- Migrated from https://github.com/Yetangitu/owncloud-apps

- substantial bit rot accrued in 4 years of non-maintenance which made Reader unusable
 - Reader now works reliably on public pages - or at least it _Works For Me™_

 - Refactored a substantial part of the code to comply to the "current" (ha ha) Nextcloud API
 - Dropped Owncloud compatibility for lack of a testing installation
 - Dropped IE (<11) support
 - Dropped compatibility with older (<20) Nextcloud versions
 - Dropped app-specific ajax code, now handled by SettingsController
 - Updated dependencies where applicable

lib/Controller/MetadataController.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * @author Frank de Lange
+ * @copyright 2017 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OCA\Files_Reader\Controller;
+
+use OCP\IRequest;
+use OCP\AppFramework\Controller;
+
+use OCA\Files_Reader\Service\MetadataService;
+
+class MetadataController extends Controller {
+
+    private $metadataService;
+
+	/**
+	 * @param string $AppName
+	 * @param IRequest $request
+     * @param MetadataService $metadataService
+	 */
+    public function __construct($AppName,
+                                IRequest $request,
+                                MetadataService $metadataService ) {
+
+		parent::__construct($AppName, $request);
+        $this->metadataService = $metadataService;
+    }
+
+
+	/**
+     * @brief write metadata
+     *
+     * @NoAdminRequired
+     *
+     * @param int $fileId
+     * @param string $value
+     *
+	 * @return array|\OCP\AppFramework\Http\JSONResponse
+	 */
+    public function setAll($fileId, $value) {
+        return $this->metadataService->setAll($fileId, $value);
+    }
+
+	/**
+     * @brief return metadata item
+     *
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     *
+     * @param int $fileId
+     * @param string $name
+     *
+	 * @return array|\OCP\AppFramework\Http\JSONResponse
+	 */
+    public function get($fileId, $name) {
+        return $this->metadataService->get($fileId, $name);
+    }
+
+	/**
+     * @brief write metadata item
+     *
+     * @NoAdminRequired
+     *
+     * @param int $fileId
+     * @param string $name
+     * @param string $value
+     *
+	 * @return array|\OCP\AppFramework\Http\JSONResponse
+	 */
+    public function set($fileId, $name, $value) {
+        return $this->metadataService->set($fileId, $name, $value);
+	}
+
+}