- 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/PreferenceController.php

@@ -0,0 +1,128 @@
+<?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\IURLGenerator;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Controller;
+
+use OCA\Files_Reader\Service\PreferenceService;
+
+class PreferenceController extends Controller {
+
+    private $urlGenerator;
+    private $preferenceService;
+
+    /**
+     * @param string $AppName
+     * @param IRequest $request
+     * @param IURLGenerator $urlGenerator
+     * @param PreferenceService $preferenceService
+     */
+    public function __construct($AppName,
+                                IRequest $request,
+                                IURLGenerator $urlGenerator,
+                                PreferenceService $preferenceService ) {
+
+		parent::__construct($AppName, $request);
+        $this->urlGenerator = $urlGenerator;
+        $this->preferenceService = $preferenceService;
+    }
+
+	/**
+     * @brief return preference for $fileId
+     *
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     *
+     * @param string $scope
+     * @param int $fileId
+     * @param string $name if null, return all preferences for $scope + $fileId 
+     *
+	 * @return array|\OCP\AppFramework\Http\JSONResponse
+	 */
+    public function get($scope, $fileId, $name) {
+        return $this->preferenceService->get($scope, $fileId, $name);
+    }
+
+	/**
+     * @brief write preference for $fileId
+     *
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     *
+     * @param string $scope
+     * @param int $fileId
+     * @param string $name
+     * @param string $value
+     *
+	 * @return array|\OCP\AppFramework\Http\JSONResponse
+	 */
+    public function set($scope, $fileId, $name, $value) {
+        return $this->preferenceService->set($scope, $fileId, $name, $value);
+	}
+
+
+	/**
+     * @brief return default preference
+     *
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     *
+     * @param string $scope
+     * @param string $name if null, return all default preferences for scope
+     *
+	 * @return array|\OCP\AppFramework\Http\JSONResponse
+	 */
+    public function getDefault($scope, $name) {
+        return $this->preferenceService->getDefault($scope, $name);
+    }
+
+	/**
+     * @brief write default preference
+     *
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     *
+     * @param string $scope
+     * @param string $name
+     * @param string $value
+     *
+	 * @return array|\OCP\AppFramework\Http\JSONResponse
+	 */
+    public function setDefault($scope, $name, $value) {
+        return $this->preferenceService->setDefault($scope, $name, $value);
+    }
+
+    /**
+     * @brief delete preference
+     *
+     * @param string $scope
+     * @param int $fileId
+     * @param string $name
+     *
+     */
+    public function delete($scope, $fileId, $name) {
+        return $this->preferenceService->delete($scope, $fileId, $name);
+    }
+
+    /**
+     * @brief delete default preference
+     *
+     * @param $scope
+     * @param $name
+     *
+     */
+    public function deleteDefault($scope, $name) {
+        return $this->preferenceService->deleteDefault($scope, $name);
+    }
+}