add admin settings

lib/Controller/CssController.php

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+<?php
+/**
+ * @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\SideMenu\Controller;
+
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http\DataDownloadResponse;
+use OCP\AppFramework\Http\Response;
+use OCP\IConfig;
+use OCP\IRequest;
+
+class CssController extends Controller
+{
+
+    /** @var \OCP\IConfig */
+    protected $config;
+
+    /**
+     * @param string $appName
+     * @param IRequest $request
+     * @param IConfig $config
+     */
+    public function __construct($appName, IRequest $request, IConfig $config)
+    {
+        parent::__construct($appName, $request);
+        $this->config = $config;
+    }
+
+    /**
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     * @PublicPage
+     *
+     * @return Response
+     */
+    public function stylesheet()
+    {
+        $parameters = [
+            '--side-menu-background-color' => $this->config->getAppValue('side_menu', 'background-color', '#333333'),
+            '--side-menu-current-app-background-color' => $this->config->getAppValue('side_menu', 'current-app-background-color', '#444444'),
+            '--side-menu-text-color' => $this->config->getAppValue('side_menu', 'text-color', '#FFFFFF'),
+            '--side-menu-opener' => $this->config->getAppValue('side_menu', 'opener', 'side-menu-opener'),
+        ];
+
+        $css = '';
+
+        foreach ($parameters as $key => $value) {
+            if ($key === '--side-menu-opener') {
+                $value = sprintf("url('../img/%s.svg')", $value);
+            }
+
+            $css.= sprintf('%s: %s;', $key, $value);
+        }
+
+        $css = sprintf(':root { %s }', $css);
+
+        return new DataDownloadResponse($css, 'stylesheet', 'text/css');
+    }
+}

lib/Settings/Admin.php

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+<?php
+/**
+ * @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\SideMenu\Settings;
+
+use OCP\AppFramework\Http\TemplateResponse;
+use OCP\IL10N;
+use OCP\ILogger;
+use OCP\Settings\ISettings;
+use OCP\IConfig;
+
+class Admin implements ISettings
+{
+    /** @var IL10N */
+    private $l;
+
+    /** @var ILogger */
+    private $logger;
+
+    /** @var IConfig */
+    private $config;
+
+    public function __construct(IL10N $l, ILogger $logger, IConfig $config) {
+        $this->l = $l;
+        $this->logger = $logger;
+        $this->config = $config;
+    }
+
+    /**
+     * @return TemplateResponse
+     */
+    public function getForm()
+    {
+        $parameters = [
+            'background-color' => $this->config->getAppValue('side_menu', 'background-color', '#333333'),
+            'current-app-background-color' => $this->config->getAppValue('side_menu', 'current-app-background-color', '#444444'),
+            'text-color' => $this->config->getAppValue('side_menu', 'text-color', '#FFFFFF'),
+            'cache' => $this->config->getAppValue('side_menu', 'cache', '0'),
+            'opener' => $this->config->getAppValue('side_menu', 'opener', 'side-menu-opener'),
+        ];
+
+        return new TemplateResponse('side_menu', 'settings/admin-form', $parameters, '');
+    }
+
+    /**
+     * @return string the section ID, e.g. 'sharing'
+     */
+    public function getSection()
+    {
+        return 'side_menu';
+    }
+
+    /**
+     * @return int whether the form should be rather on the top or bottom of
+     * the admin section. The forms are arranged in ascending order of the
+     * priority values. It is required to return a value between 0 and 100.
+     *
+     * E.g.: 70
+     */
+    public function getPriority()
+    {
+        return 70;
+    }
+}

lib/Settings/Section.php

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+<?php
+/**
+ * @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\SideMenu\Settings;
+
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\Settings\IIconSection;
+
+class Section implements IIconSection
+{
+    /** @var IL10N */
+    private $l;
+
+    /** @var IURLGenerator */
+    private $url;
+
+    /**
+     * @param IURLGenerator $url
+     * @param IL10N $l
+     */
+    public function __construct(IURLGenerator $url, IL10N $l)
+    {
+        $this->url = $url;
+        $this->l = $l;
+    }
+
+    /**
+     * returns the ID of the section. It is supposed to be a lower case string,
+     * e.g. 'ldap'
+     *
+     * @returns string
+     */
+    public function getID()
+    {
+        return 'side_menu';
+    }
+
+    /**
+     * returns the translated name as it should be displayed, e.g. 'LDAP / AD
+     * integration'. Use the L10N service to translate it.
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->l->t('Side menu');
+    }
+
+    /**
+     * @return int whether the form should be rather on the top or bottom of
+     * the settings navigation. The sections are arranged in ascending order of
+     * the priority values. It is required to return a value between 0 and 99.
+     *
+     * E.g.: 70
+     */
+    public function getPriority()
+    {
+        return 70;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getIcon()
+    {
+		return $this->url->imagePath('theming', 'app-dark.svg');
+    }
+}