<?php

declare(strict_types=1);

namespace Domain\Models\ValueObjects;

use Webmozart\Assert\Assert;

final readonly class DatePeriod
{
    public ?\DateTimeImmutable $start;

    public ?\DateTimeImmutable $end;

    public function __construct(
        ?\DateTimeInterface $start = null,
        ?\DateTimeInterface $end = null,
    ) {
        $this->start = $start !== null ? \DateTimeImmutable::createFromInterface($start) : null;
        $this->end   = $end   !== null ? \DateTimeImmutable::createFromInterface($end) : null;

        if ($this->start !== null && $this->end !== null) {
            Assert::true($this->start <= $this->end, 'The start date must be before or equal to the end date.');
        }
    }

    public function isActiveAt(?\DateTimeInterface $date = null): bool
    {
        $target = $date !== null ? \DateTimeImmutable::createFromInterface($date) : new \DateTimeImmutable();

        if ($this->start !== null && $target < $this->start) {
            return false;
        }

        if ($this->end !== null && $target > $this->end) {
            return false;
        }

        return true;
    }
}