<?php

/*
 * Chill is a software for social workers
 *
 * Copyright (C) 2014-2021, Champs Libres Cooperative SCRLFS,
 * <http://www.champs-libres.coop>, <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\Entity;

use Chill\MainBundle\Entity\Scope;
use Chill\PersonBundle\Entity\AccompanyingPeriod\ClosingMotive;
use Chill\PersonBundle\Entity\AccompanyingPeriod\Comment;
use Chill\PersonBundle\Entity\AccompanyingPeriod\Origin;
use Chill\PersonBundle\Entity\AccompanyingPeriod\Resource;
use Chill\ThirdPartyBundle\Entity\ThirdParty;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Context\ExecutionContextInterface;
use Chill\MainBundle\Entity\User;

/**
 * AccompanyingPeriod Class
 *
 * @ORM\Entity(repositoryClass="Chill\PersonBundle\Repository\AccompanyingPeriodRepository")
 * @ORM\Table(name="chill_person_accompanying_period")
 */
class AccompanyingPeriod
{
    /**
     * Mark an accompanying period as "occasional"
     * 
     * used in INTENSITY
     */
    public const INTENSITY_OCCASIONAL = 'occasional';
    
    /**
     * Mark an accompanying period as "regular"
     * 
     * used in INTENSITY
     */
    public const INTENSITY_REGULAR = 'regular';
    
    public const INTENSITIES = [self::INTENSITY_OCCASIONAL, self::INTENSITY_REGULAR];
    
    /**
     * Mark an accompanying period as "draft".
     * 
     * This means that the accompanying period is not yet 
     * confirmed by the creator
     */
    public const STEP_DRAFT = 'DRAFT';
    
    /**
     * Mark an accompanying period as "confirmed".
     * 
     * This means that the accompanying period **is** 
     * confirmed by the creator
     */
    public const STEP_CONFIRMED = 'CONFIRMED';
    
    /**
     * @var integer
     *
     * @ORM\Id
     * @ORM\Column(name="id", type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var \DateTime
     *
     * @ORM\Column(type="date")
     */
    private $openingDate;

    /**
     * @var \DateTime
     *
     * @ORM\Column(type="date", nullable=true)
     */
    private $closingDate = null;

    /**
     * @var string
     *
     * @ORM\Column(type="text")
     */
    private $remark = '';
    
    /**
     * @var Collection
     *
     * @ORM\OneToMany(targetEntity="Chill\PersonBundle\Entity\AccompanyingPeriod\Comment",
     *       mappedBy="accompanyingPeriod"
     *     )
     */
    private $comments;
    
    /**
     * @var Collection
     *
     * @ORM\OneToMany(targetEntity=AccompanyingPeriodParticipation::class,
     *     mappedBy="accompanyingPeriod",
     *     cascade={"persist", "remove", "merge", "detach"})
     */
    private $participations;
    
    /**
     * @var AccompanyingPeriod\ClosingMotive
     *
     * @ORM\ManyToOne(
     *     targetEntity="Chill\PersonBundle\Entity\AccompanyingPeriod\ClosingMotive")
     * @ORM\JoinColumn(nullable=true)
     */
    private $closingMotive = null;
    
    /**
     * @ORM\ManyToOne(targetEntity=User::class)
     * @ORM\JoinColumn(nullable=true)
     */
    private $user;
    
    /**
     * @ORM\ManyToOne(targetEntity=User::class)
     * @ORM\JoinColumn(nullable=true)
     */
    private $createdBy;
    
    /**
     * @var string
     * @ORM\Column(type="string", length=32, nullable=true)
     */
    private $step = self::STEP_DRAFT;
    
    /**
     * @ORM\ManyToOne(targetEntity=Origin::class)
     * @ORM\JoinColumn(nullable=true)
     */
    private $origin;
    
    /**
     * @var string
     * @ORM\Column(type="string", nullable=true)
     */
    private $intensity;

    /**
     * @var Collection
     * @ORM\ManyToMany(
     *     targetEntity=Scope::class,
     *     cascade={}
     *     )
     * @ORM\JoinTable(
     *     name="accompanying_periods_scopes",
     *     joinColumns={@ORM\JoinColumn(name="accompanying_period_id", referencedColumnName="id")},
     *     inverseJoinColumns={@ORM\JoinColumn(name="scope_id", referencedColumnName="id")}
     * )
     */
    private $scopes;

    /**
     * @ORM\ManyToOne(targetEntity=Person::class)
     * @ORM\JoinColumn(nullable=true)
     */
    private $requestorPerson;

    /**
     * @ORM\ManyToOne(targetEntity=ThirdParty::class)
     * @ORM\JoinColumn(nullable=true)
     */
    private $requestorThirdParty;

    /**
     * @var bool
     * @ORM\Column(type="boolean")
     */
    private $requestorAnonymous = false;

    /**
     * @var bool
     * @ORM\Column(type="boolean")
     */
    private $emergency = false;

    /**
     * @var bool
     * @ORM\Column(type="boolean")
     */
    private $confidential = false;

    /**
     * @var Collection
     *
     * @ORM\OneToMany(
     *     targetEntity="Chill\PersonBundle\Entity\AccompanyingPeriod\Resource",
     *     mappedBy="accompanyingPeriod"
     * )
     */
    private $resources;
    
    /**
     * AccompanyingPeriod constructor.
     *
     * @param \DateTime $dateOpening
     * @uses AccompanyingPeriod::setClosingDate()
     */
    public function __construct(\DateTime $dateOpening) {
        $this->setOpeningDate($dateOpening);
        $this->participations = new ArrayCollection();
        $this->scopes = new ArrayCollection();
    }

    /**
     * Get id
     *
     * @return integer
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set openingDate
     *
     * @param \DateTime $dateOpening
     * @return AccompanyingPeriod
     */
    public function setOpeningDate($openingDate)
    {
        $this->openingDate = $openingDate;
    
        return $this;
    }

    /**
     * Get openingDate
     *
     * @return \DateTime
     */
    public function getOpeningDate()
    {
        return $this->openingDate;
    }

    /**
     * Set closingDate
     *
     * For closing a Person file, you should use Person::setClosed instead.
     *
     * @param \DateTime $dateClosing
     * @return AccompanyingPeriod
     *
     */
    public function setClosingDate($closingDate)
    {
        $this->closingDate = $closingDate;
    
        return $this;
    }

    /**
     * Get closingDate
     *
     * @return \DateTime
     */
    public function getClosingDate(): ?\DateTime
    {
        return $this->closingDate;
    }
    
    /**
     * @return boolean
     */
    public function isOpen(): bool
    {
        if ($this->getOpeningDate() > new \DateTimeImmutable('now')) {
            return false;
        }

        if ($this->getClosingDate() === null) {
            return true;
        }
        
        return false;
    }
    
    public function setRemark(string $remark): self
    {
        if ($remark === null) {
            $remark = '';
        }
        
        $this->remark = $remark;
    
        return $this;
    }
    
    public function getRemark(): string
    {
        return $this->remark;
    }
    
    public function getComments(): Collection
    {
        return $this->comments;
    }
    
    public function addComment(Comment $comment): self
    {
        $this->comments[] = $comment;
        
        return $this;
    }
    
    public function removeComment(Comment $comment): void
    {
        $this->comments->removeElement($comment);
    }
    
    /**
     * Get Participations Collection
     */
    public function getParticipations(): Collection
    {
        return $this->participations;
    }
    
    /**
     * This private function scan Participations Collection,
     * searching for a given Person
     */
    private function participationsContainsPerson(Person $person): ?AccompanyingPeriodParticipation
    {
        foreach ($this->participations as $participation) {
            /** @var AccompanyingPeriodParticipation $participation */
            if ($person === $participation->getPerson()) {
                return $participation;
        }}

        return null;
    }
    
    /**
     * This public function is the same but return only true or false
     */
    public function containsPerson(Person $person): bool
    {
        return ($this->participationsContainsPerson($person) === null) ? false : true;
    }
    
    /**
     * Add Person
     */
    public function addPerson(Person $person = null): self
    {
        $participation = new AccompanyingPeriodParticipation($this, $person);
        $this->participations[] = $participation;
    
        return $this;
    }
    
    /**
     * Remove Person
     */
    public function removePerson(Person $person): void
    {
        $participation = $this->participationsContainsPerson($person);
        
        if (! null === $participation) {
            $participation->setEndDate(new \DateTimeImmutable('now'));
            $this->participations->removeElement($participation);
        }
    }
    
    
    public function getClosingMotive(): ?ClosingMotive
    {
        return $this->closingMotive;
    }
    
    public function setClosingMotive(ClosingMotive $closingMotive = null): self
    {
        $this->closingMotive = $closingMotive;
        
        return $this;
    }
    
    /**
     * If the period can be reopened.
     *
     * This function test if the period is closed and if the period is the last
     * for the given person
     */
    public function canBeReOpened(Person $person): bool
    {
        if ($this->isOpen() === true) {
            return false;
        }
        
        $participation = $this->participationsContainsPerson($person);
        if (!null === $participation)
        {
            $person = $participation->getPerson();
            $periods = $person->getAccompanyingPeriodsOrdered();
            return end($periods) === $this;
        }
        
        return false;
    }
    
    /**
     */
    public function reOpen(): void
    {
        $this->setClosingDate(null);
        $this->setClosingMotive(null);
    }

    /**
     * Validation function
     */
    public function isDateConsistent(ExecutionContextInterface $context)
    {
        if ($this->isOpen()) {
            return;
        }
        
        if (! $this->isClosingAfterOpening()) {
            $context->buildViolation('The date of closing is before the date of opening')
                ->atPath('dateClosing')
                ->addViolation();
        }
    }
    
    /**
     * Returns true if the closing date is after the opening date.
     *
     * @return boolean
     */
    public function isClosingAfterOpening(): bool
    {
        if (null === $this->getClosingDate()) {
            return false;
        }
        $diff = $this->getOpeningDate()->diff($this->getClosingDate());

        if ($diff->invert === 0) {
            return true;
        }
        return false;
    }
    
    function getUser(): ?User
    {
        return $this->user;
    }
    
    function setUser(User $user): self
    {
        $this->user = $user;
        
        return $this;
    }

    public function getOrigin(): ?Origin
    {
        return $this->origin;
    }
    
    public function setOrigin(Origin $origin): self
    {
        $this->origin = $origin;
    
        return $this;
    }
    
    public function getRequestorPerson(): ?Person
    {
        return $this->requestorPerson;
    }
    
    public function setRequestorPerson(Person $requestorPerson): self
    {
        $this->requestorPerson = ($this->requestorThirdParty === null) ? $requestorPerson : null;
    
        return $this;
    }
    
    public function getRequestorThirdParty(): ?ThirdParty
    {
        return $this->requestorThirdParty;
    }
    
    public function setRequestorThirdParty(ThirdParty $requestorThirdParty): self
    {
        $this->requestorThirdParty = ($this->requestorPerson === null) ? $requestorThirdParty : null;
    
        return $this;
    }
    
    /**
     * @return Person|ThirdParty
     */
    public function getRequestor()
    {
        return $this->requestorPerson ?? $this->requestorThirdParty;
    }
    
    public function isRequestorAnonymous(): bool
    {
        return $this->requestorAnonymous;
    }
    
    public function setRequestorAnonymous(bool $requestorAnonymous): self
    {
        $this->requestorAnonymous = $requestorAnonymous;
        
        return $this;
    }
    
    public function isEmergency(): bool
    {
        return $this->emergency;
    }
    
    public function setEmergency(bool $emergency): self
    {
        $this->emergency = $emergency;
        
        return $this;
    }
    
    public function isConfidential(): bool
    {
        return $this->confidential;
    }
    
    public function setConfidential(bool $confidential): self
    {
        $this->confidential = $confidential;
        
        return $this;
    }
    
    public function getCreatedBy(): ?User
    {
        return $this->createdBy;
    }
    
    public function setCreatedBy(User $createdBy): self
    {
        $this->createdBy = $createdBy;

        return $this;
    }

    public function getStep(): ?string
    {
        return $this->step;
    }
    
    public function setStep(string $step): self
    {
        $this->step = $step;
    
        return $this;
    }

    public function getIntensity(): ?string
    {
        return $this->intensity;
    }
    
    public function setIntensity(string $intensity): self
    {
        $this->intensity = $intensity;
    
        return $this;
    }
    
    public function getScopes(): Collection
    {
        return $this->scopes;
    }
    
    public function addScope(Scope $scope): self
    {
        $this->scopes[] = $scope;
    
        return $this;
    }
    
    public function removeScope(Scope $scope): void
    {
        $this->scopes->removeElement($scope);
    }
    
    public function getResources(): Collection
    {
        return $this->resources;
    }
    
    public function addResource(Resource $resource): self
    {
        $this->resources[] = $resource;
        
        return $this;
    }
    
    public function removeResource(Resource $resource): void
    {
        $this->resources->removeElement($resource);
    }
}