Implement manual prefix setting for configuration

Add option to manually set configuration prefix with validation.

Signed-off-by: Jean-Yves <[email protected]>

Author: docjyJ

apps/user_ldap/lib/Command/CreateEmptyConfig.php

@@ -31,11 +31,34 @@ protected function configure(): void {
 				InputOption::VALUE_NONE,
 				'outputs only the prefix'
 			)
+			->addOption(
+				'set-prefix',
+				's',
+				InputOption::VALUE_OPTIONAL,
+				'manually set the prefix (must be unique)',
+			)
 		;
 	}
 
 	protected function execute(InputInterface $input, OutputInterface $output): int {
-		$configPrefix = $this->helper->getNextServerConfigurationPrefix();
+		$configPrefix = $input->getOption('set-prefix');
+		if (is_string($configPrefix)) {
+			if ($configPrefix === '') {
+				$output->writeln('The prefix cannot be empty');
+				return self::FAILURE;
+			}
+			if (preg_match('/^[a-zA-Z0-9-_]+$/', $configPrefix) !== 1) {
+				$output->writeln('The prefix may only contain alphanumeric characters, dashes and underscores');
+				return self::FAILURE;
+			}
+			$availableConfigs = $this->helper->getServerConfigurationPrefixes();
+			if (in_array($configPrefix, $availableConfigs)) {
+				$output->writeln('The prefix is already in use');
+				return self::FAILURE;
+			}
+		} else {
+			$configPrefix = $this->helper->getNextServerConfigurationPrefix();
+		}
 		$configHolder = new Configuration($configPrefix);
 		$configHolder->ldapConfigurationActive = false;
 		$configHolder->saveConfiguration();