Implement an basic search provider. Just search within the title and main note.

On the other hand, it implements consistent urls, which allow you to mark a
note, tag or color as a favorite in the browser to easily access the notes.

lib/AppInfo/Application.php

@@ -31,6 +31,7 @@ use OCP\IL10N;
 use OCP\IURLGenerator;
 use OCP\IServerContainer;
 
+use OCA\QuickNotes\Search\NoteSearchProvider;
 
 class Application extends App implements IBootstrap {
 
@@ -45,6 +46,7 @@ class Application extends App implements IBootstrap {
 	}
 
 	public function register(IRegistrationContext $context): void {
+		$context->registerSearchProvider(NoteSearchProvider::class);
 		$context->registerCapability(Capabilities::class);
 	}
 

lib/Db/NoteMapper.php

@@ -31,6 +31,34 @@ class NoteMapper extends QBMapper {
 		return $this->findEntity($qb);
 	}
 
+	/**
+	 * @param string $userId
+	 * @param string $queryStr
+	 * @throws \OCP\AppFramework\Db\DoesNotExistException if not found
+	 * @throws \OCP\AppFramework\Db\MultipleObjectsReturnedException if more than one result
+	 * @return Note[]
+	 */
+	public function findLike($userId, $queryStr, $offset = null, $limit = null) {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select('*')
+			->from($this->tableName)
+			->where($qb->expr()->eq('user_id', $qb->createNamedParameter($userId, IQueryBuilder::PARAM_STR)))
+			->andWhere(
+				$qb->expr()->orX(
+					$qb->expr()->like($qb->func()->lower('title'), $qb->createParameter('query')),
+					$qb->expr()->like($qb->func()->lower('content'), $qb->createParameter('query'))
+				)
+			);
+
+		$query = '%' . $this->db->escapeLikeParameter(strtolower($queryStr)) . '%';
+		$qb->setParameter('query', $query);
+
+		$qb->setFirstResult($offset);
+		$qb->setMaxResults($limit);
+
+		return $this->findEntities($qb);
+	}
+
 	/**
 	 * @param int $id
 	 * @throws \OCP\AppFramework\Db\DoesNotExistException if not found

lib/Search/NoteSearchProvider.php

@@ -0,0 +1,114 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2021 Matias De lellis <mati86dl@gmail.com>
+ *
+ * @author Matias De lellis <mati86dl@gmail.com>
+ *
+ * @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\QuickNotes\Search;
+
+use OCP\Search\IProvider;
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\IUser;
+use OCP\Search\ISearchQuery;
+use OCP\Search\SearchResult;
+use OCP\Search\SearchResultEntry;
+
+use OCA\QuickNotes\Db\Note;
+use OCA\QuickNotes\Db\NoteMapper;
+
+/**
+ * Provide search results from the 'quicknotes' app
+ */
+class NoteSearchProvider implements IProvider {
+
+	/** @var NoteMapper noteMapper */
+	private $noteMapper;
+
+	/** @var IL10N */
+	private $l10n;
+
+	/** @var IURLGenerator */
+	private $urlGenerator;
+
+	public function __construct(
+		IL10N         $l10n,
+		IURLGenerator $urlGenerator,
+		NoteMapper    $noteMapper
+	) {
+		$this->l10n         = $l10n;
+		$this->urlGenerator = $urlGenerator;
+		$this->noteMapper   = $noteMapper;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getId(): string {
+		return 'quicknotes';
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getName(): string {
+		return $this->l10n->t('Quick notes');
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getOrder(string $route, array $routeParameters): int {
+		if (strpos($route, 'quicknotes.') === 0) {
+			return -1;
+		}
+		return 10;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function search(IUser $user, ISearchQuery $query) : SearchResult {
+		$page = $query->getCursor() ?? 0;
+		$limit = $query->getLimit();
+		return SearchResult::paginated(
+			$this->l10n->t('Quick notes'),
+			array_map(function (Note $result) {
+				$noteId = $result->getId();
+				$noteTitle = strip_tags($result->getTitle());
+				return new SearchResultEntry(
+					'',
+					$noteTitle,
+					'',
+					$this->urlGenerator->linkToRoute('quicknotes.page.index', ['n' => $noteId]),
+					'icon-edit',
+					true,
+				);
+			},
+			$this->noteMapper->findLike($user->getUID(),
+				$query->getTerm(),
+				$page * $limit,
+				$limit)
+			),
+			$page);
+	}
+
+}