Implementation of migration/update handler for recipes.

Updating blog.recipe.xml with some features/migrations.
Refactoring a recipe step queue utility method.

--HG--
branch : recipe

src/Orchard.Web/Modules/Orchard.Recipes/RecipeHandlers/MigrationRecipeHandler.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Orchard.Data.Migration;
 using Orchard.Localization;
 using Orchard.Logging;
 using Orchard.Recipes.Models;
@@ -8,7 +9,10 @@ using Orchard.Recipes.Services;
 
 namespace Orchard.Recipes.RecipeHandlers {
     public class MigrationRecipeHandler : IRecipeHandler {
-        public MigrationRecipeHandler() {
+        private readonly IDataMigrationManager _dataMigrationManager;
+
+        public MigrationRecipeHandler(IDataMigrationManager dataMigrationManager) {
+            _dataMigrationManager = dataMigrationManager;
             Logger = NullLogger.Instance;
             T = NullLocalizer.Instance;
         }
@@ -37,6 +41,15 @@ namespace Orchard.Recipes.RecipeHandlers {
                 }
             }
 
+            if (runAll) {
+                foreach (var feature in _dataMigrationManager.GetFeaturesThatNeedUpdate()) {
+                    _dataMigrationManager.Update(feature);
+                }
+            }
+            else {
+                _dataMigrationManager.Update(features);
+            }
+
             // run migrations
             recipeContext.Executed = true;
         }

src/Orchard.Web/Modules/Orchard.Recipes/Services/RecipeStepQueue.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Xml.Linq;
 using Orchard.FileSystems.AppData;
 using Orchard.Localization;
@@ -65,17 +66,11 @@ namespace Orchard.Recipes.Services {
 
         private int GetFirstStepIndex(string executionId) {
             var stepFiles = new List<string>(_appDataFolder.ListFiles(Path.Combine(_recipeQueueFolder, executionId)));
-            int firstIndex = stepFiles.Count;
-            if (firstIndex == 0)
+            if (stepFiles.Count == 0)
                 return -1;
-            // we always have only a handful of steps.
-            foreach (var stepFile in stepFiles) {
-                int stepOrder = Int32.Parse(stepFile.Substring(stepFile.LastIndexOf('/') + 1));
-                if (firstIndex > stepOrder)
-                    firstIndex = stepOrder;
-            }
-
-            return firstIndex;
+            var currentSteps = stepFiles.Select(stepFile => Int32.Parse(stepFile.Substring(stepFile.LastIndexOf('/') + 1))).ToList();
+            currentSteps.Sort();
+            return currentSteps[0];
         }
 
         private int GetLastStepIndex(string executionId) {

src/Orchard.Web/Modules/Orchard.Setup/Recipes/blog.recipe.xml

@@ -25,4 +25,11 @@
         <BodyPart BodyPartSettings.FlavorDefault="html" />
       </Parts>
   </Metadata>
+
+  <Command>
+    feature enable Orchard.Experimental
+    feature enable Orchard.Experimental.TestingLists
+  </Command>
+  
+  <Migration features="Orchard.Experimental.TestingLists" />
 </Orchard>

src/Orchard.Web/Modules/Orchard.Setup/Services/SetupService.cs

@@ -176,7 +176,7 @@ namespace Orchard.Setup.Services {
                     var dataMigrationManager = environment.Resolve<IDataMigrationManager>();
                     dataMigrationManager.Update("Settings");
 
-                    foreach ( var feature in context.EnabledFeatures ) {
+                    foreach (var feature in context.EnabledFeatures) {
                         dataMigrationManager.Update(feature);
                     }