Introduce Setup Check

README.md

@@ -81,6 +81,14 @@ apt-get install tesseract-ocr-deu
 apt-get install tesseract-ocr-chi-sim
 ```
 
+### Setup Checks
+
+The app will perform some [Setup Checks](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/security_setup_warnings.html) to verify your installation. If there is any problem with your backend setup, you'll see an error printed in Nextcloud under `Administration Settings` → `Overview` → `Security & setup warnings`.
+
+<p align="center">
+  <img width="50%" src="doc/img/setup_checks.jpg" alt="Setup checks">
+</p>
+
 ## Usage
 You can configure the OCR processing via Nextcloud's workflow engine. Therefore configure a new flow via `Settings` &#8594; `Flow` &#8594; `Add new flow` (if you don't see `OCR file` here the app isn't installed properly or you forgot to activate it).
 

lib/AppInfo/Application.php

@@ -45,6 +45,7 @@
 use OCA\WorkflowOcr\Service\NotificationService;
 use OCA\WorkflowOcr\Service\OcrBackendInfoService;
 use OCA\WorkflowOcr\Service\OcrService;
+use OCA\WorkflowOcr\SetupChecks\OcrMyPdfCheck;
 use OCA\WorkflowOcr\Wrapper\CommandWrapper;
 use OCA\WorkflowOcr\Wrapper\Filesystem;
 use OCA\WorkflowOcr\Wrapper\ICommand;
@@ -99,6 +100,7 @@ public function register(IRegistrationContext $context): void {
 
 		$context->registerEventListener(RegisterOperationsEvent::class, RegisterFlowOperationsListener::class);
 		$context->registerNotifierService(Notifier::class);
+		$context->registerSetupCheck(OcrMyPdfCheck::class);
 	}
 
 	/**

lib/SetupChecks/OcrMyPdfCheck.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2024 Robin Windey <[email protected]>
+ *
+ * @author Robin Windey <[email protected]>
+ *
+ * @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\WorkflowOcr\SetupChecks;
+
+use OCA\WorkflowOcr\Wrapper\ICommand;
+use OCP\IL10N;
+use OCP\SetupCheck\ISetupCheck;
+use OCP\SetupCheck\SetupResult;
+
+class OcrMyPdfCheck implements ISetupCheck {
+	public function __construct(
+		private IL10N $l10n,
+		private ICommand $command,
+	) {
+	}
+
+	public function getCategory(): string {
+		return 'system';
+	}
+
+	public function getName(): string {
+		return $this->l10n->t('Is OCRmyPDF installed');
+	}
+
+	public function run(): SetupResult {
+		$this->command->setCommand('ocrmypdf --version')->execute();
+		if ($this->command->getExitCode() === 127) {
+			return SetupResult::error($this->l10n->t('OCRmyPDF CLI is not installed.'), 'https://github.com/R0Wi-DEV/workflow_ocr?tab=readme-ov-file#backend');
+		}
+		if ($this->command->getExitCode() !== 0) {
+			return SetupResult::error($this->l10n->t('OCRmyPDF CLI is not working correctly. Error was: %1$s', [$this->command->getError()]));
+		}
+		$versionOutput = $this->command->getOutput();
+		return SetupResult::success($this->l10n->t('OCRmyPDF is installed and has version %1$s.', [$versionOutput]));
+	}
+}

tests/Unit/SetupChecks/OcrMyPdfCheckTest.php

@@ -0,0 +1,103 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2024 Robin Windey <[email protected]>
+ *
+ * @author Robin Windey <[email protected]>
+ *
+ * @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\WorkflowOcr\Tests\Unit\SetupChecks;
+
+use OCA\WorkflowOcr\SetupChecks\OcrMyPdfCheck;
+use OCA\WorkflowOcr\Wrapper\ICommand;
+use OCP\IL10N;
+use OCP\SetupCheck\SetupResult;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class OcrMyPdfCheckTest extends TestCase {
+	/** @var IL10N|MockObject */
+	private $l10n;
+	/** @var ICommand|MockObject */
+	private $command;
+	/** @var OcrMyPdfCheck */
+	private $ocrMyPdfCheck;
+
+	protected function setUp(): void {
+		$this->l10n = $this->createMock(IL10N::class);
+		$this->command = $this->createMock(ICommand::class);
+		$this->ocrMyPdfCheck = new OcrMyPdfCheck($this->l10n, $this->command);
+	}
+
+	public function testGetCategory(): void {
+		$this->assertEquals('system', $this->ocrMyPdfCheck->getCategory());
+	}
+
+	public function testGetName(): void {
+		$this->l10n->method('t')->willReturn('Is OCRmyPDF installed');
+		$this->assertEquals('Is OCRmyPDF installed', $this->ocrMyPdfCheck->getName());
+	}
+
+	public function testRunOcrMyPdfNotInstalled(): void {
+		$this->command->method('setCommand')->willReturnSelf();
+		$this->command->method('execute')->willReturn(true);
+		$this->command->method('getExitCode')->willReturn(127);
+
+		$this->l10n->method('t')->willReturn('OCRmyPDF CLI is not installed.');
+
+		$result = $this->ocrMyPdfCheck->run();
+		$this->assertInstanceOf(SetupResult::class, $result);
+		$this->assertEquals(SetupResult::ERROR, $result->getSeverity());
+		$this->assertEquals('OCRmyPDF CLI is not installed.', $result->getDescription());
+	}
+
+	public function testRunOcrMyPdfNotWorkingCorrectly(): void {
+		$this->command->method('setCommand')->willReturnSelf();
+		$this->command->method('execute')->willReturn(true);
+		$this->command->method('getExitCode')->willReturn(1);
+		$this->command->method('getError')->willReturn('Some error');
+
+		$this->l10n->expects($this->once())->method('t')
+			->with('OCRmyPDF CLI is not working correctly. Error was: %1$s', ['Some error'])
+			->willReturn('OCRmyPDF CLI is not working correctly. Error was: Some error');
+
+		$result = $this->ocrMyPdfCheck->run();
+		$this->assertInstanceOf(SetupResult::class, $result);
+		$this->assertEquals(SetupResult::ERROR, $result->getSeverity());
+		$this->assertEquals('OCRmyPDF CLI is not working correctly. Error was: Some error', $result->getDescription());
+	}
+
+	public function testRunOcrMyPdfInstalled(): void {
+		$this->command->method('setCommand')->willReturnSelf();
+		$this->command->method('execute')->willReturn(true);
+		$this->command->method('getExitCode')->willReturn(0);
+		$this->command->method('getOutput')->willReturn('12.0.0');
+
+		$this->l10n->expects($this->once())->method('t')
+			->with('OCRmyPDF is installed and has version %1$s.', ['12.0.0'])
+			->willReturn('OCRmyPDF is installed and has version 12.0.0.');
+
+		$result = $this->ocrMyPdfCheck->run();
+		$this->assertInstanceOf(SetupResult::class, $result);
+		$this->assertEquals(SetupResult::SUCCESS, $result->getSeverity());
+		$this->assertEquals('OCRmyPDF is installed and has version 12.0.0.', $result->getDescription());
+	}
+}