feat: listen to user life cycle events

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

lib/Store/BlobStore.php

@@ -268,6 +268,34 @@ class BlobStore {
 		return $blobDeleted && $metaDeleted;
 	}
 
+	/**
+	 * Permanently remove the configured user storage root.
+	 */
+	public function rootDestroy(): void {
+		if ($this->rootPath === null || !is_dir($this->rootPath)) {
+			return;
+		}
+
+		$root = realpath($this->rootPath);
+		if ($root === false || $root === DIRECTORY_SEPARATOR) {
+			throw new RuntimeException('Refusing to destroy an invalid blob root');
+		}
+
+		$iterator = new \RecursiveIteratorIterator(
+			new \RecursiveDirectoryIterator($root, \FilesystemIterator::SKIP_DOTS),
+			\RecursiveIteratorIterator::CHILD_FIRST,
+		);
+		foreach ($iterator as $entry) {
+			if ($entry->isDir() && !$entry->isLink()) {
+				rmdir($entry->getPathname());
+			} else {
+				unlink($entry->getPathname());
+			}
+		}
+		rmdir($root);
+		$this->rootPath = null;
+	}
+
 	// ========== Blob Existence Check ==========
 
 	/**

lib/Store/MetaStore.php

@@ -796,4 +796,14 @@ class MetaStore {
 		}
 	}
 
+	/**
+	 * Delete every chronicle entry owned by a user.
+	 */
+	public function chronicleExpungeByUser(string $tenantId, string $userId): void {
+		$this->_store->selectCollection($this->_ChronicleTable)->deleteMany([
+			'tid' => $tenantId,
+			'uid' => $userId,
+		]);
+	}
+
 }