<?php

namespace App\Entity;

use App\Repository\FieldOfStudyRepository;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

#[ORM\Table(name: 'field_of_study')]
#[ORM\Entity(repositoryClass: FieldOfStudyRepository::class)]
class FieldOfStudy
{
    #[ORM\Column]
    #[ORM\Id]
    #[ORM\GeneratedValue]
    private ?int $id = null;

    /**
     * @var string
     */
    #[ORM\Column(name: 'short_name', type: 'string', length: 255, unique: true)]
    private $shortName;

    /**
     * @var string
     */
    #[ORM\Column(name: 'name', type: 'string', length: 255, unique: true)]
    private $name;

    #[ORM\JoinColumn(name: 'field_of_study_group_id', referencedColumnName: 'id', nullable: false)]
    #[ORM\ManyToOne(targetEntity: FieldOfStudyGroup::class, inversedBy: 'fieldOfStudies')]
    private ?FieldOfStudyGroup $fieldOfStudyGroup;

    #[ORM\OneToMany(mappedBy: 'fieldOfStudy', targetEntity: StudiesProgram::class)]
    private Collection $studiesPrograms;

    /**
     * @var Collection<int, Lecturer>
     */
    #[ORM\OneToMany(mappedBy: 'fieldOfStudy', targetEntity: Lecturer::class)]
    private Collection $lecturers;

    public function __construct()
    {
        $this->studiesPrograms = new ArrayCollection();
        $this->lecturers = new ArrayCollection();
    }

    public function __toString()
    {
        return $this->name;
    }

    /**
     * @return Collection<int, StudiesProgram>
     */
    public function getStudiesPrograms(): Collection
    {
        return $this->studiesPrograms;
    }

    public function setStudiesPrograms($studiesPrograms)
    {
        $this->studiesPrograms = $studiesPrograms;
        return $this;
    }

    public function getFieldOfStudyGroup(): ?FieldOfStudyGroup
    {
        return $this->fieldOfStudyGroup;
    }

    public function setFieldOfStudyGroup(?FieldOfStudyGroup $fieldOfStudyGroup): static
    {
        $this->fieldOfStudyGroup = $fieldOfStudyGroup;

        return $this;
    }

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

    public function setName(string $name): static
    {
        $this->name = $name;

        return $this;
    }

    public function getName(): ?string
    {
        return $this->name;
    }

    public function getShortName(): ?string
    {
        return $this->shortName;
    }

    public function setShortName(string $shortName): static
    {
        $this->shortName = $shortName;

        return $this;
    }

    public function addStudiesProgram(StudiesProgram $studiesProgram): static
    {
        if (!$this->studiesPrograms->contains($studiesProgram)) {
            $this->studiesPrograms->add($studiesProgram);
            $studiesProgram->setFieldOfStudy($this);
        }

        return $this;
    }

    public function removeStudiesProgram(StudiesProgram $studiesProgram): static
    {
        if ($this->studiesPrograms->removeElement($studiesProgram)) {
            // set the owning side to null (unless already changed)
            if ($studiesProgram->getFieldOfStudy() === $this) {
                $studiesProgram->setFieldOfStudy(null);
            }
        }

        return $this;
    }

    public function getDisplayName(): string
    {
        return sprintf('%s (%s)', $this->name, $this->getFieldOfStudyGroup()->getName()); // e.g., "Mathematics (MATH)"
    }

    /**
     * @return Collection<int, Lecturer>
     */
    public function getLecturers(): Collection
    {
        return $this->lecturers;
    }

    public function addLecturer(Lecturer $lecturer): static
    {
        if (!$this->lecturers->contains($lecturer)) {
            $this->lecturers->add($lecturer);
            $lecturer->setFieldOfStudy($this);
        }

        return $this;
    }

    public function removeLecturer(Lecturer $lecturer): static
    {
        if ($this->lecturers->removeElement($lecturer)) {
            // set the owning side to null (unless already changed)
            if ($lecturer->getFieldOfStudy() === $this) {
                $lecturer->setFieldOfStudy(null);
            }
        }

        return $this;
    }
}