<?php

namespace Chill\PersonBundle\Controller;

use Chill\PersonBundle\Actions\Remove\PersonMove;
use Chill\PersonBundle\Entity\AccompanyingPeriod;
use Chill\PersonBundle\Entity\Person;
use Chill\PersonBundle\Entity\PersonNotDuplicate;
use Chill\PersonBundle\Form\PersonConfimDuplicateType;
use Chill\PersonBundle\Form\PersonFindManuallyDuplicateType;
use Chill\PersonBundle\Privacy\PrivacyEvent;
use Chill\PersonBundle\Repository\PersonRepository;
use Chill\PersonBundle\Search\SimilarPersonMatcher;
use http\Exception\InvalidArgumentException;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\Form\FormError;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Translation\TranslatorInterface;

class PersonDuplicateController extends Controller
{
    /**
     * @var \Chill\PersonBundle\Search\SimilarPersonMatcher
     */
    private $similarPersonMatcher;

    /**
     * @var \Symfony\Component\Translation\TranslatorInterface
     */
    private $translator;

    /**
     * @var \Chill\PersonBundle\Repository\PersonRepository
     */
    private $personRepository;

    /**
     * @var \Chill\PersonBundle\Actions\Remove\PersonMove
     */
    private $personMove;

    /**
     * @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
     */
    private $eventDispatcher;

    public function __construct(
      SimilarPersonMatcher $similarPersonMatcher,
      TranslatorInterface $translator,
      PersonRepository $personRepository,
      PersonMove $personMove,
      EventDispatcherInterface $eventDispatcher
    ) {
        $this->similarPersonMatcher = $similarPersonMatcher;
        $this->translator = $translator;
        $this->personRepository = $personRepository;
        $this->personMove = $personMove;
        $this->eventDispatcher = $eventDispatcher;
    }

    public function viewAction($person_id)
    {
        $person = $this->_getPerson($person_id);
        if ($person === null) {
            throw $this->createNotFoundException("Person with id $person_id not"
              . " found on this server");
        }

        $this->denyAccessUnlessGranted('CHILL_PERSON_DUPLICATE', $person,
          "You are not allowed to see this person.");

        $duplicatePersons = $this->similarPersonMatcher->
            matchPerson($person, 0.5, SimilarPersonMatcher::SIMILAR_SEARCH_ORDER_BY_ALPHABETICAL);

        $notDuplicatePersons = $this->getDoctrine()->getRepository(PersonNotDuplicate::class)
            ->findByNotDuplicatePerson($person);

        return $this->render('ChillPersonBundle:PersonDuplicate:view.html.twig', [
            'person' => $person,
            'duplicatePersons' => $duplicatePersons,
            'notDuplicatePersons' => $notDuplicatePersons,
        ]);
    }

    public function confirmAction($personIdFrom, $personIdTo, Request $request)
    {
        $personFrom = $this->personRepository->find($personIdFrom);
        $personTo = $this->personRepository->find($personIdTo);

        $this->denyAccessUnlessGranted('CHILL_PERSON_DUPLICATE', $personFrom,
          "You are not allowed to see this person.");

        $form = $this->createForm(PersonConfimDuplicateType::class);

        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $event = new PrivacyEvent($personFrom, array(
              'element_class' => Person::class,
              'action' => 'move'
            ));
            $event->addPerson($personTo);
            $this->eventDispatcher->dispatch(PrivacyEvent::PERSON_PRIVACY_EVENT, $event);

            $sqls = $this->personMove->getSQL($personFrom, $personTo);

            $connection = $this->getDoctrine()->getConnection();

            $connection->beginTransaction();
            foreach($sqls as $sql) {
                $connection->executeQuery($sql);
            }
            $connection->commit();

            $this->addFlash('success', $this->translator->trans('The de-duplicate operation success'));

            return $this->redirectToRoute('chill_person_duplicate_view', ['person_id' => $personTo->getId()]);
        }

        return $this->render('ChillPersonBundle:PersonDuplicate:confirm.html.twig', [
            'personFrom' => $personFrom,
            'personTo' => $personTo,
            'form' => $form->createView(),
        ]);
    }

    public function notDuplicateAction($person1_id, $person2_id, Request $request)
    {
        [$person1, $person2] = $this->_getPersonsByPriority($person1_id, $person2_id);

        $this->denyAccessUnlessGranted('CHILL_PERSON_DUPLICATE', $person1,
          "You are not allowed to see this person.");

        $personNotDuplicate = $this->getDoctrine()->getRepository(PersonNotDuplicate::class)
          ->findOneBy(['person1' => $person1, 'person2' => $person2]);

        if (!$personNotDuplicate instanceof PersonNotDuplicate) {
            $personNotDuplicate = new PersonNotDuplicate();
            $personNotDuplicate->setPerson1($person1);
            $personNotDuplicate->setPerson2($person2);
            $personNotDuplicate->setUser($this->getUser());

            $this->getDoctrine()->getManager()->persist($personNotDuplicate);
            $this->getDoctrine()->getManager()->flush();
        }

        if ($request->query->has('returnPath')) {
            return $this->redirect($request->query->get('returnPath'));
        }

        return $this->redirectToRoute('chill_person_duplicate_view', ['person_id' => $person1->getId()]);
    }

    public function removeNotDuplicateAction($person1_id, $person2_id, Request $request)
    {
        [$person1, $person2] = $this->_getPersonsByPriority($person1_id, $person2_id);

        $this->denyAccessUnlessGranted('CHILL_PERSON_DUPLICATE', $person1,
          "You are not allowed to see this person.");

        $personNotDuplicate = $this->getDoctrine()->getRepository(PersonNotDuplicate::class)
          ->findOneBy(['person1' => $person1, 'person2' => $person2]);

        if ($personNotDuplicate instanceof PersonNotDuplicate) {
            $this->getDoctrine()->getManager()->remove($personNotDuplicate);
            $this->getDoctrine()->getManager()->flush();
        }

        if ($request->query->has('returnPath')) {
            return $this->redirect($request->query->get('returnPath'));
        }

        return $this->redirectToRoute('chill_person_duplicate_view', ['person_id' => $person1->getId()]);
    }
    
       public function findManuallyDuplicateAction($person_id, Request $request)
    {
        $person = $this->_getPerson($person_id);
        if ($person === null) {
            throw $this->createNotFoundException("Person with id $person_id not"
              . " found on this server");
        }

        $this->denyAccessUnlessGranted('CHILL_PERSON_DUPLICATE', $person,
          "You are not allowed to see this person.");

        $form = $this->createForm(PersonFindManuallyDuplicateType::class);

        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $person2 = $form->get('person')->getData();

            if ($person2 === null) {
                throw $this->createNotFoundException("Person with id $person2->getId() not"
                  . " found on this server");
            }

            if ($person === $person2) {
                $this->addFlash('error', $this->translator->trans('You cannot add duplicate with same person'));
            } elseif ($person->getCenter() !== $person2->getCenter()) {
                $this->addFlash('error', $this->translator->trans('You cannot duplicate two persons in two different centers'));
            } else {

                $direction = $form->get('direction')->getData();

                if ($direction === 'starting') {
                    $params = [
                        'personIdFrom' => $person->getId(),
                        'personIdTo' => $person2->getId(),
                    ];
                } else {
                    $params = [
                        'personIdFrom' => $person2->getId(),
                        'personIdTo' => $person->getId(),
                    ];
                }

                return $this->redirectToRoute('chill_person_duplicate_confirm', $params);
            }
        }

        return $this->render('ChillPersonBundle:PersonDuplicate:find_manually.html.twig', [
            'person' => $person,
            'form' => $form->createView(),
        ]);
    }
 

    /**
     * easy getting a person by his id
     */
    private function _getPerson($id): ?Person
    {
        return $this->personRepository->find($id);
    }

    private function _getPersonsByPriority($person1_id, $person2_id)
    {
        if ($person1_id === $person2_id) {
            throw new InvalidArgumentException('Can not merge same person');
        }

        if ($person1_id > $person2_id) {
            $person1 = $this->_getPerson($person2_id);
            $person2 = $this->_getPerson($person1_id);
        } else {
            $person1 = $this->_getPerson($person1_id);
            $person2 = $this->_getPerson($person2_id);
        }

        if ($person1 === null) {
            throw $this->createNotFoundException("Person with id $person1_id not"
              . " found on this server");
        }

        if ($person2 === null) {
            throw $this->createNotFoundException("Person with id $person2_id not"
              . " found on this server");
        }

        return [$person1, $person2];
    }
}