feat: Add support for nodeId validation in ValidateHelper

Support validating files by Nextcloud nodeId in addition to
LibreSign fileId. This enables creating signature requests
for files that haven't been registered in LibreSign yet.

The validateFile method now accepts 'nodeId' parameter and
validates it similarly to 'fileId', ensuring the file exists
and has the correct MIME type.

Signed-off-by: Vitor Mattos <[email protected]>

Author: vitormattos

lib/Helper/ValidateHelper.php

@@ -125,6 +125,17 @@ public function validateFile(array $data, int $type = self::TYPE_TO_SIGN, ?IUser
 			}
 			$this->validateIfNodeIdExists((int)$data['file']['fileId'], $data['userManager']->getUID(), $type);
 			$this->validateMimeTypeAcceptedByNodeId((int)$data['file']['fileId'], $data['userManager']->getUID(), $type);
+		} elseif (!empty($data['file']['nodeId'])) {
+			if (!is_numeric($data['file']['nodeId'])) {
+				throw new LibresignException($this->l10n->t('File type: %s. Invalid fileID.', [$this->getTypeOfFile($type)]));
+			}
+			if (!is_a($user, IUser::class)) {
+				if (!is_a($data['userManager'], IUser::class)) {
+					throw new LibresignException($this->l10n->t('User not found.'));
+				}
+			}
+			$this->validateIfNodeIdExists((int)$data['file']['nodeId'], $data['userManager']->getUID(), $type);
+			$this->validateMimeTypeAcceptedByNodeId((int)$data['file']['nodeId'], $data['userManager']->getUID(), $type);
 		} elseif (!empty($data['file']['base64'])) {
 			$this->validateBase64($data['file']['base64'], $type);
 		} elseif (!empty($data['file']['path'])) {