fix(mail): Fix big logos in mail templates for Outlook

Signed-off-by: Joas Schilling <coding@schilljs.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/private/Repair/RepairLogoDimension.php b/lib/private/Repair/RepairLogoDimension.php
new file mode 100644
index 00000000000..122da205986
--- /dev/null
+++ b/lib/private/Repair/RepairLogoDimension.php
@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OC\Repair;
+
+use OCA\Theming\ImageManager;
+use OCP\IConfig;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+use OCP\Server;
+
+class RepairLogoDimension implements IRepairStep {
+	public function __construct(
+		protected IConfig $config,
+	) {
+	}
+
+	public function getName(): string {
+		return 'Cache logo dimension to fix size in emails on Outlook';
+	}
+
+	public function run(IOutput $output): void {
+		$logoDimensions = $this->config->getAppValue('theming', 'logoDimensions');
+		if (preg_match('/^\d+x\d+$/', $logoDimensions)) {
+			$output->info('Logo dimensions are already known');
+			return;
+		}
+
+		try {
+			/** @var ImageManager $imageManager */
+			$imageManager = Server::get(ImageManager::class);
+		} catch (\Throwable) {
+			$output->info('Theming is disabled');
+			return;
+		}
+
+		if (!$imageManager->hasImage('logo')) {
+			$output->info('Theming is not used to provide a logo');
+			return;
+		}
+
+		$simpleFile = $imageManager->getImage('logo', false);
+
+		$image = @imagecreatefromstring($simpleFile->getContent());
+
+		$dimensions = '';
+		if ($image !== false) {
+			$dimensions = imagesx($image) . 'x' . imagesy($image);
+		} elseif (str_starts_with($simpleFile->getMimeType(), 'image/svg')) {
+			$matched = preg_match('/viewbox=["\']\d* \d* (\d*\.?\d*) (\d*\.?\d*)["\']/i', $simpleFile->getContent(), $matches);
+			if ($matched) {
+				$dimensions = $matches[1] . 'x' . $matches[2];
+			}
+		}
+
+		if (!$dimensions) {
+			$output->warning('Failed to read dimensions from logo');
+			$this->config->deleteAppValue('theming', 'logoDimensions');
+			return;
+		}
+
+		$dimensions = imagesx($image) . 'x' . imagesy($image);
+		$this->config->setAppValue('theming', 'logoDimensions', $dimensions);
+		$output->info('Updated logo dimensions: ' . $dimensions);
+	}
+}