<?php
/*
 * Copyright (C) 2016-2019 Champs-Libres <info@champs-libres.coop>
 *
 * 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 Chill\PersonBundle\Command;

use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Chill\PersonBundle\Actions\Remove\PersonMove;
use Doctrine\ORM\EntityManagerInterface;
use Chill\PersonBundle\Entity\Person;
use Symfony\Component\Console\Exception\RuntimeException;
use Psr\Log\LoggerInterface;

class ChillPersonMoveCommand extends ContainerAwareCommand
{
    /**
     *
     * @var PersonMove
     */
    protected $mover;
    
    /**
     *
     * @var EntityManagerInterface
     */
    protected $em;
    
    /**
     *
     * @var LoggerInterface
     */
    protected $chillLogger;
    
    public function __construct(
        PersonMove $mover, 
        EntityManagerInterface $em,
        LoggerInterface $chillLogger
    ) {
        parent::__construct('chill:person:move');
        
        $this->mover = $mover;
        $this->em = $em;
        $this->chillLogger = $chillLogger;
    }
    
    protected function configure()
    {
        $this
            ->setName('chill:person:move')
            ->setDescription('Move all the associated entities on a "from" person to a "to" person and remove the old person')
            ->addOption('from', 'f', InputOption::VALUE_REQUIRED, "The person id to delete, all associated data will be moved before")
            ->addOption('to', 't', InputOption::VALUE_REQUIRED, "The person id which will received data")
            ->addOption('dump-sql', null, InputOption::VALUE_NONE, "dump sql to stdout")
            ->addOption('force', null, InputOption::VALUE_NONE, "execute sql instead of dumping it")
            ->addOption('delete-entity', null, InputOption::VALUE_REQUIRED|InputOption::VALUE_IS_ARRAY, "entity to delete", [])
        ;
    }
    
    protected function interact(InputInterface $input, OutputInterface $output)
    {
        if (FALSE === $input->hasOption('dump-sql') && FALSE === $input->hasOption('force')) {
            $msg = "You must use \"--dump-sql\" or \"--force\"";
            throw new RuntimeException($msg);
        }
        
        foreach (["from", "to"] as $name) {
            if (empty($input->getOption($name))) {
                throw new RuntimeException("You must set a \"$name\" option");
            }
            $id = $input->getOption($name);
            if (\ctype_digit($id) === FALSE) {
                throw new RuntimeException("The id in \"$name\" field does not contains "
                    . "only digits: $id");
            }
        } 
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $repository = $this->em->getRepository(Person::class);
        $from = $repository->find($input->getOption('from'));
        $to   = $repository->find($input->getOption('to'));
        $deleteEntities = $input->getOption('delete-entity');
        
        if ($from === NULL) {
            throw new RuntimeException(sprintf("Person \"from\" with id %d not found", $input->getOption('from')));
        }
        if ($to === NULL) {
            throw new RuntimeException(sprintf("Person \"to\" with id %d not found", $input->getOption('to')));
        }
        
        $sqls = $this->mover->getSQL($from, $to, $deleteEntities);
        
        if ($input->getOption('dump-sql')) {
            foreach($sqls as $sql) {
                $output->writeln($sql);
            }
        } else {
            $ctxt = $this->buildLoggingContext($from, $to, $deleteEntities, $sqls);
            $this->chillLogger->notice("Trying to move a person from command line", $ctxt);
            $connection = $this->em->getConnection();
            $connection->beginTransaction();
            foreach($sqls as $sql) {
                if ($output->isVerbose()) {
                    $output->writeln($sql);
                }
                $connection->executeQuery($sql);
            }
            $connection->commit();
            
            $this->chillLogger->notice("Move a person from command line succeeded", $ctxt);
        }
    }
    
    protected function buildLoggingContext(Person $from, Person $to, $deleteEntities, $sqls)
    {
        $ctxt = [
            'from' => $from->getId(),
            'to' => $to->getId()
        ];
        
        foreach ($deleteEntities as $key => $de) {
            $ctxt['delete_entity_'.$key] = $de;
        }
        foreach ($sqls as $key => $sql) {
            $ctxt['sql_'.$key] = $sql;
        }
        
        return $ctxt;
    }

}