<?php

declare(strict_types=1);

namespace OCA\WorkflowDeckAutomation\Service;

use OCA\Deck\Db\Card;
use OCA\WorkflowDeckAutomation\Db\Workflow;
use OCP\IL10N;
use OCP\IURLGenerator;
use OCP\IUser;
use OCP\Mail\IMailer;
use OCP\Util;
use Psr\Log\LoggerInterface;
use Throwable;

class NotificationMailer {
	public function __construct(
		private IMailer $mailer,
		private IURLGenerator $urlGenerator,
		private IL10N $l10n,
		private LoggerInterface $logger,
	) {
	}

	public function sendCardMovedNotification(IUser $user, Workflow $workflow, Card $card): void {
		$email = $user->getEMailAddress();
		if ($email === null || $email === '') {
			$this->logger->info('Skipping notification for workflow ' . $workflow->getId() . ': user ' . $user->getUID() . ' has no email address', [
				'app' => 'workflow_deck_automation',
			]);
			return;
		}

		try {
			$cardLink = $this->urlGenerator->getAbsoluteURL(
				'/apps/deck/board/' . $workflow->getBoardId() . '/card/' . $card->getId(),
			);

			$template = $this->mailer->createEMailTemplate('workflow_deck_automation.CardMoved', [
				'cardTitle' => $card->getTitle(),
				'workflowTitle' => $workflow->getTitle(),
			]);
			$template->setSubject($this->l10n->t('Deck card moved: %s', [$card->getTitle()]));
			$template->addHeader();
			$template->addHeading($this->l10n->t('A card was moved automatically'), false);
			$template->addBodyText($this->l10n->t(
				'The card "%1$s" was moved because it is overdue (workflow "%2$s").',
				[$card->getTitle(), $workflow->getTitle()],
			));
			$template->addBodyButton($this->l10n->t('Open card'), $cardLink);
			$template->addFooter();

			$message = $this->mailer->createMessage();
			$message->setTo([$email => $user->getDisplayName()]);
			$message->setFrom([Util::getDefaultEmailAddress('noreply') => $this->l10n->t('Deck Workflow Automation')]);
			$message->useTemplate($template);

			$failedRecipients = $this->mailer->send($message);
			if (!empty($failedRecipients)) {
				$this->logger->error('Notification mail for card ' . $card->getId() . ' failed for: ' . implode(', ', $failedRecipients), [
					'app' => 'workflow_deck_automation',
				]);
			}
		} catch (Throwable $e) {
			$this->logger->error('Could not send notification mail for card ' . $card->getId() . ': ' . $e->getMessage(), [
				'app' => 'workflow_deck_automation',
				'exception' => $e,
			]);
		}
	}
}