<?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\CMS\Installer\InstallerHelper;
use Joomla\Console\Command\AbstractCommand;
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 installing extensions
 *
 * @since  4.0.0
 */
class ExtensionInstallCommand extends AbstractCommand
{
	/**
	 * The default command name
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected static $defaultName = 'extension:install';

	/**
	 * Stores the Input Object
	 * @var InputInterface
	 * @since 4.0.0
	 */
	private $cliInput;

	/**
	 * SymfonyStyle Object
	 * @var SymfonyStyle
	 * @since 4.0.0
	 */
	private $ioStyle;

	/**
	 * Exit Code For installation failure
	 * @since
	 */
	public const INSTALLATION_FAILED = 1;

	/**
	 * Exit Code For installation Success
	 * @since
	 */
	public const INSTALLATION_SUCCESSFUL = 0;

	/**
	 * Configures the IO
	 *
	 * @param   InputInterface   $input   Console Input
	 * @param   OutputInterface  $output  Console Output
	 *
	 * @return void
	 *
	 * @since 4.0.0
	 *
	 */
	private function configureIO(InputInterface $input, OutputInterface $output): void
	{
		$this->cliInput = $input;
		$this->ioStyle = new SymfonyStyle($input, $output);
	}

	/**
	 * Initialise the command.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	protected function configure(): void
	{
		$this->addOption('path', null, InputOption::VALUE_REQUIRED, 'The path to the extension');
		$this->addOption('url', null, InputOption::VALUE_REQUIRED, 'The url to the extension');

		$help = "<info>%command.name%</info> is used to install extensions
		\nYou must provide one of the following options to the command:
		\n  --path: The path on your local filesystem to the install package
		\n  --url: The URL from where the install package should be downloaded
		\nUsage:
		\n  <info>php %command.full_name% --path=<path_to_file></info>
		\n  <info>php %command.full_name% --url=<url_to_file></info>";

		$this->setDescription('Install an extension from a URL or from a path');
		$this->setHelp($help);
	}

	/**
	 * Used for installing extension from a path
	 *
	 * @param   string  $path  Path to the extension zip file
	 *
	 * @return boolean
	 *
	 * @since 4.0.0
	 *
	 * @throws \Exception
	 */
	public function processPathInstallation($path): bool
	{
		if (!file_exists($path))
		{
			$this->ioStyle->warning('The file path specified does not exist.');

			return false;
		}

		$tmpPath = $this->getApplication()->get('tmp_path');
		$tmpPath = $tmpPath . '/' . basename($path);
		$package  = InstallerHelper::unpack($path, true);

		if ($package['type'] === false)
		{
			return false;
		}

		$jInstaller = Installer::getInstance();
		$result     = $jInstaller->install($package['extractdir']);
		InstallerHelper::cleanupInstall($tmpPath, $package['extractdir']);

		return $result;
	}


	/**
	 * Used for installing extension from a URL
	 *
	 * @param   string  $url  URL to the extension zip file
	 *
	 * @return boolean
	 *
	 * @since 4.0.0
	 *
	 * @throws \Exception
	 */
	public function processUrlInstallation($url): bool
	{
		$filename = InstallerHelper::downloadPackage($url);

		$tmpPath = $this->getApplication()->get('tmp_path');

		$path     = $tmpPath . '/' . basename($filename);
		$package  = InstallerHelper::unpack($path, true);

		if ($package['type'] === false)
		{
			return false;
		}

		$jInstaller = new Installer;
		$result     = $jInstaller->install($package['extractdir']);
		InstallerHelper::cleanupInstall($path, $package['extractdir']);

		return $result;
	}

	/**
	 * 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   4.0.0
	 */
	protected function doExecute(InputInterface $input, OutputInterface $output): int
	{
		$this->configureIO($input, $output);

		if ($path = $this->cliInput->getOption('path'))
		{
			$result = $this->processPathInstallation($path);

			if (!$result)
			{
				$this->ioStyle->error('Unable to install extension');

				return self::INSTALLATION_FAILED;
			}

			$this->ioStyle->success('Extension installed successfully.');

			return self::INSTALLATION_SUCCESSFUL;
		}
		elseif ($url = $this->cliInput->getOption('url'))
		{
			$result = $this->processUrlInstallation($url);

			if (!$result)
			{
				$this->ioStyle->error('Unable to install extension');

				return self::INSTALLATION_FAILED;
			}

			$this->ioStyle->success('Extension installed successfully.');

			return self::INSTALLATION_SUCCESSFUL;
		}

		$this->ioStyle->error('Invalid argument supplied for command.');

		return self::INSTALLATION_FAILED;
	}
}
