- 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/Listeners/CSPListener.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @author Frank de Lange
+ * @copyright 2022 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\Listeners;
+
+use OCP\AppFramework\Http\EmptyContentSecurityPolicy;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Security\CSP\AddContentSecurityPolicyEvent;
+
+class CSPListener implements IEventListener {
+        public function handle(Event $event): void {
+                if (!$event instanceof AddContentSecurityPolicyEvent) {
+                        return;
+                }
+
+                $csp = new EmptyContentSecurityPolicy();
+                $csp->addAllowedFrameDomain('\'self\'');
+                $event->addPolicy($csp);
+        }
+}

lib/Listeners/LoadPublicViewerListener.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @author Frank de Lange
+ * @copyright 2022 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\Listeners;
+
+use OCA\Files_Reader\AppInfo\Application;
+use OCP\AppFramework\Http\Events\BeforeTemplateRenderedEvent;
+use OCP\AppFramework\Http\TemplateResponse;
+use OCP\AppFramework\Services\IInitialState;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Util;
+
+class LoadPublicViewerListener implements IEventListener {
+        private IInitialState $initialStateService;
+
+        public function __construct(
+                IInitialState $initialStateService,
+        ) {
+                $this->initialStateService = $initialStateService;
+        }
+
+        public function handle(Event $event): void {
+                if (!$event instanceof BeforeTemplateRenderedEvent) {
+                        return;
+                }
+
+                // Make sure we are on a public page rendering
+                if ($event->getResponse()->getRenderAs() !== TemplateResponse::RENDER_AS_PUBLIC) {
+                        return;
+                }
+                $this->initialStateService->provideInitialState('epub_enabled', 'true');
+                $this->initialStateService->provideInitialState('pdf_enabled', 'true');
+                $this->initialStateService->provideInitialState('cbx_enabled', 'true');
+                Util::addScript(Application::APP_ID, 'plugin-public');
+        }
+}

lib/Listeners/LoadViewerListener.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @author Frank de Lange
+ * @copyright 2022 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\Listeners;
+
+use OCA\Files_Reader\AppInfo\Application;
+use OCA\Viewer\Event\LoadViewer;
+use OCP\AppFramework\Services\IInitialState;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Util;
+use OCP\IConfig;
+use OCP\IUserSession;
+
+class LoadViewerListener implements IEventListener {
+	private IInitialState $initialStateService;
+        private IConfig $config;
+        private string $userId;
+
+	
+
+        public function __construct(
+                IInitialState $initialStateService,
+		IConfig $config,
+		string $userId
+        ) {
+                $this->initialStateService = $initialStateService;
+		$this->config = $config;
+		$this->userId = $userId;
+        }
+
+        public function handle(Event $event): void {
+                if (!($event instanceof LoadViewer || $event instanceof LoadAdditionalScriptsEvent)) {
+                        return;
+                }
+		$this->initialStateService->provideInitialState('epub_enabled', $this->config->getUserValue($this->userId, Application::APP_ID, 'epub_enable'));
+		$this->initialStateService->provideInitialState('pdf_enabled', $this->config->getUserValue($this->userId, Application::APP_ID, 'pdf_enable'));
+		$this->initialStateService->provideInitialState('cbx_enabled', $this->config->getUserValue($this->userId, Application::APP_ID, 'cbx_enable'));
+                Util::addScript(Application::APP_ID, 'plugin');
+        }
+}