<?php

namespace Chill\PersonBundle\Household;

use Symfony\Component\Validator\ConstraintViolationListInterface;
use Symfony\Component\Validator\ConstraintViolationList;
use Doctrine\Common\Collections\Criteria;
use Chill\PersonBundle\Entity\Household\HouseholdMember;
use Chill\PersonBundle\Entity\Household\Position;
use Chill\PersonBundle\Entity\Household\Household;
use Chill\PersonBundle\Entity\Person;
use Symfony\Component\Validator\Validator\ValidatorInterface;


class MembersEditor
{
    private ValidatorInterface $validator;
    private ?Household $household = null;

    private array $persistables = [];
    private array $membershipsAffected = [];

    public const VALIDATION_GROUP = 'household_memberships';

    public function __construct(ValidatorInterface $validator, ?Household $household)
    {
        $this->validator = $validator;
        $this->household = $household;
    }
    
    public function addMovement(\DateTimeImmutable $date, Person $person, Position $position, ?bool $holder = false, ?string $comment = null): self
    {
        if (NULL === $this->household) {
            throw new \LogicException("You must define a household first");
        }

        $membership = (new HouseholdMember())
            ->setStartDate($date)
            ->setPerson($person)
            ->setPosition($position)
            ->setHolder($holder)
            ->setComment($comment)
            ;
        $this->household->addMember($membership);

        if ($position->getShareHousehold()) {
            foreach ($person->getHouseholdParticipationsShareHousehold() as $participation) {
                if ($participation === $membership) {
                    continue;
                }

                if ($participation->getStartDate() > $membership->getStartDate()) {
                    continue;
                }

                if ($participation->getEndDate() === NULL || $participation->getEndDate() > $date) {
                    $participation->setEndDate($date);
                    $this->membershipsAffected[] = $participation;
                }
            }
        }

        $this->membershipsAffected[] = $membership;
        $this->persistables[] = $membership;

        return $this;
    }

    public function leaveMovement(
        \DateTimeImmutable $date,
        Person $person
    ): self {
        $criteria = new Criteria();
        $expr = Criteria::expr();

        $criteria->where(
            $expr->andX(
                $expr->lt('startDate', $date),
                $expr->isNull('endDate', $date)
            )
        );

        $participations = $person->getHouseholdParticipations()
            ->matching($criteria)
            ;

        foreach ($participations as $participation) {
            $participation->setEndDate($date);
            $this->membershipsAffected[] = $participation;
        }

        return $this;
    }


    public function validate(): ConstraintViolationListInterface
    {
        if ($this->hasHousehold()) {
            $list = $this->validator
                ->validate($this->getHousehold(), null, [ self::VALIDATION_GROUP ]);
        } else {
            $list = new ConstraintViolationList();
        }

        foreach ($this->membershipsAffected as $m) {
            $list->addAll($this->validator->validate($m, null, [ self::VALIDATION_GROUP ]));
        }

        return $list;
    }

    public function getPersistable(): array
    {
        return $this->persistables;
    }


    public function getHousehold(): ?Household
    {
        return $this->household;
    }

    public function hasHousehold(): bool
    {
        return $this->household !== null;
    }
}