[4.0][CLI] Add a task to discover extensions

libraries/src/Console/ExtensionDiscoverCommand.php

@@ -0,0 +1,212 @@
+<?php
+/**
+ * Joomla! Content Management System
+ *
+ * @copyright   (C) 2020 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license    GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+namespace Joomla\CMS\Console;
+
+\defined('JPATH_PLATFORM') or die;
+
+use Joomla\CMS\Installer\Installer;
+use Joomla\Console\Command\AbstractCommand;
+use Joomla\Database\DatabaseInterface;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+/**
+ * Console command for discovering extensions
+ *
+ * @since  __DEPLOY_VERSION__
+ */
+class ExtensionDiscoverCommand extends AbstractCommand
+{
+	/**
+	 * The default command name
+	 *
+	 * @var    string
+	 * @since  __DEPLOY_VERSION__
+	 */
+	protected static $defaultName = 'extension:discover';
+
+	/**
+	 * Stores the Input Object
+	 * @var InputInterface
+	 * @since __DEPLOY_VERSION__
+	 */
+	private $cliInput;
+
+	/**
+	 * SymfonyStyle Object
+	 * @var SymfonyStyle
+	 * @since __DEPLOY_VERSION__
+	 */
+	private $ioStyle;
+
+	/**
+	 * Database connector
+	 *
+	 * @var    DatabaseInterface
+	 * @since  4.0.0
+	 */
+	private $db;
+
+	/**
+	 * Exit Code For Discover Failure
+	 * @since
+	 */
+	public const DISCOVER_FAILED = 1;
+
+	/**
+	 * Exit Code For Discover Success
+	 * @since
+	 */
+	public const DISCOVER_SUCCESSFUL = 0;
+
+	/**
+	 * Instantiate the command.
+	 *
+	 * @param   DatabaseInterface  $db  Database connector
+	 *
+	 * @since   4.0.0
+	 */
+	public function __construct(DatabaseInterface $db)
+	{
+		$this->db = $db;
+		parent::__construct();
+	}
+
+	/**
+	 * Configures the IO
+	 *
+	 * @param   InputInterface   $input   Console Input
+	 * @param   OutputInterface  $output  Console Output
+	 *
+	 * @return void
+	 *
+	 * @since __DEPLOY_VERSION__
+	 *
+	 */
+	private function configureIO(InputInterface $input, OutputInterface $output): void
+	{
+		$this->cliInput = $input;
+		$this->ioStyle = new SymfonyStyle($input, $output);
+	}
+
+	/**
+	 * Initialise the command.
+	 *
+	 * @return  void
+	 *
+	 * @since   __DEPLOY_VERSION__
+	 */
+	protected function configure(): void
+	{
+		$this->addOption('eid', null, InputOption::VALUE_REQUIRED, 'The ID of the extension to discover');
+
+		$help = "<info>%command.name%</info> is used to discover extensions
+		\nYou can provide the following option to the command:
+		\n  --eid: The ID of the extension
+		\nUsage:
+		\n  <info>php %command.full_name% --eid=<id_of_the_extension></info>";
+
+		$this->setDescription('Discover all extensions or a specified extension');
+		$this->setHelp($help);
+	}
+
+	/**
+	 * Used for discovering extensions
+	 *
+	 * @param   string  $eid  Id of the extension
+	 *
+	 * @return boolean
+	 *
+	 * @since __DEPLOY_VERSION__
+	 *
+	 * @throws \Exception
+	 */
+	public function processDiscover($eid): bool
+	{
+		$jInstaller = new Installer;
+
+		if ($eid === -1)
+		{
+			$db    = $this->db;
+			$query = $db->getQuery(true)
+				->select($db->quoteName(['extension_id']))
+				->from($db->quoteName('#__extensions'))
+				->where($db->quoteName('state') . ' = -1');
+			$db->setQuery($query);
+			$eidsToDiscover = $db->loadObjectList();
+
+			foreach ($eidsToDiscover as $eidToDiscover)
+			{
+				if (!$jInstaller->discover_install($eidToDiscover->extension_id))
+				{
+					return false;
+				}
+
+				return true;
+			}
+
+			$this->ioStyle->warning('There is no extension to discover.');
+
+			return true;
+		}
+		else
+		{
+			return $jInstaller->discover_install($eid);
+		}
+	}
+
+	/**
+	 * Internal function to execute the command.
+	 *
+	 * @param   InputInterface   $input   The input to inject into the command.
+	 * @param   OutputInterface  $output  The output to inject into the command.
+	 *
+	 * @return  integer  The command exit code
+	 *
+	 * @throws \Exception
+	 * @since   __DEPLOY_VERSION__
+	 */
+	protected function doExecute(InputInterface $input, OutputInterface $output): int
+	{
+		$this->configureIO($input, $output);
+
+		if ($eid = $this->cliInput->getOption('eid'))
+		{
+			$result = $this->processDiscover($eid);
+
+			if (!$result)
+			{
+				$this->ioStyle->error('Unable to discover extension with ID ' . $eid);
+
+				return self::DISCOVER_FAILED;
+			}
+
+			$this->ioStyle->success('Extension with ID ' . $eid . ' discovered successfully.');
+
+			return self::DISCOVER_SUCCESSFUL;
+		}
+		else
+		{
+			$result = $this->processDiscover(-1);
+
+			if (!$result)
+			{
+				$this->ioStyle->error('Unable to discover all extensions');
+
+				return self::DISCOVER_FAILED;
+			}
+
+			$this->ioStyle->success('All extensions discovered successfully.');
+
+			return self::DISCOVER_SUCCESSFUL;
+		}
+	}
+}

libraries/src/Service/Provider/Application.php

@@ -17,6 +17,7 @@
 use Joomla\CMS\Application\SiteApplication;
 use Joomla\CMS\Console\CheckJoomlaUpdatesCommand;
 use Joomla\CMS\Console\ExtensionInstallCommand;
+use Joomla\CMS\Console\ExtensionDiscoverCommand;
 use Joomla\CMS\Console\ExtensionRemoveCommand;
 use Joomla\CMS\Console\ExtensionsListCommand;
 use Joomla\CMS\Console\FinderIndexCommand;
@@ -157,6 +158,7 @@ function (Container $container)
 						CheckJoomlaUpdatesCommand::getDefaultName() => CheckJoomlaUpdatesCommand::class,
 						ExtensionRemoveCommand::getDefaultName()    => ExtensionRemoveCommand::class,
 						ExtensionInstallCommand::getDefaultName()   => ExtensionInstallCommand::class,
+						ExtensionDiscoverCommand::getDefaultName()  => ExtensionDiscoverCommand::class,
 						UpdateCoreCommand::getDefaultName()         => UpdateCoreCommand::class,
 						FinderIndexCommand::getDefaultName()        => FinderIndexCommand::class,
 					];

libraries/src/Service/Provider/Console.php

@@ -13,6 +13,7 @@
 
 use Joomla\CMS\Console\CheckJoomlaUpdatesCommand;
 use Joomla\CMS\Console\ExtensionInstallCommand;
+use Joomla\CMS\Console\ExtensionDiscoverCommand;
 use Joomla\CMS\Console\ExtensionRemoveCommand;
 use Joomla\CMS\Console\ExtensionsListCommand;
 use Joomla\CMS\Console\FinderIndexCommand;
@@ -162,6 +163,15 @@ function (Container $container)
 			true
 		);
 
+		$container->share(
+			ExtensionDiscoverCommand::class,
+			function (Container $container)
+			{
+				return new ExtensionDiscoverCommand($container->get('db'));
+			},
+			true
+		);
+
 		$container->share(
 			UpdateCoreCommand::class,
 			function (Container $container)