<?php

declare(strict_types=1);

namespace GitContributionGraph\Entity;

/**
 * @implements \IteratorAggregate<int, Contribution>
 */
final class ContributionCollection implements \IteratorAggregate, \Countable
{
    /** @var array<int, Contribution> */
    private readonly array $contributions;

    public function __construct(Contribution ...$contributions)
    {
        $this->contributions = array_values($contributions);
    }

    /** @return \ArrayIterator<int, Contribution> */
    public function getIterator(): \ArrayIterator
    {
        return new \ArrayIterator($this->contributions);
    }

    /** Number of contributions held in this collection. */
    public function count(): int
    {
        return count($this->contributions);
    }
}