<?php

declare(strict_types=1);

namespace Benzine\ORM\Abstracts;

abstract class AbstractCollection
{
    protected array $contained = [];

    public function __toArray(): array
    {
        return $this->contained;
    }

    public function first()
    {
        return reset($this->contained);
    }

    public function getIterator()
    {
        return new \ArrayIterator($this->contained);
    }

    public function offsetExists($offset): bool
    {
        return isset($this->contained[$offset]);
    }

    public function offsetUnset($offset): void
    {
        $this->unset($this->contained[$offset]);
    }

    public function serialize(): string
    {
        return serialize($this->contained);
    }

    public function unserialize($data): void
    {
        $this->contained = unserialize($data);
    }

    public function count(): int
    {
        return count($this->contained);
    }

    public function call($functionName)
    {
        $return = [];
        foreach ($this->contained as $index => $contained) {
            $return[$index] = $contained->{$functionName}();
        }

        return $return;
    }
}