1 files changed, 139 insertions, 0 deletions
diff --git a/apps/settings/lib/Mailer/NewUserMailHelper.php b/apps/settings/lib/Mailer/NewUserMailHelper.php
new file mode 100644
index 00000000000..202495a020e
--- /dev/null
+++ b/apps/settings/lib/Mailer/NewUserMailHelper.php
@@ -0,0 +1,139 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\Settings\Mailer;
+
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\Defaults;
+use OCP\IConfig;
+use OCP\IURLGenerator;
+use OCP\IUser;
+use OCP\L10N\IFactory;
+use OCP\Mail\Headers\AutoSubmitted;
+use OCP\Mail\IEMailTemplate;
+use OCP\Mail\IMailer;
+use OCP\Security\ICrypto;
+use OCP\Security\ISecureRandom;
+
+class NewUserMailHelper {
+	/**
+	 * @param Defaults $themingDefaults
+	 * @param IURLGenerator $urlGenerator
+	 * @param IFactory $l10nFactory
+	 * @param IMailer $mailer
+	 * @param ISecureRandom $secureRandom
+	 * @param ITimeFactory $timeFactory
+	 * @param IConfig $config
+	 * @param ICrypto $crypto
+	 * @param string $fromAddress
+	 */
+	public function __construct(
+		private Defaults $themingDefaults,
+		private IURLGenerator $urlGenerator,
+		private IFactory $l10nFactory,
+		private IMailer $mailer,
+		private ISecureRandom $secureRandom,
+		private ITimeFactory $timeFactory,
+		private IConfig $config,
+		private ICrypto $crypto,
+		private $fromAddress,
+	) {
+	}
+
+	/**
+	 * @param IUser $user
+	 * @param bool $generatePasswordResetToken
+	 * @return IEMailTemplate
+	 */
+	public function generateTemplate(IUser $user, $generatePasswordResetToken = false) {
+		$userId = $user->getUID();
+		$lang = $this->l10nFactory->getUserLanguage($user);
+		$l10n = $this->l10nFactory->get('settings', $lang);
+
+		if ($generatePasswordResetToken) {
+			$token = $this->secureRandom->generate(
+				21,
+				ISecureRandom::CHAR_ALPHANUMERIC
+			);
+			$tokenValue = $this->timeFactory->getTime() . ':' . $token;
+			$mailAddress = ($user->getEMailAddress() !== null) ? $user->getEMailAddress() : '';
+			$encryptedValue = $this->crypto->encrypt($tokenValue, $mailAddress . $this->config->getSystemValue('secret'));
+			$this->config->setUserValue($user->getUID(), 'core', 'lostpassword', $encryptedValue);
+			$link = $this->urlGenerator->linkToRouteAbsolute('core.lost.resetform', ['userId' => $user->getUID(), 'token' => $token]);
+		} else {
+			$link = $this->urlGenerator->getAbsoluteURL('/');
+		}
+		$displayName = $user->getDisplayName();
+
+		$emailTemplate = $this->mailer->createEMailTemplate('settings.Welcome', [
+			'link' => $link,
+			'displayname' => $displayName,
+			'userid' => $userId,
+			'instancename' => $this->themingDefaults->getName(),
+			'resetTokenGenerated' => $generatePasswordResetToken,
+		]);
+
+		$emailTemplate->setSubject($l10n->t('Your %s account was created', [$this->themingDefaults->getName()]));
+		$emailTemplate->addHeader();
+		if ($displayName === $userId) {
+			$emailTemplate->addHeading($l10n->t('Welcome aboard'));
+		} else {
+			$emailTemplate->addHeading($l10n->t('Welcome aboard %s', [$displayName]));
+		}
+		$emailTemplate->addBodyText($l10n->t('Welcome to your %s account, you can add, protect, and share your data.', [$this->themingDefaults->getName()]));
+		if ($user->getBackendClassName() !== 'LDAP') {
+			$emailTemplate->addBodyText($l10n->t('Your Login is: %s', [$userId]));
+		}
+		if ($generatePasswordResetToken) {
+			$leftButtonText = $l10n->t('Set your password');
+		} else {
+			$leftButtonText = $l10n->t('Go to %s', [$this->themingDefaults->getName()]);
+		}
+
+		$clientDownload = $this->config->getSystemValue('customclient_desktop', 'https://nextcloud.com/install/#install-clients');
+		if ($clientDownload === '') {
+			$emailTemplate->addBodyButton(
+				$leftButtonText,
+				$link
+			);
+		} else {
+			$emailTemplate->addBodyButtonGroup(
+				$leftButtonText,
+				$link,
+				$l10n->t('Install Client'),
+				$clientDownload
+			);
+		}
+
+		$emailTemplate->addFooter('', $lang);
+
+		return $emailTemplate;
+	}
+
+	/**
+	 * Sends a welcome mail to $user
+	 *
+	 * @param IUser $user
+	 * @param IEmailTemplate $emailTemplate
+	 * @throws \Exception If mail could not be sent
+	 */
+	public function sendMail(IUser $user,
+		IEMailTemplate $emailTemplate): void {
+
+		// Be sure to never try to send to an empty e-mail
+		$email = $user->getEMailAddress();
+		if ($email === null) {
+			return;
+		}
+
+		$message = $this->mailer->createMessage();
+		$message->setTo([$email => $user->getDisplayName()]);
+		$message->setFrom([$this->fromAddress => $this->themingDefaults->getName()]);
+		$message->useTemplate($emailTemplate);
+		$message->setAutoSubmitted(AutoSubmitted::VALUE_AUTO_GENERATED);
+		$this->mailer->send($message);
+	}
+}