<?php

namespace ActivityPhp\Type\Validator;

use ActivityPhp\Type\Core\ObjectType;
use ActivityPhp\Type\Util;
use ActivityPhp\Type\ValidatorInterface;

/**
 * \ActivityPhp\Type\Validator\IconValidator is a dedicated
 * validator for icon attribute.
 */
class IconValidator implements ValidatorInterface
{
	/**
	 * Validate icon item
	 *
	 * @param string $item
	 * @param mixed  $container An object
	 * @todo Support Image objects and Link objects
	 * @todo Implement size checks
	 */
	public function validate($item, $container): bool
	{
		Util::subclassOf($container, ObjectType::class, true);

		if (is_string($item)) {
		    return Util::validateUrl($item);
		}

		if (is_array($item)) {
		    $item = Util::arrayToType($item);
		}

		if (is_array($item)) {
		    foreach ($item as $value) {

		        if (is_array($value)) {
		            $value = Util::arrayToType($value);
		        }

		        if (is_string($value) && Util::validateUrl($value)) {
		            continue;
		        }

		        if (! $this->validateObject($value)) {
		            return false;
		        }
		    }

		    return true;
		}

		// Must be an Image or a Link
		return $this->validateObject($item);
	}


	/**
	 * Validate an object format
	 *
	 * @param object $item
	 */
	protected function validateObject($item): bool
	{
		return Util::validateLink($item)
		    || Util::isType($item, 'Image');
	}
}
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