<?php
/**
 * Shopware 5
 * Copyright (c) shopware AG
 *
 * According to our dual licensing model, this program can be used either
 * under the terms of the GNU Affero General Public License, version 3,
 * or under a proprietary license.
 *
 * The texts of the GNU Affero General Public License with an additional
 * permission and of our proprietary license can be found at and
 * in the LICENSE file you have received along with this program.
 *
 * 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.
 *
 * "Shopware" is a registered trademark of shopware AG.
 * The licensing of the program under the AGPLv3 does not imply a
 * trademark license. Therefore any rights, title and interest in
 * our trademarks remain entirely with us.
 */

namespace Shopware\Commands;

use Shopware\Components\Theme\Generator;
use Shopware\Components\Theme\Installer;
use Shopware\Models\Shop\Template;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\Output;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @category  Shopware
 * @package   Shopware\Components\Console\Command
 * @copyright Copyright (c) shopware AG (http://www.shopware.de)
 */
class ThemeCreateCommand extends ShopwareCommand
{
    private $repository;

    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('sw:theme:create')
            ->setDescription('Creates a theme.')
            ->addArgument(
                'parent',
                InputArgument::REQUIRED,
                'Name of the theme which should be extended.'
            )
            ->addArgument(
                'template',
                InputArgument::REQUIRED,
                'Name of the theme directory.'
            )
            ->addArgument(
                'name',
                InputArgument::REQUIRED,
                'Name of the theme readable in theme manager.'
            )
            ->addOption(
                'description',
                null,
                InputOption::VALUE_REQUIRED,
                'Description of the theme to be created.'
            )
            ->addOption(
                'author',
                null,
                InputOption::VALUE_REQUIRED,
                'Author of the theme to be created.'
            )
            ->addOption(
                'license',
                null,
                InputOption::VALUE_REQUIRED,
                'Licence of the theme to be created.'
            )
            ->setHelp(
                <<<EOF
                The <info>%command.name%</info> creates a theme.
EOF
            );
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $arguments = $input->getArguments();

        /** @var Installer $themeInstaller */
        $themeInstaller = $this->container->get('theme_installer');
        $themeInstaller->synchronize();

        if ($this->getRepository()->findOneByTemplate($arguments['template'])) {
            $output->writeln('A theme with that name already exists');
            return 1;
        }

        /** @var Template $parent */
        $parent = $this->getRepository()->findOneByTemplate($arguments['parent']);

        if (!$parent instanceof Template) {
            $output->writeln(
                sprintf(
                    'Shop template by template name "%s" not found',
                    $arguments['parent']
                )
            );
            return 1;
        }

        $arguments = array_merge($arguments, $this->dialog($input, $output));

        /** @var Generator $themeGenerator */
        $themeGenerator = $this->container->get('theme_generator');
        $themeGenerator->generateTheme($arguments, $parent);

        $output->writeln(sprintf('Theme "%s" has been created successfully.', $arguments['name']));
    }

    /**
     * Helper function to get the repository of the configured model.
     * @return \Shopware\Models\Shop\Template
     */
    private function getRepository()
    {
        if ($this->repository === null) {
            $this->repository = $this->container->get('models')->getRepository('Shopware\Models\Shop\Template');
        }
        return $this->repository;
    }

    /**
     * Helper function to ask for optional data
     * @param InputInterface $input
     * @param OutputInterface $output
     * @return array
     */
    private function dialog(InputInterface $input, OutputInterface $output)
    {
        $options = array();

        $options['description'] = $this->askForOptionalData($input, $output, 'description');
        $options['author'] = $this->askForOptionalData($input, $output, 'author');
        $options['license'] = $this->askForOptionalData($input, $output, 'license');

        return $options;
    }

    /**
     * Helper function to ask the user a question
     * @param InputInterface $input
     * @param OutputInterface $output
     * @param $optionKey
     * @return mixed
     */
    private function askForOptionalData(InputInterface $input, OutputInterface $output, $optionKey)
    {
        $optionValue = $input->getOption($optionKey);

        if (empty($optionValue)) {
            $helper = $this->getHelper('dialog');
            $question = sprintf('Please enter the %s: ', $optionKey);
            $optionValue = $helper->ask($output, $question);
        }

        return $optionValue;
    }
}
