Prerequisites - Moved to PluginInfo and FeatureInfo

Features don't have instances until they are enabled so this made sense, Plugins followed suit for consistency's sake

src/Artemis.Core/Plugins/Plugin.cs

@@ -78,11 +78,6 @@ namespace Artemis.Core
         /// </summary>
         public IKernel? Kernel { get; internal set; }
 
-        /// <summary>
-        ///     Gets a list of prerequisites for this plugin feature
-        /// </summary>
-        public List<PluginPrerequisite> Prerequisites { get; } = new();
-
         /// <summary>
         ///     The PluginLoader backing this plugin
         /// </summary>
@@ -119,20 +114,22 @@ namespace Artemis.Core
             return _features.FirstOrDefault(i => i.Instance is T)?.Instance as T;
         }
         
+        /// <summary>
+        ///     Looks up the feature info the feature of type <typeparamref name="T" />
+        /// </summary>
+        /// <typeparam name="T">The type of feature to find</typeparam>
+        /// <returns>If found, feature info of the feature</returns>
+        public PluginFeatureInfo? GetFeatureInfo<T>() where T : PluginFeature
+        {
+            return _features.FirstOrDefault(i => i.FeatureType == typeof(T));
+        }
+
         /// <inheritdoc />
         public override string ToString()
         {
             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/PluginFeature.cs

@@ -60,11 +60,6 @@ namespace Artemis.Core
         /// </summary>
         public TimeSpan RenderTime { get; private set; }
 
-        /// <summary>
-        ///     Gets a list of prerequisites for this plugin feature
-        /// </summary>
-        public List<PluginPrerequisite> Prerequisites { get; } = new();
-
         internal PluginFeatureEntity Entity { get; set; } = null!; // Will be set right after construction
 
         /// <summary>

src/Artemis.Core/Plugins/PluginFeatureInfo.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Collections.Generic;
+using System.Linq;
 using Artemis.Core.DataModelExpansions;
 using Artemis.Core.DeviceProviders;
 using Artemis.Core.LayerBrushes;
@@ -128,6 +130,19 @@ namespace Artemis.Core
             internal set => SetAndNotify(ref _instance, value);
         }
 
+        /// <summary>
+        ///     Gets a list of prerequisites for this plugin feature
+        /// </summary>
+        public List<PluginPrerequisite> Prerequisites { get; } = new();
+
+        /// <summary>
+        ///     Determines whether the prerequisites of this feature are met
+        /// </summary>
+        public bool ArePrerequisitesMet()
+        {
+            return Prerequisites.All(p => p.IsMet());
+        }
+
         /// <inheritdoc />
         public override string ToString()
         {

src/Artemis.Core/Plugins/PluginInfo.cs

@@ -1,5 +1,7 @@
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
+using System.Linq;
 using Newtonsoft.Json;
 
 namespace Artemis.Core
@@ -117,6 +119,20 @@ namespace Artemis.Core
             internal set => SetAndNotify(ref _plugin, value);
         }
 
+        /// <summary>
+        ///     Gets a list of prerequisites for this plugin
+        /// </summary>
+        public List<PluginPrerequisite> Prerequisites { get; } = new();
+
+
+        /// <summary>
+        ///     Determines whether the prerequisites of this plugin are met
+        /// </summary>
+        public bool ArePrerequisitesMet()
+        {
+            return Prerequisites.All(p => p.IsMet());
+        }
+
         /// <inheritdoc />
         public override string ToString()
         {

src/Artemis.Core/Services/PluginManagementService.cs

@@ -381,7 +381,7 @@ namespace Artemis.Core.Services
                 return;
             }
 
-            if (!plugin.ArePrerequisitesMet())
+            if (!plugin.Info.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

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

@@ -27,12 +27,12 @@ namespace Artemis.UI.Screens.Plugins
             if (pluginOrFeature is Plugin plugin)
             {
                 Plugin = plugin;
-                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(plugin.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, false)));
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(plugin.Info.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, false)));
             }
             else if (pluginOrFeature is PluginFeature feature)
             {
                 Feature = feature;
-                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(feature.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, false)));
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(feature.Info.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, false)));
             }
             else
                 throw new ArtemisUIException($"Expected plugin or feature to be passed to {nameof(PluginPrerequisitesInstallDialogViewModel)}");
@@ -136,7 +136,10 @@ namespace Artemis.UI.Screens.Plugins
         protected override void OnInitialActivate()
         {
             CanInstall = false;
-            Task.Run(() => CanInstall = !Plugin.ArePrerequisitesMet());
+            if (Plugin != null)
+                Task.Run(() => CanInstall = !Plugin.Info.ArePrerequisitesMet());
+            else
+                Task.Run(() => CanInstall = !Feature.Info.ArePrerequisitesMet());
 
             base.OnInitialActivate();
         }

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

@@ -32,12 +32,12 @@ namespace Artemis.UI.Screens.Plugins
             if (pluginOrFeature is Plugin plugin)
             {
                 Plugin = plugin;
-                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(plugin.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, true)));
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(plugin.Info.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)));
+                Prerequisites = new BindableCollection<PluginPrerequisiteViewModel>(feature.Info.Prerequisites.Select(p => prerequisitesVmFactory.PluginPrerequisiteViewModel(p, true)));
             }
             else
                 throw new ArtemisUIException($"Expected plugin or feature to be passed to {nameof(PluginPrerequisitesInstallDialogViewModel)}");
@@ -144,7 +144,10 @@ namespace Artemis.UI.Screens.Plugins
         {
             CanUninstall = false;
             // Could be slow so take it off of the UI thread
-            Task.Run(() => CanUninstall = Plugin.Prerequisites.Any(p => p.IsMet()));
+            if (Plugin != null)
+                Task.Run(() => CanUninstall = Plugin.Info.Prerequisites.Any(p => p.IsMet()));
+            else
+                Task.Run(() => CanUninstall = Feature.Info.Prerequisites.Any(p => p.IsMet()));
 
             base.OnInitialActivate();
         }

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

@@ -140,13 +140,13 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
 
         public async Task InstallPrerequisites()
         {
-            if (Plugin.Prerequisites.Any())
+            if (Plugin.Info.Prerequisites.Any())
                 await ShowPrerequisitesDialog(false);
         }
 
         public async Task RemovePrerequisites()
         {
-            if (Plugin.Prerequisites.Any(p => p.UninstallActions.Any()))
+            if (Plugin.Info.Prerequisites.Any(p => p.UninstallActions.Any()))
             {
                 await ShowPrerequisitesDialog(true);
                 NotifyOfPropertyChange(nameof(IsEnabled));
@@ -179,6 +179,12 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
             if (!confirmed)
                 return;
 
+            // If the plugin or any of its features has uninstall actions, offer to run these
+            if (Plugin.Info.Prerequisites.Any(p => p.UninstallActions.Any()) || Plugin.Features.Any(f => f.Prerequisites.Any(fp => fp.UninstallActions.Any())))
+            {
+
+            }
+
             try
             {
                 _pluginManagementService.RemovePlugin(Plugin, false);
@@ -236,10 +242,10 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
                 }
 
                 // Check if all prerequisites are met async
-                if (!Plugin.ArePrerequisitesMet())
+                if (!Plugin.Info.ArePrerequisitesMet())
                 {
                     await ShowPrerequisitesDialog(false);
-                    if (!Plugin.ArePrerequisitesMet())
+                    if (!Plugin.Info.ArePrerequisitesMet())
                     {
                         CancelEnable();
                         return;
@@ -275,8 +281,8 @@ namespace Artemis.UI.Screens.Settings.Tabs.Plugins
 
         private void CheckPrerequisites()
         {
-            CanInstallPrerequisites = Plugin.Prerequisites.Any();
+            CanInstallPrerequisites = Plugin.Info.Prerequisites.Any();
-            CanRemovePrerequisites = Plugin.Prerequisites.Any(p => p.UninstallActions.Any());
+            CanRemovePrerequisites = Plugin.Info.Prerequisites.Any(p => p.UninstallActions.Any());
         }
 
         private async Task<object> ShowPrerequisitesDialog(bool uninstall)