Release 1.18

* Switch to .NET Framework 4.7.2 & C# 8.0, update libraries

* Add TweetLib.Core project targeting .NET Standard 2.0

* Enable reference nullability checks for TweetLib.Core

* Move a bunch of utility classes into TweetLib.Core & refactor

* Partially move TweetDuck plugin & update system to TweetLib.Core

* Move some constants and CultureInfo setup to TweetLib.Core

* Move some configuration classes to TweetLib.Core

* Minor refactoring and warning suppression

* Add App to TweetLib.Core

* Add IAppErrorHandler w/ implementation

* Continue moving config, plugin, and update classes to TweetLib.Core

* Fix a few nullability checks

* Update installers to check for .NET Framework 4.7.2

.github/FUNDING.yml

@@ -0,0 +1,4 @@
+# These are supported funding model platforms
+
+patreon: chylex
+ko_fi: chylex

Configuration/Arguments.cs

@@ -1,5 +1,5 @@
 using System;
-using TweetDuck.Data;
+using TweetLib.Core.Collections;
 
 namespace TweetDuck.Configuration{
     static class Arguments{
@@ -22,8 +22,8 @@ namespace TweetDuck.Configuration{
             return Current.HasFlag(flag);
         }
 
-        public static string GetValue(string key, string defaultValue){
+        public static string GetValue(string key){
-            return Current.GetValue(key, defaultValue);
+            return Current.GetValue(key);
         }
 
         public static CommandLineArgs GetCurrentClean(){

Configuration/ConfigManager.cs

@@ -1,13 +1,13 @@
 using System;
-using System.Collections.Generic;
 using System.Drawing;
-using TweetDuck.Configuration.Instance;
-using TweetDuck.Core.Utils;
 using TweetDuck.Data;
-using TweetDuck.Data.Serialization;
+using TweetLib.Core.Features.Configuration;
+using TweetLib.Core.Features.Plugins.Config;
+using TweetLib.Core.Serialization.Converters;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Configuration{
-    sealed class ConfigManager{
+    sealed class ConfigManager : IConfigManager{
         public UserConfig User { get; }
         public SystemConfig System { get; }
         public PluginConfig Plugins { get; }
@@ -16,7 +16,7 @@ namespace TweetDuck.Configuration{
 
         private readonly FileConfigInstance<UserConfig> infoUser;
         private readonly FileConfigInstance<SystemConfig> infoSystem;
-        private readonly PluginConfigInstance infoPlugins;
+        private readonly PluginConfigInstance<PluginConfig> infoPlugins;
 
         private readonly IConfigInstance<BaseConfig>[] infoList;
 
@@ -28,7 +28,7 @@ namespace TweetDuck.Configuration{
             infoList = new IConfigInstance<BaseConfig>[]{
                 infoUser = new FileConfigInstance<UserConfig>(Program.UserConfigFilePath, User, "program options"),
                 infoSystem = new FileConfigInstance<SystemConfig>(Program.SystemConfigFilePath, System, "system options"),
-                infoPlugins = new PluginConfigInstance(Program.PluginConfigFilePath, Plugins)
+                infoPlugins = new PluginConfigInstance<PluginConfig>(Program.PluginConfigFilePath, Plugins)
             };
 
             // TODO refactor further
@@ -70,59 +70,13 @@ namespace TweetDuck.Configuration{
             infoPlugins.Reload();
         }
 
-        private void TriggerProgramRestartRequested(){
+        void IConfigManager.TriggerProgramRestartRequested(){
             ProgramRestartRequested?.Invoke(this, EventArgs.Empty);
         }
 
-        private IConfigInstance<BaseConfig> GetInstanceInfo(BaseConfig instance){
+        IConfigInstance<BaseConfig> IConfigManager.GetInstanceInfo(BaseConfig instance){
             Type instanceType = instance.GetType();
             return Array.Find(infoList, info => info.Instance.GetType() == instanceType); // TODO handle null
         }
-
-        public abstract class BaseConfig{
-            private readonly ConfigManager configManager;
-
-            protected BaseConfig(ConfigManager configManager){
-                this.configManager = configManager;
-            }
-
-            // Management
-
-            public void Save(){
-                configManager.GetInstanceInfo(this).Save();
-            }
-
-            public void Reload(){
-                configManager.GetInstanceInfo(this).Reload();
-            }
-
-            public void Reset(){
-                configManager.GetInstanceInfo(this).Reset();
-            }
-
-            // Construction methods
-
-            public T ConstructWithDefaults<T>() where T : BaseConfig{
-                return ConstructWithDefaults(configManager) as T;
-            }
-
-            protected abstract BaseConfig ConstructWithDefaults(ConfigManager configManager);
-
-            // Utility methods
-
-            protected void UpdatePropertyWithEvent<T>(ref T field, T value, EventHandler eventHandler){
-                if (!EqualityComparer<T>.Default.Equals(field, value)){
-                    field = value;
-                    eventHandler?.Invoke(this, EventArgs.Empty);
-                }
-            }
-
-            protected void UpdatePropertyWithRestartRequest<T>(ref T field, T value){
-                if (!EqualityComparer<T>.Default.Equals(field, value)){
-                    field = value;
-                    configManager.TriggerProgramRestartRequested();
-                }
-            }
-        }
     }
 }

Configuration/Instance/PluginConfigInstance.cs

@@ -1,69 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-
-namespace TweetDuck.Configuration.Instance{
-    class PluginConfigInstance : IConfigInstance<PluginConfig>{
-        public PluginConfig Instance { get; }
-
-        private readonly string filename;
-
-        public PluginConfigInstance(string filename, PluginConfig instance){
-            this.filename = filename;
-            this.Instance = instance;
-        }
-
-        public void Load(){
-            try{
-                using(StreamReader reader = new StreamReader(new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read), Encoding.UTF8)){
-                    string line = reader.ReadLine();
-
-                    if (line == "#Disabled"){
-                        HashSet<string> newDisabled = new HashSet<string>();
-
-                        while((line = reader.ReadLine()) != null){
-                            newDisabled.Add(line);
-                        }
-
-                        Instance.ReloadSilently(newDisabled);
-                    }
-                }
-            }catch(FileNotFoundException){
-            }catch(DirectoryNotFoundException){
-            }catch(Exception e){
-                Program.Reporter.HandleException("Plugin Configuration Error", "Could not read the plugin configuration file. If you continue, the list of disabled plugins will be reset to default.", true, e);
-            }
-        }
-
-        public void Save(){
-            try{
-                using(StreamWriter writer = new StreamWriter(new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.None), Encoding.UTF8)){
-                    writer.WriteLine("#Disabled");
-
-                    foreach(string identifier in Instance.DisabledPlugins){
-                        writer.WriteLine(identifier);
-                    }
-                }
-            }catch(Exception e){
-                Program.Reporter.HandleException("Plugin Configuration Error", "Could not save the plugin configuration file.", true, e);
-            }
-        }
-
-        public void Reload(){
-            Load();
-        }
-
-        public void Reset(){
-            try{
-                File.Delete(filename);
-                Instance.ReloadSilently(Instance.ConstructWithDefaults<PluginConfig>().DisabledPlugins);
-            }catch(Exception e){
-                Program.Reporter.HandleException("Plugin Configuration Error", "Could not delete the plugin configuration file.", true, e);
-                return;
-            }
-            
-            Reload();
-        }
-    }
-}

Configuration/PluginConfig.cs

@@ -1,20 +1,41 @@
 using System;
 using System.Collections.Generic;
-using TweetDuck.Plugins;
+using TweetLib.Core.Features.Configuration;
-using TweetDuck.Plugins.Events;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Config;
+using TweetLib.Core.Features.Plugins.Events;
 
 namespace TweetDuck.Configuration{
-    sealed class PluginConfig : ConfigManager.BaseConfig, IPluginConfig{
+    sealed class PluginConfig : BaseConfig, IPluginConfig{
         private static readonly string[] DefaultDisabled = {
             "official/clear-columns",
             "official/reply-account"
         };
 
-        // CONFIGURATION
+        // CONFIGURATION DATA
 
-        public IEnumerable<string> DisabledPlugins => disabled;
+        private readonly HashSet<string> disabled = new HashSet<string>(DefaultDisabled);
+
+        // EVENTS
         
         public event EventHandler<PluginChangedStateEventArgs> PluginChangedState;
+        
+        // END OF CONFIG
+
+        public PluginConfig(IConfigManager configManager) : base(configManager){}
+
+        protected override BaseConfig ConstructWithDefaults(IConfigManager configManager){
+            return new PluginConfig(configManager);
+        }
+
+        // INTERFACE IMPLEMENTATION
+
+        IEnumerable<string> IPluginConfig.DisabledPlugins => disabled;
+
+        void IPluginConfig.Reset(IEnumerable<string> newDisabledPlugins){
+            disabled.Clear();
+            disabled.UnionWith(newDisabledPlugins);
+        }
 
         public void SetEnabled(Plugin plugin, bool enabled){
             if ((enabled && disabled.Remove(plugin.Identifier)) || (!enabled && disabled.Add(plugin.Identifier))){
@@ -26,20 +47,5 @@ namespace TweetDuck.Configuration{
         public bool IsEnabled(Plugin plugin){
             return !disabled.Contains(plugin.Identifier);
         }
-
-        public void ReloadSilently(IEnumerable<string> newDisabled){
-            disabled.Clear();
-            disabled.UnionWith(newDisabled);
-        }
-
-        private readonly HashSet<string> disabled = new HashSet<string>(DefaultDisabled);
-        
-        // END OF CONFIG
-
-        public PluginConfig(ConfigManager configManager) : base(configManager){}
-
-        protected override ConfigManager.BaseConfig ConstructWithDefaults(ConfigManager configManager){
-            return new PluginConfig(configManager);
-        }
     }
 }

Configuration/SystemConfig.cs

@@ -1,5 +1,7 @@
-namespace TweetDuck.Configuration{
+using TweetLib.Core.Features.Configuration;
-    sealed class SystemConfig : ConfigManager.BaseConfig{
+
+namespace TweetDuck.Configuration{
+    sealed class SystemConfig : BaseConfig{
 
         // CONFIGURATION DATA
         
@@ -17,9 +19,9 @@
         
         // END OF CONFIG
 
-        public SystemConfig(ConfigManager configManager) : base(configManager){}
+        public SystemConfig(IConfigManager configManager) : base(configManager){}
 
-        protected override ConfigManager.BaseConfig ConstructWithDefaults(ConfigManager configManager){
+        protected override BaseConfig ConstructWithDefaults(IConfigManager configManager){
             return new SystemConfig(configManager);
         }
     }

Configuration/UserConfig.cs

@@ -5,9 +5,10 @@ using TweetDuck.Core.Notification;
 using TweetDuck.Core.Other;
 using TweetDuck.Core.Utils;
 using TweetDuck.Data;
+using TweetLib.Core.Features.Configuration;
 
 namespace TweetDuck.Configuration{
-    sealed class UserConfig : ConfigManager.BaseConfig{
+    sealed class UserConfig : BaseConfig{
         
         // CONFIGURATION DATA
 
@@ -135,9 +136,9 @@ namespace TweetDuck.Configuration{
 
         // END OF CONFIG
         
-        public UserConfig(ConfigManager configManager) : base(configManager){}
+        public UserConfig(IConfigManager configManager) : base(configManager){}
 
-        protected override ConfigManager.BaseConfig ConstructWithDefaults(ConfigManager configManager){
+        protected override BaseConfig ConstructWithDefaults(IConfigManager configManager){
             return new UserConfig(configManager);
         }
     }

Core/Bridge/TweetDeckBridge.cs

@@ -1,4 +1,5 @@
-using System.Windows.Forms;
+using System.Diagnostics.CodeAnalysis;
+using System.Windows.Forms;
 using TweetDuck.Core.Controls;
 using TweetDuck.Core.Management;
 using TweetDuck.Core.Notification;
@@ -6,6 +7,7 @@ using TweetDuck.Core.Other;
 using TweetDuck.Core.Utils;
 
 namespace TweetDuck.Core.Bridge{
+    [SuppressMessage("ReSharper", "UnusedMember.Global")]
     class TweetDeckBridge{
         public static string FontSize { get; private set; }
         public static string NotificationHeadLayout { get; private set; }
@@ -63,7 +65,7 @@ namespace TweetDuck.Core.Bridge{
         }
 
         // Notification only
-
+        
         public sealed class Notification : TweetDeckBridge{
             public Notification(FormBrowser form, FormNotificationMain notification) : base(form, notification){}
 

Core/Bridge/UpdateBridge.cs

@@ -1,9 +1,11 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Windows.Forms;
 using TweetDuck.Core.Controls;
-using TweetDuck.Updates;
+using TweetLib.Core.Features.Updates;
 
 namespace TweetDuck.Core.Bridge{
+    [SuppressMessage("ReSharper", "UnusedMember.Global")]
     class UpdateBridge{
         private readonly UpdateHandler updates;
         private readonly Control sync;

Core/FormBrowser.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Drawing;
+using System.Threading.Tasks;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
 using TweetDuck.Core.Bridge;
@@ -14,9 +15,10 @@ using TweetDuck.Core.Other.Analytics;
 using TweetDuck.Core.Other.Settings.Dialogs;
 using TweetDuck.Core.Utils;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Events;
 using TweetDuck.Resources;
 using TweetDuck.Updates;
+using TweetLib.Core.Features.Plugins.Events;
+using TweetLib.Core.Features.Updates;
 
 namespace TweetDuck.Core{
     sealed partial class FormBrowser : Form, AnalyticsFile.IProvider{
@@ -71,7 +73,7 @@ namespace TweetDuck.Core{
             this.notification = new FormNotificationTweet(this, plugins);
             this.notification.Show();
             
-            this.updates = new UpdateHandler(Program.InstallerPath);
+            this.updates = new UpdateHandler(new UpdateCheckClient(Program.InstallerPath), TaskScheduler.FromCurrentSynchronizationContext());
             this.updates.CheckFinished += updates_CheckFinished;
 
             this.updateBridge = new UpdateBridge(updates, this);

Core/FormManager.cs

@@ -17,8 +17,6 @@ namespace TweetDuck.Core{
             else return false;
         }
 
-        public static bool HasAnyDialogs => Application.OpenForms.OfType<IAppDialog>().Any();
-        
         public static void CloseAllDialogs(){
             foreach(IAppDialog dialog in Application.OpenForms.OfType<IAppDialog>().Reverse()){
                 ((Form)dialog).Close();

Core/Handling/ContextMenuBase.cs

@@ -12,6 +12,7 @@ using TweetDuck.Core.Notification;
 using TweetDuck.Core.Other;
 using TweetDuck.Core.Other.Analytics;
 using TweetDuck.Resources;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Core.Handling{
     abstract class ContextMenuBase : IContextMenuHandler{

Core/Management/ContextInfo.cs

@@ -1,6 +1,6 @@
 using System;
 using CefSharp;
-using TweetDuck.Core.Utils;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Core.Management{
     sealed class ContextInfo{
@@ -107,7 +107,7 @@ namespace TweetDuck.Core.Management{
                 private string unsafeLinkUrl = string.Empty;
                 private string mediaUrl = string.Empty;
 
-                private ChirpInfo chirp = default(ChirpInfo);
+                private ChirpInfo chirp = default;
 
                 public void AddContext(IContextMenuParams parameters){
                     ContextMenuType flags = parameters.TypeFlags;

Core/Management/ProfileManager.cs

@@ -3,9 +3,10 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using TweetDuck.Core.Other;
-using TweetDuck.Data;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Enums;
+using TweetLib.Core.Data;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Enums;
 
 namespace TweetDuck.Core.Management{
     sealed class ProfileManager{

Core/Notification/FormNotificationMain.cs

@@ -6,10 +6,10 @@ using TweetDuck.Core.Bridge;
 using TweetDuck.Core.Controls;
 using TweetDuck.Core.Handling;
 using TweetDuck.Core.Utils;
-using TweetDuck.Data;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Enums;
 using TweetDuck.Resources;
+using TweetLib.Core.Data;
+using TweetLib.Core.Features.Plugins.Enums;
 
 namespace TweetDuck.Core.Notification{
     abstract partial class FormNotificationMain : FormNotificationBase{

Core/Notification/Screenshot/FormNotificationScreenshotable.cs

@@ -6,9 +6,9 @@ using CefSharp;
 using TweetDuck.Core.Controls;
 using TweetDuck.Core.Other;
 using TweetDuck.Core.Utils;
-using TweetDuck.Data;
 using TweetDuck.Plugins;
 using TweetDuck.Resources;
+using TweetLib.Core.Data;
 
 namespace TweetDuck.Core.Notification.Screenshot{
     sealed class FormNotificationScreenshotable : FormNotificationBase{

Core/Notification/Screenshot/ScreenshotBridge.cs

@@ -1,8 +1,10 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Windows.Forms;
 using TweetDuck.Core.Controls;
 
 namespace TweetDuck.Core.Notification.Screenshot{
+    [SuppressMessage("ReSharper", "UnusedMember.Global")]
     sealed class ScreenshotBridge{
         private readonly Control owner;
 

Core/Other/Analytics/AnalyticsFile.cs

@@ -2,7 +2,8 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
-using TweetDuck.Data.Serialization;
+using TweetLib.Core.Serialization;
+using TweetLib.Core.Serialization.Converters;
 
 namespace TweetDuck.Core.Other.Analytics{
     [SuppressMessage("ReSharper", "AutoPropertyCanBeMadeGetOnly.Local")]

Core/Other/Analytics/AnalyticsManager.cs

@@ -9,6 +9,8 @@ using System.Timers;
 using TweetDuck.Core.Controls;
 using TweetDuck.Core.Utils;
 using TweetDuck.Plugins;
+using TweetLib.Core;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Core.Other.Analytics{
     sealed class AnalyticsManager : IDisposable{
@@ -20,7 +22,7 @@ namespace TweetDuck.Core.Other.Analytics{
             #else
             "https://tweetduck.chylex.com/breadcrumb/report"
             #endif
-            );
+        );
         
         public AnalyticsFile File { get; }
 
@@ -80,7 +82,7 @@ namespace TweetDuck.Core.Other.Analytics{
         private void SetLastDataCollectionTime(DateTime dt, string message = null){
             File.LastDataCollection = new DateTime(dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, 0, dt.Kind);
             File.LastCollectionVersion = Program.VersionTag;
-            File.LastCollectionMessage = message ?? dt.ToString("g", Program.Culture);
+            File.LastCollectionMessage = message ?? dt.ToString("g", Lib.Culture);
 
             File.Save();
             RestartTimer();
@@ -117,7 +119,7 @@ namespace TweetDuck.Core.Other.Analytics{
                 System.Diagnostics.Debugger.Break();
                 #endif
 
-                BrowserUtils.CreateWebClient().UploadValues(CollectionUrl, "POST", report.ToNameValueCollection());
+                WebUtils.NewClient(BrowserUtils.UserAgentVanilla).UploadValues(CollectionUrl, "POST", report.ToNameValueCollection());
             }).ContinueWith(task => browser.InvokeAsyncSafe(() => {
                 if (task.Status == TaskStatus.RanToCompletion){
                     SetLastDataCollectionTime(DateTime.Now);

Core/Other/Analytics/AnalyticsReportGenerator.cs

@@ -11,7 +11,10 @@ using System.Text.RegularExpressions;
 using TweetDuck.Core.Notification;
 using TweetDuck.Core.Utils;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Enums;
+using TweetLib.Core;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Enums;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Core.Other.Analytics{
     static class AnalyticsReportGenerator{
@@ -27,7 +30,7 @@ namespace TweetDuck.Core.Other.Analytics{
                 { "System Edition"     , SystemEdition },
                 { "System Environment" , Environment.Is64BitOperatingSystem ? "64-bit" : "32-bit" },
                 { "System Build"       , SystemBuild },
-                { "System Locale"      , Program.Culture.Name.ToLower() },
+                { "System Locale"      , Lib.Culture.Name.ToLower() },
                 0,
                 { "RAM" , Exact(RamSize) },
                 { "GPU" , GpuVendor },

Core/Other/FormPlugins.cs

@@ -6,6 +6,7 @@ using System.Windows.Forms;
 using TweetDuck.Configuration;
 using TweetDuck.Plugins;
 using TweetDuck.Plugins.Controls;
+using TweetLib.Core.Features.Plugins;
 
 namespace TweetDuck.Core.Other{
     sealed partial class FormPlugins : Form, FormManager.IAppDialog{

Core/Other/FormSettings.cs

@@ -10,7 +10,7 @@ using TweetDuck.Core.Other.Settings;
 using TweetDuck.Core.Other.Settings.Dialogs;
 using TweetDuck.Core.Utils;
 using TweetDuck.Plugins;
-using TweetDuck.Updates;
+using TweetLib.Core.Features.Updates;
 
 namespace TweetDuck.Core.Other{
     sealed partial class FormSettings : Form, FormManager.IAppDialog{
@@ -195,7 +195,7 @@ namespace TweetDuck.Core.Other{
         private sealed class SettingsTab{
             public Button Button { get; }
 
-            public BaseTabSettings Control => control ?? (control = constructor());
+            public BaseTabSettings Control => control ??= constructor();
             public bool IsInitialized => control != null;
 
             private readonly Func<BaseTabSettings> constructor;

Core/Other/Settings/Dialogs/DialogSettingsAnalytics.cs

@@ -5,8 +5,6 @@ using TweetDuck.Core.Other.Analytics;
 
 namespace TweetDuck.Core.Other.Settings.Dialogs{
     sealed partial class DialogSettingsAnalytics : Form{
-        public string CefArgs => textBoxReport.Text;
-
         public DialogSettingsAnalytics(AnalyticsReport report){
             InitializeComponent();
             

Core/Other/Settings/Dialogs/DialogSettingsCefArgs.cs

@@ -2,7 +2,7 @@
 using System.Windows.Forms;
 using TweetDuck.Core.Controls;
 using TweetDuck.Core.Utils;
-using TweetDuck.Data;
+using TweetLib.Core.Collections;
 
 namespace TweetDuck.Core.Other.Settings.Dialogs{
     sealed partial class DialogSettingsCefArgs : Form{

Core/Other/Settings/Dialogs/DialogSettingsManage.cs

@@ -4,8 +4,8 @@ using System.IO;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
 using TweetDuck.Core.Management;
-using TweetDuck.Core.Utils;
 using TweetDuck.Plugins;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Core.Other.Settings.Dialogs{
     sealed partial class DialogSettingsManage : Form{

Core/Other/Settings/Dialogs/DialogSettingsRestart.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
-using TweetDuck.Data;
+using TweetLib.Core.Collections;
 
 namespace TweetDuck.Core.Other.Settings.Dialogs{
     sealed partial class DialogSettingsRestart : Form{
@@ -18,7 +18,7 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
                 tbDataFolder.Enabled = false;
             }
             else{
-                tbDataFolder.Text = currentArgs.GetValue(Arguments.ArgDataFolder, string.Empty);
+                tbDataFolder.Text = currentArgs.GetValue(Arguments.ArgDataFolder) ?? string.Empty;
                 tbDataFolder.TextChanged += control_Change;
             }
 

Core/Other/Settings/TabSettingsGeneral.cs

@@ -6,7 +6,8 @@ using TweetDuck.Core.Controls;
 using TweetDuck.Core.Handling.General;
 using TweetDuck.Core.Other.Settings.Dialogs;
 using TweetDuck.Core.Utils;
-using TweetDuck.Updates;
+using TweetLib.Core.Features.Updates;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Core.Other.Settings{
     sealed partial class TabSettingsGeneral : BaseTabSettings{

Core/TweetDeckBrowser.cs

@@ -12,8 +12,8 @@ using TweetDuck.Core.Handling.General;
 using TweetDuck.Core.Notification;
 using TweetDuck.Core.Utils;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Enums;
 using TweetDuck.Resources;
+using TweetLib.Core.Features.Plugins.Enums;
 
 namespace TweetDuck.Core{
     sealed class TweetDeckBrowser : IDisposable{

Core/Utils/BrowserUtils.cs

@@ -3,16 +3,16 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
-using System.Net;
 using System.Windows.Forms;
 using CefSharp.WinForms;
 using TweetDuck.Configuration;
 using TweetDuck.Core.Other;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Core.Utils{
     static class BrowserUtils{
-        public static string UserAgentVanilla => Program.BrandName+" "+Application.ProductVersion;
+        public static string UserAgentVanilla => Program.BrandName + " " + Application.ProductVersion;
-        public static string UserAgentChrome => "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/"+Cef.ChromiumVersion+" Safari/537.36";
+        public static string UserAgentChrome => "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/" + Cef.ChromiumVersion + " Safari/537.36";
 
         public static readonly bool HasDevTools = File.Exists(Path.Combine(Program.ProgramPath, "devtools_resources.pak"));
 
@@ -74,29 +74,11 @@ namespace TweetDuck.Core.Utils{
             };
         }
 
-        private const string TwitterTrackingUrl = "t.co";
-
-        public enum UrlCheckResult{
-            Invalid, Tracking, Fine
-        }
-
-        public static UrlCheckResult CheckUrl(string url){
-            if (Uri.TryCreate(url, UriKind.Absolute, out Uri uri)){
-                string scheme = uri.Scheme;
-
-                if (scheme == Uri.UriSchemeHttps || scheme == Uri.UriSchemeHttp || scheme == Uri.UriSchemeFtp || scheme == Uri.UriSchemeMailto){
-                    return uri.Host == TwitterTrackingUrl ? UrlCheckResult.Tracking : UrlCheckResult.Fine;
-                }
-            }
-
-            return UrlCheckResult.Invalid;
-        }
-
         public static void OpenExternalBrowser(string url){
             if (string.IsNullOrWhiteSpace(url))return;
 
-            switch(CheckUrl(url)){
+            switch(UrlUtils.Check(url)){
-                case UrlCheckResult.Fine:
+                case UrlUtils.CheckResult.Fine:
                     if (FormGuide.CheckGuideUrl(url, out string hash)){
                         FormGuide.Show(hash);
                     }
@@ -117,9 +99,9 @@ namespace TweetDuck.Core.Utils{
 
                     break;
 
-                case UrlCheckResult.Tracking:
+                case UrlUtils.CheckResult.Tracking:
                     if (Config.IgnoreTrackingUrlWarning){
-                        goto case UrlCheckResult.Fine;
+                        goto case UrlUtils.CheckResult.Fine;
                     }
 
                     using(FormMessage form = new FormMessage("Blocked URL", "TweetDuck has blocked a tracking url due to privacy concerns. Do you want to visit it anyway?\n"+url, MessageBoxIcon.Warning)){
@@ -135,13 +117,13 @@ namespace TweetDuck.Core.Utils{
                         }
 
                         if (result == DialogResult.Ignore || result == DialogResult.Yes){
-                            goto case UrlCheckResult.Fine;
+                            goto case UrlUtils.CheckResult.Fine;
                         }
                     }
 
                     break;
 
-                case UrlCheckResult.Invalid:
+                case UrlUtils.CheckResult.Invalid:
                     FormMessage.Warning("Blocked URL", "A potentially malicious URL was blocked from opening:\n"+url, FormMessage.OK);
                     break;
             }
@@ -174,50 +156,10 @@ namespace TweetDuck.Core.Utils{
             }
         }
 
-        public static string GetFileNameFromUrl(string url){
-            string file = Path.GetFileName(new Uri(url).AbsolutePath);
-            return string.IsNullOrEmpty(file) ? null : file;
-        }
-
         public static string GetErrorName(CefErrorCode code){
             return StringUtils.ConvertPascalCaseToScreamingSnakeCase(Enum.GetName(typeof(CefErrorCode), code) ?? string.Empty);
         }
 
-        public static WebClient CreateWebClient(){
-            WindowsUtils.EnsureTLS12();
-
-            WebClient client = new WebClient{ Proxy = null };
-            client.Headers[HttpRequestHeader.UserAgent] = UserAgentVanilla;
-            return client;
-        }
-
-        public static WebClient DownloadFileAsync(string url, string target, string cookie, Action onSuccess, Action<Exception> onFailure){
-            WebClient client = CreateWebClient();
-
-            if (cookie != null){
-                client.Headers[HttpRequestHeader.Cookie] = cookie;
-            }
-
-            client.DownloadFileCompleted += (sender, args) => {
-                if (args.Cancelled){
-                    try{
-                        File.Delete(target);
-                    }catch{
-                        // didn't want it deleted anyways
-                    }
-                }
-                else if (args.Error != null){
-                    onFailure?.Invoke(args.Error);
-                }
-                else{
-                    onSuccess?.Invoke();
-                }
-            };
-
-            client.DownloadFileAsync(new Uri(url), target);
-            return client;
-        }
-
         public static int Scale(int baseValue, double scaleFactor){
             return (int)Math.Round(baseValue*scaleFactor);
         }

Core/Utils/TwitterUtils.cs

@@ -8,7 +8,9 @@ using TweetDuck.Core.Management;
 using TweetDuck.Core.Other;
 using TweetDuck.Data;
 using System.Linq;
+using System.Net;
 using System.Threading.Tasks;
+using TweetLib.Core.Utils;
 using Cookie = CefSharp.Cookie;
 
 namespace TweetDuck.Core.Utils{
@@ -71,7 +73,7 @@ namespace TweetDuck.Core.Utils{
         }
 
         public static string GetImageFileName(string url){
-            return BrowserUtils.GetFileNameFromUrl(ExtractMediaBaseLink(url));
+            return UrlUtils.GetFileNameFromUrl(ExtractMediaBaseLink(url));
         }
 
         public static void ViewImage(string url, ImageQuality quality){
@@ -88,7 +90,7 @@ namespace TweetDuck.Core.Utils{
 
             string file = Path.Combine(BrowserCache.CacheFolder, GetImageFileName(url) ?? Path.GetRandomFileName());
             
-            if (WindowsUtils.FileExistsAndNotEmpty(file)){
+            if (FileUtils.FileExistsAndNotEmpty(file)){
                 ViewImageInternal(file);
             }
             else{
@@ -143,7 +145,7 @@ namespace TweetDuck.Core.Utils{
         }
 
         public static void DownloadVideo(string url, string username){
-            string filename = BrowserUtils.GetFileNameFromUrl(url);
+            string filename = UrlUtils.GetFileNameFromUrl(url);
             string ext = Path.GetExtension(filename);
 
             using(SaveFileDialog dialog = new SaveFileDialog{
@@ -178,7 +180,10 @@ namespace TweetDuck.Core.Utils{
                         }
                     }
 
-                    BrowserUtils.DownloadFileAsync(url, target, cookieStr, onSuccess, onFailure);
+                    WebClient client = WebUtils.NewClient(BrowserUtils.UserAgentChrome);
+                    client.Headers[HttpRequestHeader.Cookie] = cookieStr;
+                    client.DownloadFileCompleted += WebUtils.FileDownloadCallback(target, onSuccess, onFailure);
+                    client.DownloadFileAsync(new Uri(url), target);
                 }, scheduler);
             }
         }

Core/Utils/WindowsUtils.cs

@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics;
 using System.IO;
-using System.Net;
 using System.Runtime.InteropServices;
 using System.Text.RegularExpressions;
 using System.Threading;
@@ -16,7 +15,6 @@ namespace TweetDuck.Core.Utils{
         private static readonly Lazy<Regex> RegexOffsetClipboardHtml = new Lazy<Regex>(() => new Regex(@"(?<=EndHTML:|EndFragment:)(\d+)"), false);
 
         private static readonly bool IsWindows8OrNewer;
-        private static bool HasMicrosoftBeenBroughtTo2008Yet;
 
         public static int CurrentProcessID { get; }
         public static bool ShouldAvoidToolWindow { get; }
@@ -32,47 +30,6 @@ namespace TweetDuck.Core.Utils{
 
             ShouldAvoidToolWindow = IsWindows8OrNewer;
         }
-        
-        public static void EnsureTLS12(){
-            if (!HasMicrosoftBeenBroughtTo2008Yet){
-                ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12;
-                ServicePointManager.SecurityProtocol &= ~(SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11);
-                HasMicrosoftBeenBroughtTo2008Yet = true;
-            }
-        }
-
-        public static void CreateDirectoryForFile(string file){
-            string dir = Path.GetDirectoryName(file);
-
-            if (dir == null){
-                throw new ArgumentException("Invalid file path: "+file);
-            }
-            else if (dir.Length > 0){
-                Directory.CreateDirectory(dir);
-            }
-        }
-
-        public static bool CheckFolderWritePermission(string path){
-            string testFile = Path.Combine(path, ".test");
-
-            try{
-                Directory.CreateDirectory(path);
-
-                using(File.Create(testFile)){}
-                File.Delete(testFile);
-                return true;
-            }catch{
-                return false;
-            }
-        }
-
-        public static bool FileExistsAndNotEmpty(string path){
-            try{
-                return new FileInfo(path).Length > 0;
-            }catch{
-                return false;
-            }
-        }
 
         public static bool OpenAssociatedProgram(string file, string arguments = "", bool runElevated = false){
             try{

Data/Serialization/ITypeConverter.cs

@@ -1,8 +0,0 @@
-using System;
-
-namespace TweetDuck.Data.Serialization{
-    interface ITypeConverter{
-        bool TryWriteType(Type type, object value, out string converted);
-        bool TryReadType(Type type, string value, out object converted);
-    }
-}

Data/WindowState.cs

@@ -1,8 +1,8 @@
 using System.Drawing;
 using System.Windows.Forms;
 using TweetDuck.Core.Controls;
-using TweetDuck.Core.Utils;
+using TweetLib.Core.Serialization.Converters;
-using TweetDuck.Data.Serialization;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Data{
     sealed class WindowState{

Plugins/Controls/PluginControl.cs

@@ -3,7 +3,8 @@ using System.Drawing;
 using System.Windows.Forms;
 using TweetDuck.Core.Controls;
 using TweetDuck.Core.Utils;
-using TweetDuck.Plugins.Enums;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Enums;
 
 namespace TweetDuck.Plugins.Controls{
     sealed partial class PluginControl : UserControl{

Plugins/Enums/PluginFolder.cs

@@ -1,5 +0,0 @@
-namespace TweetDuck.Plugins.Enums{
-    enum PluginFolder{
-        Root, Data
-    }
-}

Plugins/PluginBridge.cs

@@ -1,13 +1,17 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using System.Text;
-using TweetDuck.Core.Utils;
+using TweetLib.Core.Collections;
-using TweetDuck.Data;
+using TweetLib.Core.Data;
-using TweetDuck.Plugins.Enums;
+using TweetLib.Core.Features.Plugins;
-using TweetDuck.Plugins.Events;
+using TweetLib.Core.Features.Plugins.Enums;
+using TweetLib.Core.Features.Plugins.Events;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Plugins{
+    [SuppressMessage("ReSharper", "UnusedMember.Global")]
     sealed class PluginBridge{
         private static string SanitizeCacheKey(string key){
             return key.Replace('\\', '/').Trim();
@@ -80,7 +84,7 @@ namespace TweetDuck.Plugins{
         public void WriteFile(int token, string path, string contents){
             string fullPath = GetFullPathOrThrow(token, PluginFolder.Data, path);
 
-            WindowsUtils.CreateDirectoryForFile(fullPath);
+            FileUtils.CreateDirectoryForFile(fullPath);
             File.WriteAllText(fullPath, contents, Encoding.UTF8);
             fileCache[token, SanitizeCacheKey(path)] = contents;
         }

Plugins/PluginManager.cs

@@ -6,10 +6,12 @@ using System.IO;
 using System.Linq;
 using System.Windows.Forms;
 using TweetDuck.Core.Utils;
-using TweetDuck.Data;
-using TweetDuck.Plugins.Enums;
-using TweetDuck.Plugins.Events;
 using TweetDuck.Resources;
+using TweetLib.Core.Data;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Config;
+using TweetLib.Core.Features.Plugins.Enums;
+using TweetLib.Core.Features.Plugins.Events;
 
 namespace TweetDuck.Plugins{
     sealed class PluginManager{
@@ -126,12 +128,19 @@ namespace TweetDuck.Plugins{
                 }
 
                 foreach(string fullDir in Directory.EnumerateDirectories(path, "*", SearchOption.TopDirectoryOnly)){
+                    string name = Path.GetFileName(fullDir);
+
+                    if (string.IsNullOrEmpty(name)){
+                        loadErrors.Add($"{group.GetIdentifierPrefix()}(?): Could not extract directory name from path: {fullDir}");
+                        continue;
+                    }
+
                     Plugin plugin;
 
                     try{
-                        plugin = PluginLoader.FromFolder(fullDir, group);
+                        plugin = PluginLoader.FromFolder(name, fullDir, Path.Combine(Program.PluginDataPath, group.GetIdentifierPrefix(), name), group);
                     }catch(Exception e){
-                        loadErrors.Add(group.GetIdentifierPrefix()+Path.GetFileName(fullDir)+": "+e.Message);
+                        loadErrors.Add($"{group.GetIdentifierPrefix()}{name}: {e.Message}");
                         continue;
                     }
 

Program.cs

@@ -2,10 +2,8 @@ using CefSharp;
 using CefSharp.WinForms;
 using System;
 using System.Diagnostics;
-using System.Globalization;
 using System.IO;
 using System.Linq;
-using System.Threading;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
 using TweetDuck.Core;
@@ -14,14 +12,16 @@ using TweetDuck.Core.Handling.General;
 using TweetDuck.Core.Other;
 using TweetDuck.Core.Management;
 using TweetDuck.Core.Utils;
-using TweetDuck.Data;
+using TweetLib.Core;
+using TweetLib.Core.Collections;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck{
     static class Program{
-        public const string BrandName = "TweetDuck";
+        public const string BrandName = Lib.BrandName;
-        public const string Website = "https://tweetduck.chylex.com";
+        public const string VersionTag = Lib.VersionTag;
 
-        public const string VersionTag = "1.17.4";
+        public const string Website = "https://tweetduck.chylex.com";
 
         public static readonly string ProgramPath = AppDomain.CurrentDomain.BaseDirectory;
         public static readonly bool IsPortable = File.Exists(Path.Combine(ProgramPath, "makeportable"));
@@ -48,23 +48,18 @@ namespace TweetDuck{
         private static readonly LockManager LockManager = new LockManager(Path.Combine(StoragePath, ".lock"));
         private static bool HasCleanedUp;
         
-        public static CultureInfo Culture { get; }
         public static Reporter Reporter { get; }
         public static ConfigManager Config { get; }
-        
+
         static Program(){
-            Culture = CultureInfo.CurrentCulture;
-            Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
-            CultureInfo.DefaultThreadCurrentCulture = CultureInfo.InvariantCulture;
-
-            #if DEBUG
-            CultureInfo.DefaultThreadCurrentUICulture = Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-us"); // force english exceptions
-            #endif
-
             Reporter = new Reporter(ErrorLogFilePath);
             Reporter.SetupUnhandledExceptionHandler("TweetDuck Has Failed :(");
 
             Config = new ConfigManager();
+
+            Lib.Initialize(new App.Builder{
+                ErrorHandler = Reporter
+            });
         }
 
         [STAThread]
@@ -75,7 +70,7 @@ namespace TweetDuck{
             
             WindowRestoreMessage = NativeMethods.RegisterWindowMessage("TweetDuckRestore");
 
-            if (!WindowsUtils.CheckFolderWritePermission(StoragePath)){
+            if (!FileUtils.CheckFolderWritePermission(StoragePath)){
                 FormMessage.Warning("Permission Error", "TweetDuck does not have write permissions to the storage folder: "+StoragePath, FormMessage.OK);
                 return;
             }
@@ -131,7 +126,7 @@ namespace TweetDuck{
             }
             
             try{
-                RequestHandlerBase.LoadResourceRewriteRules(Arguments.GetValue(Arguments.ArgFreeze, null));
+                RequestHandlerBase.LoadResourceRewriteRules(Arguments.GetValue(Arguments.ArgFreeze));
             }catch(Exception e){
                 FormMessage.Error("Resource Freeze", "Error parsing resource rewrite rules: "+e.Message, FormMessage.OK);
                 return;
@@ -168,7 +163,7 @@ namespace TweetDuck{
 
                 // ProgramPath has a trailing backslash
                 string updaterArgs = "/SP- /SILENT /FORCECLOSEAPPLICATIONS /UPDATEPATH=\""+ProgramPath+"\" /RUNARGS=\""+Arguments.GetCurrentForInstallerCmd()+"\""+(IsPortable ? " /PORTABLE=1" : "");
-                bool runElevated = !IsPortable || !WindowsUtils.CheckFolderWritePermission(ProgramPath);
+                bool runElevated = !IsPortable || !FileUtils.CheckFolderWritePermission(ProgramPath);
 
                 if (WindowsUtils.OpenAssociatedProgram(mainForm.UpdateInstallerPath, updaterArgs, runElevated)){
                     Application.Exit();
@@ -180,7 +175,7 @@ namespace TweetDuck{
         }
 
         private static string GetDataStoragePath(){
-            string custom = Arguments.GetValue(Arguments.ArgDataFolder, null);
+            string custom = Arguments.GetValue(Arguments.ArgDataFolder);
 
             if (custom != null && (custom.Contains(Path.DirectorySeparatorChar) || custom.Contains(Path.AltDirectorySeparatorChar))){
                 if (Path.GetInvalidPathChars().Any(custom.Contains)){

Properties/Resources.Designer.cs

@@ -19,7 +19,7 @@ namespace TweetDuck.Properties {
     // class via a tool like ResGen or Visual Studio.
     // To add or remove a member, edit your .ResX file then rerun ResGen
     // with the /str option, or rebuild your VS project.
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "15.0.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "16.0.0.0")]
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     internal class Resources {

README.md

@@ -1,25 +1,23 @@
 # Support
 
-[Follow TweetDuck on Twitter](https://twitter.com/TryMyAwesomeApp)  |  [Support via PayPal](https://paypal.me/chylex)  |  [Support via Patreon](https://www.patreon.com/chylex)
+[Follow TweetDuck on Twitter](https://twitter.com/TryMyAwesomeApp)  |  [Support via Ko-fi](https://ko-fi.com/chylex)  |  [Support via Patreon](https://www.patreon.com/chylex)
 
 # Build Instructions
 
 ### Setup
 
-The program was built using Visual Studio 2017. Before opening the solution, please make sure you have the following workloads and components installed (optional components that are not listed can be deselected to save space):
+The program can be built using Visual Studio 2019. Before opening the solution, please make sure you have the following workloads and components installed (optional components that are not listed can be deselected to save space):
 * **.NET desktop development**
-  * .NET Framework 4 – 4.6 development tools
+  * .NET Framework 4.7.2 SDK
   * F# desktop language support
 * **Desktop development with C++**
-  * VC++ 2017 latest v141 tools
+  * MSVC v142 - VS 2019 C++ x64/x86 build tools (v14.20)
 
 After opening the solution, right-click the solution and select **Restore NuGet Packages**, or manually run this command in the **Package Manager Console**:
 ```
-PM> Install-Package CefSharp.WinForms -Version 67.0.0-pre01
+PM> Install-Package CefSharp.WinForms -Version 67.0.0
 ```
 
-Note that some pre-release builds of CefSharp are not available on NuGet. To correctly restore packages in that case, open **Package Manager Settings**, and add `https://www.myget.org/F/cefsharp/api/v3/index.json` to the list of package sources.
-
 ### Debug
 
 The `Debug` configuration uses a separate data folder by default (`%LOCALAPPDATA%\TweetDuckDebug`) to avoid affecting an existing installation of TweetDuck. You can modify this by opening **TweetDuck Properties** in Visual Studio, clicking the **Debug** tab, and changing the **Command line arguments** field.
@@ -44,11 +42,6 @@ If you decide to publicly release a custom version, please make it clear that it
 - Some files are checked for invalid characters:
   - `Resources/Plugins/emoji-keyboard/emoji-ordering.txt` line endings must be LF (line feed); any CR (carriage return) in the file will cause a failed build, and you will need to ensure correct line endings in your text editor
 
-#### Error: The "EmbedAllSources" parameter is not supported by the "Csc" task
-1. Open `C:\Program Files (x86)\Visual Studio\2017\<edition>\MSBuild\15.0\Bin\Roslyn\Microsoft.CSharp.Core.targets` in a text editor
-2. Remove line that says `EmbedAllSources="$(EmbedAllSources)"`
-3. Hope the next Visual Studio update fixes it...
-
 ### Installers
 
 TweetDuck uses **Inno Setup** for installers and updates. First, download and install [InnoSetup QuickStart Pack](http://www.jrsoftware.org/isdl.php) (non-unicode; editor and encryption support not required) and the [Inno Download Plugin](https://code.google.com/archive/p/inno-download-plugin).

Reporter.cs

@@ -6,9 +6,11 @@ using System.Text;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
 using TweetDuck.Core.Other;
+using TweetLib.Core;
+using TweetLib.Core.Application;
 
 namespace TweetDuck{
-    sealed class Reporter{
+    sealed class Reporter : IAppErrorHandler{
         private readonly string logFile;
 
         public Reporter(string logFile){
@@ -28,8 +30,12 @@ namespace TweetDuck{
         }
 
         public bool LogImportant(string data){
+            return ((IAppErrorHandler)this).Log(data);
+        }
+
+        bool IAppErrorHandler.Log(string text){
             #if DEBUG
-            Debug.WriteLine(data);
+            Debug.WriteLine(text);
             #endif
 
             StringBuilder build = new StringBuilder();
@@ -38,8 +44,8 @@ namespace TweetDuck{
                 build.Append("Please, report all issues to: https://github.com/chylex/TweetDuck/issues\r\n\r\n");
             }
 
-            build.Append("[").Append(DateTime.Now.ToString("G", Program.Culture)).Append("]\r\n");
+            build.Append("[").Append(DateTime.Now.ToString("G", Lib.Culture)).Append("]\r\n");
-            build.Append(data).Append("\r\n\r\n");
+            build.Append(text).Append("\r\n\r\n");
 
             try{
                 File.AppendAllText(logFile, build.ToString(), Encoding.UTF8);

Resources/Plugins/edit-design/browser.js

@@ -8,6 +8,7 @@ enabled(){
     _theme: "light",
     themeOverride: false,
     columnWidth: "310px",
+    composerWidth: "default",
     fontSize: "12px",
     hideTweetActions: true,
     moveTweetActionsToRight: true,
@@ -380,8 +381,15 @@ enabled(){
     this.css.insert("#general_settings .cf { display: none !important }");
     this.css.insert("#settings-modal .js-setting-list li:nth-child(3) { border-bottom: 1px solid #ccd6dd }");
     
-    this.css.insert("html[data-td-font] { font-size: "+this.config.fontSize+" !important }");
+    this.css.insert(`html[data-td-font] { font-size: ${this.config.fontSize} !important }`);
-    this.css.insert(".avatar { border-radius: "+this.config.avatarRadius+"% !important }");
+    this.css.insert(`.avatar { border-radius: ${this.config.avatarRadius}% !important }`);
+    
+    if (this.config.composerWidth !== "default"){
+      const width = this.config.composerWidth;
+      this.css.insert(`.js-app-content.is-open { margin-right: ${width} !important; transform: translateX(${width}) !important }`);
+      this.css.insert(`#tduck .js-app-content.tduck-is-opening { margin-right: 0 !important }`);
+      this.css.insert(`.js-drawer { width: ${width} !important; left: -${width} !important }`);
+    }
     
     let currentTheme = TD.settings.getTheme();
     
@@ -638,6 +646,13 @@ ${notificationScrollbarColor ? `
       $(".js-dropdown.pos-r").toggleClass("pos-r pos-l");
     }
   };
+  
+  this.uiDrawerActiveEvent = (e, data) => {
+    return if data.activeDrawer === null || this.config.composerWidth === "default";
+    
+    const ele = $(".js-app-content").addClass("tduck-is-opening");
+    setTimeout(() => ele.removeClass("tduck-is-opening"), 250);
+  };
 }
 
 ready(){
@@ -647,6 +662,7 @@ ready(){
   
   // layout events
   $(document).on("uiShowActionsMenu", this.uiShowActionsMenuEvent);
+  $(document).on("uiDrawerActive", this.uiDrawerActiveEvent);
   
   // modal
   $("[data-action='settings-menu']").on("click", this.onSettingsMenuClickedEvent);
@@ -709,10 +725,12 @@ disabled(){
     window.clearTimeout(this.optimizationTimer);
   }
   
-  $(document).off("uiShowActionsMenu", this.uiShowActionsMenuEvent);
   $(window).off("focus", this.onWindowFocusEvent);
   $(window).off("blur", this.onWindowBlurEvent);
   
+  $(document).off("uiShowActionsMenu", this.uiShowActionsMenuEvent);
+  $(document).off("uiDrawerActive", this.uiDrawerActiveEvent);
+  
   TD.components.GlobalSettings.prototype.getInfo = this.prevFuncSettingsGetInfo;
   TD.components.GlobalSettings.prototype.switchTab = this.prevFuncSettingsSwitchTab;
   

Resources/Plugins/edit-design/modal.html

@@ -55,6 +55,20 @@
             <option disabled></option>
           </select>
           
+          <!-- COMPOSER SIZE -->
+          
+          <label class="txt-uppercase touch-larger-label">
+            <b>New Tweet panel</b>
+          </label>
+          <select data-td-key="composerWidth">
+            <option value="default">Default</option>
+            <option value="270px">Narrow (270px)</option>
+            <option value="310px">Medium (310px)</option>
+            <option value="350px">Wide (350px)</option>
+            <option value="custom-px">Custom</option>
+            <option value="change-custom-px">Change custom value...</option>
+          </select>
+          
           <!-- FONT SIZE -->
           
           <label class="txt-uppercase touch-larger-label">
@@ -69,10 +83,6 @@
             <option value="custom-px">Custom</option>
             <option value="change-custom-px">Change custom value...</option>
           </select>
-          <label class="checkbox">
-            <input data-td-key="forceArialFont" class="js-theme-checkbox touch-larger-label" type="checkbox">
-            Use Arial as default font
-          </label>
           <label class="checkbox">
             <input data-td-key="increaseQuoteTextSize" class="js-theme-checkbox touch-larger-label" type="checkbox">
             Increase quoted tweet font size
@@ -116,6 +126,10 @@
             <input data-td-key="themeColorTweaks" class="js-theme-checkbox touch-larger-label" type="checkbox">
             Theme color tweaks
           </label>
+          <label class="checkbox">
+            <input data-td-key="forceArialFont" class="js-theme-checkbox touch-larger-label" type="checkbox">
+            Use Arial as default font
+          </label>
           
           <!-- ADVANCED -->
           
@@ -172,7 +186,7 @@
   
   #edit-design-panel {
     width: 693px;
-    height: 380px;
+    height: 424px;
     background-color: #FFF;
     box-shadow: 0 0 10px rgba(17, 17, 17, 0.5);
   }
@@ -217,7 +231,7 @@
   
   #edit-design-panel-content label.radio {
     display: inline-block;
-    margin: 0 16px 5px 4px;
+    margin: 0 16px 0 4px;
     cursor: pointer;
   }
   

Resources/Plugins/emoji-keyboard/browser.js

@@ -56,12 +56,6 @@ enabled(){
   this.prevComposeMustache = TD.mustaches["compose/docked_compose.mustache"];
   window.TDPF_injectMustache("compose/docked_compose.mustache", "append", '<div class="cf margin-t--12 margin-b--30">', buttonHTML);
   
-  let maybeDockedComposePanel = $(".js-docked-compose");
-  
-  if (maybeDockedComposePanel.length){
-    maybeDockedComposePanel.find(".cf.margin-t--12.margin-b--30").first().append(buttonHTML);
-  }
-  
   this.getDrawerInput = () => {
     return $(".js-compose-text", me.composeDrawer);
   };
@@ -386,13 +380,9 @@ enabled(){
     hideKeyboard();
   };
   
-  this.drawerToggleEvent = function(e, data){
+  this.composerActiveEvent = function(e){
-    if (data.activeDrawer === "compose"){
+    $(".emoji-keyboard-popup-btn", me.composeDrawer).on("click", me.emojiKeyboardButtonClickEvent);
-      setTimeout(function(){
+    $(".js-docked-compose .js-compose-scroller > .scroll-v", me.composeDrawer).on("scroll", me.composerScrollEvent);
-        $(".emoji-keyboard-popup-btn", me.composeDrawer).on("click", me.emojiKeyboardButtonClickEvent);
-        $(".js-docked-compose .js-compose-scroller > .scroll-v", me.composeDrawer).on("scroll", me.composerScrollEvent);
-      }, 0);
-    }
   };
   
   this.documentClickEvent = function(e){
@@ -413,6 +403,15 @@ enabled(){
       me.currentKeyboard.style.top = getKeyboardTop()+"px";
     }
   };
+  
+  // re-enabling
+  
+  let maybeDockedComposePanel = $(".js-docked-compose");
+  
+  if (maybeDockedComposePanel.length){
+    maybeDockedComposePanel.find(".cf.margin-t--12.margin-b--30").first().append(buttonHTML);
+    this.composerActiveEvent();
+  }
 }
 
 ready(){
@@ -421,7 +420,7 @@ ready(){
   
   $(document).on("click", this.documentClickEvent);
   $(document).on("keydown", this.documentKeyEvent);
-  $(document).on("uiDrawerActive", this.drawerToggleEvent);
+  $(document).on("tduckOldComposerActive", this.composerActiveEvent);
   $(document).on("uiComposeImageAdded", this.uploadFilesEvent);
   
   this.composeDrawer.on("uiComposeTweetSending", this.composerSendingEvent);
@@ -473,7 +472,7 @@ ready(){
     };
     
     // line reading
-                      
+    
     let skinToneState = 0;
     
     for(let line of contents.split("\n")){
@@ -547,7 +546,7 @@ disabled(){
   
   $(document).off("click", this.documentClickEvent);
   $(document).off("keydown", this.documentKeyEvent);
-  $(document).off("uiDrawerActive", this.drawerToggleEvent);
+  $(document).off("tduckOldComposerActive", this.composerActiveEvent);
   $(document).off("uiComposeImageAdded", this.uploadFilesEvent);
   
   this.composeDrawer.off("uiComposeTweetSending", this.composerSendingEvent);

Resources/Plugins/templates/browser.js

@@ -376,7 +376,7 @@ enabled(){
   };
   
   this.drawerToggleEvent = function(e, data){
-    if (data.activeDrawer === null){
+    if (typeof data === "undefined" || data.activeDrawer !== "compose"){
       hideTemplateModal();
     }
   };
@@ -385,6 +385,7 @@ enabled(){
 ready(){
   $(".js-drawer[data-drawer='compose']").on("click", ".manage-templates-btn", this.manageTemplatesButtonClickEvent);
   $(document).on("uiDrawerActive", this.drawerToggleEvent);
+  $(document).on("click", ".js-new-composer-opt-in", this.drawerToggleEvent);
 }
 
 disabled(){
@@ -393,6 +394,7 @@ disabled(){
   
   $(".js-drawer[data-drawer='compose']").off("click", ".manage-templates-btn", this.manageTemplatesButtonClickEvent);
   $(document).off("uiDrawerActive", this.drawerToggleEvent);
+  $(document).off("click", ".js-new-composer-opt-in", this.drawerToggleEvent);
   
   TD.mustaches["compose/docked_compose.mustache"] = this.prevComposeMustache;
 }

Resources/Scripts/code.js

@@ -477,6 +477,19 @@
     });
   });
   
+  //
+  // Block: Hook into composer event.
+  //
+  execSafe(function hookComposerEvents(){
+    $(document).on("uiDrawerActive uiRwebComposerOptOut", function(e, data){
+      return if e.type === "uiDrawerActive" && data.activeDrawer !== "compose";
+      
+      setTimeout(function(){
+        $(document).trigger("tduckOldComposerActive");
+      }, 0);
+    });
+  });
+  
   //
   // Block: Add TweetDuck buttons to the settings menu.
   //
@@ -810,7 +823,7 @@
       html.addClass($(document.documentElement).attr("class"));
       html.addClass($(document.body).attr("class"));
       
-      html.css("background-color", getClassStyleProperty("column", "background-color"));
+      html.css("background-color", getClassStyleProperty("stream-item", "background-color"));
       html.css("border", "none");
       
       for(let selector of [ ".js-quote-detail", ".js-media-preview-container", ".js-media" ]){
@@ -1047,12 +1060,8 @@
       setTimeout(refocusInput, 0);
     };
     
-    $(document).on("uiDrawerActive", function(e, data){
+    $(document).on("tduckOldComposerActive", function(e){
-      if (data.activeDrawer === "compose"){
+      $$(".js-account-list", ".js-docked-compose").delegate(".js-account-item", "click", accountItemClickEvent);
-        setTimeout(function(){
-          $$(".js-account-list", ".js-docked-compose").delegate(".js-account-item", "click", accountItemClickEvent);
-        }, 0);
-      }
     });
   });
   
@@ -1308,29 +1317,25 @@
   //
   // Block: Add a pin icon to make tweet compose drawer stay open.
   //
-  onAppReady.push(function setupStayOpenPin(){
+  execSafe(function setupStayOpenPin(){
-    let ele = $(`
+    $(document).on("tduckOldComposerActive", function(e){
-<svg id="td-compose-drawer-pin" viewBox="0 0 24 24" class="icon js-show-tip" data-original-title="Stay open" data-tooltip-position="left">
+      let ele = $(`#import "markup/pin.html"`).appendTo(".js-docked-compose .js-compose-header");
- <path d="M9.884,16.959l3.272,0.001l-0.82,4.568l-1.635,0l-0.817,-4.569Z"/>
+      
- <rect x="8.694" y="7.208" width="5.652" height="7.445"/>
+      ele.click(function(){
- <path d="M16.877,17.448c0,-1.908 -1.549,-3.456 -3.456,-3.456l-3.802,0c-1.907,0 -3.456,1.548 -3.456,3.456l10.714,0Z"/>
+        if (TD.settings.getComposeStayOpen()){
- <path d="M6.572,5.676l2.182,2.183l5.532,0l2.182,-2.183l0,-1.455l-9.896,0l0,1.455Z"/>
+          ele.css("transform", "rotate(0deg)");
-</svg>`).appendTo(".js-docked-compose .js-compose-header");
+          TD.settings.setComposeStayOpen(false);
-    
+        }
-    ele.click(function(){
+        else{
+          ele.css("transform", "rotate(90deg)");
+          TD.settings.setComposeStayOpen(true);
+        }
+      });
+      
       if (TD.settings.getComposeStayOpen()){
-        ele.css("transform", "rotate(0deg)");
-        TD.settings.setComposeStayOpen(false);
-      }
-      else{
         ele.css("transform", "rotate(90deg)");
-        TD.settings.setComposeStayOpen(true);
       }
     });
-    
-    if (TD.settings.getComposeStayOpen()){
-      ele.css("transform", "rotate(90deg)");
-    }
   });
   
   //

Resources/Scripts/imports/markup/pin.html

@@ -0,0 +1,6 @@
+<svg id="td-compose-drawer-pin" viewBox="0 0 24 24" class="icon js-show-tip" data-original-title="Stay open" data-tooltip-position="left">
+  <path d="M9.884,16.959l3.272,0.001l-0.82,4.568l-1.635,0l-0.817,-4.569Z"/>
+  <rect x="8.694" y="7.208" width="5.652" height="7.445"/>
+  <path d="M16.877,17.448c0,-1.908 -1.549,-3.456 -3.456,-3.456l-3.802,0c-1.907,0 -3.456,1.548 -3.456,3.456l10.714,0Z"/>
+  <path d="M6.572,5.676l2.182,2.183l5.532,0l2.182,-2.183l0,-1.455l-9.896,0l0,1.455Z"/>
+</svg>

Resources/Scripts/styles/browser.css

@@ -249,10 +249,14 @@ a[data-full-url] {
   transition: transform 0.1s ease;
 }
 
-.js-docked-compose footer {
+.js-docked-compose .compose-remember-state {
   display: none !important;
 }
 
+.js-new-composer-opt-in {
+  border-bottom: none !important;
+}
+
 .compose-content {
   bottom: 0 !important;
 }

TweetDuck.csproj

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props" Condition="Exists('packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props')" />
+  <Import Project="packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props" Condition="Exists('packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.props" Condition="Exists('packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.props')" />
   <Import Project="packages\CefSharp.Common.67.0.0\build\CefSharp.Common.props" Condition="Exists('packages\CefSharp.Common.67.0.0\build\CefSharp.Common.props')" />
   <Import Project="packages\cef.redist.x86.3.3396.1786\build\cef.redist.x86.props" Condition="Exists('packages\cef.redist.x86.3.3396.1786\build\cef.redist.x86.props')" />
@@ -14,7 +14,8 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TweetDuck</RootNamespace>
     <AssemblyName>TweetDuck</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <LangVersion>8.0</LangVersion>
     <FileAlignment>512</FileAlignment>
     <UseVSHostingProcess>false</UseVSHostingProcess>
     <ApplicationIcon>Resources\Images\icon.ico</ApplicationIcon>
@@ -33,7 +34,6 @@
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
     <Prefer32Bit>false</Prefer32Bit>
-    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -43,7 +43,6 @@
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
     <Prefer32Bit>false</Prefer32Bit>
-    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
@@ -55,10 +54,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Configuration\Arguments.cs" />
-    <Compile Include="Configuration\Instance\FileConfigInstance.cs" />
     <Compile Include="Configuration\ConfigManager.cs" />
-    <Compile Include="Configuration\Instance\IConfigInstance.cs" />
-    <Compile Include="Configuration\Instance\PluginConfigInstance.cs" />
     <Compile Include="Configuration\LockManager.cs" />
     <Compile Include="Configuration\SystemConfig.cs" />
     <Compile Include="Configuration\UserConfig.cs" />
@@ -198,10 +194,7 @@
       <DependentUpon>TabSettingsFeedback.cs</DependentUpon>
     </Compile>
     <Compile Include="Core\TweetDeckBrowser.cs" />
-    <Compile Include="Core\Utils\LocaleUtils.cs" />
-    <Compile Include="Core\Utils\StringUtils.cs" />
     <Compile Include="Core\Utils\TwitterUtils.cs" />
-    <Compile Include="Data\CombinedFileStream.cs" />
     <Compile Include="Core\Management\ProfileManager.cs" />
     <Compile Include="Core\Other\Settings\TabSettingsAdvanced.cs">
       <SubType>UserControl</SubType>
@@ -231,19 +224,11 @@
       <DependentUpon>TabSettingsNotifications.cs</DependentUpon>
     </Compile>
     <Compile Include="Core\Notification\Screenshot\ScreenshotBridge.cs" />
-    <Compile Include="Data\CommandLineArgs.cs" />
     <Compile Include="Core\Notification\Screenshot\FormNotificationScreenshotable.cs">
       <SubType>Form</SubType>
     </Compile>
     <Compile Include="Core\Notification\Screenshot\TweetScreenshotManager.cs" />
     <Compile Include="Data\ResourceLink.cs" />
-    <Compile Include="Data\Result.cs" />
-    <Compile Include="Data\Serialization\FileSerializer.cs" />
-    <Compile Include="Data\InjectedHTML.cs" />
-    <Compile Include="Data\Serialization\ITypeConverter.cs" />
-    <Compile Include="Data\Serialization\SerializationSoftException.cs" />
-    <Compile Include="Data\Serialization\SingleTypeConverter.cs" />
-    <Compile Include="Data\TwoKeyDictionary.cs" />
     <Compile Include="Data\WindowState.cs" />
     <Compile Include="Core\Utils\WindowsUtils.cs" />
     <Compile Include="Core\Bridge\TweetDeckBridge.cs" />
@@ -262,25 +247,15 @@
     <Compile Include="Plugins\Controls\PluginListFlowLayout.cs">
       <SubType>Component</SubType>
     </Compile>
-    <Compile Include="Plugins\Enums\PluginFolder.cs" />
-    <Compile Include="Plugins\IPluginConfig.cs" />
-    <Compile Include="Plugins\Plugin.cs" />
-    <Compile Include="Plugins\Events\PluginChangedStateEventArgs.cs" />
     <Compile Include="Plugins\PluginBridge.cs" />
     <Compile Include="Configuration\PluginConfig.cs" />
-    <Compile Include="Plugins\Enums\PluginEnvironment.cs" />
-    <Compile Include="Plugins\Enums\PluginGroup.cs" />
-    <Compile Include="Plugins\Events\PluginErrorEventArgs.cs" />
-    <Compile Include="Plugins\PluginLoader.cs" />
     <Compile Include="Plugins\PluginManager.cs" />
-    <Compile Include="Plugins\PluginScriptGenerator.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
     <Compile Include="Reporter.cs" />
-    <Compile Include="Updates\UpdateCheckEventArgs.cs" />
     <Compile Include="Updates\FormUpdateDownload.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -297,9 +272,6 @@
     <Compile Include="Core\Utils\BrowserUtils.cs" />
     <Compile Include="Core\Utils\NativeMethods.cs" />
     <Compile Include="Updates\UpdateCheckClient.cs" />
-    <Compile Include="Updates\UpdateDownloadStatus.cs" />
-    <Compile Include="Updates\UpdateHandler.cs" />
-    <Compile Include="Updates\UpdateInfo.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Resources\ScriptLoader.cs" />
@@ -380,6 +352,10 @@
     <None Include="Resources\Scripts\update.js" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="lib\TweetLib.Core\TweetLib.Core.csproj">
+      <Project>{93ba3cb4-a812-4949-b07d-8d393fb38937}</Project>
+      <Name>TweetLib.Core</Name>
+    </ProjectReference>
     <ProjectReference Include="subprocess\TweetDuck.Browser.csproj">
       <Project>{b10b0017-819e-4f71-870f-8256b36a26aa}</Project>
       <Name>TweetDuck.Browser</Name>
@@ -431,7 +407,7 @@ IF EXIST "$(ProjectDir)bld\post_build.exe" (
     <Error Condition="!Exists('packages\CefSharp.Common.67.0.0\build\CefSharp.Common.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\CefSharp.Common.67.0.0\build\CefSharp.Common.targets'))" />
     <Error Condition="!Exists('packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.props'))" />
     <Error Condition="!Exists('packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.targets'))" />
-    <Error Condition="!Exists('packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props'))" />
+    <Error Condition="!Exists('packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props'))" />
   </Target>
   <Import Project="packages\CefSharp.Common.67.0.0\build\CefSharp.Common.targets" Condition="Exists('packages\CefSharp.Common.67.0.0\build\CefSharp.Common.targets')" />
   <Import Project="packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.targets" Condition="Exists('packages\CefSharp.WinForms.67.0.0\build\CefSharp.WinForms.targets')" />

TweetDuck.sln

@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
+# Visual Studio Version 16
-VisualStudioVersion = 15.0.27130.2027
+VisualStudioVersion = 16.0.28729.10
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TweetDuck", "TweetDuck.csproj", "{2389A7CD-E0D3-4706-8294-092929A33A2D}"
 EndProject
@@ -14,6 +14,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TweetTest.System", "lib\Twe
 EndProject
 Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "TweetTest.Unit", "lib\TweetTest.Unit\TweetTest.Unit.fsproj", "{EEE1071A-28FA-48B1-82A1-9CBDC5C3F2C3}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TweetDuck.Core", "lib\TweetLib.Core\TweetLib.Core.csproj", "{93BA3CB4-A812-4949-B07D-8D393FB38937}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x86 = Debug|x86
@@ -42,6 +44,10 @@ Global
 		{EEE1071A-28FA-48B1-82A1-9CBDC5C3F2C3}.Debug|x86.ActiveCfg = Debug|x86
 		{EEE1071A-28FA-48B1-82A1-9CBDC5C3F2C3}.Debug|x86.Build.0 = Debug|x86
 		{EEE1071A-28FA-48B1-82A1-9CBDC5C3F2C3}.Release|x86.ActiveCfg = Debug|x86
+		{93BA3CB4-A812-4949-B07D-8D393FB38937}.Debug|x86.ActiveCfg = Debug|x86
+		{93BA3CB4-A812-4949-B07D-8D393FB38937}.Debug|x86.Build.0 = Debug|x86
+		{93BA3CB4-A812-4949-B07D-8D393FB38937}.Release|x86.ActiveCfg = Release|x86
+		{93BA3CB4-A812-4949-B07D-8D393FB38937}.Release|x86.Build.0 = Release|x86
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Updates/FormUpdateDownload.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Windows.Forms;
+using TweetLib.Core.Features.Updates;
 
 namespace TweetDuck.Updates{
     sealed partial class FormUpdateDownload : Form{

Updates/UpdateCheckClient.cs

@@ -6,10 +6,12 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Web.Script.Serialization;
 using TweetDuck.Core.Utils;
+using TweetLib.Core.Features.Updates;
+using TweetLib.Core.Utils;
 using JsonObject = System.Collections.Generic.IDictionary<string, object>;
 
 namespace TweetDuck.Updates{
-    sealed class UpdateCheckClient{
+    sealed class UpdateCheckClient : IUpdateCheckClient{
         private const string ApiLatestRelease = "https://api.github.com/repos/chylex/TweetDuck/releases/latest";
         private const string UpdaterAssetName = "TweetDuck.Update.exe";
 
@@ -19,10 +21,12 @@ namespace TweetDuck.Updates{
             this.installerFolder = installerFolder;
         }
 
-        public Task<UpdateInfo> Check(){
+        bool IUpdateCheckClient.CanCheck => Program.Config.User.EnableUpdateCheck;
+
+        Task<UpdateInfo> IUpdateCheckClient.Check(){
             TaskCompletionSource<UpdateInfo> result = new TaskCompletionSource<UpdateInfo>();
 
-            WebClient client = BrowserUtils.CreateWebClient();
+            WebClient client = WebUtils.NewClient(BrowserUtils.UserAgentVanilla);
             client.Headers[HttpRequestHeader.Accept] = "application/vnd.github.v3+json";
 
             client.DownloadStringTaskAsync(ApiLatestRelease).ContinueWith(task => {
@@ -65,10 +69,9 @@ namespace TweetDuck.Updates{
         private static Exception ExpandWebException(Exception e){
             if (e is WebException we && we.Response is HttpWebResponse response){
                 try{
-                    using(Stream stream = response.GetResponseStream())
+                    using var stream = response.GetResponseStream();
-                    using(StreamReader reader = new StreamReader(stream, Encoding.GetEncoding(response.CharacterSet ?? "utf-8"))){
+                    using var reader = new StreamReader(stream, Encoding.GetEncoding(response.CharacterSet ?? "utf-8"));
-                        return new Reporter.ExpandedLogException(e, reader.ReadToEnd());
+                    return new Reporter.ExpandedLogException(e, reader.ReadToEnd());
-                    }
                 }catch{
                     // whatever
                 }

bld/gen_full.iss

@@ -76,14 +76,14 @@ function TDGetNetFrameworkVersion: Cardinal; forward;
 function TDIsVCMissing: Boolean; forward;
 procedure TDInstallVCRedist; forward;
 
-{ Check .NET Framework version on startup, ask user if they want to proceed if older than 4.5.2. }
+{ Check .NET Framework version on startup, ask user if they want to proceed if older than 4.7.2. }
 function InitializeSetup: Boolean;
 begin
   UpdatePath := ExpandConstant('{param:UPDATEPATH}')
   ForceRedistPrompt := ExpandConstant('{param:PROMPTREDIST}')
   VisitedTasksPage := False
   
-  if (TDGetNetFrameworkVersion() < 379893) and (MsgBox('{#MyAppName} requires .NET Framework 4.5.2 or newer,'+#13+#10+'please visit {#MyAppShortURL} for a download link.'+#13+#10+#13+#10'Do you want to proceed with the setup anyway?', mbCriticalError, MB_YESNO or MB_DEFBUTTON2) = IDNO) then
+  if (TDGetNetFrameworkVersion() < 461808) and (MsgBox('{#MyAppName} requires .NET Framework 4.7.2 or newer,'+#13+#10+'please visit {#MyAppShortURL} for a download link.'+#13+#10+#13+#10'Do you want to proceed with the setup anyway?', mbCriticalError, MB_YESNO or MB_DEFBUTTON2) = IDNO) then
   begin
     Result := False
     Exit

bld/gen_port.iss

@@ -64,14 +64,14 @@ function TDGetNetFrameworkVersion: Cardinal; forward;
 function TDIsVCMissing: Boolean; forward;
 procedure TDInstallVCRedist; forward;
 
-{ Check .NET Framework version on startup, ask user if they want to proceed if older than 4.5.2. }
+{ Check .NET Framework version on startup, ask user if they want to proceed if older than 4.7.2. }
 function InitializeSetup: Boolean;
 begin
   UpdatePath := ExpandConstant('{param:UPDATEPATH}')
   ForceRedistPrompt := ExpandConstant('{param:PROMPTREDIST}')
   VisitedTasksPage := False
   
-  if (TDGetNetFrameworkVersion() < 379893) and (MsgBox('{#MyAppName} requires .NET Framework 4.5.2 or newer,'+#13+#10+'please visit {#MyAppShortURL} for a download link.'+#13+#10+#13+#10'Do you want to proceed with the setup anyway?', mbCriticalError, MB_YESNO or MB_DEFBUTTON2) = IDNO) then
+  if (TDGetNetFrameworkVersion() < 461808) and (MsgBox('{#MyAppName} requires .NET Framework 4.7.2 or newer,'+#13+#10+'please visit {#MyAppShortURL} for a download link.'+#13+#10+#13+#10'Do you want to proceed with the setup anyway?', mbCriticalError, MB_YESNO or MB_DEFBUTTON2) = IDNO) then
   begin
     Result := False
     Exit

bld/gen_upd.iss

@@ -81,7 +81,7 @@ procedure TDExecuteFullDownload; forward;
 var IsPortable: Boolean;
 var UpdatePath: String;
 
-{ Check .NET Framework version on startup, ask user if they want to proceed if older than 4.5.2. Prepare full download package if required. }
+{ Check .NET Framework version on startup, ask user if they want to proceed if older than 4.7.2. Prepare full download package if required. }
 function InitializeSetup: Boolean;
 begin
   IsPortable := ExpandConstant('{param:PORTABLE}') = '1'
@@ -99,7 +99,7 @@ begin
     idpAddFile('https://github.com/{#MyAppPublisher}/{#MyAppName}/releases/download/'+TDGetAppVersionClean()+'/'+TDGetFullDownloadFileName(), ExpandConstant('{tmp}\{#MyAppName}.Full.exe'))
   end;
   
-  if (TDGetNetFrameworkVersion() < 379893) and (MsgBox('{#MyAppName} requires .NET Framework 4.5.2 or newer,'+#13+#10+'please visit {#MyAppShortURL} for a download link.'+#13+#10+#13+#10'Do you want to proceed with the setup anyway?', mbCriticalError, MB_YESNO or MB_DEFBUTTON2) = IDNO) then
+  if (TDGetNetFrameworkVersion() < 461808) and (MsgBox('{#MyAppName} requires .NET Framework 4.7.2 or newer,'+#13+#10+'please visit {#MyAppShortURL} for a download link.'+#13+#10+#13+#10'Do you want to proceed with the setup anyway?', mbCriticalError, MB_YESNO or MB_DEFBUTTON2) = IDNO) then
   begin
     Result := False
     Exit

lib/TweetLib.Communication/TweetLib.Communication.csproj

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props')" />
+  <Import Project="..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TweetLib.Communication</RootNamespace>
     <AssemblyName>TweetLib.Communication</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
@@ -23,7 +23,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
-    <LangVersion>7</LangVersion>
+    <LangVersion>8.0</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -51,6 +51,6 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props'))" />
+    <Error Condition="!Exists('..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props'))" />
   </Target>
 </Project>

lib/TweetLib.Communication/packages.config

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Microsoft.Net.Compilers" version="2.9.0" targetFramework="net452" developmentDependency="true" />
+  <package id="Microsoft.Net.Compilers" version="3.0.0" targetFramework="net472" developmentDependency="true" />
 </packages>

lib/TweetLib.Core/App.cs

@@ -0,0 +1,28 @@
+using System;
+using TweetLib.Core.Application;
+
+namespace TweetLib.Core{
+    public sealed class App{
+        public static IAppErrorHandler ErrorHandler { get; private set; }
+
+        // Builder
+
+        public sealed class Builder{
+            public IAppErrorHandler? ErrorHandler { get; set; }
+
+            // Validation
+
+            internal void Initialize(){
+                App.ErrorHandler = Validate(ErrorHandler, nameof(ErrorHandler))!;
+            }
+
+            private T Validate<T>(T obj, string name){
+                if (obj == null){
+                    throw new InvalidOperationException("Missing property " + name + " on the provided App.");
+                }
+
+                return obj;
+            }
+        }
+    }
+}

lib/TweetLib.Core/Application/IAppErrorHandler.cs

@@ -0,0 +1,8 @@
+using System;
+
+namespace TweetLib.Core.Application{
+    public interface IAppErrorHandler{
+        bool Log(string text);
+        void HandleException(string caption, string message, bool canIgnore, Exception e);
+    }
+}

lib/TweetLib.Core/Collections/CommandLineArgs.cs

@@ -2,8 +2,8 @@
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace TweetDuck.Data{
+namespace TweetLib.Core.Collections{
-    sealed class CommandLineArgs{
+    public sealed class CommandLineArgs{
         public static CommandLineArgs FromStringArray(char entryChar, string[] array){
             CommandLineArgs args = new CommandLineArgs();
             ReadStringArray(entryChar, array, args);
@@ -15,7 +15,7 @@ namespace TweetDuck.Data{
                 string entry = array[index];
 
                 if (entry.Length > 0 && entry[0] == entryChar){
-                    if (index < array.Length-1){
+                    if (index < array.Length - 1){
                         string potentialValue = array[index+1];
 
                         if (potentialValue.Length > 0 && potentialValue[0] == entryChar){
@@ -52,7 +52,7 @@ namespace TweetDuck.Data{
                 }
                 else{
                     key = matchValue.Substring(0, indexEquals).TrimStart('-');
-                    value = matchValue.Substring(indexEquals+1).Trim('"');
+                    value = matchValue.Substring(indexEquals + 1).Trim('"');
                 }
 
                 if (key.Length != 0){
@@ -66,7 +66,7 @@ namespace TweetDuck.Data{
         private readonly HashSet<string> flags = new HashSet<string>();
         private readonly Dictionary<string, string> values = new Dictionary<string, string>();
 
-        public int Count => flags.Count+values.Count;
+        public int Count => flags.Count + values.Count;
 
         public void AddFlag(string flag){
             flags.Add(flag.ToLower());
@@ -84,12 +84,8 @@ namespace TweetDuck.Data{
             values[key.ToLower()] = value;
         }
 
-        public bool HasValue(string key){
+        public string? GetValue(string key){
-            return values.ContainsKey(key.ToLower());
+            return values.TryGetValue(key.ToLower(), out string val) ? val : null;
-        }
-
-        public string GetValue(string key, string defaultValue){
-            return values.TryGetValue(key.ToLower(), out string val) ? val : defaultValue;
         }
 
         public void RemoveValue(string key){
@@ -103,7 +99,7 @@ namespace TweetDuck.Data{
                 copy.AddFlag(flag);
             }
 
-            foreach(KeyValuePair<string, string> kvp in values){
+            foreach(var kvp in values){
                 copy.SetValue(kvp.Key, kvp.Value);
             }
 
@@ -115,7 +111,7 @@ namespace TweetDuck.Data{
                 target[flag] = "1";
             }
 
-            foreach(KeyValuePair<string, string> kvp in values){
+            foreach(var kvp in values){
                 target[kvp.Key] = kvp.Value;
             }
         }
@@ -127,11 +123,11 @@ namespace TweetDuck.Data{
                 build.Append(flag).Append(' ');
             }
 
-            foreach(KeyValuePair<string, string> kvp in values){
+            foreach(var kvp in values){
                 build.Append(kvp.Key).Append(" \"").Append(kvp.Value).Append("\" ");
             }
 
-            return build.Length == 0 ? string.Empty : build.Remove(build.Length-1, 1).ToString();
+            return build.Length == 0 ? string.Empty : build.Remove(build.Length - 1, 1).ToString();
         }
     }
 }

lib/TweetLib.Core/Collections/TwoKeyDictionary.cs

@@ -1,8 +1,8 @@
 using System.Collections.Generic;
 using System.Linq;
 
-namespace TweetDuck.Data{
+namespace TweetLib.Core.Collections{
-    sealed class TwoKeyDictionary<K1, K2, V>{
+    public sealed class TwoKeyDictionary<K1, K2, V>{
         private readonly Dictionary<K1, Dictionary<K2, V>> dict;
         private readonly int innerCapacity;
 
@@ -85,7 +85,8 @@ namespace TweetDuck.Data{
 
                 return true;
             }
-            else return false;
+
+            return false;
         }
 
         public bool TryGetValue(K1 outerKey, K2 innerKey, out V value){
@@ -93,7 +94,7 @@ namespace TweetDuck.Data{
                 return innerDict.TryGetValue(innerKey, out value);
             }
             else{
-                value = default(V);
+                value = default!;
                 return false;
             }
         }

lib/TweetLib.Core/Data/CombinedFileStream.cs

@@ -1,11 +1,11 @@
 using System;
 using System.IO;
 using System.Text;
-using TweetDuck.Core.Utils;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Data{
+namespace TweetLib.Core.Data{
-    sealed class CombinedFileStream : IDisposable{
+    public sealed class CombinedFileStream : IDisposable{
-        public const char KeySeparator = '|';
+        private const char KeySeparator = '|';
 
         private readonly Stream stream;
 
@@ -45,7 +45,7 @@ namespace TweetDuck.Data{
             stream.Write(contents, 0, contents.Length);
         }
 
-        public Entry ReadFile(){
+        public Entry? ReadFile(){
             int nameLength = stream.ReadByte();
 
             if (nameLength == -1){
@@ -64,7 +64,7 @@ namespace TweetDuck.Data{
             return new Entry(Encoding.UTF8.GetString(name), contents);
         }
 
-        public string SkipFile(){
+        public string? SkipFile(){
             int nameLength = stream.ReadByte();
 
             if (nameLength == -1){
@@ -120,7 +120,7 @@ namespace TweetDuck.Data{
 
             public void WriteToFile(string path, bool createDirectory){
                 if (createDirectory){
-                    WindowsUtils.CreateDirectoryForFile(path);
+                    FileUtils.CreateDirectoryForFile(path);
                 }
 
                 File.WriteAllBytes(path, contents);

lib/TweetLib.Core/Data/InjectedHTML.cs

@@ -1,7 +1,7 @@
 using System;
 
-namespace TweetDuck.Data{
+namespace TweetLib.Core.Data{
-    sealed class InjectedHTML{
+    public sealed class InjectedHTML{
         public enum Position{
             Before, After
         }
@@ -27,7 +27,7 @@ namespace TweetDuck.Data{
 
             switch(position){
                 case Position.Before: cutIndex = index; break;
-                case Position.After: cutIndex = index+search.Length; break;
+                case Position.After: cutIndex = index + search.Length; break;
                 default: return targetHTML;
             }
 

lib/TweetLib.Core/Data/Result.cs

@@ -1,14 +1,14 @@
 using System;
 
-namespace TweetDuck.Data{
+namespace TweetLib.Core.Data{
-    sealed class Result<T>{
+    public sealed class Result<T>{
         public bool HasValue => exception == null;
 
         public T Value => HasValue ? value : throw new InvalidOperationException("Requested value from a failed result.");
         public Exception Exception => exception ?? throw new InvalidOperationException("Requested exception from a successful result.");
 
         private readonly T value;
-        private readonly Exception exception;
+        private readonly Exception? exception;
 
         public Result(T value){
             this.value = value;
@@ -16,7 +16,7 @@ namespace TweetDuck.Data{
         }
 
         public Result(Exception exception){
-            this.value = default(T);
+            this.value = default!;
             this.exception = exception ?? throw new ArgumentNullException(nameof(exception));
         }
 
@@ -25,12 +25,12 @@ namespace TweetDuck.Data{
                 onSuccess(value);
             }
             else{
-                onException(exception);
+                onException(exception!);
             }
         }
 
         public Result<R> Select<R>(Func<T, R> map){
-            return HasValue ? new Result<R>(map(value)) : new Result<R>(exception);
+            return HasValue ? new Result<R>(map(value)) : new Result<R>(exception!);
         }
     }
 }

lib/TweetLib.Core/Features/Configuration/BaseConfig.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+
+namespace TweetLib.Core.Features.Configuration{
+    public abstract class BaseConfig{
+        private readonly IConfigManager configManager;
+
+        protected BaseConfig(IConfigManager configManager){
+            this.configManager = configManager;
+        }
+
+        // Management
+
+        public void Save(){
+            configManager.GetInstanceInfo(this).Save();
+        }
+
+        public void Reload(){
+            configManager.GetInstanceInfo(this).Reload();
+        }
+
+        public void Reset(){
+            configManager.GetInstanceInfo(this).Reset();
+        }
+
+        // Construction methods
+
+        public T ConstructWithDefaults<T>() where T : BaseConfig{
+            return (T)ConstructWithDefaults(configManager);
+        }
+
+        protected abstract BaseConfig ConstructWithDefaults(IConfigManager configManager);
+
+        // Utility methods
+
+        protected void UpdatePropertyWithEvent<T>(ref T field, T value, EventHandler eventHandler){
+            if (!EqualityComparer<T>.Default.Equals(field, value)){
+                field = value;
+                eventHandler?.Invoke(this, EventArgs.Empty);
+            }
+        }
+
+        protected void UpdatePropertyWithRestartRequest<T>(ref T field, T value){
+            if (!EqualityComparer<T>.Default.Equals(field, value)){
+                field = value;
+                configManager.TriggerProgramRestartRequested();
+            }
+        }
+    }
+}

lib/TweetLib.Core/Features/Configuration/FileConfigInstance.cs

@@ -1,22 +1,20 @@
 using System;
 using System.IO;
-using TweetDuck.Data.Serialization;
+using TweetLib.Core.Serialization;
-
-namespace TweetDuck.Configuration.Instance{
-    sealed class FileConfigInstance<T> : IConfigInstance<T> where T : ConfigManager.BaseConfig{
-        private const string ErrorTitle = "Configuration Error";
 
+namespace TweetLib.Core.Features.Configuration{
+    public sealed class FileConfigInstance<T> : IConfigInstance<T> where T : BaseConfig{
         public T Instance { get; }
         public FileSerializer<T> Serializer { get; }
 
         private readonly string filenameMain;
         private readonly string filenameBackup;
-        private readonly string errorIdentifier;
+        private readonly string identifier;
 
-        public FileConfigInstance(string filename, T instance, string errorIdentifier){
+        public FileConfigInstance(string filename, T instance, string identifier){
             this.filenameMain = filename;
-            this.filenameBackup = filename+".bak";
+            this.filenameBackup = filename + ".bak";
-            this.errorIdentifier = errorIdentifier;
+            this.identifier = identifier;
 
             this.Instance = instance;
             this.Serializer = new FileSerializer<T>();
@@ -27,14 +25,14 @@ namespace TweetDuck.Configuration.Instance{
         }
 
         public void Load(){
-            Exception firstException = null;
+            Exception? firstException = null;
             
             for(int attempt = 0; attempt < 2; attempt++){
                 try{
                     LoadInternal(attempt > 0);
 
                     if (firstException != null){ // silently log exception that caused a backup restore
-                        Program.Reporter.LogImportant(firstException.ToString());
+                        App.ErrorHandler.Log(firstException.ToString());
                     }
 
                     return;
@@ -49,13 +47,13 @@ namespace TweetDuck.Configuration.Instance{
             }
             
             if (firstException is FormatException){
-                Program.Reporter.HandleException(ErrorTitle, "The configuration file for "+errorIdentifier+" is outdated or corrupted. If you continue, your "+errorIdentifier+" will be reset.", true, firstException);
+                OnException($"The configuration file for {identifier} is outdated or corrupted. If you continue, your {identifier} will be reset.", firstException);
             }
             else if (firstException is SerializationSoftException sse){
-                Program.Reporter.HandleException(ErrorTitle, $"{sse.Errors.Count} error{(sse.Errors.Count == 1 ? " was" : "s were")} encountered while loading the configuration file for "+errorIdentifier+". If you continue, some of your "+errorIdentifier+" will be reset.", true, firstException);
+                OnException($"{sse.Errors.Count} error{(sse.Errors.Count == 1 ? " was" : "s were")} encountered while loading the configuration file for {identifier}. If you continue, some of your {identifier} will be reset.", firstException);
             }
             else if (firstException != null){
-                Program.Reporter.HandleException(ErrorTitle, "Could not open the configuration file for "+errorIdentifier+". If you continue, your "+errorIdentifier+" will be reset.", true, firstException);
+                OnException($"Could not open the configuration file for {identifier}. If you continue, your {identifier} will be reset.", firstException);
             }
         }
 
@@ -68,9 +66,9 @@ namespace TweetDuck.Configuration.Instance{
 
                 Serializer.Write(filenameMain, Instance);
             }catch(SerializationSoftException e){
-                Program.Reporter.HandleException(ErrorTitle, $"{e.Errors.Count} error{(e.Errors.Count == 1 ? " was" : "s were")} encountered while saving the configuration file for "+errorIdentifier+".", true, e);
+                OnException($"{e.Errors.Count} error{(e.Errors.Count == 1 ? " was" : "s were")} encountered while saving the configuration file for {identifier}.", e);
             }catch(Exception e){
-                Program.Reporter.HandleException(ErrorTitle, "Could not save the configuration file for "+errorIdentifier+".", true, e);
+                OnException($"Could not save the configuration file for {identifier}.", e);
             }
         }
 
@@ -82,10 +80,10 @@ namespace TweetDuck.Configuration.Instance{
                     Serializer.Write(filenameMain, Instance.ConstructWithDefaults<T>());
                     LoadInternal(false);
                 }catch(Exception e){
-                    Program.Reporter.HandleException(ErrorTitle, "Could not regenerate the configuration file for "+errorIdentifier+".", true, e);
+                    OnException($"Could not regenerate the configuration file for {identifier}.", e);
                 }
             }catch(Exception e){
-                Program.Reporter.HandleException(ErrorTitle, "Could not reload the configuration file for "+errorIdentifier+".", true, e);
+                OnException($"Could not reload the configuration file for {identifier}.", e);
             }
         }
 
@@ -94,11 +92,15 @@ namespace TweetDuck.Configuration.Instance{
                 File.Delete(filenameMain);
                 File.Delete(filenameBackup);
             }catch(Exception e){
-                Program.Reporter.HandleException(ErrorTitle, "Could not delete configuration files to reset "+errorIdentifier+".", true, e);
+                OnException($"Could not delete configuration files to reset {identifier}.", e);
                 return;
             }
             
             Reload();
         }
+
+        private static void OnException(string message, Exception e){
+            App.ErrorHandler.HandleException("Configuration Error", message, true, e);
+        }
     }
 }

lib/TweetLib.Core/Features/Configuration/IConfigInstance.cs

@@ -1,5 +1,5 @@
-namespace TweetDuck.Configuration.Instance{
+namespace TweetLib.Core.Features.Configuration{
-    interface IConfigInstance<out T>{
+    public interface IConfigInstance<out T>{
         T Instance { get; }
 
         void Save();

lib/TweetLib.Core/Features/Configuration/IConfigManager.cs

@@ -0,0 +1,6 @@
+namespace TweetLib.Core.Features.Configuration{
+    public interface IConfigManager{
+        void TriggerProgramRestartRequested();
+        IConfigInstance<BaseConfig> GetInstanceInfo(BaseConfig instance);
+    }
+}

lib/TweetLib.Core/Features/Plugins/Config/IPluginConfig.cs

@@ -1,12 +1,13 @@
 using System;
 using System.Collections.Generic;
-using TweetDuck.Plugins.Events;
+using TweetLib.Core.Features.Plugins.Events;
-
-namespace TweetDuck.Plugins{
-    interface IPluginConfig{
-        IEnumerable<string> DisabledPlugins { get; }
 
+namespace TweetLib.Core.Features.Plugins.Config{
+    public interface IPluginConfig{
         event EventHandler<PluginChangedStateEventArgs> PluginChangedState;
+
+        IEnumerable<string> DisabledPlugins { get; }
+        void Reset(IEnumerable<string> newDisabledPlugins);
         
         void SetEnabled(Plugin plugin, bool enabled);
         bool IsEnabled(Plugin plugin);

lib/TweetLib.Core/Features/Plugins/Config/PluginConfigInstance.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using TweetLib.Core.Features.Configuration;
+
+namespace TweetLib.Core.Features.Plugins.Config{
+    public sealed class PluginConfigInstance<T> : IConfigInstance<T> where T : BaseConfig, IPluginConfig{
+        public T Instance { get; }
+
+        private readonly string filename;
+
+        public PluginConfigInstance(string filename, T instance){
+            this.filename = filename;
+            this.Instance = instance;
+        }
+
+        public void Load(){
+            try{
+                using var reader = new StreamReader(new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read), Encoding.UTF8);
+                string line = reader.ReadLine();
+
+                if (line == "#Disabled"){
+                    HashSet<string> newDisabled = new HashSet<string>();
+
+                    while((line = reader.ReadLine()) != null){
+                        newDisabled.Add(line);
+                    }
+
+                    Instance.Reset(newDisabled);
+                }
+            }catch(FileNotFoundException){
+            }catch(DirectoryNotFoundException){
+            }catch(Exception e){
+                OnException("Could not read the plugin configuration file. If you continue, the list of disabled plugins will be reset to default.", e);
+            }
+        }
+
+        public void Save(){
+            try{
+                using var writer = new StreamWriter(new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.None), Encoding.UTF8);
+                writer.WriteLine("#Disabled");
+
+                foreach(string identifier in Instance.DisabledPlugins){
+                    writer.WriteLine(identifier);
+                }
+            }catch(Exception e){
+                OnException("Could not save the plugin configuration file.", e);
+            }
+        }
+
+        public void Reload(){
+            Load();
+        }
+
+        public void Reset(){
+            try{
+                File.Delete(filename);
+                Instance.Reset(Instance.ConstructWithDefaults<T>().DisabledPlugins);
+            }catch(Exception e){
+                OnException("Could not delete the plugin configuration file.", e);
+                return;
+            }
+            
+            Reload();
+        }
+
+        private static void OnException(string message, Exception e){
+            App.ErrorHandler.HandleException("Plugin Configuration Error", message, true, e);
+        }
+    }
+}

lib/TweetLib.Core/Features/Plugins/Enums/PluginEnvironment.cs

@@ -4,15 +4,15 @@ using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 
-namespace TweetDuck.Plugins.Enums{
+namespace TweetLib.Core.Features.Plugins.Enums{
     [Flags]
-    enum PluginEnvironment{
+    public enum PluginEnvironment{
         None = 0,
         Browser = 1,
         Notification = 2
     }
 
-    static class PluginEnvironmentExtensions{
+    public static class PluginEnvironmentExtensions{
         public static IEnumerable<PluginEnvironment> Values{
             get{
                 yield return PluginEnvironment.Browser;
@@ -24,7 +24,7 @@ namespace TweetDuck.Plugins.Enums{
             return environment == PluginEnvironment.Browser;
         }
 
-        public static string GetPluginScriptFile(this PluginEnvironment environment){
+        public static string? GetPluginScriptFile(this PluginEnvironment environment){
             switch(environment){
                 case PluginEnvironment.Browser: return "browser.js";
                 case PluginEnvironment.Notification: return "notification.js";
@@ -73,7 +73,7 @@ namespace TweetDuck.Plugins.Enums{
                     return true;
                 }
                 else{
-                    value = default(T);
+                    value = default;
                     return false;
                 }
             }

lib/TweetLib.Core/Features/Plugins/Enums/PluginFolder.cs

@@ -0,0 +1,5 @@
+namespace TweetLib.Core.Features.Plugins.Enums{
+    public enum PluginFolder{
+        Root, Data
+    }
+}

lib/TweetLib.Core/Features/Plugins/Enums/PluginGroup.cs

@@ -1,9 +1,9 @@
-namespace TweetDuck.Plugins.Enums{
+namespace TweetLib.Core.Features.Plugins.Enums{
-    enum PluginGroup{
+    public enum PluginGroup{
         Official, Custom
     }
 
-    static class PluginGroupExtensions{
+    public static class PluginGroupExtensions{
         public static string GetIdentifierPrefix(this PluginGroup group){
             switch(group){
                 case PluginGroup.Official: return "official/";

lib/TweetLib.Core/Features/Plugins/Events/PluginChangedStateEventArgs.cs

@@ -1,7 +1,7 @@
 using System;
 
-namespace TweetDuck.Plugins.Events{
+namespace TweetLib.Core.Features.Plugins.Events{
-    sealed class PluginChangedStateEventArgs : EventArgs{
+    public sealed class PluginChangedStateEventArgs : EventArgs{
         public Plugin Plugin { get; }
         public bool IsEnabled { get; }
 

lib/TweetLib.Core/Features/Plugins/Events/PluginErrorEventArgs.cs

@@ -1,8 +1,8 @@
 using System;
 using System.Collections.Generic;
 
-namespace TweetDuck.Plugins.Events{
+namespace TweetLib.Core.Features.Plugins.Events{
-    sealed class PluginErrorEventArgs : EventArgs{
+    public sealed class PluginErrorEventArgs : EventArgs{
         public bool HasErrors => Errors.Count > 0;
 
         public IList<string> Errors { get; }

lib/TweetLib.Core/Features/Plugins/Plugin.cs

@@ -1,10 +1,10 @@
 using System;
 using System.IO;
-using TweetDuck.Plugins.Enums;
+using TweetLib.Core.Features.Plugins.Enums;
 
-namespace TweetDuck.Plugins{
+namespace TweetLib.Core.Features.Plugins{
-    sealed class Plugin{
+    public sealed class Plugin{
-        private static readonly Version AppVersion = new Version(Program.VersionTag);
+        private static readonly Version AppVersion = new Version(Lib.VersionTag);
 
         public string Identifier { get; }
         public PluginGroup Group { get; }
@@ -62,7 +62,7 @@ namespace TweetDuck.Plugins{
 
         public string GetScriptPath(PluginEnvironment environment){
             if (Environments.HasFlag(environment)){
-                string file = environment.GetPluginScriptFile();
+                string? file = environment.GetPluginScriptFile();
                 return file != null ? Path.Combine(pathRoot, file) : string.Empty;
             }
             else{
@@ -124,7 +124,7 @@ namespace TweetDuck.Plugins{
         public sealed class Builder{
             private static readonly Version DefaultRequiredVersion = new Version(0, 0, 0, 0);
 
-            public string Name             { get; set; }
+            public string Name             { get; set; } = string.Empty;
             public string Description      { get; set; } = string.Empty;
             public string Author           { get; set; } = "(anonymous)";
             public string Version          { get; set; } = string.Empty;
@@ -144,7 +144,7 @@ namespace TweetDuck.Plugins{
                 this.group = group;
                 this.pathRoot = pathRoot;
                 this.pathData = pathData;
-                this.identifier = group.GetIdentifierPrefix()+name;
+                this.identifier = group.GetIdentifierPrefix() + name;
             }
 
             public void AddEnvironment(PluginEnvironment environment){

lib/TweetLib.Core/Features/Plugins/PluginLoader.cs

@@ -2,40 +2,35 @@
 using System.IO;
 using System.Linq;
 using System.Text;
-using TweetDuck.Plugins.Enums;
+using TweetLib.Core.Features.Plugins.Enums;
 
-namespace TweetDuck.Plugins{
+namespace TweetLib.Core.Features.Plugins{
-    static class PluginLoader{
+    public static class PluginLoader{
         private static readonly string[] EndTag = { "[END]" };
 
-        public static Plugin FromFolder(string path, PluginGroup group){
+        public static Plugin FromFolder(string name, string pathRoot, string pathData, PluginGroup group){
-            string name = Path.GetFileName(path);
+            Plugin.Builder builder = new Plugin.Builder(group, name, pathRoot, pathData);
 
-            if (string.IsNullOrEmpty(name)){
+            foreach(var environment in Directory.EnumerateFiles(pathRoot, "*.js", SearchOption.TopDirectoryOnly).Select(Path.GetFileName).Select(EnvironmentFromFileName)){
-                throw new ArgumentException("Could not extract directory name from path: "+path);
+                builder.AddEnvironment(environment);
-            }
-            
-            Plugin.Builder builder = new Plugin.Builder(group, name, path, Path.Combine(Program.PluginDataPath, group.GetIdentifierPrefix(), name));
-
-            foreach(string file in Directory.EnumerateFiles(path, "*.js", SearchOption.TopDirectoryOnly).Select(Path.GetFileName)){
-                builder.AddEnvironment(PluginEnvironmentExtensions.Values.FirstOrDefault(env => file.Equals(env.GetPluginScriptFile(), StringComparison.Ordinal)));
             }
 
-            string metaFile = Path.Combine(path, ".meta");
+            string metaFile = Path.Combine(pathRoot, ".meta");
 
             if (!File.Exists(metaFile)){
                 throw new ArgumentException("Plugin is missing a .meta file");
             }
             
-            string currentTag = null, currentContents = string.Empty;
+            string? currentTag = null;
+            string currentContents = string.Empty;
 
             foreach(string line in File.ReadAllLines(metaFile, Encoding.UTF8).Concat(EndTag).Select(line => line.TrimEnd()).Where(line => line.Length > 0)){
-                if (line[0] == '[' && line[line.Length-1] == ']'){
+                if (line[0] == '[' && line[line.Length - 1] == ']'){
                     if (currentTag != null){
                         SetProperty(builder, currentTag, currentContents);
                     }
 
-                    currentTag = line.Substring(1, line.Length-2).ToUpper();
+                    currentTag = line.Substring(1, line.Length - 2).ToUpper();
                     currentContents = string.Empty;
 
                     if (line.Equals(EndTag[0])){
@@ -43,16 +38,20 @@ namespace TweetDuck.Plugins{
                     }
                 }
                 else if (currentTag != null){
-                    currentContents = currentContents.Length == 0 ? line : currentContents+Environment.NewLine+line;
+                    currentContents = currentContents.Length == 0 ? line : currentContents + Environment.NewLine + line;
                 }
                 else{
-                    throw new FormatException("Missing metadata tag before value: "+line);
+                    throw new FormatException($"Missing metadata tag before value: {line}");
                 }
             }
 
             return builder.BuildAndSetup();
         }
 
+        private static PluginEnvironment EnvironmentFromFileName(string file){
+            return PluginEnvironmentExtensions.Values.FirstOrDefault(env => file.Equals(env.GetPluginScriptFile(), StringComparison.Ordinal));
+        }
+
         private static void SetProperty(Plugin.Builder builder, string tag, string value){
             switch(tag){
                 case "NAME":          builder.Name = value; break;
@@ -62,8 +61,8 @@ namespace TweetDuck.Plugins{
                 case "WEBSITE":       builder.Website = value; break;
                 case "CONFIGFILE":    builder.ConfigFile = value; break;
                 case "CONFIGDEFAULT": builder.ConfigDefault = value; break;
-                case "REQUIRES":      builder.RequiredVersion = Version.TryParse(value, out Version version) ? version : throw new FormatException("Invalid required minimum version: "+value); break;
+                case "REQUIRES":      builder.RequiredVersion = Version.TryParse(value, out Version version) ? version : throw new FormatException($"Invalid required minimum version: {value}"); break;
-                default: throw new FormatException("Invalid metadata tag: "+tag);
+                default: throw new FormatException($"Invalid metadata tag: {tag}");
             }
         }
     }

lib/TweetLib.Core/Features/Plugins/PluginScriptGenerator.cs

@@ -1,10 +1,11 @@
 using System.Linq;
-using TweetDuck.Plugins.Enums;
+using TweetLib.Core.Features.Plugins.Config;
+using TweetLib.Core.Features.Plugins.Enums;
 
-namespace TweetDuck.Plugins{
+namespace TweetLib.Core.Features.Plugins{
-    static class PluginScriptGenerator{
+    public static class PluginScriptGenerator{
         public static string GenerateConfig(IPluginConfig config){
-            return "window.TD_PLUGINS.disabled = ["+string.Join(",", config.DisabledPlugins.Select(id => $"\"{id}\""))+"]";
+            return "window.TD_PLUGINS.disabled = [" + string.Join(",", config.DisabledPlugins.Select(id => '"' + id + '"')) + "]";
         }
 
         public static string GeneratePlugin(string pluginIdentifier, string pluginContents, int pluginToken, PluginEnvironment environment){

lib/TweetLib.Core/Features/Updates/IUpdateCheckClient.cs

@@ -0,0 +1,8 @@
+using System.Threading.Tasks;
+
+namespace TweetLib.Core.Features.Updates{
+    public interface IUpdateCheckClient{
+        bool CanCheck { get; }
+        Task<UpdateInfo> Check();
+    }
+}

lib/TweetLib.Core/Features/Updates/UpdateCheckEventArgs.cs

@@ -1,8 +1,8 @@
 using System;
-using TweetDuck.Data;
+using TweetLib.Core.Data;
 
-namespace TweetDuck.Updates{
+namespace TweetLib.Core.Features.Updates{
-    sealed class UpdateCheckEventArgs : EventArgs{
+    public sealed class UpdateCheckEventArgs : EventArgs{
         public int EventId { get; }
         public Result<UpdateInfo> Result { get; }
         

lib/TweetLib.Core/Features/Updates/UpdateDownloadStatus.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Updates{
+namespace TweetLib.Core.Features.Updates{
     public enum UpdateDownloadStatus{
         None = 0,
         InProgress,

lib/TweetLib.Core/Features/Updates/UpdateHandler.cs

@@ -1,34 +1,38 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using TweetDuck.Data;
+using System.Timers;
-using Timer = System.Windows.Forms.Timer;
+using TweetLib.Core.Data;
+using Timer = System.Timers.Timer;
 
-namespace TweetDuck.Updates{
+namespace TweetLib.Core.Features.Updates{
-    sealed class UpdateHandler : IDisposable{
+    public sealed class UpdateHandler : IDisposable{
         public const int CheckCodeUpdatesDisabled = -1;
         
-        private readonly UpdateCheckClient client;
+        private readonly IUpdateCheckClient client;
         private readonly TaskScheduler scheduler;
         private readonly Timer timer;
         
         public event EventHandler<UpdateCheckEventArgs> CheckFinished;
         private ushort lastEventId;
 
-        public UpdateHandler(string installerFolder){
+        public UpdateHandler(IUpdateCheckClient client, TaskScheduler scheduler){
-            this.client = new UpdateCheckClient(installerFolder);
+            this.client = client;
-            this.scheduler = TaskScheduler.FromCurrentSynchronizationContext();
+            this.scheduler = scheduler;
             
-            this.timer = new Timer();
+            this.timer = new Timer{
-            this.timer.Tick += timer_Tick;
+                AutoReset = false,
+                Enabled = false
+            };
+
+            this.timer.Elapsed += timer_Elapsed;
         }
 
         public void Dispose(){
             timer.Dispose();
         }
 
-        private void timer_Tick(object sender, EventArgs e){
+        private void timer_Elapsed(object sender, ElapsedEventArgs e){
-            timer.Stop();
             Check(false);
         }
 
@@ -39,9 +43,9 @@ namespace TweetDuck.Updates{
 
             timer.Stop();
 
-            if (Program.Config.User.EnableUpdateCheck){
+            if (client.CanCheck){
                 DateTime now = DateTime.Now;
-                TimeSpan nextHour = now.AddSeconds(60*(60-now.Minute)-now.Second)-now;
+                TimeSpan nextHour = now.AddSeconds(60 * (60 - now.Minute) - now.Second) - now;
 
                 if (nextHour.TotalMinutes < 15){
                     nextHour = nextHour.Add(TimeSpan.FromHours(1));
@@ -53,7 +57,7 @@ namespace TweetDuck.Updates{
         }
 
         public int Check(bool force){
-            if (Program.Config.User.EnableUpdateCheck || force){
+            if (client.CanCheck || force){
                 int nextEventId = unchecked(++lastEventId);
                 Task<UpdateInfo> checkTask = client.Check();
 

lib/TweetLib.Core/Features/Updates/UpdateInfo.cs

@@ -1,20 +1,20 @@
 using System;
 using System.IO;
 using System.Net;
-using TweetDuck.Core.Utils;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Updates{
+namespace TweetLib.Core.Features.Updates{
-    sealed class UpdateInfo{
+    public sealed class UpdateInfo{
         public string VersionTag { get; }
         public string ReleaseNotes { get; }
         public string InstallerPath { get; }
         
         public UpdateDownloadStatus DownloadStatus { get; private set; }
-        public Exception DownloadError { get; private set; }
+        public Exception? DownloadError { get; private set; }
 
         private readonly string downloadUrl;
         private readonly string installerFolder;
-        private WebClient currentDownload;
+        private WebClient? currentDownload;
 
         public UpdateInfo(string versionTag, string releaseNotes, string downloadUrl, string installerFolder){
             this.downloadUrl = downloadUrl;
@@ -22,11 +22,11 @@ namespace TweetDuck.Updates{
             
             this.VersionTag = versionTag;
             this.ReleaseNotes = releaseNotes;
-            this.InstallerPath = Path.Combine(installerFolder, $"TweetDuck.{versionTag}.exe");
+            this.InstallerPath = Path.Combine(installerFolder, $"{Lib.BrandName}.{versionTag}.exe");
         }
 
         public void BeginSilentDownload(){
-            if (WindowsUtils.FileExistsAndNotEmpty(InstallerPath)){
+            if (FileUtils.FileExistsAndNotEmpty(InstallerPath)){
                 DownloadStatus = UpdateDownloadStatus.Done;
                 return;
             }
@@ -48,7 +48,9 @@ namespace TweetDuck.Updates{
                     return;
                 }
 
-                currentDownload = BrowserUtils.DownloadFileAsync(downloadUrl, InstallerPath, null, () => {
+                WebClient client = WebUtils.NewClient($"{Lib.BrandName} {Lib.VersionTag}");
+
+                client.DownloadFileCompleted += WebUtils.FileDownloadCallback(InstallerPath, () => {
                     DownloadStatus = UpdateDownloadStatus.Done;
                     currentDownload = null;
                 }, e => {
@@ -56,6 +58,8 @@ namespace TweetDuck.Updates{
                     DownloadStatus = UpdateDownloadStatus.Failed;
                     currentDownload = null;
                 });
+
+                client.DownloadFileAsync(new Uri(downloadUrl), InstallerPath);
             }
         }
 

lib/TweetLib.Core/Lib.cs

@@ -0,0 +1,24 @@
+using System.Globalization;
+using System.Threading;
+
+namespace TweetLib.Core{
+    public static class Lib{
+        public const string BrandName = "TweetDuck";
+        public const string VersionTag = "1.18";
+
+        public static CultureInfo Culture { get; private set; }
+
+        public static void Initialize(App.Builder app){
+            Culture = CultureInfo.CurrentCulture;
+
+            Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
+            CultureInfo.DefaultThreadCurrentCulture = CultureInfo.InvariantCulture;
+            
+            #if DEBUG
+            CultureInfo.DefaultThreadCurrentUICulture = Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-us"); // force english exceptions
+            #endif
+
+            app.Initialize();
+        }
+    }
+}

lib/TweetLib.Core/Serialization/Converters/ClrTypeConverter.cs

@@ -0,0 +1,55 @@
+using System;
+
+namespace TweetLib.Core.Serialization.Converters{
+    internal sealed class ClrTypeConverter : ITypeConverter{
+        public static ITypeConverter Instance { get; } = new ClrTypeConverter();
+
+        private ClrTypeConverter(){}
+
+        bool ITypeConverter.TryWriteType(Type type, object value, out string? converted){
+            switch(Type.GetTypeCode(type)){
+                case TypeCode.Boolean:
+                    converted = value.ToString();
+                    return true;
+
+                case TypeCode.Int32:
+                    converted = ((int)value).ToString(); // cast required for enums
+                    return true;
+
+                case TypeCode.String:
+                    converted = value?.ToString();
+                    return true;
+
+                default:
+                    converted = null;
+                    return false;
+            }
+        }
+
+        bool ITypeConverter.TryReadType(Type type, string value, out object? converted){
+            switch(Type.GetTypeCode(type)){
+                case TypeCode.Boolean:
+                    if (bool.TryParse(value, out bool b)){
+                        converted = b;
+                        return true;
+                    }
+                    else goto default;
+
+                case TypeCode.Int32:
+                    if (int.TryParse(value, out int i)){
+                        converted = i;
+                        return true;
+                    }
+                    else goto default;
+
+                case TypeCode.String:
+                    converted = value;
+                    return true;
+
+                default:
+                    converted = null;
+                    return false;
+            }
+        }
+    }
+}

lib/TweetLib.Core/Serialization/Converters/SingleTypeConverter.cs

@@ -1,11 +1,11 @@
 using System;
 
-namespace TweetDuck.Data.Serialization{
+namespace TweetLib.Core.Serialization.Converters{
-    sealed class SingleTypeConverter<T> : ITypeConverter{
+    public sealed class SingleTypeConverter<T> : ITypeConverter{
         public Func<T, string> ConvertToString { get; set; }
         public Func<string, T> ConvertToObject { get; set; }
 
-        bool ITypeConverter.TryWriteType(Type type, object value, out string converted){
+        bool ITypeConverter.TryWriteType(Type type, object value, out string? converted){
             try{
                 converted = ConvertToString((T)value);
                 return true;
@@ -15,7 +15,7 @@ namespace TweetDuck.Data.Serialization{
             }
         }
 
-        bool ITypeConverter.TryReadType(Type type, string value, out object converted){
+        bool ITypeConverter.TryReadType(Type type, string value, out object? converted){
             try{
                 converted = ConvertToObject(value);
                 return true;

lib/TweetLib.Core/Serialization/FileSerializer.cs

@@ -4,10 +4,11 @@ using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Text;
-using TweetDuck.Core.Utils;
+using TweetLib.Core.Serialization.Converters;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Data.Serialization{
+namespace TweetLib.Core.Serialization{
-    sealed class FileSerializer<T>{
+    public sealed class FileSerializer<T>{
         private const string NewLineReal = "\r\n";
         private const string NewLineCustom = "\r~\n";
 
@@ -49,8 +50,6 @@ namespace TweetDuck.Data.Serialization{
             return build.Append(data.Substring(index)).ToString();
         }
 
-        private static readonly ITypeConverter BasicSerializerObj = new BasicTypeConverter();
-        
         private readonly Dictionary<string, PropertyInfo> props;
         private readonly Dictionary<Type, ITypeConverter> converters;
 
@@ -66,7 +65,7 @@ namespace TweetDuck.Data.Serialization{
         public void Write(string file, T obj){
             LinkedList<string> errors = new LinkedList<string>();
 
-            WindowsUtils.CreateDirectoryForFile(file);
+            FileUtils.CreateDirectoryForFile(file);
 
             using(StreamWriter writer = new StreamWriter(new FileStream(file, FileMode.Create, FileAccess.Write, FileShare.None))){
                 foreach(KeyValuePair<string, PropertyInfo> prop in props){
@@ -74,10 +73,10 @@ namespace TweetDuck.Data.Serialization{
                     object value = prop.Value.GetValue(obj);
                     
                     if (!converters.TryGetValue(type, out ITypeConverter serializer)){
-                        serializer = BasicSerializerObj;
+                        serializer = ClrTypeConverter.Instance;
                     }
 
-                    if (serializer.TryWriteType(type, value, out string converted)){
+                    if (serializer.TryWriteType(type, value, out string? converted)){
                         if (converted != null){
                             writer.Write(prop.Key);
                             writer.Write(' ');
@@ -142,10 +141,10 @@ namespace TweetDuck.Data.Serialization{
 
                 if (props.TryGetValue(property, out PropertyInfo info)){
                     if (!converters.TryGetValue(info.PropertyType, out ITypeConverter serializer)){
-                        serializer = BasicSerializerObj;
+                        serializer = ClrTypeConverter.Instance;
                     }
 
-                    if (serializer.TryReadType(info.PropertyType, value, out object converted)){
+                    if (serializer.TryReadType(info.PropertyType, value, out object? converted)){
                         info.SetValue(obj, converted);
                     }
                     else{
@@ -165,53 +164,5 @@ namespace TweetDuck.Data.Serialization{
             }catch(FileNotFoundException){
             }catch(DirectoryNotFoundException){}
         }
-
-        private sealed class BasicTypeConverter : ITypeConverter{
-            bool ITypeConverter.TryWriteType(Type type, object value, out string converted){
-                switch(Type.GetTypeCode(type)){
-                    case TypeCode.Boolean:
-                        converted = value.ToString();
-                        return true;
-
-                    case TypeCode.Int32:
-                        converted = ((int)value).ToString(); // cast required for enums
-                        return true;
-
-                    case TypeCode.String:
-                        converted = value?.ToString();
-                        return true;
-
-                    default:
-                        converted = null;
-                        return false;
-                }
-            }
-
-            bool ITypeConverter.TryReadType(Type type, string value, out object converted){
-                switch(Type.GetTypeCode(type)){
-                    case TypeCode.Boolean:
-                        if (bool.TryParse(value, out bool b)){
-                            converted = b;
-                            return true;
-                        }
-                        else goto default;
-
-                    case TypeCode.Int32:
-                        if (int.TryParse(value, out int i)){
-                            converted = i;
-                            return true;
-                        }
-                        else goto default;
-
-                    case TypeCode.String:
-                        converted = value;
-                        return true;
-
-                    default:
-                        converted = null;
-                        return false;
-                }
-            }
-        }
     }
 }

lib/TweetLib.Core/Serialization/ITypeConverter.cs

@@ -0,0 +1,8 @@
+using System;
+
+namespace TweetLib.Core.Serialization{
+    public interface ITypeConverter{
+        bool TryWriteType(Type type, object value, out string? converted);
+        bool TryReadType(Type type, string value, out object? converted);
+    }
+}

lib/TweetLib.Core/Serialization/SerializationSoftException.cs

@@ -1,8 +1,8 @@
 using System;
 using System.Collections.Generic;
 
-namespace TweetDuck.Data.Serialization{
+namespace TweetLib.Core.Serialization{
-    sealed class SerializationSoftException : Exception{
+    public sealed class SerializationSoftException : Exception{
         public IList<string> Errors { get; }
 
         public SerializationSoftException(IList<string> errors) : base(string.Join(Environment.NewLine, errors)){

lib/TweetLib.Core/TweetLib.Core.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <Platforms>x86</Platforms>
+    <LangVersion>8.0</LangVersion>
+    <NullableContextOptions>enable</NullableContextOptions>
+  </PropertyGroup>
+
+</Project>

lib/TweetLib.Core/Utils/FileUtils.cs

@@ -0,0 +1,39 @@
+using System;
+using System.IO;
+
+namespace TweetLib.Core.Utils{
+    public static class FileUtils{
+        public static void CreateDirectoryForFile(string file){
+            string dir = Path.GetDirectoryName(file);
+
+            if (dir == null){
+                throw new ArgumentException("Invalid file path: "+file);
+            }
+            else if (dir.Length > 0){
+                Directory.CreateDirectory(dir);
+            }
+        }
+
+        public static bool CheckFolderWritePermission(string path){
+            string testFile = Path.Combine(path, ".test");
+
+            try{
+                Directory.CreateDirectory(path);
+
+                using(File.Create(testFile)){}
+                File.Delete(testFile);
+                return true;
+            }catch{
+                return false;
+            }
+        }
+
+        public static bool FileExistsAndNotEmpty(string path){
+            try{
+                return new FileInfo(path).Length > 0;
+            }catch{
+                return false;
+            }
+        }
+    }
+}

lib/TweetLib.Core/Utils/LocaleUtils.cs

@@ -3,8 +3,8 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 
-namespace TweetDuck.Core.Utils{
+namespace TweetLib.Core.Utils{
-    static class LocaleUtils{
+    public static class LocaleUtils{
         // https://cs.chromium.org/chromium/src/third_party/hunspell_dictionaries/
         public static IEnumerable<Item> SpellCheckLanguages { get; } = new List<string>{
             "af-ZA", "bg-BG", "ca-ES", "cs-CZ", "da-DK", "de-DE",
@@ -30,11 +30,19 @@ namespace TweetDuck.Core.Utils{
 
         public sealed class Item : IComparable<Item>{
             public string Code { get; }
-            public CultureInfo Info { get; }
 
-            public Item(string code, string alt = null){
+            private string Name => info?.NativeName ?? Code;
+
+            private readonly CultureInfo? info;
+
+            public Item(string code, string? alt = null){
                 this.Code = code;
-                this.Info = CultureInfo.GetCultureInfo(alt ?? code);
+
+                try{
+                    this.info = CultureInfo.GetCultureInfo(alt ?? code);
+                }catch(CultureNotFoundException){
+                    // ignore
+                }
             }
 
             public override bool Equals(object obj){
@@ -46,12 +54,16 @@ namespace TweetDuck.Core.Utils{
             }
 
             public override string ToString(){
-                string capitalizedName = Info.TextInfo.ToTitleCase(Info.NativeName);
+                if (info == null){
-                return Info.DisplayName == Info.NativeName ? capitalizedName : $"{capitalizedName}, {Info.DisplayName}";
+                    return Code;
+                }
+
+                string capitalizedName = info.TextInfo.ToTitleCase(info.NativeName);
+                return info.DisplayName == info.NativeName ? capitalizedName : $"{capitalizedName}, {info.DisplayName}";
             }
 
             public int CompareTo(Item other){
-                return string.Compare(Info.NativeName, other.Info.NativeName, false, CultureInfo.InvariantCulture);
+                return string.Compare(Name, other.Name, false, CultureInfo.InvariantCulture);
             }
         }
     }

lib/TweetLib.Core/Utils/StringUtils.cs

@@ -2,8 +2,8 @@
 using System.Linq;
 using System.Text.RegularExpressions;
 
-namespace TweetDuck.Core.Utils{
+namespace TweetLib.Core.Utils{
-    static class StringUtils{
+    public static class StringUtils{
         public static readonly string[] EmptyArray = new string[0];
 
         public static string ExtractBefore(string str, char search, int startIndex = 0){
@@ -23,7 +23,7 @@ namespace TweetDuck.Core.Utils{
             return Regex.Replace(str, @"[a-zA-Z]", match => {
                 int code = match.Value[0];
                 int start = code <= 90 ? 65 : 97;
-                return ((char)(start+(code-start+13)%26)).ToString();
+                return ((char)(start + (code - start + 13) % 26)).ToString();
             });
         }
 

lib/TweetLib.Core/Utils/UrlUtils.cs

@@ -0,0 +1,29 @@
+using System;
+using System.IO;
+
+namespace TweetLib.Core.Utils{
+    public static class UrlUtils{
+        private const string TwitterTrackingUrl = "t.co";
+
+        public enum CheckResult{
+            Invalid, Tracking, Fine
+        }
+
+        public static CheckResult Check(string url){
+            if (Uri.TryCreate(url, UriKind.Absolute, out Uri uri)){
+                string scheme = uri.Scheme;
+
+                if (scheme == Uri.UriSchemeHttps || scheme == Uri.UriSchemeHttp || scheme == Uri.UriSchemeFtp || scheme == Uri.UriSchemeMailto){
+                    return uri.Host == TwitterTrackingUrl ? CheckResult.Tracking : CheckResult.Fine;
+                }
+            }
+
+            return CheckResult.Invalid;
+        }
+
+        public static string? GetFileNameFromUrl(string url){
+            string file = Path.GetFileName(new Uri(url).AbsolutePath);
+            return string.IsNullOrEmpty(file) ? null : file;
+        }
+    }
+}

lib/TweetLib.Core/Utils/WebUtils.cs

@@ -0,0 +1,44 @@
+using System;
+using System.ComponentModel;
+using System.IO;
+using System.Net;
+
+namespace TweetLib.Core.Utils{
+    public static class WebUtils{
+        private static bool HasMicrosoftBeenBroughtTo2008Yet;
+
+        private static void EnsureTLS12(){
+            if (!HasMicrosoftBeenBroughtTo2008Yet){
+                ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12;
+                ServicePointManager.SecurityProtocol &= ~(SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11);
+                HasMicrosoftBeenBroughtTo2008Yet = true;
+            }
+        }
+
+        public static WebClient NewClient(string userAgent){
+            EnsureTLS12();
+
+            WebClient client = new WebClient{ Proxy = null };
+            client.Headers[HttpRequestHeader.UserAgent] = userAgent;
+            return client;
+        }
+
+        public static AsyncCompletedEventHandler FileDownloadCallback(string file, Action? onSuccess, Action<Exception>? onFailure){
+            return (sender, args) => {
+                if (args.Cancelled){
+                    try{
+                        File.Delete(file);
+                    }catch{
+                        // didn't want it deleted anyways
+                    }
+                }
+                else if (args.Error != null){
+                    onFailure?.Invoke(args.Error);
+                }
+                else{
+                    onSuccess?.Invoke();
+                }
+            };
+        }
+    }
+}

lib/TweetTest.System/Configuration/TestUserConfig.cs

@@ -1,9 +1,4 @@
-using System;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
-using System.Diagnostics.Contracts;
-using System.IO;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using TweetDuck.Configuration;
-using TweetDuck.Core.Other;
 
 namespace TweetTest.Configuration{
     [TestClass]

lib/TweetTest.System/Data/TestCombinedFileStream.cs

@@ -2,7 +2,7 @@
 using System.IO;
 using System.Linq;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using TweetDuck.Data;
+using TweetLib.Core.Data;
 
 namespace TweetTest.Data{
     [TestClass]

lib/TweetTest.System/Data/TestFileSerializer.cs

@@ -1,11 +1,13 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using TweetDuck.Data.Serialization;
+using TweetLib.Core.Serialization;
 
 namespace TweetTest.Data{
     [TestClass]
     public class TestFileSerializer : TestIO{
+        [SuppressMessage("ReSharper", "UnusedMember.Local")]
         private enum TestEnum{
             A, B, C, D, E
         }

lib/TweetTest.System/TweetTest.System.csproj

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props')" />
+  <Import Project="..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TweetTest</RootNamespace>
     <AssemblyName>TweetTest.System</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{3AC096D0-A1C2-E12C-1390-A8335801FDAB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
@@ -57,6 +57,10 @@
       <Project>{2389a7cd-e0d3-4706-8294-092929a33a2d}</Project>
       <Name>TweetDuck</Name>
     </ProjectReference>
+    <ProjectReference Include="..\TweetLib.Core\TweetLib.Core.csproj">
+      <Project>{93ba3cb4-a812-4949-b07d-8d393fb38937}</Project>
+      <Name>TweetLib.Core</Name>
+    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
@@ -85,7 +89,7 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Net.Compilers.2.9.0\build\Microsoft.Net.Compilers.props'))" />
+    <Error Condition="!Exists('..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Net.Compilers.3.0.0\build\Microsoft.Net.Compilers.props'))" />
   </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

lib/TweetTest.System/packages.config

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Microsoft.Net.Compilers" version="2.9.0" targetFramework="net452" developmentDependency="true" />
+  <package id="Microsoft.Net.Compilers" version="3.0.0" targetFramework="net472" developmentDependency="true" />
 </packages>