wip: add mimeIconProvider

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

core/Controller/PreviewController.php

@@ -38,6 +38,7 @@
 use OCP\Files\NotFoundException;
 use OCP\IPreview;
 use OCP\IRequest;
+use OCP\Preview\IMimeIconProvider;
 
 class PreviewController extends Controller {
 	public function __construct(
@@ -46,6 +47,7 @@ public function __construct(
 		private IPreview $preview,
 		private IRootFolder $root,
 		private ?string $userId,
+		private IMimeIconProvider $mimeIconProvider,
 	) {
 		parent::__construct($appName, $request);
 	}
@@ -76,6 +78,9 @@ public function getPreview(
 		bool $a = false,
 		bool $forceIcon = true,
 		string $mode = 'fill'): Http\Response {
+		// Debug mimeIconProvider
+		$this->mimeIconProvider->getMimeIconUrl('image/png');
+
 		if ($file === '' || $x === 0 || $y === 0) {
 			return new DataResponse([], Http::STATUS_BAD_REQUEST);
 		}

lib/private/Preview/MimeIconProvider.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * @copyright Copyright (c) 2023 John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @author John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program. If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+namespace OC\Preview;
+
+use OCP\Files\IMimeTypeDetector;
+use OCP\Preview\IMimeIconProvider;
+
+class MimeIconProvider implements IMimeIconProvider {
+
+	public function __construct(
+		protected IMimeTypeDetector $mimetypeDetector,
+	) {}
+
+	public function getMimeIconUrl(string $mime): string|null {
+		if (!$mime) {
+			return null;
+		}
+
+		// Fetch all the aliases
+		$aliases = $this->mimetypeDetector->getAllAliases();
+
+		// Remove comments
+		$aliases = array_filter($aliases, static function ($key) {
+			return !($key === '' || $key[0] === '_');
+		}, ARRAY_FILTER_USE_KEY);
+
+		// Map all the aliases recursively
+		foreach ($aliases as $alias) {
+			if ($alias === $mime) {
+				$mime = $alias;
+			}
+		}
+	}
+}

lib/public/Files/IMimeTypeDetector.php

@@ -82,4 +82,10 @@ public function detectString($data);
 	 * @since 8.2.0
 	 */
 	public function mimeTypeIcon($mimeType);
+
+	/**
+	 * @return string[]
+	 * @since 28.0.0
+	 */
+	public function getAllAliases(): array;
 }

lib/public/Preview/IMimeIconProvider.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * @copyright Copyright (c) 2023 John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @author John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program. If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+namespace OCP\Preview;
+
+/**
+ * Interface IMimeIconProvider
+ *
+ * @since 28.0.0
+ */
+interface IMimeIconProvider {
+	public function getMimeIconUrl(string $mime): string|null;
+}