<?php
/*
 * Copyright © 2021 ExacTI Technology Solutions. All rights reserved.
 * GPLv3 General License.
 * https://exacti.com.br
 */

 //namespace Phacil\Framework;

use Phacil\Framework\Action;
use Phacil\Framework\Controller as ControllerController;
use Phacil\Framework\Registry;
use Phacil\Framework\Config;
use Phacil\Framework\Request;

class SystemUrlSeoUrl extends ControllerController {

	/**
	 * @var string
	 */
	private $notfound = 'error/not_found';

	/**
	 * @var bool
	 */
	private $tableUrlAliasExists = false;

	/**
	 * 
	 * @var string[]
	 */
	private $regType = array(
		"%d" => '(\\d{1,})',
		"%w" => '(\\w{1,})',
		"%a" => '([[:ascii:]]{1,})',
		"%" => '(.*)');

	/**
	 * @param Registry $registry 
	 * @return void 
	 */
	public function __construct()
	{
		$this->notfound = Config::NOT_FOUND() ?: $this->notfound;
		$this->tableUrlAliasExists = Config::USE_DB_CONFIG() ? $this->db->query()->isTableExists("url_alias") : false;
	}

	/** 
	 * @return Action|void 
	 * @todo
	 */
	public function index() {
		// Add rewrite to url class
		if ($this->config->get('config_seo_url')) {
			$this->url->addRewrite($this);
		}

		$match = array();

		// Decode URL
		if (Request::GET('_route_')) {
			$parts_count = explode('/', Request::GET('_route_'));
			$parts = array(Request::GET('_route_'));

			foreach ($parts as $part) {
				if(Config::USE_DB_CONFIG()){
					if($this->tableUrlAliasExists){
						$query = $this->db->query()->select()->setTable("url_alias");
						$query->where()->eq('keyword', $part);
						$query = $query->load();
					}
				}

				if (isset($query) && $query != false && $query->getNumRows() === 1) {
					$row = $query->getRow();

					if(!empty($row->getValue('get'))) {
						$a = explode(',', $row->getValue('get'));

						foreach($a as $value) {
							$b = explode('=', $value);
							$_GET[$b[0]] = $b[1];
							Request::GET($b[0], $b[1]);
						}
					}

					Request::GET('route', $row->getValue('query'));
				} elseif (Config::ROUTES() && is_array(Config::ROUTES())) {
					$rotas = Config::ROUTES();

					if(isset($rotas[$part])){
						Request::GET('route', $rotas[$part]);
					} else {

						foreach($rotas as $key => $page) {

							if(isRegularExpression($key)) {

								$preg = preg_quote($key, "/");

								$preg = str_replace(array_keys($this->regType), array_values($this->regType), $preg);

								if((@preg_match("/". $preg . "/", $parts[0], $match))) {

									$countTree = explode("/", $match[0]);

									if(count($countTree) == count($parts_count)){

										unset($match[0]);

										$match = $this->request->clean($match);

										$pagina = $page;

										break;
									}

								}
							}
						}

						if(isset($pagina)) {
							Request::GET('route', $pagina);
						} else {
							Request::GET('route', $this->notfound);
						}
					}

				} else {
					Request::GET('route', $this->notfound);
				}
			}


			if (Request::GET('route')) {
				\Phacil\Framework\Registry::addPreferenceByRoute(\Phacil\Framework\startEngineExacTI::getRoute());
				return $this->registry->create(\Phacil\Framework\Action::class, [Request::GET('route'), $match]);
			}
		}
	}

	/**
	 * @param string $link 
	 * @return string 
	 * @todo
	 */
	public function rewrite($link) {
		if ($this->config->get('config_seo_url')) {
			$url_data = parse_url(str_replace('&amp;', '&', $link));

			$url = '';

			$data = array();

			parse_str($url_data['query'], $data);

			$joinRegex = implode("|", array_keys($this->regType));

			foreach ($data as $key => $value) {

				if (isset($data['route'])) {
					if(Config::USE_DB_CONFIG()){
						if ($this->tableUrlAliasExists) {
							$query = $this->db->query()->select()->from("url_alias");
							$query->where()->eq('query', $value)->end();
							$query = $query->load();
						}
					}
					
					if (isset($query) && $query->getNumRows() > 0) {
						$url .= '/' . $query->getRow()->getValue('keyword');
					} elseif (Config::ROUTES() && is_array(Config::ROUTES())) {
						//$arV = array_search($value, ROUTES);
						foreach(Config::ROUTES() as $query => $page) {
							if($page == $value){
								if(isRegularExpression($query)){
									unset($data['route']);
									$qnt = substr_count($query, '%');
									if(count($data) == $qnt) {
										$str = $query;

										foreach($data as $replace){
											$str = preg_replace('/('.$joinRegex.')/', $replace, $str, 1);
										}

										$url .= '/' .($str);

										$data = false;

										break;
									}
								} else {
									$url .= '/' . (array_search($value, Config::ROUTES()));
								}

							}

						}

					}
					unset($data[$key]);
				}

			}

			if ($url) {
				unset($data['route']);

				$query = '';

				if ($data) {
					foreach ($data as $key => $value) {
						$query .= '&' . $key . '=' . $value;
					}

					if ($query) {
						$query = '?' . trim($query, '&');
					}
				}

				return $url_data['scheme'] . '://' . $url_data['host'] . (isset($url_data['port']) ? ':' . $url_data['port'] : '') . str_replace('/index.php', '', $url_data['path']) . $url . $query;
			} else {
				return $link;
			}
		} else {
			return $link;
		}
	}
}

/**
 * @param string $string 
 * @return bool 
 */
function isRegularExpression($string) {
	return (strpos($string, '%') !== false);
}