fix: error handling for wrong json values

Signed-off-by: Jana Peper <jana.peper@nextcloud.com>

apps/settings/lib/Settings/Admin/ArtificialIntelligence.php

@@ -24,6 +24,7 @@ use OCP\Translation\ITranslationProviderWithId;
 use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\ContainerInterface;
 use Psr\Container\NotFoundExceptionInterface;
+use Psr\Log\LoggerInterface;
 
 class ArtificialIntelligence implements IDelegatedSettings {
 	public function __construct(
@@ -36,6 +37,7 @@ class ArtificialIntelligence implements IDelegatedSettings {
 		private ContainerInterface $container,
 		private \OCP\TextToImage\IManager $text2imageManager,
 		private \OCP\TaskProcessing\IManager $taskProcessingManager,
+		private LoggerInterface $logger,
 	) {
 	}
 
@@ -143,7 +145,20 @@ class ArtificialIntelligence implements IDelegatedSettings {
 			$value = $defaultValue;
 			$json = $this->config->getAppValue('core', $key, '');
 			if ($json !== '') {
+				try {
 					$value = json_decode($json, true, flags: JSON_THROW_ON_ERROR);
+				} catch (\JsonException $e) {
+					$this->logger->error('Failed to get settings. JSON Error in ' . $key, ['exception' => $e]);
+					if ($key === 'ai.taskprocessing_type_preferences') {
+						$value = [];
+						foreach ($taskProcessingTypeSettings as $taskTypeId => $taskTypeValue) {
+							$value[$taskTypeId] = false;
+						}
+						$settings[$key] = $value;
+					}
+					continue;
+				}
+				
 				switch ($key) {
 					case 'ai.taskprocessing_provider_preferences':
 					case 'ai.taskprocessing_type_preferences':

core/Command/TaskProcessing/EnabledCommand.php

@@ -41,6 +41,7 @@ class EnabledCommand extends Base {
 		$enabled = (bool)$input->getArgument('enabled');
 		$taskType = $input->getArgument('task-type-id');
 		$json = $this->config->getAppValue('core', 'ai.taskprocessing_type_preferences');
+		try {
 			if ($json === '') {
 				$taskTypeSettings = [];
 			} else {
@@ -52,5 +53,9 @@ class EnabledCommand extends Base {
 			$this->config->setAppValue('core', 'ai.taskprocessing_type_preferences', json_encode($taskTypeSettings));
 			$this->writeArrayInOutputFormat($input, $output, $taskTypeSettings);
 			return 0;
+		} catch (\JsonException $e) {
+			throw new \JsonException('Error in TaskType DB entry');
+		}
+		
 	}
 }

lib/private/TaskProcessing/Manager.php

@@ -568,11 +568,23 @@ class Manager implements IManager {
 	 * @return array
 	 */
 	private function _getTaskTypeSettings(): array {
+		try {
 			$json = $this->config->getAppValue('core', 'ai.taskprocessing_type_preferences', '');
 			if ($json === '') {
 				return [];
 			}
 			return json_decode($json, true, flags: JSON_THROW_ON_ERROR);
+		} catch (\JsonException $e) {
+			$this->logger->error('Failed to get settings. JSON Error in ai.taskprocessing_type_preferences', ['exception' => $e]);
+			$taskTypeSettings = [];
+			$taskTypes = $this->_getTaskTypes();
+			foreach ($taskTypes as $taskType) {
+				$taskTypeSettings[$taskType->getId()] = false;
+			};
+			
+			return $taskTypeSettings;
+		}
+		
 	}
 
 	/**