1 files changed, 36 insertions, 0 deletions
diff --git a/lib/private/RichObjectStrings/RichTextFormatter.php b/lib/private/RichObjectStrings/RichTextFormatter.php
new file mode 100644
index 00000000000..9c9ddf94fa9
--- /dev/null
+++ b/lib/private/RichObjectStrings/RichTextFormatter.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\RichObjectStrings;
+
+use OCP\RichObjectStrings\IRichTextFormatter;
+
+class RichTextFormatter implements IRichTextFormatter {
+	/**
+	 * @throws \InvalidArgumentException if a parameter has no name or no type
+	 */
+	public function richToParsed(string $message, array $parameters): string {
+		$placeholders = [];
+		$replacements = [];
+		foreach ($parameters as $placeholder => $parameter) {
+			$placeholders[] = '{' . $placeholder . '}';
+			foreach (['name','type'] as $requiredField) {
+				if (!isset($parameter[$requiredField]) || !is_string($parameter[$requiredField])) {
+					throw new \InvalidArgumentException("Invalid rich object, {$requiredField} field is missing");
+				}
+			}
+			$replacements[] = match($parameter['type']) {
+				'user' => '@' . $parameter['name'],
+				'file' => $parameter['path'] ?? $parameter['name'],
+				default => $parameter['name'],
+			};
+		}
+		return str_replace($placeholders, $replacements, $message);
+	}
+}