implement dashboard API for clients, new WidgetItem class, new IAPIWidget interface

Signed-off-by: Julien Veyssier <eneiluj@posteo.net>

apps/dashboard/appinfo/routes.php

@@ -31,5 +31,8 @@ return [
 		['name' => 'dashboard#updateStatuses', 'url' => '/statuses', 'verb' => 'POST'],
 		['name' => 'dashboard#getBackground', 'url' => '/background', 'verb' => 'GET'],
 		['name' => 'dashboard#setBackground', 'url' => '/background/{type}', 'verb' => 'POST'],
+	],
+	'ocs' => [
+		['name' => 'dashboardApi#getWidgetItems', 'url' => '/api/v1/widget-items', 'verb' => 'GET'],
 	]
 ];

apps/dashboard/lib/Controller/DashboardApiController.php

@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2021 Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @author Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @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\Dashboard\Controller;
+
+use OCP\AppFramework\OCSController;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\Dashboard\IManager;
+use OCP\IConfig;
+use OCP\IRequest;
+
+use OCP\Dashboard\IAPIWidget;
+use OCP\Dashboard\Model\WidgetItem;
+
+class DashboardApiController extends OCSController {
+
+	/** @var IManager */
+	private $dashboardManager;
+	/** @var IConfig */
+	private $config;
+	/** @var string|null */
+	private $userId;
+
+	public function __construct(string $appName,
+								IRequest $request,
+								IManager $dashboardManager,
+								IConfig $config,
+								?string $userId) {
+		parent::__construct($appName, $request);
+
+		$this->dashboardManager = $dashboardManager;
+		$this->config = $config;
+		$this->userId = $userId;
+	}
+
+	/**
+	 * Example request with Curl:
+	 * curl -u user:passwd http://my.nc/ocs/v2.php/apps/dashboard/api/v1/widget-items -H Content-Type:application/json -X GET -d '{"sinceIds":{"github_notifications":"2021-03-22T15:01:10Z"}}'
+	 *
+	 * @param array $sinceIds Array indexed by widget Ids, contains date/id from which we want the new items
+	 * @param int $limit Limit number of result items per widget
+	 *
+	 * @NoAdminRequired
+	 * @NoCSRFRequired
+	 */
+	public function getWidgetItems(array $sinceIds = [], int $limit = 7): DataResponse {
+		$items = [];
+
+		$systemDefault = $this->config->getAppValue('dashboard', 'layout', 'recommendations,spreed,mail,calendar');
+		$userLayout = explode(',', $this->config->getUserValue($this->userId, 'dashboard', 'layout', $systemDefault));
+
+		$widgets = $this->dashboardManager->getWidgets();
+		foreach ($widgets as $widget) {
+			if ($widget instanceof IAPIWidget && in_array($widget->getId(), $userLayout)) {
+				$items[$widget->getId()] = array_map(function (WidgetItem $item) {
+					return $item->jsonSerialize();
+				}, $widget->getItems($this->userId, $sinceIds[$widget->getId()] ?? null, $limit));
+			}
+		}
+
+		return new DataResponse($items);
+	}
+}

lib/public/Dashboard/IAPIWidget.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2021 Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @author Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @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 OCP\Dashboard;
+
+/**
+ * interface IAPIWidget
+ *
+ * @since 22.0.0
+ */
+interface IAPIWidget extends IWidget {
+
+	/**
+	 * @return \OCP\Dashboard\Model\WidgetItem[] The widget items
+	 * @since 22.0.0
+	 */
+	public function getItems(string $userId, ?string $since = null, int $limit = 7): array;
+}

lib/public/Dashboard/Model/WidgetItem.php

@@ -0,0 +1,149 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2021, Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @author Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @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 OCP\Dashboard\Model;
+
+use JsonSerializable;
+
+/**
+ * Interface WidgetItem
+ *
+ * This class is used by IAPIWidget interface.
+ * It represents an widget item data that can be provided to clients via the Dashboard API
+ * @see IAPIWidget::getWidgetItems
+ *
+ * @since 22.0.0
+ *
+ */
+final class WidgetItem implements JsonSerializable {
+	/** @var string */
+	private $title = '';
+
+	/** @var string */
+	private $subtitle = '';
+
+	/** @var string */
+	private $link = '';
+
+	/** @var string */
+	private $iconUrl = '';
+
+	/** @var string
+	 * Timestamp or ID used by the dashboard API to avoid getting already retrieved items
+	 */
+	private $sinceId = '';
+
+
+	/**
+	 * WidgetItem constructor
+	 *
+	 * @since 22.0.0
+	 *
+	 * @param string $type
+	 */
+	public function __construct(string $title = '',
+								string $subtitle = '',
+								string $link = '',
+								string $iconUrl = '',
+								string $sinceId = '') {
+		$this->title = $title;
+		$this->subtitle = $subtitle;
+		$this->iconUrl = $iconUrl;
+		$this->link = $link;
+		$this->sinceId = $sinceId;
+	}
+
+	/**
+	 * Get the item title
+	 *
+	 * @since 22.0.0
+	 *
+	 * @return string
+	 */
+	public function getTitle(): string {
+		return $this->title;
+	}
+
+	/**
+	 * Get the item subtitle
+	 *
+	 * @since 22.0.0
+	 *
+	 * @return string
+	 */
+	public function getSubtitle(): string {
+		return $this->subtitle;
+	}
+
+	/**
+	 * Get the item link
+	 *
+	 * @since 22.0.0
+	 *
+	 * @return string
+	 */
+	public function getLink(): string {
+		return $this->link;
+	}
+
+	/**
+	 * Get the item icon URL
+	 * The icon should be a square svg or a jpg/png of at least 44x44px
+	 *
+	 * @since 22.0.0
+	 *
+	 * @return string
+	 */
+	public function getIconUrl(): string {
+		return $this->iconUrl;
+	}
+
+	/**
+	 * Get the item since ID
+	 *
+	 * @since 22.0.0
+	 *
+	 * @return string
+	 */
+	public function getSinceId(): string {
+		return $this->sinceId;
+	}
+
+	/**
+	 * @since 22.0.0
+	 *
+	 * @return array
+	 */
+	public function jsonSerialize(): array {
+		return [
+			'subtitle' => $this->getSubtitle(),
+			'title' => $this->getTitle(),
+			'link' => $this->getLink(),
+			'iconUrl' => $this->getIconUrl(),
+			'sinceId' => $this->getSinceId(),
+		];
+	}
+}