<?php


abstract class AbstractReviewRouter extends AbstractRouter
{

	/**
	 * Builds url part.
	 *
	 * @return boolean Return true to continue to next router; return false not to rewrite given prefix.
	 */
	protected function build()
	{
		static $default_per_page = array();

		$ret = '';
		$build_params = $this->extractBuildParams();

		if ( $build_params === false ) {
			return '';
		}

		list ($prefix) = explode('.', $this->buildPrefix);

		if ( !array_key_exists($prefix, $default_per_page) ) {
			/** @var ListHelper $list_helper */
			$list_helper = $this->Application->recallObject('ListHelper');

			$default_per_page[$prefix] = $list_helper->getDefaultPerPage($prefix);
		}

		if ( $build_params[$this->buildPrefix . '_id'] ) {
			return false;
		}
		else {
			if ( $build_params[$this->buildPrefix . '_Page'] == 1 ) {
				// When printing category items and we are on the 1st page -> there is no information about
				// category item prefix and $params['pass_category'] will not be added automatically.
				$this->setBuildParam('pass_category', true);
			}
			elseif ( $build_params[$this->buildPrefix . '_Page'] > 1 ) {
				$this->setBuildParam('page', $build_params[$this->buildPrefix . '_Page']);
			}

			$per_page = $build_params[$this->buildPrefix . '_PerPage'];

			if ( $per_page && ($per_page != $default_per_page[$this->buildPrefix]) ) {
				$this->setBuildParam('per_page', $build_params[$this->buildPrefix . '_PerPage']);
			}
		}

		return mb_strtolower(rtrim($ret, '/'));
	}

	/**
	 * Parses url part.
	 *
	 * @param array $url_parts Url parts to parse.
	 * @param array $params    Parameters, that are used for url building or created during url parsing.
	 *
	 * @return boolean Return true to continue to next router; return false to stop processing at this router.
	 */
	public function parse(array &$url_parts, array &$params)
	{
		// Don't parse anything.
		return true;
	}

}