<?php

use Fleshgrinder\Validator\URL as URLValidator;

use App\Exceptions\APIException;

// ...

    private function validate_url($url_from_request) {
        if (is_null($url_from_request)) {
            throw new APIException('URL is empty');
        }

        $url = \filter_url($url_from_request);
        if(empty($url)) {
            throw new APIException('After sanitization URL is empty');
        }
        if (\mb_strlen($url) > 2049) {
            throw new APIException('URL Too Long');
        }

        if (!filter_var($url, FILTER_VALIDATE_URL)) {
            throw new APIException('URL is invalid (check #1)');
        }

        try {
            $url_validation = new URLValidator($url);
        } catch (\Exception $e) {
            $message = $e->getMessage();
            $message = str_replace('[' . $url . '] ', '', $message);
            throw new APIException($message . ' (check #2)');
        }

        $url_lower = \mb_strtolower($url);
        $url_lower = str_replace('www.', '', $url_lower);

        foreach($this->settings['blocked_domains'] as $domain) {
            $domain = '://' . $domain . '/';
            if (\mb_strpos($url_lower, $domain) !== false) {
                throw new APIException('This domain blocked');
            }
        }

        foreach ($this->settings['blocked_pieces'] as $piece) {
            if (\mb_strpos($url_lower, $piece) !== false) {
                throw new APIException('This URL is blocked');
            }
        }

        return $url;
    }