<?php
  /**
   * Copyright (c) 2013 Owen Winkler <ringmaster@midnightcircus.com>
   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */
  
  namespace OC\Core\Command;
  
  use OC\Updater;
  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\OutputInterface;
  
  class Upgrade extends Command {
  
  	const ERROR_SUCCESS = 0;
  	const ERROR_NOT_INSTALLED = 1;
  	const ERROR_MAINTENANCE_MODE = 2;
  	const ERROR_UP_TO_DATE = 3;
  
  	protected function configure() {
  		$this
  			->setName('upgrade')
  			->setDescription('run upgrade routines')
  		;
  	}

  	/**
  	 * Execute the upgrade command
  	 *
  	 * @param InputInterface $input input interface
  	 * @param OutputInterface $output output interface
  	 */

  	protected function execute(InputInterface $input, OutputInterface $output) {
  		global $RUNTIME_NOAPPS;
  
  		$RUNTIME_NOAPPS = true; //no apps, yet
  
  		require_once \OC::$SERVERROOT . '/lib/base.php';
  
  		// Don't do anything if ownCloud has not been installed
  		if(!\OC_Config::getValue('installed', false)) {
  			$output->writeln('<error>ownCloud has not yet been installed</error>');
  			return self::ERROR_NOT_INSTALLED;
  		}
  
  		if(\OC::checkUpgrade(false)) {
  			$updater = new Updater();
  
  			$updater->listen('\OC\Updater', 'maintenanceStart', function () use($output) {
  				$output->writeln('<info>Turned on maintenance mode</info>');
  			});
  			$updater->listen('\OC\Updater', 'maintenanceEnd', function () use($output) {
  				$output->writeln('<info>Turned off maintenance mode</info>');
  				$output->writeln('<info>Update successful</info>');
  			});
  			$updater->listen('\OC\Updater', 'dbUpgrade', function () use($output) {
  				$output->writeln('<info>Updated database</info>');
  			});
  			$updater->listen('\OC\Updater', 'filecacheStart', function () use($output) {
  				$output->writeln('<info>Updating filecache, this may take really long...</info>');
  			});
  			$updater->listen('\OC\Updater', 'filecacheDone', function () use($output) {
  				$output->writeln('<info>Updated filecache</info>');
  			});
  			$updater->listen('\OC\Updater', 'filecacheProgress', function ($out) use($output) {
  				$output->writeln('... ' . $out . '% done ...');
  			});
  
  			$updater->listen('\OC\Updater', 'failure', function ($message) use($output) {
  				$output->writeln($message);
  				\OC_Config::setValue('maintenance', false);
  			});
  
  			$updater->upgrade();

  
  			$this->postUpgradeCheck($input, $output);

  			return self::ERROR_SUCCESS;
  		} else if(\OC_Config::getValue('maintenance', false)) {
  			//Possible scenario: ownCloud core is updated but an app failed
  			$output->writeln('<warning>ownCloud is in maintenance mode</warning>');
  			$output->write('<comment>Maybe an upgrade is already in process. Please check the '
  				. 'logfile (data/owncloud.log). If you want to re-run the '
  				. 'upgrade procedure, remove the "maintenance mode" from '
  				. 'config.php and call this script again.</comment>'
  				, true);
  			return self::ERROR_MAINTENANCE_MODE;
  		} else {
  			$output->writeln('<info>ownCloud is already latest version</info>');
  			return self::ERROR_UP_TO_DATE;
  		}
  	}

  
  	/**
  	 * Perform a post upgrade check (specific to the command line tool)
  	 *
  	 * @param InputInterface $input input interface
  	 * @param OutputInterface $output output interface
  	 */
  	protected function postUpgradeCheck(InputInterface $input, OutputInterface $output) {
  		$trustedDomains = \OC_Config::getValue('trusted_domains', array());
  		if (empty($trustedDomains)) {
  			$output->write(
  				'<warning>The setting "trusted_domains" could not be ' .
  				'set automatically by the upgrade script, ' .
  				'please set it manually</warning>'
  			);
  		}
  	}

  }