Plugin prerequisites - Added UI for installing/removing prerequisites

Plugin settings - Added button to reload plugin from disk
Confirm dialogs - Made cancel text optional so you can hide the button

src/Artemis.Core/Exceptions/ArtemisPluginPrerequisiteException.cs

@@ -0,0 +1,38 @@
+using System;
+
+namespace Artemis.Core
+{
+    /// <summary>
+    ///     An exception thrown when a plugin prerequisite-related error occurs
+    /// </summary>
+    public class ArtemisPluginPrerequisiteException : Exception
+    {
+        internal ArtemisPluginPrerequisiteException(Plugin plugin, PluginPrerequisite? pluginPrerequisite)
+        {
+            Plugin = plugin;
+            PluginPrerequisite = pluginPrerequisite;
+        }
+
+        internal ArtemisPluginPrerequisiteException(Plugin plugin, PluginPrerequisite? pluginPrerequisite, string message) : base(message)
+        {
+            Plugin = plugin;
+            PluginPrerequisite = pluginPrerequisite;
+        }
+
+        internal ArtemisPluginPrerequisiteException(Plugin plugin, PluginPrerequisite? pluginPrerequisite, string message, Exception inner) : base(message, inner)
+        {
+            Plugin = plugin;
+            PluginPrerequisite = pluginPrerequisite;
+        }
+
+        /// <summary>
+        ///     Gets the plugin the error is related to
+        /// </summary>
+        public Plugin Plugin { get; }
+
+        /// <summary>
+        ///     Gets the plugin prerequisite the error is related to
+        /// </summary>
+        public PluginPrerequisite? PluginPrerequisite { get; }
+    }
+}

src/Artemis.Core/Plugins/Plugin.cs

@@ -125,6 +125,14 @@ namespace Artemis.Core
             return Info.ToString();
         }
 
+        /// <summary>
+        ///     Determines whether the prerequisites of this plugin are met
+        /// </summary>
+        public bool ArePrerequisitesMet()
+        {
+            return Prerequisites.All(p => p.IsMet());
+        }
+
         /// <summary>
         ///     Occurs when the plugin is enabled
         /// </summary>

src/Artemis.Core/Plugins/Prerequisites/PluginPrerequisite.cs

@@ -123,7 +123,7 @@ namespace Artemis.Core
         ///     Called to determine whether the prerequisite is met
         /// </summary>
         /// <returns><see langword="true" /> if the prerequisite is met; otherwise <see langword="false" /></returns>
-        public abstract Task<bool> IsMet();
+        public abstract bool IsMet();
 
         /// <summary>
         ///     Called before installation starts

src/Artemis.Core/Plugins/Prerequisites/PluginPrerequisiteAction.cs

@@ -10,6 +10,8 @@ namespace Artemis.Core
     public abstract class PluginPrerequisiteAction : CorePropertyChanged
     {
         private bool _progressIndeterminate;
+        private bool _showProgressBar;
+        private bool _showSubProgressBar;
         private string? _status;
         private bool _subProgressIndeterminate;
 
@@ -56,6 +58,24 @@ namespace Artemis.Core
             set => SetAndNotify(ref _subProgressIndeterminate, value);
         }
 
+        /// <summary>
+        ///     Gets or sets a boolean indicating whether the progress bar should be shown
+        /// </summary>
+        public bool ShowProgressBar
+        {
+            get => _showProgressBar;
+            set => SetAndNotify(ref _showProgressBar, value);
+        }
+
+        /// <summary>
+        ///     Gets or sets a boolean indicating whether the sub progress bar should be shown
+        /// </summary>
+        public bool ShowSubProgressBar
+        {
+            get => _showSubProgressBar;
+            set => SetAndNotify(ref _showSubProgressBar, value);
+        }
+
         /// <summary>
         ///     Gets or sets the progress of the action (0 to 100)
         /// </summary>

src/Artemis.Core/Plugins/Prerequisites/PrerequisiteAction/CopyFolderAction.cs

@@ -21,6 +21,9 @@ namespace Artemis.Core
         {
             Source = source;
             Target = target;
+
+            ShowProgressBar = true;
+            ShowSubProgressBar = true;
         }
 
         /// <summary>

src/Artemis.Core/Plugins/Prerequisites/PrerequisiteAction/DeleteFileAction.cs

@@ -0,0 +1,44 @@
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Artemis.Core
+{
+    /// <summary>
+    ///     Represents a plugin prerequisite action that deletes a file
+    /// </summary>
+    public class DeleteFileAction : PluginPrerequisiteAction
+    {
+        /// <summary>
+        ///     Creates a new instance of a copy folder action
+        /// </summary>
+        /// <param name="name">The name of the action</param>
+        /// <param name="target">The target folder to delete recursively</param>
+        public DeleteFileAction(string name, string target) : base(name)
+        {
+            Target = target;
+            ProgressIndeterminate = true;
+        }
+
+        /// <summary>
+        ///     Gets or sets the target directory
+        /// </summary>
+        public string Target { get; }
+
+        /// <inheritdoc />
+        public override async Task Execute(CancellationToken cancellationToken)
+        {
+            ShowProgressBar = true;
+            Status = $"Removing {Target}";
+
+            await Task.Run(() =>
+            {
+                if (File.Exists(Target))
+                    File.Delete(Target);
+            }, cancellationToken);
+
+            ShowProgressBar = false;
+            Status = $"Removed {Target}";
+        }
+    }
+}

src/Artemis.Core/Plugins/Prerequisites/PrerequisiteAction/DeleteFolderAction.cs

@@ -0,0 +1,49 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Artemis.Core
+{
+    /// <summary>
+    ///     Represents a plugin prerequisite action that recursively deletes a folder
+    /// </summary>
+    public class DeleteFolderAction : PluginPrerequisiteAction
+    {
+        /// <summary>
+        ///     Creates a new instance of a copy folder action
+        /// </summary>
+        /// <param name="name">The name of the action</param>
+        /// <param name="target">The target folder to delete recursively</param>
+        public DeleteFolderAction(string name, string target) : base(name)
+        {
+            if (Enum.GetValues<Environment.SpecialFolder>().Select(Environment.GetFolderPath).Contains(target))
+                throw new ArtemisCoreException($"Cannot delete special folder {target}, silly goose.");
+
+            Target = target;
+            ProgressIndeterminate = true;
+        }
+
+        /// <summary>
+        ///     Gets or sets the target directory
+        /// </summary>
+        public string Target { get; }
+
+        /// <inheritdoc />
+        public override async Task Execute(CancellationToken cancellationToken)
+        {
+            ShowProgressBar = true;
+            Status = $"Removing {Target}";
+
+            await Task.Run(() =>
+            {
+                if (Directory.Exists(Target))
+                    Directory.Delete(Target, true);
+            }, cancellationToken);
+
+            ShowProgressBar = false;
+            Status = $"Removed {Target}";
+        }
+    }
+}

src/Artemis.Core/Plugins/Prerequisites/PrerequisiteAction/WriteBytesToFileAction.cs

@@ -0,0 +1,62 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Artemis.Core
+{
+    /// <summary>
+    ///     Represents a plugin prerequisite action that copies a folder
+    /// </summary>
+    public class WriteBytesToFileAction : PluginPrerequisiteAction
+    {
+        /// <summary>
+        ///     Creates a new instance of a copy folder action
+        /// </summary>
+        /// <param name="name">The name of the action</param>
+        /// <param name="target">The target file to write to (will be created if needed)</param>
+        /// <param name="content">The contents to write</param>
+        public WriteBytesToFileAction(string name, string target, byte[] content) : base(name)
+        {
+            Target = target;
+            ByteContent = content ?? throw new ArgumentNullException(nameof(content));
+        }
+
+        /// <summary>
+        ///     Gets or sets the target file
+        /// </summary>
+        public string Target { get; }
+
+        /// <summary>
+        ///     Gets or sets a boolean indicating whether or not to append to the file if it exists already, if set to
+        ///     <see langword="false" /> the file will be deleted and recreated
+        /// </summary>
+        public bool Append { get; set; } = false;
+
+        /// <summary>
+        ///     Gets the bytes that will be written
+        /// </summary>
+        public byte[] ByteContent { get; }
+
+        /// <inheritdoc />
+        public override async Task Execute(CancellationToken cancellationToken)
+        {
+            string outputDir = Path.GetDirectoryName(Target)!;
+            Utilities.CreateAccessibleDirectory(outputDir);
+
+            ShowProgressBar = true;
+            Status = $"Writing to {Path.GetFileName(Target)}...";
+
+            if (!Append && File.Exists(Target))
+                File.Delete(Target);
+            
+            await using Stream fileStream = File.OpenWrite(Target);
+            await using MemoryStream sourceStream = new(ByteContent);
+            await sourceStream.CopyToAsync(sourceStream.Length, fileStream, Progress, cancellationToken);
+
+            ShowProgressBar = false;
+            Status = $"Finished writing to {Path.GetFileName(Target)}";
+        }
+    }
+}

src/Artemis.Core/Plugins/Prerequisites/PrerequisiteAction/WriteStringToFileAction.cs

@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -8,7 +9,7 @@ namespace Artemis.Core
     /// <summary>
     ///     Represents a plugin prerequisite action that copies a folder
     /// </summary>
-    public class WriteToFileAction : PluginPrerequisiteAction
+    public class WriteStringToFileAction : PluginPrerequisiteAction
     {
         /// <summary>
         ///     Creates a new instance of a copy folder action
@@ -16,22 +17,12 @@ namespace Artemis.Core
         /// <param name="name">The name of the action</param>
         /// <param name="target">The target file to write to (will be created if needed)</param>
         /// <param name="content">The contents to write</param>
-        public WriteToFileAction(string name, string target, string content) : base(name)
-        {
-            Target = target ?? throw new ArgumentNullException(nameof(target));
-            Content = content ?? throw new ArgumentNullException(nameof(content));
-        }
-
-        /// <summary>
-        ///     Creates a new instance of a copy folder action
-        /// </summary>
-        /// <param name="name">The name of the action</param>
-        /// <param name="target">The target file to write to (will be created if needed)</param>
-        /// <param name="content">The contents to write</param>
-        public WriteToFileAction(string name, string target, byte[] content) : base(name)
+        public WriteStringToFileAction(string name, string target, string content) : base(name)
         {
             Target = target;
-            ByteContent = content ?? throw new ArgumentNullException(nameof(content));
+            Content = content ?? throw new ArgumentNullException(nameof(content));
+
+            ProgressIndeterminate = true;
         }
 
         /// <summary>
@@ -40,30 +31,31 @@ namespace Artemis.Core
         public string Target { get; }
 
         /// <summary>
-        ///     Gets the contents that will be written
+        ///     Gets or sets a boolean indicating whether or not to append to the file if it exists already, if set to
+        ///     <see langword="false" /> the file will be deleted and recreated
         /// </summary>
-        public string? Content { get; }
+        public bool Append { get; set; } = false;
 
         /// <summary>
-        ///     Gets the bytes that will be written
+        ///     Gets the string that will be written
         /// </summary>
-        public byte[]? ByteContent { get; }
-        
+        public string Content { get; }
+
         /// <inheritdoc />
         public override async Task Execute(CancellationToken cancellationToken)
         {
             string outputDir = Path.GetDirectoryName(Target)!;
             Utilities.CreateAccessibleDirectory(outputDir);
 
-            ProgressIndeterminate = true;
+            ShowProgressBar = true;
             Status = $"Writing to {Path.GetFileName(Target)}...";
 
-            if (Content != null)
+            if (Append)
+                await File.AppendAllTextAsync(Target, Content, cancellationToken);
+            else
                 await File.WriteAllTextAsync(Target, Content, cancellationToken);
-            else if (ByteContent != null)
-                await File.WriteAllBytesAsync(Target, ByteContent, cancellationToken);
 
-            ProgressIndeterminate = false;
+            ShowProgressBar = false;
             Status = $"Finished writing to {Path.GetFileName(Target)}";
         }
     }

src/Artemis.Core/Services/PluginManagementService.cs

@@ -241,7 +241,16 @@ namespace Artemis.Core.Services
             }
 
             foreach (Plugin plugin in _plugins.Where(p => p.Entity.IsEnabled))
-                EnablePlugin(plugin, false, ignorePluginLock);
+            {
+                try
+                {
+                    EnablePlugin(plugin, false, ignorePluginLock);
+                }
+                catch (ArtemisPluginPrerequisiteException)
+                {
+                    _logger.Warning("Skipped enabling plugin {plugin} because not all prerequisites are met", plugin);
+                }
+            }
 
             _logger.Debug("Enabled {count} plugin(s)", _plugins.Count(p => p.IsEnabled));
             // ReSharper restore InconsistentlySynchronizedField
@@ -372,6 +381,9 @@ namespace Artemis.Core.Services
                 return;
             }
 
+            if (!plugin.ArePrerequisitesMet())
+                throw new ArtemisPluginPrerequisiteException(plugin, null, "Cannot enable a plugin whose prerequisites aren't all met");
+
             // Create the Ninject child kernel and load the module
             plugin.Kernel = new ChildKernel(_kernel, new PluginModule(plugin));
             OnPluginEnabling(new PluginEventArgs(plugin));

src/Artemis.UI.Shared/Screens/Dialogs/ConfirmDialogView.xaml

@@ -1,14 +1,18 @@
-<UserControl x:ClassModifier="internal"
-             x:Class="Artemis.UI.Shared.Screens.Dialogs.ConfirmDialogView"
+<UserControl
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:s="https://github.com/canton7/Stylet"
              xmlns:dialogs="clr-namespace:Artemis.UI.Shared.Screens.Dialogs"
+             xmlns:Shared="clr-namespace:Artemis.UI.Shared" x:ClassModifier="internal"
+             x:Class="Artemis.UI.Shared.Screens.Dialogs.ConfirmDialogView"
              mc:Ignorable="d"
              d:DesignHeight="163.274" d:DesignWidth="254.425"
-             d:DataContext="{d:DesignInstance dialogs:ConfirmDialogViewModel}">
+             d:DataContext="{d:DesignInstance {x:Type dialogs:ConfirmDialogViewModel}}">
+    <UserControl.Resources>
+        <Shared:NullToVisibilityConverter x:Key="NullToVisibilityConverter"/>
+    </UserControl.Resources>
     <StackPanel Margin="16">
         <TextBlock Style="{StaticResource MaterialDesignHeadline6TextBlock}" Text="{Binding Header}" TextWrapping="Wrap" />
         <TextBlock Style="{StaticResource MaterialDesignSubtitle1TextBlock}" 
@@ -22,7 +26,8 @@
                     Focusable="False"
                     IsCancel="True"
                     Command="{s:Action Cancel}"
-                    Content="{Binding CancelText}" />
+                    Content="{Binding CancelText}" 
+                    Visibility="{Binding CancelText, Converter={StaticResource NullToVisibilityConverter}, Mode=OneWay}" />
             <Button x:Name="ConfirmButton"
                     Style="{StaticResource MaterialDesignFlatButton}"
                     IsDefault="True"

src/Artemis.UI.Shared/Services/Dialog/DialogService.cs

@@ -61,28 +61,30 @@ namespace Artemis.UI.Shared.Services
             return await ShowDialog(identifier, GetBestKernel().Get<T>(parameters));
         }
 
-        public async Task<bool> ShowConfirmDialog(string header, string text, string confirmText = "Confirm", string cancelText = "Cancel")
+        public async Task<bool> ShowConfirmDialog(string header, string text, string confirmText = "Confirm", string? cancelText = "Cancel")
         {
+            if (confirmText == null) throw new ArgumentNullException(nameof(confirmText));
             IParameter[] arguments =
             {
                 new ConstructorArgument("header", header),
                 new ConstructorArgument("text", text),
                 new ConstructorArgument("confirmText", confirmText.ToUpper()),
-                new ConstructorArgument("cancelText", cancelText.ToUpper())
+                new ConstructorArgument("cancelText", cancelText?.ToUpper())
             };
             object? result = await ShowDialog<ConfirmDialogViewModel>(arguments);
             return result is bool booleanResult && booleanResult;
         }
 
-        public async Task<bool> ShowConfirmDialogAt(string identifier, string header, string text, string confirmText = "Confirm", string cancelText = "Cancel")
+        public async Task<bool> ShowConfirmDialogAt(string identifier, string header, string text, string confirmText = "Confirm", string? cancelText = "Cancel")
         {
             if (identifier == null) throw new ArgumentNullException(nameof(identifier));
+            if (confirmText == null) throw new ArgumentNullException(nameof(confirmText));
             IParameter[] arguments =
             {
                 new ConstructorArgument("header", header),
                 new ConstructorArgument("text", text),
                 new ConstructorArgument("confirmText", confirmText.ToUpper()),
-                new ConstructorArgument("cancelText", cancelText.ToUpper())
+                new ConstructorArgument("cancelText", cancelText?.ToUpper())
             };
             object? result = await ShowDialogAt<ConfirmDialogViewModel>(identifier, arguments);
             return result is bool booleanResult && booleanResult;

src/Artemis.UI/Artemis.UI.csproj

@@ -359,6 +359,9 @@
 		<Page Update="DefaultTypes\PropertyInput\FloatRangePropertyInputView.xaml">
 			<SubType>Designer</SubType>
 		</Page>
+		<Page Update="Screens\Plugins\PluginPrerequisitesUninstallDialogView.xaml">
+		  <XamlRuntime>$(DefaultXamlRuntime)</XamlRuntime>
+		</Page>
 		<Page Update="Screens\ProfileEditor\Dialogs\ProfileEditView.xaml">
 			<XamlRuntime>$(DefaultXamlRuntime)</XamlRuntime>
 		</Page>

src/Artemis.UI/Ninject/Factories/IVMFactory.cs

@@ -98,7 +98,7 @@ namespace Artemis.UI.Ninject.Factories
 
     public interface IPrerequisitesVmFactory : IVmFactory
     {
-        PluginPrerequisiteViewModel PluginPrerequisiteViewModel(PluginPrerequisite pluginPrerequisite);
+        PluginPrerequisiteViewModel PluginPrerequisiteViewModel(PluginPrerequisite pluginPrerequisite, bool uninstall);
     }
 
     // TODO: Move these two

src/Artemis.UI/Screens/Plugins/PluginPrerequisiteActionView.xaml

@@ -12,12 +12,12 @@
     <StackPanel>
         <ProgressBar Value="{Binding Action.Progress.Percentage, Mode=OneWay}"
                      IsIndeterminate="{Binding Action.ProgressIndeterminate, Mode=OneWay}"
-                     Visibility="{Binding ShowProgressBar, Converter={x:Static s:BoolToVisibilityConverter.Instance}, Mode=OneWay}"
+                     Visibility="{Binding Action.ShowProgressBar, Converter={x:Static s:BoolToVisibilityConverter.Instance}, Mode=OneWay}"
                      materialDesign:TransitionAssist.DisableTransitions="True"
                      Margin="0 10"/>
         <ProgressBar Value="{Binding Action.SubProgress.Percentage, Mode=OneWay}"
                      IsIndeterminate="{Binding Action.SubProgressIndeterminate, Mode=OneWay}"
-                     Visibility="{Binding ShowSubProgressBar, Converter={x:Static s:BoolToVisibilityConverter.Instance}, Mode=OneWay}"
+                     Visibility="{Binding Action.ShowSubProgressBar, Converter={x:Static s:BoolToVisibilityConverter.Instance}, Mode=OneWay}"
                      materialDesign:TransitionAssist.DisableTransitions="True" 
                      Margin="0 10"/>
 

src/Artemis.UI/Screens/Plugins/PluginPrerequisiteActionViewModel.cs

@@ -7,8 +7,7 @@ namespace Artemis.UI.Screens.Plugins
 {
     public class PluginPrerequisiteActionViewModel : Screen
     {
-        private bool _showProgressBar;
-        private bool _showSubProgressBar;
+
 
         public PluginPrerequisiteActionViewModel(PluginPrerequisiteAction action)
         {
@@ -16,56 +15,5 @@ namespace Artemis.UI.Screens.Plugins
         }
 
         public PluginPrerequisiteAction Action { get; }
-
-        public bool ShowProgressBar
-        {
-            get => _showProgressBar;
-            set => SetAndNotify(ref _showProgressBar, value);
-        }
-
-        public bool ShowSubProgressBar
-        {
-            get => _showSubProgressBar;
-            set => SetAndNotify(ref _showSubProgressBar, value);
-        }
-
-        private void ActionOnPropertyChanged(object? sender, PropertyChangedEventArgs e)
-        {
-            if (e.PropertyName == nameof(Action.ProgressIndeterminate) || e.PropertyName == nameof(Action.SubProgressIndeterminate))
-                UpdateProgress();
-        }
-
-        private void ProgressReported(object? sender, EventArgs e)
-        {
-            UpdateProgress();
-        }
-        
-        private void UpdateProgress()
-        {
-            ShowSubProgressBar = Action.SubProgress.Percentage != 0 || Action.SubProgressIndeterminate;
-            ShowProgressBar = ShowSubProgressBar || Action.Progress.Percentage != 0 || Action.ProgressIndeterminate;
-        }
-
-        #region Overrides of Screen
-
-        /// <inheritdoc />
-        protected override void OnInitialActivate()
-        {
-            Action.Progress.ProgressReported += ProgressReported;
-            Action.SubProgress.ProgressReported += ProgressReported;
-            Action.PropertyChanged += ActionOnPropertyChanged;
-            base.OnInitialActivate();
-        }
-
-        /// <inheritdoc />
-        protected override void OnClose()
-        {
-            Action.Progress.ProgressReported -= ProgressReported;
-            Action.SubProgress.ProgressReported -= ProgressReported;
-            Action.PropertyChanged -= ActionOnPropertyChanged;
-            base.OnClose();
-        }
-
-        #endregion
     }
 }

src/Artemis.UI/Screens/Plugins/PluginPrerequisiteViewModel.cs

@@ -12,14 +12,16 @@ namespace Artemis.UI.Screens.Plugins
 {
     public class PluginPrerequisiteViewModel : Conductor<PluginPrerequisiteActionViewModel>.Collection.OneActive
     {
+        private readonly bool _uninstall;
         private readonly ICoreService _coreService;
         private readonly IDialogService _dialogService;
         private bool _installing;
         private bool _uninstalling;
         private bool _isMet;
 
-        public PluginPrerequisiteViewModel(PluginPrerequisite pluginPrerequisite, ICoreService coreService, IDialogService dialogService)
+        public PluginPrerequisiteViewModel(PluginPrerequisite pluginPrerequisite, bool uninstall, ICoreService coreService, IDialogService dialogService)
         {
+            _uninstall = uninstall;
             _coreService = coreService;
             _dialogService = dialogService;
 
@@ -77,7 +79,7 @@ namespace Artemis.UI.Screens.Plugins
             finally
             {
                 Installing = false;
-                IsMet = await PluginPrerequisite.IsMet();
+                IsMet = PluginPrerequisite.IsMet();
             }
         }
 
@@ -100,11 +102,11 @@ namespace Artemis.UI.Screens.Plugins
             finally
             {
                 Uninstalling = false;
-                IsMet = await PluginPrerequisite.IsMet();
+                IsMet = PluginPrerequisite.IsMet();
             }
         }
 
-        private void PluginPrerequisiteOnPropertyChanged(object? sender, PropertyChangedEventArgs e)
+        private void PluginPrerequisiteOnPropertyChanged(object sender, PropertyChangedEventArgs e)
         {
             if (e.PropertyName == nameof(PluginPrerequisite.CurrentAction))
                 ActivateCurrentAction();
@@ -129,10 +131,12 @@ namespace Artemis.UI.Screens.Plugins
         protected override void OnInitialActivate()
         {
             PluginPrerequisite.PropertyChanged -= PluginPrerequisiteOnPropertyChanged;
-            Task.Run(async () => IsMet = await PluginPrerequisite.IsMet());
+            // Could be slow so take it off of the UI thread
+            Task.Run(() => IsMet = PluginPrerequisite.IsMet());
 
-            Items.AddRange(PluginPrerequisite.InstallActions.Select(a => new PluginPrerequisiteActionViewModel(a)));
-            Items.AddRange(PluginPrerequisite.UninstallActions.Select(a => new PluginPrerequisiteActionViewModel(a)));
+            Items.AddRange(!_uninstall
+                ? PluginPrerequisite.InstallActions.Select(a => new PluginPrerequisiteActionViewModel(a))
+                : PluginPrerequisite.UninstallActions.Select(a => new PluginPrerequisiteActionViewModel(a)));
 
             base.OnInitialActivate();
         }

src/Artemis.UI/Screens/Plugins/PluginPrerequisitesInstallDialogView.xaml

@@ -1,4 +1,4 @@
-<UserControl x:Class="Artemis.UI.Screens.Plugins.PluginPrerequisitesDialogView"
+<UserControl x:Class="Artemis.UI.Screens.Plugins.PluginPrerequisitesInstallDialogView"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
@@ -9,7 +9,7 @@
              xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
              mc:Ignorable="d"
              d:DesignHeight="450" d:DesignWidth="800"
-             d:DataContext="{d:DesignInstance local:PluginPrerequisitesDialogViewModel}">
+             d:DataContext="{d:DesignInstance local:PluginPrerequisitesInstallDialogViewModel}">
     <UserControl.Resources>
         <shared:NullToVisibilityConverter x:Key="NullToVisibilityConverter"/>
     </UserControl.Resources>

src/Artemis.UI/Screens/Plugins/PluginPrerequisitesInstallDialogViewModel.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -11,28 +12,30 @@ using Stylet;
 
 namespace Artemis.UI.Screens.Plugins
 {
-    public class PluginPrerequisitesDialogViewModel : DialogViewModelBase
+    public class PluginPrerequisitesInstallDialogViewModel : DialogViewModelBase
     {
+        private readonly IDialogService _dialogService;
         private PluginPrerequisiteViewModel _activePrerequisite;
         private bool _canInstall;
         private bool _isFinished;
         private CancellationTokenSource _tokenSource;
 
-        public PluginPrerequisitesDialogViewModel(object pluginOrFeature, IPrerequisitesVmFactory prerequisitesVmFactory)
+        public PluginPrerequisitesInstallDialogViewModel(object pluginOrFeature, IPrerequisitesVmFactory prerequisitesVmFactory, IDialogService dialogService)
         {
+            _dialogService = dialogService;
             // Constructor overloading doesn't work very well with Kernel.Get<T> :(
             if (pluginOrFeature is Plugin plugin)
             {
                 Plugin = plugin;
-                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(plugin.Prerequisites.Select(prerequisitesVmFactory.PluginPrerequisiteViewModel));
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(plugin.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, false)));
             }
             else if (pluginOrFeature is PluginFeature feature)
             {
                 Feature = feature;
-                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(feature.Prerequisites.Select(prerequisitesVmFactory.PluginPrerequisiteViewModel));
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(feature.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, false)));
             }
             else
-                throw new ArtemisUIException($"Expected plugin or feature to be passed to {nameof(PluginPrerequisitesDialogViewModel)}");
+                throw new ArtemisUIException($"Expected plugin or feature to be passed to {nameof(PluginPrerequisitesInstallDialogViewModel)}");
 
             foreach (PluginPrerequisiteViewModel pluginPrerequisiteViewModel in Prerequisites)
                 pluginPrerequisiteViewModel.ConductWith(this);
@@ -81,11 +84,11 @@ namespace Artemis.UI.Screens.Plugins
             {
                 foreach (PluginPrerequisiteViewModel pluginPrerequisiteViewModel in Prerequisites)
                 {
-                    ActivePrerequisite = pluginPrerequisiteViewModel;
-                    ActivePrerequisite.IsMet = await ActivePrerequisite.PluginPrerequisite.IsMet();
-                    if (ActivePrerequisite.IsMet)
+                    pluginPrerequisiteViewModel.IsMet = pluginPrerequisiteViewModel.PluginPrerequisite.IsMet();
+                    if (pluginPrerequisiteViewModel.IsMet)
                         continue;
 
+                    ActivePrerequisite = pluginPrerequisiteViewModel;
                     await ActivePrerequisite.Install(_tokenSource.Token);
 
                     // Wait after the task finished for the user to process what happened
@@ -94,7 +97,21 @@ namespace Artemis.UI.Screens.Plugins
                 }
 
                 if (Prerequisites.All(p => p.IsMet))
+                {
                     IsFinished = true;
+                    return;
+                }
+
+                // This shouldn't be happening and the experience isn't very nice for the user (too lazy to make a nice UI for such an edge case)
+                // but at least give some feedback
+                Session?.Close(false);
+                await _dialogService.ShowConfirmDialog(
+                    "Plugin prerequisites",
+                    "All prerequisites are installed but some still aren't met. \r\nPlease try again or contact the plugin creator.",
+                    "Confirm",
+                    ""
+                );
+                await _dialogService.ShowDialog<PluginPrerequisitesInstallDialogViewModel>(new Dictionary<string, object> {{"pluginOrFeature", Plugin}});
             }
             catch (OperationCanceledException)
             {
@@ -118,8 +135,10 @@ namespace Artemis.UI.Screens.Plugins
         /// <inheritdoc />
         protected override void OnInitialActivate()
         {
+            CanInstall = false;
+            Task.Run(() => CanInstall = !Plugin.ArePrerequisitesMet());
+
             base.OnInitialActivate();
-            CanInstall = Prerequisites.Any(p => !p.IsMet);
         }
 
         #endregion

src/Artemis.UI/Screens/Plugins/PluginPrerequisitesUninstallDialogView.xaml

@@ -0,0 +1,125 @@
+<UserControl x:Class="Artemis.UI.Screens.Plugins.PluginPrerequisitesUninstallDialogView"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:local="clr-namespace:Artemis.UI.Screens.Plugins"
+             xmlns:s="https://github.com/canton7/Stylet"
+             xmlns:shared="clr-namespace:Artemis.UI.Shared;assembly=Artemis.UI.Shared"
+             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
+             mc:Ignorable="d"
+             d:DesignHeight="450" d:DesignWidth="800"
+             d:DataContext="{d:DesignInstance local:PluginPrerequisitesUninstallDialogViewModel}">
+    <UserControl.Resources>
+        <shared:NullToVisibilityConverter x:Key="NullToVisibilityConverter"/>
+    </UserControl.Resources>
+    <Grid Margin="16">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition MinHeight="150"/>
+            <RowDefinition Height="Auto"/>
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="300" />
+            <ColumnDefinition Width="500" />
+        </Grid.ColumnDefinitions>
+        <TextBlock Grid.Row="0" Style="{StaticResource MaterialDesignHeadline6TextBlock}" TextWrapping="Wrap" Margin="0 0 0 20">
+            Plugin prerequisites
+        </TextBlock>
+
+        <ListBox Grid.Row="1"
+                 Grid.Column="0"
+                 ItemsSource="{Binding Prerequisites}"
+                 SelectedItem="{Binding ActivePrerequisite, Mode=OneWay}"
+                 HorizontalContentAlignment="Stretch">
+
+            <ListBox.ItemTemplate>
+                <DataTemplate DataType="{x:Type local:PluginPrerequisiteViewModel}">
+                    <Border Padding="8" BorderThickness="0 0 0 1" BorderBrush="{DynamicResource MaterialDesignDivider}" VerticalAlignment="Stretch">
+                        <Grid>
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="Auto" />
+                                <ColumnDefinition Width="*" />
+                            </Grid.ColumnDefinitions>
+
+                            <ToggleButton VerticalAlignment="Center"
+                                          Style="{StaticResource MaterialDesignActionToggleButton}"
+                                          Focusable="False"
+                                          IsHitTestVisible="False"
+                                          IsChecked="{Binding IsMet}">
+                                <ToggleButton.Content>
+                                    <Border Background="#E74C4C" Width="32" Height="32">
+                                        <materialDesign:PackIcon Kind="Close" VerticalAlignment="Center" HorizontalAlignment="Center" />
+                                    </Border>
+                                </ToggleButton.Content>
+                                <materialDesign:ToggleButtonAssist.OnContent>
+                                    <materialDesign:PackIcon Kind="Check" />
+                                </materialDesign:ToggleButtonAssist.OnContent>
+                            </ToggleButton>
+
+                            <StackPanel Margin="8 0 0 0" Grid.Column="1" VerticalAlignment="Stretch">
+                                <TextBlock FontWeight="Bold" Text="{Binding PluginPrerequisite.Name}" TextWrapping="Wrap" />
+                                <TextBlock Text="{Binding PluginPrerequisite.Description}" TextWrapping="Wrap" />
+                            </StackPanel>
+                        </Grid>
+                    </Border>
+                </DataTemplate>
+            </ListBox.ItemTemplate>
+        </ListBox>
+
+        <ContentControl Grid.Row="0"
+                        Grid.RowSpan="2"
+                        Grid.Column="1"
+                        s:View.Model="{Binding ActivePrerequisite}"
+                        VerticalContentAlignment="Stretch"
+                        HorizontalContentAlignment="Stretch"
+                        Margin="10 0"
+                        IsTabStop="False"
+                        Visibility="{Binding ActivePrerequisite, Converter={StaticResource NullToVisibilityConverter}}"/>
+
+        <TextBlock Grid.Row="1" 
+                   Grid.Column="1" 
+                   Style="{StaticResource MaterialDesignBody1TextBlock}" 
+                   TextWrapping="Wrap"
+                   Margin="10 0"
+                   Visibility="{Binding ActivePrerequisite, Converter={StaticResource NullToVisibilityConverter}, ConverterParameter=Inverted}">
+            This plugin installed certain prerequisites in order to function. <LineBreak /><LineBreak />
+            In this screen you can chose to remove these, this will mean the plugin will no longer work until you reinstall the prerequisites.
+        </TextBlock>
+
+        <StackPanel Grid.Row="2"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="2"
+                    Orientation="Horizontal"
+                    HorizontalAlignment="Right"
+                    Margin="0 8 0 0"
+                    Visibility="{Binding IsFinished, Converter={x:Static s:BoolToVisibilityConverter.InverseInstance}, Mode=OneWay}">
+            <Button Style="{StaticResource MaterialDesignFlatButton}"
+                    Focusable="False"
+                    IsCancel="True"
+                    Command="{s:Action Cancel}"
+                    Content="CANCEL" />
+            <Button x:Name="ConfirmButton"
+                    Style="{StaticResource MaterialDesignFlatButton}"
+                    IsDefault="True"
+                    Focusable="True"
+                    Command="{s:Action Uninstall}"
+                    Content="REMOVE PREREQUISITES" />
+        </StackPanel>
+
+        <StackPanel Grid.Row="2"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="2"
+                    Orientation="Horizontal"
+                    HorizontalAlignment="Right"
+                    Margin="0 8 0 0"
+                    Visibility="{Binding IsFinished, Converter={x:Static s:BoolToVisibilityConverter.Instance}, Mode=OneWay}">
+            <Button Style="{StaticResource MaterialDesignFlatButton}"
+                    Focusable="False"
+                    IsCancel="True"
+                    Command="{s:Action Accept}"
+                    Content="FINISH" />
+        </StackPanel>
+
+    </Grid>
+</UserControl>

src/Artemis.UI/Screens/Plugins/PluginPrerequisitesUninstallDialogViewModel.cs

@@ -0,0 +1,154 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Artemis.Core;
+using Artemis.Core.Services;
+using Artemis.UI.Exceptions;
+using Artemis.UI.Ninject.Factories;
+using Artemis.UI.Shared.Services;
+using MaterialDesignThemes.Wpf;
+using Stylet;
+
+namespace Artemis.UI.Screens.Plugins
+{
+    public class PluginPrerequisitesUninstallDialogViewModel : DialogViewModelBase
+    {
+        private readonly IDialogService _dialogService;
+        private readonly IPluginManagementService _pluginManagementService;
+        private PluginPrerequisiteViewModel _activePrerequisite;
+        private bool _canUninstall;
+        private bool _isFinished;
+        private CancellationTokenSource _tokenSource;
+
+        public PluginPrerequisitesUninstallDialogViewModel(object pluginOrFeature, IPrerequisitesVmFactory prerequisitesVmFactory, IDialogService dialogService,
+            IPluginManagementService pluginManagementService)
+        {
+            _dialogService = dialogService;
+            _pluginManagementService = pluginManagementService;
+
+            // Constructor overloading doesn't work very well with Kernel.Get<T> :(
+            if (pluginOrFeature is Plugin plugin)
+            {
+                Plugin = plugin;
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(plugin.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, true)));
+            }
+            else if (pluginOrFeature is PluginFeature feature)
+            {
+                Feature = feature;
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(feature.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, true)));
+            }
+            else
+                throw new ArtemisUIException($"Expected plugin or feature to be passed to {nameof(PluginPrerequisitesInstallDialogViewModel)}");
+
+            foreach (PluginPrerequisiteViewModel pluginPrerequisiteViewModel in Prerequisites)
+                pluginPrerequisiteViewModel.ConductWith(this);
+        }
+
+
+        public PluginFeature Feature { get; }
+        public Plugin Plugin { get; }
+        public BindableCollection<PluginPrerequisiteViewModel> Prerequisites { get; }
+
+        public PluginPrerequisiteViewModel ActivePrerequisite
+        {
+            get => _activePrerequisite;
+            set => SetAndNotify(ref _activePrerequisite, value);
+        }
+
+        public bool CanUninstall
+        {
+            get => _canUninstall;
+            set => SetAndNotify(ref _canUninstall, value);
+        }
+
+        public bool IsFinished
+        {
+            get => _isFinished;
+            set => SetAndNotify(ref _isFinished, value);
+        }
+
+        #region Overrides of DialogViewModelBase
+
+        /// <inheritdoc />
+        public override void OnDialogClosed(object sender, DialogClosingEventArgs e)
+        {
+            _tokenSource?.Cancel();
+            base.OnDialogClosed(sender, e);
+        }
+
+        #endregion
+
+        public async void Uninstall()
+        {
+            CanUninstall = false;
+
+            _pluginManagementService.DisablePlugin(Plugin, true);
+            _tokenSource = new CancellationTokenSource();
+
+            try
+            {
+                foreach (PluginPrerequisiteViewModel pluginPrerequisiteViewModel in Prerequisites)
+                {
+                    pluginPrerequisiteViewModel.IsMet = pluginPrerequisiteViewModel.PluginPrerequisite.IsMet();
+                    if (!pluginPrerequisiteViewModel.IsMet)
+                        continue;
+
+                    ActivePrerequisite = pluginPrerequisiteViewModel;
+                    await ActivePrerequisite.Uninstall(_tokenSource.Token);
+
+                    // Wait after the task finished for the user to process what happened
+                    if (pluginPrerequisiteViewModel != Prerequisites.Last())
+                        await Task.Delay(1000);
+                }
+
+                if (Prerequisites.All(p => !p.IsMet))
+                {
+                    IsFinished = true;
+                    return;
+                }
+
+                // This shouldn't be happening and the experience isn't very nice for the user (too lazy to make a nice UI for such an edge case)
+                // but at least give some feedback
+                Session?.Close(false);
+                await _dialogService.ShowConfirmDialog(
+                    "Plugin prerequisites",
+                    "The plugin was not able to fully remove all prerequisites. \r\nPlease try again or contact the plugin creator.",
+                    "Confirm",
+                    ""
+                );
+                await _dialogService.ShowDialog<PluginPrerequisitesUninstallDialogViewModel>(new Dictionary<string, object> {{"pluginOrFeature", Plugin}});
+            }
+            catch (OperationCanceledException)
+            {
+                // ignored
+            }
+            finally
+            {
+                CanUninstall = true;
+                _tokenSource.Dispose();
+                _tokenSource = null;
+            }
+        }
+
+        public void Accept()
+        {
+            Session?.Close(true);
+        }
+
+        #region Overrides of Screen
+
+        /// <inheritdoc />
+        protected override void OnInitialActivate()
+        {
+            CanUninstall = false;
+            // Could be slow so take it off of the UI thread
+            Task.Run(() => CanUninstall = Plugin.Prerequisites.Any(p => p.IsMet()));
+
+            base.OnInitialActivate();
+        }
+
+        #endregion
+    }
+}

src/Artemis.UI/Screens/Settings/Tabs/Devices/DeviceSettingsView.xaml

@@ -52,7 +52,7 @@
                 <CheckBox Style="{StaticResource MaterialDesignCheckBox}" IsChecked="{Binding IsDeviceEnabled}">
                     Device enabled
                 </CheckBox>
-                <materialDesign:PopupBox Style="{StaticResource MaterialDesignToolPopupBox}" Padding="2 0 2 0">
+                <materialDesign:PopupBox Style="{StaticResource MaterialDesignToolPopupBox}" Padding="2 0 2 0" Foreground="{StaticResource MaterialDesignBody}">
                     <StackPanel>
                         <Button Command="{s:Action OpenPluginDirectory}">
                             <StackPanel Orientation="Horizontal">

src/Artemis.UI/Screens/Settings/Tabs/Plugins/PluginSettingsTabView.xaml

@@ -49,7 +49,6 @@
 
         <ListBox Grid.Row="1"
                  ItemsSource="{Binding Items}"
-                 materialDesign:RippleAssist.IsDisabled="True"
                  VirtualizingPanel.ScrollUnit="Pixel"
                  HorizontalAlignment="Stretch"
                  HorizontalContentAlignment="Center"

src/Artemis.UI/Screens/Settings/Tabs/Plugins/PluginSettingsView.xaml

@@ -12,6 +12,14 @@
              d:DataContext="{d:DesignInstance devices:PluginSettingsViewModel}"
              mc:Ignorable="d"
              d:DesignHeight="450" d:DesignWidth="800">
+    <UserControl.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary
+                    Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.PopupBox.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </UserControl.Resources>
     <materialDesign:Card Width="900">
         <Grid Margin="8">
             <Grid.ColumnDefinitions>
@@ -61,34 +69,60 @@
             </Grid>
 
 
-            <StackPanel Grid.Row="1"
-                        Grid.Column="0"
-                        VerticalAlignment="Bottom"
-                        Orientation="Horizontal">
-                <Button
-                    VerticalAlignment="Bottom"
-                    Style="{StaticResource MaterialDesignRaisedButton}"
-                    ToolTip="Open the plugins settings window"
-                    Margin="4"
-                    Command="{s:Action OpenSettings}">
+            <StackPanel Grid.Row="1" Grid.Column="0" VerticalAlignment="Bottom" Orientation="Horizontal">
+                <Button VerticalAlignment="Bottom"
+                        Style="{StaticResource MaterialDesignRaisedButton}"
+                        ToolTip="Open the plugins settings window"
+                        Margin="4"
+                        Command="{s:Action OpenSettings}">
                     SETTINGS
                 </Button>
-                <Button
-                    VerticalAlignment="Bottom"
-                    Style="{StaticResource MaterialDesignOutlinedButton}"
-                    ToolTip="Clear plugin settings"
-                    Margin="4"
-                    Command="{s:Action RemoveSettings}">
-                    <materialDesign:PackIcon Kind="DatabaseRemove" />
-                </Button>
-                <Button
-                    VerticalAlignment="Bottom"
-                    Style="{StaticResource MaterialDesignOutlinedButton}"
-                    ToolTip="Remove plugin"
-                    Margin="4"
-                    Command="{s:Action Remove}">
-                    <materialDesign:PackIcon Kind="DeleteForever" />
-                </Button>
+
+                <materialDesign:PopupBox Style="{StaticResource MaterialDesignToolPopupBox}"
+                                         Padding="2 0 2 0"
+                                         Foreground="{StaticResource MaterialDesignBody}"
+                                         IsPopupOpen="{Binding IsSettingsPopupOpen, Mode=TwoWay}">
+                    <StackPanel>
+                        <Button Command="{s:Action OpenPluginDirectory}">
+                            <StackPanel Orientation="Horizontal">
+                                <materialDesign:PackIcon Kind="FolderOpen" Margin="0 0 10 0 " VerticalAlignment="Center" />
+                                <TextBlock VerticalAlignment="Center">Open plugin directory</TextBlock>
+                            </StackPanel>
+                        </Button>
+                        <Button Command="{s:Action Reload}">
+                            <StackPanel Orientation="Horizontal">
+                                <materialDesign:PackIcon Kind="Reload" Margin="0 0 10 0 " VerticalAlignment="Center" />
+                                <TextBlock VerticalAlignment="Center">Reload plugin</TextBlock>
+                            </StackPanel>
+                        </Button>
+                        <Separator />
+                        <Button Command="{s:Action InstallPrerequisites}" >
+                            <StackPanel Orientation="Horizontal">
+                                <materialDesign:PackIcon Kind="CheckAll" Margin="0 0 10 0 " VerticalAlignment="Center" />
+                                <TextBlock VerticalAlignment="Center">Install prerequisites</TextBlock>
+                            </StackPanel>
+                        </Button>
+                        <Button Command="{s:Action RemovePrerequisites}" >
+                            <StackPanel Orientation="Horizontal">
+                                <materialDesign:PackIcon Kind="Delete" Margin="0 0 10 0 " VerticalAlignment="Center" />
+                                <TextBlock VerticalAlignment="Center">Remove prerequisites</TextBlock>
+                            </StackPanel>
+                        </Button>
+                        <Separator />
+                        <Button Command="{s:Action RemoveSettings}" >
+                            <StackPanel Orientation="Horizontal">
+                                <materialDesign:PackIcon Kind="DatabaseRemove" Margin="0 0 10 0 " VerticalAlignment="Center" />
+                                <TextBlock VerticalAlignment="Center">Clear plugin settings</TextBlock>
+                            </StackPanel>
+                        </Button>
+                        <Button Command="{s:Action Remove}">
+                            <StackPanel Orientation="Horizontal">
+                                <materialDesign:PackIcon Kind="DeleteForever" Margin="0 0 10 0 " VerticalAlignment="Center" />
+                                <TextBlock VerticalAlignment="Center">Remove plugin</TextBlock>
+                            </StackPanel>
+                        </Button>
+                    </StackPanel>
+                </materialDesign:PopupBox>
             </StackPanel>
 
 

src/Artemis.UI/Screens/Settings/Tabs/Plugins/PluginSettingsViewModel.cs

@@ -10,23 +10,24 @@ using Artemis.UI.Ninject.Factories;
 using Artemis.UI.Screens.Plugins;
 using Artemis.UI.Shared;
 using Artemis.UI.Shared.Services;
-using MaterialDesignThemes.Wpf;
 using Ninject;
 using Stylet;
-using Constants = Artemis.Core.Constants;
 
 namespace Artemis.UI.Screens.Settings.Tabs.Plugins
 {
     public class PluginSettingsViewModel : Conductor<PluginFeatureViewModel>.Collection.AllActive
     {
+        private readonly ICoreService _coreService;
         private readonly IDialogService _dialogService;
+        private readonly IMessageService _messageService;
         private readonly IPluginManagementService _pluginManagementService;
         private readonly ISettingsVmFactory _settingsVmFactory;
-        private readonly ICoreService _coreService;
-        private readonly IMessageService _messageService;
         private readonly IWindowManager _windowManager;
         private bool _enabling;
         private Plugin _plugin;
+        private bool _isSettingsPopupOpen;
+        private bool _canInstallPrerequisites;
+        private bool _canRemovePrerequisites;
 
         public PluginSettingsViewModel(Plugin plugin,
             ISettingsVmFactory settingsVmFactory,
@@ -70,6 +71,28 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
             set => Task.Run(() => UpdateEnabled(value));
         }
 
+        public bool IsSettingsPopupOpen
+        {
+            get => _isSettingsPopupOpen;
+            set
+            {
+                if (!SetAndNotify(ref _isSettingsPopupOpen, value)) return;
+                CheckPrerequisites();
+            }
+        }
+
+        public bool CanInstallPrerequisites
+        {
+            get => _canInstallPrerequisites;
+            set => SetAndNotify(ref _canInstallPrerequisites, value);
+        }
+
+        public bool CanRemovePrerequisites
+        {
+            get => _canRemovePrerequisites;
+            set => SetAndNotify(ref _canRemovePrerequisites, value);
+        }
+
         public void OpenSettings()
         {
             PluginConfigurationDialog configurationViewModel = (PluginConfigurationDialog) Plugin.ConfigurationDialog;
@@ -88,6 +111,49 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
             }
         }
 
+        public void OpenPluginDirectory()
+        {
+            try
+            {
+                Process.Start(Environment.GetEnvironmentVariable("WINDIR") + @"\explorer.exe", Plugin.Directory.FullName);
+            }
+            catch (Exception e)
+            {
+                _dialogService.ShowExceptionDialog("Welp, we couldn't open the device's plugin folder for you", e);
+            }
+        }
+
+        public async Task Reload()
+        {
+            bool wasEnabled = IsEnabled;
+
+            _pluginManagementService.UnloadPlugin(Plugin);
+            Items.Clear();
+
+            Plugin = _pluginManagementService.LoadPlugin(Plugin.Directory);
+            foreach (PluginFeatureInfo pluginFeatureInfo in Plugin.Features)
+                Items.Add(_settingsVmFactory.CreatePluginFeatureViewModel(pluginFeatureInfo, false));
+
+            if (wasEnabled)
+                await UpdateEnabled(true);
+        }
+
+        public async Task InstallPrerequisites()
+        {
+            if (Plugin.Prerequisites.Any())
+                await ShowPrerequisitesDialog(false);
+        }
+
+        public async Task RemovePrerequisites()
+        {
+            if (Plugin.Prerequisites.Any(p => p.UninstallActions.Any()))
+            {
+                await ShowPrerequisitesDialog(true);
+                NotifyOfPropertyChange(nameof(IsEnabled));
+                NotifyOfPropertyChange(nameof(CanOpenSettings));
+            }
+        }
+        
         public async Task RemoveSettings()
         {
             bool confirmed = await _dialogService.ShowConfirmDialog("Clear plugin settings", "Are you sure you want to clear the settings of this plugin?");
@@ -109,7 +175,7 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
 
         public async Task Remove()
         {
-            bool confirmed = await _dialogService.ShowConfirmDialog("Delete plugin", "Are you sure you want to delete this plugin?");
+            bool confirmed = await _dialogService.ShowConfirmDialog("Remove plugin", "Are you sure you want to remove this plugin?");
             if (!confirmed)
                 return;
 
@@ -170,10 +236,10 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
                 }
 
                 // Check if all prerequisites are met async
-                if (!await ArePrerequisitesMetAsync())
+                if (!Plugin.ArePrerequisitesMet())
                 {
-                    await _dialogService.ShowDialog<PluginPrerequisitesDialogViewModel>(new Dictionary<string, object> {{"pluginOrFeature", Plugin}});
-                    if (!await ArePrerequisitesMetAsync())
+                    await ShowPrerequisitesDialog(false);
+                    if (!Plugin.ArePrerequisitesMet())
                     {
                         CancelEnable();
                         return;
@@ -194,9 +260,7 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
                 }
             }
             else
-            {
                 _pluginManagementService.DisablePlugin(Plugin, true);
-            }
 
             NotifyOfPropertyChange(nameof(IsEnabled));
             NotifyOfPropertyChange(nameof(CanOpenSettings));
@@ -209,19 +273,17 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
             NotifyOfPropertyChange(nameof(CanOpenSettings));
         }
 
-        private async Task<bool> ArePrerequisitesMetAsync()
+        private void CheckPrerequisites()
         {
-            bool needsPrerequisites = false;
-            foreach (PluginPrerequisite pluginPrerequisite in Plugin.Prerequisites)
-            {
-                if (await pluginPrerequisite.IsMet())
-                    continue;
+            CanInstallPrerequisites = Plugin.Prerequisites.Any();
+            CanRemovePrerequisites = Plugin.Prerequisites.Any(p => p.UninstallActions.Any());
+        }
 
-                needsPrerequisites = true;
-                break;
-            }
-
-            return !needsPrerequisites;
+        private async Task<object> ShowPrerequisitesDialog(bool uninstall)
+        {
+            if (uninstall)
+                return await _dialogService.ShowDialog<PluginPrerequisitesUninstallDialogViewModel>(new Dictionary<string, object> { { "pluginOrFeature", Plugin } });
+            return await _dialogService.ShowDialog<PluginPrerequisitesInstallDialogViewModel>(new Dictionary<string, object> { { "pluginOrFeature", Plugin } });
         }
     }
 }