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<?php

namespace Give\Framework\FieldsAPI\Concerns;

use Give\Framework\FieldsAPI\Contracts\Collection;
use Give\Framework\FieldsAPI\Contracts\Node;
use Give\Framework\FieldsAPI\Field;

trait HasNodes
{

    /** @var Node[] */
    protected $nodes = [];

    /**
     * {@inheritdoc}
     */
    public function getNodeIndexByName($name)
    {
        foreach ($this->nodes as $index => $node) {
            if ($node->getName() === $name) {
                return $index;
            }
        }

        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function getNodeByName($name)
    {
        foreach ($this->nodes as $node) {
            if ($node->getName() === $name) {
                return $node;
            }
            if ($node instanceof Collection) {
                $nestedNode = $node->getNodeByName($name);
                if ( $nestedNode !== null ) {
                    return $nestedNode;
                }
            }
        }

        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function all()
    {
        return $this->nodes;
    }

    /**
     * {@inheritdoc}
     */
    public function getFields()
    {
        $fields = [];

        foreach ($this->nodes as $node) {
            if ($node instanceof Field) {
                $fields[] = $node;
            } elseif ($node instanceof Collection) {
                $fields = array_merge($fields, $node->getFields());
            }
        }

        return $fields;
    }

    /**
     * {@inheritdoc}
     */
    public function count()
    {
        return count($this->nodes);
    }

}