) : base("Invalid database version: " + version) {
 			this.Version = version;
 		}
 	}

app/Server/Database/Export/ViewerJsonExport.cs

@@ -124,7 +124,7 @@ namespace DHT.Server.Database.Export {
 		private static dynamic GenerateMessageList(List<Message> includedMessages, Dictionary<ulong, int> userIndices) {
 			var data = new Dictionary<string, Dictionary<string, dynamic>>();
 
-			foreach (var grouping in includedMessages.GroupBy(message => message.Channel)) {
+			foreach (var grouping in includedMessages.GroupBy(static message => message.Channel)) {
 				var channel = grouping.Key.ToString();
 				var channelData = new Dictionary<string, dynamic>();
 
@@ -146,17 +146,17 @@ namespace DHT.Server.Database.Export {
 					}
 
 					if (!message.Attachments.IsEmpty) {
-						obj.a = message.Attachments.Select(attachment => new {
+						obj.a = message.Attachments.Select(static attachment => new {
 							url = attachment.Url
 						}).ToArray();
 					}
 
 					if (!message.Embeds.IsEmpty) {
-						obj.e = message.Embeds.Select(embed => embed.Json).ToArray();
+						obj.e = message.Embeds.Select(static embed => embed.Json).ToArray();
 					}
 
 					if (!message.Reactions.IsEmpty) {
-						obj.re = message.Reactions.Select(reaction => {
+						obj.re = message.Reactions.Select(static reaction => {
 							dynamic r = new ExpandoObject();
 
 							if (reaction.EmojiId != null) {

app/Server/Database/Export/ViewerJsonSnowflakeSerializer.cs

@@ -3,7 +3,7 @@ using System.Text.Json;
 using System.Text.Json.Serialization;
 
 namespace DHT.Server.Database.Export {
-	public class ViewerJsonSnowflakeSerializer : JsonConverter<ulong> {
+	sealed class ViewerJsonSnowflakeSerializer : JsonConverter<ulong> {
 		public override ulong Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) {
 			return ulong.Parse(reader.GetString()!);
 		}

app/Server/Database/Sqlite/Schema.cs

@@ -4,7 +4,7 @@ using DHT.Server.Database.Exceptions;
 using Microsoft.Data.Sqlite;
 
 namespace DHT.Server.Database.Sqlite {
-	internal class Schema {
+	sealed class Schema {
 		internal const int Version = 2;
 
 		private readonly SqliteConnection conn;

app/Server/Database/Sqlite/SqliteDatabaseFile.cs

@@ -9,7 +9,7 @@ using DHT.Utils.Collections;
 using Microsoft.Data.Sqlite;
 
 namespace DHT.Server.Database.Sqlite {
-	public class SqliteDatabaseFile : IDatabaseFile {
+	public sealed class SqliteDatabaseFile : IDatabaseFile {
 		public static async Task<SqliteDatabaseFile?> OpenOrCreate(string path, Func<Task<bool>> checkCanUpgradeSchemas) {
 			string connectionString = new SqliteConnectionStringBuilder {
 				DataSource = path,
@@ -39,7 +39,6 @@ namespace DHT.Server.Database.Sqlite {
 
 		public void Dispose() {
 			conn.Dispose();
-			GC.SuppressFinalize(this);
 		}
 
 		public void AddServer(Data.Server server) {

app/Server/Database/Sqlite/SqliteMessageFilter.cs

@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using DHT.Server.Data.Filters;
 
 namespace DHT.Server.Database.Sqlite {
-	public static class SqliteMessageFilter {
+	static class SqliteMessageFilter {
 		public static string GenerateWhereClause(this MessageFilter? filter, bool invert = false) {
 			if (filter == null) {
 				return "";

app/Server/Database/Sqlite/SqliteUtils.cs

@@ -3,7 +3,7 @@ using System.Linq;
 using Microsoft.Data.Sqlite;
 
 namespace DHT.Server.Database.Sqlite {
-	public static class SqliteUtils {
+	static class SqliteUtils {
 		public static SqliteCommand Command(this SqliteConnection conn, string sql) {
 			var cmd = conn.CreateCommand();
 			cmd.CommandText = sql;
@@ -12,7 +12,7 @@ namespace DHT.Server.Database.Sqlite {
 
 		public static SqliteCommand Insert(this SqliteConnection conn, string tableName, string[] columns) {
 			string columnNames = string.Join(',', columns);
-			string columnParams = string.Join(',', columns.Select(c => ':' + c));
+			string columnParams = string.Join(',', columns.Select(static c => ':' + c));
 
 			return conn.Command("INSERT INTO " + tableName + " (" + columnNames + ")" +
 			                    "VALUES (" + columnParams + ")");
@@ -20,8 +20,8 @@ namespace DHT.Server.Database.Sqlite {
 
 		public static SqliteCommand Upsert(this SqliteConnection conn, string tableName, string[] columns) {
 			string columnNames = string.Join(',', columns);
-			string columnParams = string.Join(',', columns.Select(c => ':' + c));
-			string columnUpdates = string.Join(',', columns.Skip(1).Select(c => c + " = excluded." + c));
+			string columnParams = string.Join(',', columns.Select(static c => ':' + c));
+			string columnUpdates = string.Join(',', columns.Skip(1).Select(static c => c + " = excluded." + c));
 
 			return conn.Command("INSERT INTO " + tableName + " (" + columnNames + ")" +
 			                    "VALUES (" + columnParams + ")" +

app/Server/Endpoints/BaseEndpoint.cs

@@ -4,12 +4,13 @@ using System.Text.Json;
 using System.Threading.Tasks;
 using DHT.Server.Database;
 using DHT.Server.Service;
+using DHT.Utils.Http;
 using DHT.Utils.Logging;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.Extensions;
 
 namespace DHT.Server.Endpoints {
-	public abstract class BaseEndpoint {
+	abstract class BaseEndpoint {
 		private static readonly Log Log = Log.ForType<BaseEndpoint>();
 
 		protected IDatabaseFile Db { get; }

app/Server/Endpoints/TrackChannelEndpoint.cs

@@ -3,12 +3,12 @@ using System.Text.Json;
 using System.Threading.Tasks;
 using DHT.Server.Data;
 using DHT.Server.Database;
-using DHT.Server.Json;
 using DHT.Server.Service;
+using DHT.Utils.Http;
 using Microsoft.AspNetCore.Http;
 
 namespace DHT.Server.Endpoints {
-	public class TrackChannelEndpoint : BaseEndpoint {
+	sealed class TrackChannelEndpoint : BaseEndpoint {
 		public TrackChannelEndpoint(IDatabaseFile db, ServerParameters parameters) : base(db, parameters) {}
 
 		protected override async Task<(HttpStatusCode, object?)> Respond(HttpContext ctx) {

app/Server/Endpoints/TrackMessagesEndpoint.cs

@@ -7,12 +7,12 @@ using System.Threading.Tasks;
 using DHT.Server.Data;
 using DHT.Server.Data.Filters;
 using DHT.Server.Database;
-using DHT.Server.Json;
 using DHT.Server.Service;
+using DHT.Utils.Http;
 using Microsoft.AspNetCore.Http;
 
 namespace DHT.Server.Endpoints {
-	public class TrackMessagesEndpoint : BaseEndpoint {
+	sealed class TrackMessagesEndpoint : BaseEndpoint {
 		public TrackMessagesEndpoint(IDatabaseFile db, ServerParameters parameters) : base(db, parameters) {}
 
 		protected override async Task<(HttpStatusCode, object?)> Respond(HttpContext ctx) {

app/Server/Endpoints/TrackUsersEndpoint.cs

@@ -3,12 +3,12 @@ using System.Text.Json;
 using System.Threading.Tasks;
 using DHT.Server.Data;
 using DHT.Server.Database;
-using DHT.Server.Json;
 using DHT.Server.Service;
+using DHT.Utils.Http;
 using Microsoft.AspNetCore.Http;
 
 namespace DHT.Server.Endpoints {
-	public class TrackUsersEndpoint : BaseEndpoint {
+	sealed class TrackUsersEndpoint : BaseEndpoint {
 		public TrackUsersEndpoint(IDatabaseFile db, ServerParameters parameters) : base(db, parameters) {}
 
 		protected override async Task<(HttpStatusCode, object?)> Respond(HttpContext ctx) {

app/Server/Service/ServerLauncher.cs

@@ -72,7 +72,7 @@ namespace DHT.Server.Service {
 			void SetKestrelOptions(KestrelServerOptions options) {
 				options.Limits.MaxRequestBodySize = null;
 				options.Limits.MinResponseDataRate = null;
-				options.ListenLocalhost(port, listenOptions => listenOptions.Protocols = HttpProtocols.Http1);
+				options.ListenLocalhost(port, static listenOptions => listenOptions.Protocols = HttpProtocols.Http1);
 			}
 
 			Server = WebHost.CreateDefaultBuilder()

app/Server/Service/ServerParameters.cs

@@ -1,5 +1,5 @@
 namespace DHT.Server.Service {
-	public struct ServerParameters {
+	readonly struct ServerParameters {
 		public string Token { get; init; }
 	}
 }

app/Server/Service/ServerStartup.cs

@@ -8,14 +8,14 @@ using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 
 namespace DHT.Server.Service {
-	public class Startup {
+	sealed class Startup {
 		public void ConfigureServices(IServiceCollection services) {
-			services.Configure<JsonOptions>(options => {
+			services.Configure<JsonOptions>(static options => {
 				options.SerializerOptions.NumberHandling = JsonNumberHandling.Strict;
 			});
 
-			services.AddCors(cors => {
-				cors.AddDefaultPolicy(builder => {
+			services.AddCors(static cors => {
+				cors.AddDefaultPolicy(static builder => {
 					builder.WithOrigins("https://discord.com", "https://discordapp.com").AllowCredentials().AllowAnyMethod().AllowAnyHeader();
 				});
 			});

app/Server/Service/ServerUtils.cs

@@ -10,8 +10,8 @@ namespace DHT.Server.Service {
 		public static int FindAvailablePort(int min, int max) {
 			var properties = IPGlobalProperties.GetIPGlobalProperties();
 			var occupied = new HashSet<int>();
-			occupied.UnionWith(properties.GetActiveTcpListeners().Select(tcp => tcp.Port));
-			occupied.UnionWith(properties.GetActiveTcpConnections().Select(tcp => tcp.LocalEndPoint.Port));
+			occupied.UnionWith(properties.GetActiveTcpListeners().Select(static tcp => tcp.Port));
+			occupied.UnionWith(properties.GetActiveTcpConnections().Select(static tcp => tcp.LocalEndPoint.Port));
 
 			for (int port = min; port < max; port++) {
 				if (!occupied.Contains(port)) {

app/Utils/Collections/MultiDictionary.cs

@@ -1,7 +1,7 @@
 using System.Collections.Generic;
 
 namespace DHT.Utils.Collections {
-	public class MultiDictionary<TKey, TValue> where TKey : notnull {
+	public sealed class MultiDictionary<TKey, TValue> where TKey : notnull {
 		private readonly Dictionary<TKey, List<TValue>> dict = new();
 
 		public void Add(TKey key, TValue value) {

app/Utils/Http/HttpException.cs

@@ -1,8 +1,8 @@
 using System;
 using System.Net;
 
-namespace DHT.Server.Service {
-	public class HttpException : Exception {
+namespace DHT.Utils.Http {
+	public sealed class HttpException : Exception {
 		public HttpStatusCode StatusCode { get; }
 
 		public HttpException(HttpStatusCode statusCode, string message) : base(message) {

app/Utils/Http/JsonExtensions.cs

@@ -1,8 +1,7 @@
 using System.Net;
 using System.Text.Json;
-using DHT.Server.Service;
 
-namespace DHT.Server.Json {
+namespace DHT.Utils.Http {
 	public static class JsonExtensions {
 		public static bool HasKey(this JsonElement json, string key) {
 			return json.TryGetProperty(key, out _);