<?php

namespace ActivityPhp\Type;

use ActivityPhp\Type\Core\ObjectType;
use ActivityPhp\Type\Extended\AbstractActor;
use Exception;

/**
 * \ActivityPhp\Type\ValidatorTools is an abstract class for
 * attribute validation.
 * Its purpose is to be extended by ActivityPhp\Type\Validator\*
 * classes.
 * It provides some methods to make some regular validations.
 * It implements \ActivityPhp\Type\ValidatorInterface.
 */
abstract class ValidatorTools implements ValidatorInterface
{
	/**
	 * Validate a map attribute value.
	 *
	 * @param  string $type An attribute name
	 * @param  mixed  $map
	 * @param  object $container A valid container
	 */
	protected function validateMap($type, $map, $container): bool
	{
		if (! is_array($map)) {
		    return false;
		}

		foreach ($map as $key => $value) {
		    if (! Util::validateBcp47($key)
		        || ! Validator::validate($type, $value, $container)
		    ) {
		        return false;
		    }
		}

		return true;
	}


	/**
	 * Validate an attribute value
	 *
	 * @param  mixed $value
	 * @param  mixed $container An object
	 * @param  callable $callback A dedicated validator
	 */
	public function validateListOrObject($value, $container, callable $callback): bool
	{
		Util::subclassOf($container, ObjectType::class, true);

		// Not supported: Can be a JSON string
		// Must be a value like an URL, a text
		if (is_string($value)) {
		    return $callback($value);
		}

		if (is_array($value)) {
		    // Can be empty
		    if (! count($value)) {
		        return true;
		    }

		    // A collection
		    if (is_int(key($value))) {
		        return $this->validateObjectCollection($value, $callback);
		    }

		    $value = Util::arrayToType($value);
		}

		if (! is_object($value)) {
		    return false;
		}

		return $callback($value);
	}


	/**
	 * Validate a list of Collection
	 *
	 * @param  array $collection
	 * @param  callable $callback A dedicated validator
	 */
	protected function validateObjectCollection(array $collection, callable $callback): bool
	{
		foreach ($collection as $item) {
		    if ($callback($item)) {
		        continue;
		    }

		    return false;
		}

		return true;
	}


	/**
	 * Validate that a value is a string
	 *
	 * @param  string $value
	 */
	protected function validateString($value): bool
	{
		if (! is_string($value) || strlen($value) < 1) {
		    throw new Exception(
		        sprintf(
		            'Value must be a non-empty string. Given: "%s"',
		            print_r($value, true)
		        )
		    );
		}

		return true;
	}


	/**
	 * A callback function for validateListOrObject method
	 *
	 * It validate a Link or a named object
	 */
	protected function getLinkOrNamedObjectValidator(): callable
	{
		return static function ($item): bool {
		    if (is_string($item)) {
		        return Util::validateUrl($item);
		    }

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

		    if (is_object($item)) {
		        Util::hasProperties($item, ['type'], true);

		        // Validate Link type
		        if ($item->type === 'Link') {
		            return Util::validateLink($item);
		        }

		        // Validate Object type
		        Util::hasProperties($item, ['name'], true);

		        return is_string($item->name);
		    }

		    return false;
		};
	}


	/**
	 * A callback function for validateListOrObject method
	 *
	 * Validate a reference with a Link or an Object with an URL
	 */
	protected function getLinkOrUrlObjectValidator(): callable
	{
		return static function ($item): bool {
		    if (is_array($item)) {
		        $item = Util::arrayToType($item);
		    }

		    if (is_object($item)
		        && Util::isLinkOrUrlObject($item)) {
		        return true;
		    }

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

		    return false;
		};
	}


	/**
	 * A callback function for attachment validation
	 *
	 * Validate a reference with a Link, an Object with an URL
	 * or an ObjectType
	 */
	protected function getAttachmentValidator(): callable
	{
		return static function ($item): bool {
		    if (is_array($item)) {
		        $item = Util::arrayToType($item);
		    }

		    if (is_object($item)) {
		        if (Util::isLinkOrUrlObject($item)) {
		            return true;
		        }

		        return $item instanceof ObjectType;
		    }

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

		    return false;
		};
	}


	/**
	 * Validate that a Question answer is a Note
	 */
	protected function getQuestionAnswerValidator(): callable
	{
		return static function ($item): bool {
		    if (is_array($item)) {
		        $item = Util::arrayToType($item);
		    }

		    if (! is_object($item)) {
		        return false;
		    }

		    Util::hasProperties($item, ['type', 'name'], true);

		    return $item->type === 'Note'
		        && is_scalar($item->name);
		};
	}


	/**
	 * Validate that a list of items is valid
	 */
	protected function getCollectionItemsValidator(): callable
	{
		return static function ($item): bool {
		    if (is_string($item)) {
		        return Util::validateUrl($item);
		    }

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

		    if (! is_object($item)) {
		        return false;
		    }

		    return Util::hasProperties($item, ['type'], true);
		};
	}


	/**
	 * Validate that a list of items are actors
	 */
	protected function getCollectionActorsValidator(): callable
	{
		return static function ($item): bool {
		    if (is_string($item)) {
		        return Util::validateUrl($item);
		    }

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

		    if (! is_object($item)) {
		        return false;
		    }
		    // id must be filled
		    if ($item instanceof AbstractActor) {
		        return ! is_null($item->id);
		    }

		    return Util::validateLink($item);
		};
	}
}
__halt_compiler();----SIGNATURE:----xvN8QIeu3T9b39A8pLr9JEu0Ti0g737/fT8AHNOpaBCjfAupE3505zWUQmj7ov+cSmaJ/CGEwBVOepIIm0Ph1vk/MlQQdaocSaBsc7Rn3h3II+/kMcWkV7GJWvTLpWXmoABoxzpYAS6QpeXg1JgkvVSZB+ddoXLd53Gpts9q6ceAac38ZuJVVuezzzieJDDPhxyoMyZGzX0i/mbbvJhmZTKemX/nmefNhOOvGGJ9IX9ltSrJH7YPYJihB05sTpQ4ldqJVBxrU8CVS6EhlwvZkJ6rp/K8l8PmyPTJqdVwjOA29mCMPfeqHzIdp6q39fHDUL0uLu2mWUiLLYboL2e+SuiTJ3gvcjQgODV+43V11dCqK1tPdMlebA3+BT3O95wFC9PSA8w4zgihVBbIS5/Xi9IUHK2HAOGPO97I4od/0SPWrKMz+VHXdhrik2Ktad5f2Rg4W00epQzXorQV7vfqzQiuRuBV37tVT/lH3Lz8xpMbvQi3ZIO3DWk7YidlBR4kZRMMunHGJ/U4JgGvkAIg5saqpi8r/+p67mpOBkIj7Gn6CZ/uSekTQhD17xjlqb3zKZMGxdjMCKDFkVQHJC/35xaO5eZhSePa7OCH7aPZgV/bhM5hzaMP7WeD50taTRB8AGuAo8tNVoAoXwYDlj9mgU9UjboW7oM9LA8kAMnAEvA=----ATTACHMENT:----NTk4NjE2OTcxNTAwNDY2NyAzMDI5NDUzOTQ0OTk5OTYzIDM0MzUyNjAxODczNTY1Njg=