<?php

/**
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Chill\CalendarBundle\Entity;

use Chill\ActivityBundle\Entity\Activity;
use Chill\MainBundle\Doctrine\Model\TrackCreationInterface;
use Chill\MainBundle\Doctrine\Model\TrackCreationTrait;
use Chill\MainBundle\Doctrine\Model\TrackUpdateInterface;
use Chill\MainBundle\Doctrine\Model\TrackUpdateTrait;
use Chill\MainBundle\Entity\Embeddable\CommentEmbeddable;
use Chill\MainBundle\Entity\Embeddable\PrivateCommentEmbeddable;
use Chill\MainBundle\Entity\Location;
use Chill\MainBundle\Entity\User;
use Chill\PersonBundle\Entity\AccompanyingPeriod;
use Chill\PersonBundle\Entity\Person;
use Chill\ThirdPartyBundle\Entity\ThirdParty;
use DateInterval;
use DateTimeImmutable;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\Common\Collections\Criteria;
use Doctrine\ORM\Mapping as ORM;
use LogicException;
use Symfony\Component\Serializer\Annotation as Serializer;
use Symfony\Component\Validator\Constraints\NotBlank;

use Symfony\Component\Validator\Constraints\Range;
use Symfony\Component\Validator\Mapping\ClassMetadata;
use function in_array;

/**
 * @ORM\Table(name="chill_calendar.calendar", indexes={@ORM\Index(name="idx_calendar_remote", columns={"remoteId"})}))
 * @ORM\Entity
 */
class Calendar implements TrackCreationInterface, TrackUpdateInterface
{
    use RemoteCalendarTrait;

    use TrackCreationTrait;

    use TrackUpdateTrait;

    public const STATUS_CANCELED = 'canceled';

    public const STATUS_MOVED = 'moved';

    public const STATUS_VALID = 'valid';

    /**
     * a list of invite which have been added during this session.
     *
     * @var array|Invite[]
     */
    public array $newInvites = [];

    /**
     * a list of invite which have been removed during this session.
     *
     * @var array|Invite[]
     */
    public array $oldInvites = [];

    public ?CalendarRange $previousCalendarRange = null;

    public ?User $previousMainUser = null;

    /**
     * @ORM\ManyToOne(targetEntity="Chill\PersonBundle\Entity\AccompanyingPeriod")
     * @Serializer\Groups({"read"})
     */
    private AccompanyingPeriod $accompanyingPeriod;

    /**
     * @ORM\ManyToOne(targetEntity="Chill\ActivityBundle\Entity\Activity")
     */
    private ?Activity $activity = null;

    /**
     * @ORM\OneToOne(targetEntity="CalendarRange", inversedBy="calendar")
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private ?CalendarRange $calendarRange = null;

    /**
     * @ORM\ManyToOne(targetEntity="CancelReason")
     */
    private ?CancelReason $cancelReason = null;

    /**
     * @ORM\Embedded(class=CommentEmbeddable::class, columnPrefix="comment_")
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private CommentEmbeddable $comment;

    /**
     * @ORM\Column(type="datetime_immutable", nullable=false)
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private ?DateTimeImmutable $endDate = null;

    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private ?int $id = null;

    /**
     * @ORM\OneToMany(
     *     targetEntity=Invite::class,
     *     mappedBy="calendar",
     *     orphanRemoval=true,
     *     cascade={"persist", "remove", "merge", "detach"}
     * )
     * @ORM\JoinTable(name="chill_calendar.calendar_to_invites")
     * @Serializer\Groups({"read"})
     */
    private Collection $invites;

    /**
     * @ORM\ManyToOne(targetEntity="Chill\MainBundle\Entity\Location")
     * @Serializer\Groups({"read"})
     */
    private ?Location $location = null;

    /**
     * @ORM\ManyToOne(targetEntity="Chill\MainBundle\Entity\User")
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private ?User $mainUser = null;

    /**
     * @ORM\ManyToMany(
     *     targetEntity="Chill\PersonBundle\Entity\Person",
     * cascade={"persist", "remove", "merge", "detach"})
     * @ORM\JoinTable(name="chill_calendar.calendar_to_persons")
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private Collection $persons;

    /**
     * @ORM\Embedded(class=PrivateCommentEmbeddable::class, columnPrefix="privateComment_")
     * @Serializer\Groups({"calendar:read"})
     */
    private PrivateCommentEmbeddable $privateComment;

    /**
     * @ORM\ManyToMany(
     *     targetEntity="Chill\ThirdPartyBundle\Entity\ThirdParty",
     * cascade={"persist", "remove", "merge", "detach"})
     * @ORM\JoinTable(name="chill_calendar.calendar_to_thirdparties")
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private Collection $professionals;

    /**
     * @ORM\Column(type="boolean", nullable=true)
     */
    private ?bool $sendSMS;

    /**
     * @ORM\Column(type="datetime_immutable", nullable=false)
     * @Serializer\Groups({"calendar:read", "read"})
     */
    private ?DateTimeImmutable $startDate = null;

    /**
     * @ORM\Column(type="string", length=255, nullable=false, options={"default": "valid"})
     */
    private string $status = self::STATUS_VALID;

    public function __construct()
    {
        $this->comment = new CommentEmbeddable();
        $this->privateComment = new PrivateCommentEmbeddable();
        $this->persons = new ArrayCollection();
        $this->professionals = new ArrayCollection();
        $this->invites = new ArrayCollection();
    }

    /**
     * @internal Use {@link (Calendar::addUser)} instead
     */
    public function addInvite(Invite $invite): self
    {
        if ($invite->getCalendar() instanceof Calendar && $invite->getCalendar() !== $this) {
            throw new LogicException('Not allowed to move an invitation to another Calendar');
        }

        $this->invites[] = $invite;
        $this->newInvites[] = $invite;

        $invite->setCalendar($this);

        return $this;
    }

    public function addPerson(Person $person): self
    {
        $this->persons[] = $person;

        return $this;
    }

    public function addProfessional(ThirdParty $professional): self
    {
        $this->professionals[] = $professional;

        return $this;
    }

    public function addUser(User $user): self
    {
        if (!$this->getUsers()->contains($user) && $this->getMainUser() !== $user) {
            $this->addInvite((new Invite())->setUser($user));
        }

        return $this;
    }

    public function getAccompanyingPeriod(): ?AccompanyingPeriod
    {
        return $this->accompanyingPeriod;
    }

    public function getActivity(): ?Activity
    {
        return $this->activity;
    }

    public function getCalendarRange(): ?CalendarRange
    {
        return $this->calendarRange;
    }

    public function getCancelReason(): ?CancelReason
    {
        return $this->cancelReason;
    }

    public function getComment(): CommentEmbeddable
    {
        return $this->comment;
    }

    public function getDuration(): ?DateInterval
    {
        if ($this->getStartDate() === null || $this->getEndDate() === null) {
            return null;
        }

        return $this->getStartDate()->diff($this->getEndDate());
    }

    public function getEndDate(): ?DateTimeImmutable
    {
        return $this->endDate;
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getInviteForUser(User $user): ?Invite
    {
        $criteria = Criteria::create();
        $criteria->where(Criteria::expr()->eq('user', $user));

        $matchings = $this->invites
            ->matching($criteria);

        if (1 === $matchings->count()) {
            return $matchings->first();
        }

        return null;
    }

    /**
     * @return Collection|Invite[]
     */
    public function getInvites(): Collection
    {
        return $this->invites;
    }

    public function getLocation(): ?Location
    {
        return $this->location;
    }

    public function getMainUser(): ?User
    {
        return $this->mainUser;
    }

    /**
     * @return Collection|Person[]
     */
    public function getPersons(): Collection
    {
        return $this->persons;
    }

    public function getPersonsAssociated(): array
    {
        if (null !== $this->accompanyingPeriod) {
            $personsAssociated = [];

            foreach ($this->accompanyingPeriod->getParticipations() as $participation) {
                if ($this->persons->contains($participation->getPerson())) {
                    $personsAssociated[] = $participation->getPerson();
                }
            }

            return $personsAssociated;
        }

        return [];
    }

    public function getPersonsNotAssociated(): array
    {
        if (null !== $this->accompanyingPeriod) {
            $personsNotAssociated = [];

            foreach ($this->persons as $person) {
                if (!in_array($person, $this->getPersonsAssociated(), true)) {
                    $personsNotAssociated[] = $person;
                }
            }

            return $personsNotAssociated;
        }

        return [];
    }

    public function getPrivateComment(): PrivateCommentEmbeddable
    {
        return $this->privateComment;
    }

    /**
     * @return Collection|ThirdParty[]
     */
    public function getProfessionals(): Collection
    {
        return $this->professionals;
    }

    public function getSendSMS(): ?bool
    {
        return $this->sendSMS;
    }

    public function getStartDate(): ?DateTimeImmutable
    {
        return $this->startDate;
    }

    public function getStatus(): ?string
    {
        return $this->status;
    }

    public function getThirdParties(): Collection
    {
        return $this->getProfessionals();
    }

    /**
     * @return Collection|User[]
     * @Serializer\Groups({"calendar:read", "read"})
     */
    public function getUsers(): Collection
    {
        return $this->getInvites()->map(static function (Invite $i) { return $i->getUser(); });
    }

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

    /**
     * return true if the user is invited.
     */
    public function isInvited(User $user): bool
    {
        if ($this->getMainUser() === $user) {
            return false;
        }

        return $this->getUsers()->contains($user);
    }

    public static function loadValidatorMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('startDate', new NotBlank());
        $metadata->addPropertyConstraint('startDate', new Range([
            'min' => '2 years ago',
            'max' => '+ 2 years',
        ]));
        $metadata->addPropertyConstraint('endDate', new NotBlank());
        $metadata->addPropertyConstraint('endDate', new Range([
            'min' => '2 years ago',
            'max' => '+ 2 years',
        ]));
    }

    /**
     * @internal Use {@link (Calendar::removeUser)} instead
     */
    public function removeInvite(Invite $invite): self
    {
        if ($this->invites->removeElement($invite)) {
            $invite->setCalendar(null);
            $this->oldInvites[] = $invite;
        }

        return $this;
    }

    public function removePerson(Person $person): self
    {
        $this->persons->removeElement($person);

        return $this;
    }

    public function removeProfessional(ThirdParty $professional): self
    {
        $this->professionals->removeElement($professional);

        return $this;
    }

    public function removeUser(User $user): self
    {
        if (!$this->getUsers()->contains($user)) {
            return $this;
        }

        $invite = $this->invites
            ->filter(static function (Invite $invite) use ($user) { return $invite->getUser() === $user; })
            ->first();
        $this->removeInvite($invite);

        return $this;
    }

    public function setAccompanyingPeriod(?AccompanyingPeriod $accompanyingPeriod): self
    {
        $this->accompanyingPeriod = $accompanyingPeriod;

        return $this;
    }

    public function setActivity(?Activity $activity): self
    {
        $this->activity = $activity;

        return $this;
    }

    public function setCalendarRange(?CalendarRange $calendarRange): self
    {
        if ($this->calendarRange !== $calendarRange) {
            $this->previousCalendarRange = $this->calendarRange;

            if (null !== $this->previousCalendarRange) {
                $this->previousCalendarRange->setCalendar(null);
            }
        }

        $this->calendarRange = $calendarRange;

        if ($this->calendarRange instanceof CalendarRange) {
            $this->calendarRange->setCalendar($this);
        }

        return $this;
    }

    public function setCancelReason(?CancelReason $cancelReason): self
    {
        $this->cancelReason = $cancelReason;

        return $this;
    }

    public function setComment(CommentEmbeddable $comment): self
    {
        $this->comment = $comment;

        return $this;
    }

    public function setEndDate(DateTimeImmutable $endDate): self
    {
        $this->endDate = $endDate;

        return $this;
    }

    public function setLocation(?Location $location): Calendar
    {
        $this->location = $location;

        return $this;
    }

    public function setMainUser(?User $mainUser): self
    {
        if ($this->mainUser !== $mainUser) {
            $this->previousMainUser = $this->mainUser;
        }

        $this->mainUser = $mainUser;
        $this->removeUser($mainUser);

        return $this;
    }

    public function setPrivateComment(PrivateCommentEmbeddable $privateComment): self
    {
        $this->privateComment = $privateComment;

        return $this;
    }

    public function setSendSMS(?bool $sendSMS): self
    {
        $this->sendSMS = $sendSMS;

        return $this;
    }

    public function setStartDate(DateTimeImmutable $startDate): self
    {
        $this->startDate = $startDate;

        return $this;
    }

    public function setStatus(string $status): self
    {
        $this->status = $status;

        return $this;
    }
}