<?php

namespace Chill\MainBundle\Command;

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;
use League\Csv\Reader;
use Psr\Log\LoggerInterface;
use Doctrine\ORM\EntityManagerInterface;
use Chill\MainBundle\Entity\User;
use Chill\MainBundle\Notification\Mailer;
use Chill\MainBundle\Security\PasswordRecover\RecoverPasswordHelper;
use Chill\MainBundle\Security\PasswordRecover\PasswordRecoverEvent;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;

/**
 * Class ChillUserSendRenewPasswordCodeCommand
 *
 * @package Chill\MainBundle\Command
 */
class ChillUserSendRenewPasswordCodeCommand extends Command
{
    /**
     *
     * @var LoggerInterface
     */
    protected $logger;
    
    /**
     *
     * @var EntityManagerInterface
     */
    protected $em;
    
    /**
     *
     * @var Mailer
     */
    protected $mailer;
    
    /**
     *
     * @var RecoverPasswordHelper
     */
    protected $recoverPasswordHelper;
    
    /**
     *
     * @var EventDispatcherInterface
     */
    protected $eventDispatcher;
    
    /**
     * The current input interface
     *
     * @var InputInterface
     */
    private $input;
    
    /**
     * The current output interface
     *
     * @var OutputInterface
     */
    private $output;
    
    public function __construct(
        LoggerInterface $logger, 
        EntityManagerInterface $em, 
        RecoverPasswordHelper $recoverPasswordHelper, 
        EventDispatcherInterface $eventDispatcher
    ) {
        $this->logger = $logger;
        $this->em = $em;
        $this->recoverPasswordHelper = $recoverPasswordHelper;
        $this->eventDispatcher = $eventDispatcher;
        
        parent::__construct();
    }

    
    
    protected function configure()
    {
        $this
            ->setName('chill:user:send-password-recover-code')
            ->setDescription('Send a message with code to recover password')
            ->addArgument('csvfile', InputArgument::REQUIRED, 'CSV file with the list of users')
            ->addOption('template', null, InputOption::VALUE_REQUIRED, 'Template for email')
            ->addOption('expiration', null, InputOption::VALUE_REQUIRED, 'Expiration of the link, as an unix timestamp')
            ->addOption('subject', null, InputOption::VALUE_REQUIRED, 'Subject of the email', 'Recover your password')
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->input = $input;
        $this->output = $output;
        
        $reader = $this->getReader();
        
        foreach($reader->getRecords() as $offset => $r) {
            $user = $this->getUser($r);
            
            if ($user === null) {
                $this->onUserNotFound($r, $offset);
                continue;
            }
            
            $this->sendRecoverCode($user);
        }
    }
    
    protected function sendRecoverCode(User $user)
    {
        if (empty($user->getEmail())) {
            $this->logger->alert("User without email", [
                'user_id' => $user->getId(),
                'username' => $user->getUsername()
            ]);
            
            return;
        }
        
        $template = $this->input->getOption('template');
        $expiration = \DateTime::createFromFormat('U', 
            $this->input->getOption('expiration'));
        
        $this->recoverPasswordHelper
            ->sendRecoverEmail(
                $user, 
                $expiration, 
                $template, 
                [ 'expiration' => $expiration],
                false,
                [ '_locale' => 'fr' ],
                $this->input->getOption('subject')
                );
    }
    
    protected function onUserNotFound($row, $offset)
    {
        $this->logger->alert('User not found', \array_merge([
            'offset' => $offset
        ], $row));
    }
    
    protected function getUser($row)
    {
        /* @var $userRepository \Chill\MainBundle\Repository\UserRepository */
        $userRepository = $this->em->getRepository(User::class);
        
        try {
            if (\array_key_exists('email', $row)) {
                return $userRepository->findOneByUsernameOrEmail(\trim($row['email']));
            }
        } catch (\Doctrine\ORM\NoResultException $e) {
            // continue, we will try username
        }
        
        try {
            if (\array_key_exists('username', $row)) {
                return $userRepository->findOneByUsernameOrEmail(\trim($row['username']));
            }
        } catch (\Doctrine\ORM\NoResultException $e) {
            return null;
        }
    }
    
    /**
     * 
     * @return Reader
     * @throws \Exception
     */
    protected function getReader()
    {
        try {
            $reader = Reader::createFromPath($this->input->getArgument('csvfile'));
        } catch (\Exception $e) {
            $this->logger->error("The csv file could not be read", [
                'path' => $this->input->getArgument('csvfile')
            ]);
            
            throw $e;
        }
        
        $reader->setHeaderOffset(0);
        
        $headers = $reader->getHeader();
        
        if (FALSE === \in_array('username', $headers)
            && FALSE === \in_array('email', $headers)) {
            throw new \InvalidArgumentException("The csv file does not have an "
                . "username or email header");
        }
        
        return $reader;
    }

}