1 files changed, 99 insertions, 0 deletions
diff --git a/lib/WellKnown/XrdResponse.php b/lib/WellKnown/XrdResponse.php
new file mode 100644
index 00000000..b5942953
--- /dev/null
+++ b/lib/WellKnown/XrdResponse.php
@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2022 Maxence Lange <maxence@artificial-owl.com>
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Social\WellKnown;
+
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\Response;
+use OCP\AppFramework\Http\TextPlainResponse;
+use OCP\Http\WellKnown\IResponse;
+
+final class XrdResponse implements IResponse {
+	private ?string $expires = null;
+	private int $httpCode;
+
+	/** @var mixed[] */
+	private array $links = [];
+
+	public function __construct(int $httpCode = Http::STATUS_OK) {
+		$this->httpCode = $httpCode;
+	}
+
+	/**
+	 * @param string $expires
+	 *
+	 * @return $this
+	 *
+	 * @since 21.0.0
+	 */
+	public function setExpires(string $expires): self {
+		$this->expires = $expires;
+
+		return $this;
+	}
+
+
+	public function setHttpCode(int $httpCode): self {
+		$this->httpCode = $httpCode;
+
+		return $this;
+	}
+
+	/**
+	 * Add a link
+	 *
+	 * @param string $rel
+	 * @param string $template
+	 *
+	 * @return XrdResponse
+	 */
+	public function addLink(string $rel, string $template): self {
+		$this->links[] = [
+			'rel' => $rel,
+			'template' => $template
+		];
+
+		return $this;
+	}
+
+
+	public function toHttpResponse(): Response {
+		$data = [];
+		$data[] = '<?xml version="1.0" encoding="UTF-8"?>';
+		$data[] = '<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">';
+
+		foreach ($this->links as $link) {
+			$data[] = '  <Link rel="' . $link['rel'] . '"  template="' . $link['template'] . '"/>';
+		}
+
+		$data[] = '</XRD>';
+
+		$response = new TextPlainResponse(implode("\n", $data) . "\n", $this->httpCode);
+		$response->addHeader('Content-Type', 'application/xrd+xml'); // overwrite default header
+
+		return $response;
+	}
+}