FEATURE: Protect referenced asset collections from being deleted

Classes/GraphQL/Resolver/Type/AssetCollectionResolver.php

@@ -17,6 +17,8 @@
 use Flowpack\Media\Ui\Service\AssetCollectionService;
 use Neos\Flow\Annotations as Flow;
 use Neos\Media\Domain\Repository\AssetRepository;
+use Neos\Neos\Domain\Model\Site;
+use Neos\Neos\Domain\Repository\SiteRepository;
 use t3n\GraphQL\ResolverInterface;
 use Neos\Media\Domain\Model\AssetCollection;
 use Neos\Flow\Persistence\PersistenceManagerInterface;
@@ -44,6 +46,14 @@ class AssetCollectionResolver implements ResolverInterface
      */
     protected $assetCollectionService;
 
+    /**
+     * @Flow\Inject
+     * @var SiteRepository
+     */
+    protected $siteRepository;
+
+    protected array|null $siteDefaultAssetCollections = null;
+
     public function id(AssetCollection $assetCollection): string
     {
         return $this->persistenceManager->getIdentifierByObject($assetCollection);
@@ -53,4 +63,25 @@ public function assetCount(AssetCollection $assetCollection): int
     {
         return $this->assetCollectionService->getAssetCollectionAssetCount($this->id($assetCollection));
     }
+
+    /**
+     * Returns true if the asset collection is empty and is not assigned as default collection for a site
+     */
+    public function canDelete(AssetCollection $assetCollection): bool
+    {
+        if ($this->siteDefaultAssetCollections === null) {
+            $this->siteDefaultAssetCollections = [];
+            /** @var Site $site */
+            foreach ($this->siteRepository->findAll() as $site) {
+                $siteAssetCollection = $site->getAssetCollection();
+                if (!$siteAssetCollection) {
+                    continue;
+                }
+                $this->siteDefaultAssetCollections[$this->id($site->getAssetCollection())] = true;
+            }
+        }
+
+        return !array_key_exists($this->id($assetCollection), $this->siteDefaultAssetCollections)
+            && $this->assetCount($assetCollection) === 0;
+    }
 }

Classes/GraphQL/Resolver/Type/MutationResolver.php

@@ -652,10 +652,13 @@ public function deleteAssetCollection($_, array $variables): array
             throw new Exception('Asset collection not found', 1591972269);
         }
 
+        if ($this->assetCollectionService->getAssetCollectionAssetCount($id) > 0) {
+            throw new Exception('Asset collection is not empty', 1730102095);
+        }
+
         /** @noinspection PhpUndefinedMethodInspection */
-        foreach ($this->siteRepository->findByAssetCollection($assetCollection) as $site) {
-            $site->setAssetCollection(null);
-            $this->siteRepository->update($site);
+        if ($this->siteRepository->findOneByAssetCollection($assetCollection)) {
+            throw new Exception('Asset collection is referenced as default collection of a site', 1730101671);
         }
 
         $this->assetCollectionRepository->remove($assetCollection);

Resources/Private/GraphQL/schema.root.graphql

@@ -279,6 +279,7 @@ type AssetCollection {
     tags: [Tag!]!
     assetCount: Int!
     path: AssetCollectionPath
+    canDelete: Boolean!
 }
 
 """

Resources/Private/JavaScript/asset-collections/src/components/DeleteButton.tsx

@@ -74,7 +74,7 @@ const DeleteButton: React.FC = () => {
             style="transparent"
             hoverStyle="error"
             disabled={
-                (!selectedAssetCollection || !config.canManageAssetCollections) &&
+                (!selectedAssetCollection || !config.canManageAssetCollections || !selectedAssetCollection.canDelete) &&
                 (!selectedTag || !config.canManageTags)
             }
             title={translate('assetCollectionTree.toolbar.delete', 'Delete')}

Resources/Private/JavaScript/asset-collections/src/fragments/assetCollection.ts

@@ -14,6 +14,7 @@ export const ASSET_COLLECTION_FRAGMENT = gql`
         }
         assetCount
         path
+        canDelete
     }
     ${TAG_FRAGMENT}
 `;

Resources/Private/JavaScript/asset-collections/typings/AssetCollection.ts

@@ -2,7 +2,7 @@
 
 type AssetCollectionId = string;
 
 interface AssetCollection extends GraphQlEntity {
     __typename: AssetCollectionType;
     readonly id: AssetCollectionId;
     readonly title: string;
@@ -13,4 +13,5 @@
     tags?: Tag[];
     assetCount: number;
     path?: string;
+    canDelete: boolean;
 }

Resources/Private/JavaScript/dev-server/src/fixtures/index.ts

@@ -77,6 +77,7 @@ const assetCollections: AssetCollection[] = range(3).map((index) => ({
             : null,
     // TODO: Recalculate assetCount of assetCollections after generation of assets
     assetCount: 0,
+    canDelete: true,
 }));
 
 const getUsageDetailsForAsset = (assetId: string): UsageDetailsGroup[] => {
@@ -154,6 +155,17 @@ const assets = range(150).map((index) => {
     const isCloud = index > 120;
     const filename = getExampleFilename(index);
 
+    const collectionsForAsset = range(index % 2).map(
+        (i) => assetCollections[(i * 2 + index) % assetCollections.length]
+    );
+
+    collectionsForAsset.forEach((collection) => {
+        collection.assetCount++;
+        collection.canDelete = false;
+    });
+
+    const tagsForAsset = range(index % 3).map((i) => tags[(i * 3 + index) % tags.length]);
+
     return {
         __typename: 'Asset',
         id: index.toString(),
@@ -163,8 +175,8 @@ const assets = range(150).map((index) => {
         label: `Example asset ${index + 1}`,
         caption: `The caption for example asset ${index + 1}`,
         filename: 'example1.jpg',
-        tags: range(index % 3).map((i) => tags[(i * 3 + index) % tags.length]),
-        collections: range(index % 2).map((i) => assetCollections[(i * 2 + index) % assetCollections.length]),
+        tags: tagsForAsset,
+        collections: collectionsForAsset,
         copyrightNotice: 'The Neos team',
         lastModified: new Date(`2020-06-16 15:${Math.floor((150 - index) / 60)}:${(150 - index) % 60}`),
         iptcProperties: index % 5 === 0 ? getIptcProperties(index) : [],

Resources/Private/JavaScript/dev-server/src/server.ts

@@ -217,6 +217,7 @@ const __dirname = path.dirname(fileURLToPath(import.meta.url));
             deleteAssetCollection: ($_, { id }: { id: string }): boolean => {
                 const assetCollection = assetCollections.find((assetCollection) => assetCollection.id === id);
                 if (!assetCollection) return false;
+                if (assetCollection.assetCount > 0) return false;
                 assetCollections = assetCollections.filter((assetCollection) => assetCollection.id !== id);
                 return true;
             },
@@ -236,6 +237,7 @@ const __dirname = path.dirname(fileURLToPath(import.meta.url));
                         : null,
                     tags: [],
                     assetCount: 0,
+                    canDelete: true,
                 };
                 assetCollections.push(newCollection);
                 return newCollection;

Resources/Private/JavaScript/media-module/package.json

@@ -56,7 +56,6 @@
     "@types/react-dom": "^17.0.20",
     "@types/react-dropzone": "^5.1.0",
     "apollo-server-express": "^2.26.1",
-    "node-sass": "^8.0.0",
     "parcel": "^2.9.1"
   }
 }

phpstan.neon

@@ -4,3 +4,4 @@ parameters:
         - Classes
     ignoreErrors:
         - '#Call to an undefined method [a-zA-Z0-9\\_]+Repository::findBy[a-zA-Z]+\(\)#'
+        - '#Call to an undefined method [a-zA-Z0-9\\_]+Repository::findOneBy[a-zA-Z]+\(\)#'