Resolve #1552

integrations/nextcloud/snappymail/appinfo/info.xml

@@ -86,4 +86,7 @@ There, click on the link to go to the SnappyMail admin panel.
 			<step>OCA\SnappyMail\Migration\InstallStep</step>
 		</post-migration>
 	</repair-steps>
+	<commands>
+		<command>OCA\SnappyMail\Command\Settings</command>
+	</commands>
 </info>

integrations/nextcloud/snappymail/lib/Command/Settings.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace OCA\SnappyMail\Command;
+
+use OCA\SnappyMail\Util\SnappyMailHelper;
+use OC\Core\Command\Base;
+use OCP\IConfig;
+use OCP\IUserManager;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class Settings extends Base
+{
+	protected IUserManager $userManager;
+	protected IConfig $config;
+
+	public function __construct(IUserManager $userManager, IConfig $config) {
+		parent::__construct();
+		$this->userManager = $userManager;
+		$this->config = $config;
+	}
+
+	protected function configure() {
+		$this
+			->setName('snappymail:settings')
+			->setDescription('modifies configuration')
+			->addArgument(
+				'uid',
+				InputArgument::REQUIRED,
+				'User ID used to login'
+			)
+			->addArgument(
+				'user',
+				InputArgument::REQUIRED,
+				'The login username'
+			)
+			->addArgument(
+				'pass',
+				InputArgument::REQUIRED,
+				'The login passphrase'
+			)
+		;
+	}
+
+	protected function checkInput(InputInterface $input) {
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int {
+		$uid = $input->getArgument('uid');
+		if (!$this->userManager->userExists($uid)) {
+			$output->writeln('<error>The user "' . $uid . '" does not exist.</error>');
+			return 1;
+		}
+
+		$sEmail = $input->getArgument('user');
+		$this->config->setUserValue($uid, 'snappymail', 'snappymail-email', $sEmail);
+
+		$sPass = $input->getArgument('pass');
+		$sPass = ($sEmail && $sPass) ? SnappyMailHelper::encodePassword($sPass, \md5($sEmail)) : '';
+		$this->config->setUserValue($uid, 'snappymail', 'passphrase', $sPass);
+		return 0;
+	}
+}