Plugins - Don't load incompatible plugins

src/Artemis.Core/Services/Interfaces/IPluginManagementService.cs

@@ -37,7 +37,7 @@ namespace Artemis.Core.Services
         ///     Loads the plugin located in the provided <paramref name="directory" />
         /// </summary>
         /// <param name="directory">The directory where the plugin is located</param>
-        Plugin LoadPlugin(DirectoryInfo directory);
+        Plugin? LoadPlugin(DirectoryInfo directory);
 
         /// <summary>
         ///     Enables the provided <paramref name="plugin" />
@@ -68,7 +68,7 @@ namespace Artemis.Core.Services
         /// </summary>
         /// <param name="fileName">The full path to the ZIP file that contains the plugin</param>
         /// <returns>The resulting plugin</returns>
-        Plugin ImportPlugin(string fileName);
+        Plugin? ImportPlugin(string fileName);
 
         /// <summary>
         ///     Unloads and permanently removes the provided plugin

src/Artemis.Core/Services/PluginManagementService.cs

@@ -292,7 +292,7 @@ namespace Artemis.Core.Services
             }
         }
 
-        public Plugin LoadPlugin(DirectoryInfo directory)
+        public Plugin? LoadPlugin(DirectoryInfo directory)
         {
             _logger.Verbose("Loading plugin from {directory}", directory.FullName);
 
@@ -304,6 +304,9 @@ namespace Artemis.Core.Services
             // PluginInfo contains the ID which we need to move on
             PluginInfo pluginInfo = CoreJson.DeserializeObject<PluginInfo>(File.ReadAllText(metadataFile))!;
 
+            if (!pluginInfo.IsCompatible)
+                return null;
+
             if (pluginInfo.Guid == Constants.CorePluginInfo.Guid)
                 throw new ArtemisPluginException($"Plugin {pluginInfo} cannot use reserved GUID {pluginInfo.Guid}");
 
@@ -531,7 +534,7 @@ namespace Artemis.Core.Services
             OnPluginDisabled(new PluginEventArgs(plugin));
         }
 
-        public Plugin ImportPlugin(string fileName)
+        public Plugin? ImportPlugin(string fileName)
         {
             DirectoryInfo pluginDirectory = new(Constants.PluginsFolder);