<?php

declare(strict_types=1);

namespace App\Entity\Groups;

use App\Entity\TimestampableEntityInterface;
use App\Entity\TimestampableParentAwareInterface;
use App\Enum\Groups\AccommodationBookingPeriodPosition;
use Doctrine\DBAL\Types\Types;
use Doctrine\ORM\Mapping as ORM;

/**
 * A stretch of nights split off the start or the end of a stay, such as the day an advance team
 * arrives before the group. It carries no pax, board or services of its own and is never priced
 * from the catalog: the office quotes it as free-form lines, which are added to the booking's
 * total and fall under its fixed total discount. The booking's own parameters price only what
 * remains between the leading and the trailing periods.
 */
#[ORM\Entity]
class AccommodationBookingPeriod implements TimestampableParentAwareInterface
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    private ?int $id = null;

    #[ORM\ManyToOne(inversedBy: 'periods')]
    #[ORM\JoinColumn(nullable: false, onDelete: 'CASCADE')]
    private ?AccommodationBooking $booking = null;

    #[ORM\Column(length: 10, enumType: AccommodationBookingPeriodPosition::class)]
    private AccommodationBookingPeriodPosition $position;

    #[ORM\Column(type: Types::DATE_IMMUTABLE)]
    private \DateTimeImmutable $dateFrom;

    // Exclusive, like the booking's: the departure day, not the last night.
    #[ORM\Column(type: Types::DATE_IMMUTABLE)]
    private \DateTimeImmutable $dateTo;

    /** What the price breakdown calls the period, e.g. "Vorausteam"; without one it shows the dates alone. */
    #[ORM\Column(length: 255, nullable: true)]
    private ?string $label = null;

    /**
     * Amounts in minor units of the booking's pricing currency; a line has no currency of its own.
     *
     * The column is not called `lines`: that is a reserved word in MariaDB, and the ORM does
     * not quote column names in the statements it writes.
     *
     * @var list<array{label: string, amount: int}>
     */
    #[ORM\Column(name: 'price_lines', type: Types::JSON)]
    private array $lines = [];

    public function __construct(AccommodationBookingPeriodPosition $position, \DateTimeImmutable $dateFrom, \DateTimeImmutable $dateTo)
    {
        $this->position = $position;
        $this->dateFrom = $dateFrom;
        $this->dateTo = $dateTo;
    }

    public function __clone()
    {
        $this->id = null;
        $this->booking = null;
    }

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

    public function getBooking(): ?AccommodationBooking
    {
        return $this->booking;
    }

    public function setBooking(?AccommodationBooking $booking): self
    {
        $this->booking = $booking;

        return $this;
    }

    public function getTimestampableParent(): ?TimestampableEntityInterface
    {
        return $this->booking;
    }

    public function getPosition(): AccommodationBookingPeriodPosition
    {
        return $this->position;
    }

    public function isLeading(): bool
    {
        return AccommodationBookingPeriodPosition::Leading === $this->position;
    }

    public function getDateFrom(): \DateTimeImmutable
    {
        return $this->dateFrom;
    }

    public function getDateTo(): \DateTimeImmutable
    {
        return $this->dateTo;
    }

    public function setDates(\DateTimeImmutable $dateFrom, \DateTimeImmutable $dateTo): self
    {
        $this->dateFrom = $dateFrom;
        $this->dateTo = $dateTo;

        return $this;
    }

    public function getLabel(): ?string
    {
        return $this->label;
    }

    public function setLabel(?string $label): self
    {
        $this->label = $label;

        return $this;
    }

    public function getNights(): int
    {
        return $this->dateFrom < $this->dateTo ? $this->dateFrom->diff($this->dateTo)->days : 0;
    }

    /** @return list<array{label: string, amount: int}> */
    public function getLines(): array
    {
        return $this->lines;
    }

    /** @param list<array{label: string, amount: int}> $lines */
    public function setLines(array $lines): self
    {
        $this->lines = $lines;

        return $this;
    }

    public function getTotal(): int
    {
        return array_sum(array_column($this->lines, 'amount'));
    }
}