Emptying Combinator cache on shell activation if marker file exists; …

…Adding validate-pull-request.yml to csproj

Constants/FileNames.cs

@@ -0,0 +1,7 @@
+namespace Piedone.Combinator.Constants
+{
+    public static class FileNames
+    {
+        public const string ClearCache = "_" + nameof(ClearCache);
+    }
+}

Constants/FolderNames.cs

@@ -0,0 +1,9 @@
+namespace Piedone.Combinator.Constants
+{
+    public static class FolderNames
+    {
+        public const string PiedoneModules = "_" + nameof(PiedoneModules);
+        public const string Combinator = nameof(Combinator);
+        public const string Sites = nameof(Sites);
+    }
+}

EventHandlers/CacheFileEventHandler.cs

@@ -0,0 +1,51 @@
+using Orchard.Environment;
+using Orchard.Environment.Configuration;
+using Orchard.Environment.Extensions;
+using Orchard.FileSystems.AppData;
+using Piedone.Combinator.Constants;
+using Piedone.Combinator.Services;
+
+namespace Piedone.Combinator.EventHandlers
+{
+    [OrchardFeature("Piedone.Combinator")]
+    public class CacheFileEventHandler : IOrchardShellEvents
+    {
+        private const string ClearCacheFileName = FileNames.ClearCache + ".txt";
+
+        private readonly ICacheFileService _cacheFileService;
+        private readonly IAppDataFolder _appDataFolder;
+
+        private readonly string _basePath;
+
+        /// <summary>
+        /// Gets or sets a value indicating whether emptying Combinator cache is disabled, primarily through HostComponents.config.
+        /// </summary>
+        public bool IsEmptyingCacheDisabled { get; set; }
+
+        public CacheFileEventHandler(ICacheFileService cacheFileService, IAppDataFolder appDataFolder, ShellSettings shellSettings)
+        {
+            _cacheFileService = cacheFileService;
+            _appDataFolder = appDataFolder;
+
+            _basePath = _appDataFolder.Combine(FolderNames.Sites, shellSettings.Name, FolderNames.PiedoneModules, FolderNames.Combinator);
+        }
+
+        public void Activated()
+        {
+            if (IsEmptyingCacheDisabled) return;
+
+            var pathToClearCacheFile = _appDataFolder.Combine(_basePath, ClearCacheFileName);
+
+            if (!_appDataFolder.FileExists(pathToClearCacheFile)) return;
+
+            _cacheFileService.Empty();
+
+            _appDataFolder.DeleteFile(pathToClearCacheFile);
+        }
+
+        public void Terminating()
+        {
+            // Terminating event does not need to be implemented.
+        }
+    }
+}

Piedone.Combinator.csproj

@@ -161,6 +161,8 @@
     <Content Include="Module.txt" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Constants\FolderNames.cs" />
+    <Compile Include="Constants\FileNames.cs" />
     <Compile Include="Commands\CombinatorCommands.cs" />
     <Compile Include="Controllers\AdminController.cs" />
     <Compile Include="Drivers\CombinatorSettingsPartDriver.cs" />
@@ -170,6 +172,7 @@
     <Compile Include="EventHandlers\ICombinatorEventMonitor.cs" />
     <Compile Include="EventHandlers\ICombinatorResourceEventHandler.cs" />
     <Compile Include="EventHandlers\LessPreprocessor.cs" />
+    <Compile Include="EventHandlers\CacheFileEventHandler.cs" />
     <Compile Include="EventHandlers\SassPreprocessor.cs" />
     <Compile Include="Extensions\CombinedFileRecordExtensions.cs" />
     <Compile Include="Extensions\RequireSettingsExtensions.cs" />
@@ -290,4 +293,7 @@
   <ItemGroup>
     <Content Include="packages.config" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include=".github\workflows\validate-pull-request.yml" />
+  </ItemGroup>
 </Project>