<?php
declare(strict_types=1);

namespace App\Entity;

use App\Enum\LabelType;
use App\Repository\BookRepository;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

#[ORM\Entity(repositoryClass: BookRepository::class)]
class Book extends AbstractBook {
	#[ORM\OneToOne(targetEntity: Borrow::class, mappedBy: 'book', cascade: ['persist', 'remove'], orphanRemoval: true)]
	private ?Borrow $borrow = null;

	/** @var Collection<int, Label> */
	#[ORM\OneToMany(targetEntity: Label::class, mappedBy: 'book', cascade: ['persist', 'remove'], fetch: 'EAGER', orphanRemoval: true)]
	#[ORM\OrderBy(['label' => 'ASC'])]
	private Collection $labels;

	/** @var Collection<int, BorrowHistory> */
	#[ORM\OneToMany(targetEntity: BorrowHistory::class, mappedBy: 'book', cascade: ['persist', 'remove'], orphanRemoval: true)]
	#[ORM\OrderBy(['at' => 'DESC'])]
	private Collection $borrowHistory;

	public function __construct() {
		$this->labels = new ArrayCollection();
		$this->borrowHistory = new ArrayCollection();
	}

	public static function fromOusted(OustedBook $ousted): self {
		$book = new self();
		$book->copyDataFrom($ousted);

		return $book;
	}

	public function getBorrow(): ?Borrow {
		return $this->borrow;
	}

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

	public function lendTo(string $who, \DateTimeImmutable $at): void {
		if ($this->isBorrowed()) {
			throw new \LogicException(\sprintf('Book %d is already borrowed.', $this->id));
		}

		$this->borrow = new Borrow($this, $who, $at);
	}

	public function giveBack(\DateTimeImmutable $at): void {
		if (!$this->borrow instanceof Borrow) {
			throw new \LogicException(\sprintf('Book %d is not borrowed.', $this->id));
		}

		$this->borrowHistory->add(new BorrowHistory($this, $this->borrow->getWho(), $this->borrow->getAt(), $at));
		$this->borrow = null;
	}

	/**
	 * @return Collection<int, Label>
	 */
	public function getLabels(): Collection {
		return $this->labels;
	}

	protected function createLabel(string $label, LabelType $type): Label {
		return new Label($this, $label, $type);
	}

	/**
	 * @return Collection<int, BorrowHistory>
	 */
	public function getBorrowHistory(): Collection {
		return $this->borrowHistory;
	}

	public function addBorrowHistory(string $who, \DateTimeImmutable $at, \DateTimeImmutable $till): void {
		$this->borrowHistory->add(new BorrowHistory($this, $who, $at, $till));
	}
}