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: /mnt/lmsestudio-instance-vol002/lms_d6ed84231c36/app/Helpers/ [ drwxr-xr-x ]
name : Helpers.php
 <?php namespace EstudioLMS\Helpers;

use DateInterval;

/**
 * Class Helpers
 * @package EstudioLMS\Helpers
 */
class Helpers
{
    /**
     * @param $data
     * @return string
     */
    public static function logDataChanged($data)
    {
        $changes = [];
        $log = '';
        foreach ($data->getDirty() as $key => $value) {
            $original = $data->getOriginal($key);
            $changes[$key] = [
                'old' => $original,
                'new' => $value,
            ];
        }
        if (isset($changes)) {
            if (count($changes) > 0) {
                $log = '';
                foreach ($changes as $key => $change) {
                    $log .= $key . ' Changed from: ' . $change['old'] . ' to: ' . $change['new'] . PHP_EOL;
                }
            }
        }
        return $log;
    }

    /**
     * @param $string
     * @return mixed
     */
    public static function keepNumericOnly($string)
    {
        return preg_replace("/[^0-9,.]/", "", $string);
    }

    /**
     * @param $url
     * @return mixed
     */
    public static function videoInfo($url)
    {
        if (strpos($url, 'youtube.com')) {
            $url = parse_url($url);
            if (!isset($url['query'])) {
                return [];
            }
            parse_str($url['query'], $output);
            $videoId = $output['v'];
            return self::youtubeVideoInfo($videoId);
        } elseif (strpos($url, 'youtu.be')) {
            $videoId = explode('youtu.be/', $url);
            $videoId = $videoId[1];
            return self::youtubeVideoInfo($videoId);
        } elseif (strpos($url, 'vimeo.com')) {
            $videoId = explode('vimeo.com/', $url);
            $videoId = $videoId[1];
            return self::vimeoVideoInfo($videoId);
        } else {
            return [];
        }
    }

    private static function youtubeVideoInfo($videoId)
    {
        try {
            $api_key = 'AIzaSyDSg74gqy2oAvM3HNEogHlJFGcmqWbXGA4';
            $vinfo['video_type'] = 'youtube';
            $vinfo['video_id'] = $videoId;

            $xml = file_get_contents(
                "https://www.googleapis.com/youtube/v3/videos?part=contentDetails&id=$videoId&key=$api_key"
            );

            $result = json_decode($xml, true);

            if (empty($result['items'][0]['contentDetails'])) {
                return null;
            }

            $vinfo = $result['items'][0]['contentDetails'];

            $interval = new DateInterval($vinfo['duration']);
            $vinfo['duration'] = $interval->h * 3600 + $interval->i * 60 + $interval->s;

            $thumbnail_base = 'https://i.ytimg.com/vi/';

            $vinfo['thumbnail']['default'] = $thumbnail_base . $videoId . '/default.jpg';
            $vinfo['thumbnail']['mqDefault'] = $thumbnail_base . $videoId . '/mqdefault.jpg';
            $vinfo['thumbnail']['hqDefault'] = $thumbnail_base . $videoId . '/hqdefault.jpg';

            $vinfo['thumbnail']['sdDefault'] = $thumbnail_base . $videoId . '/sddefault.jpg';
            $vinfo['thumbnail']['maxresDefault'] = $thumbnail_base . $videoId . '/maxresdefault.jpg';
        } catch (\Exception $e) {
            $vinfo = [];
        }
        return $vinfo;
    }

    private static function vimeoVideoInfo($videoId)
    {
        $vinfo = [];
        try {
            $xml = @file_get_contents("http://vimeo.com/api/oembed.json?url=https://vimeo.com/$videoId");
            $xml = json_decode($xml, true);

            $vinfo['video_type'] = $xml['provider_name'];
            $vinfo['video_id'] = $xml['video_id'];
            $vinfo['title'] = $xml['title'];
            $vinfo['url'] = isset($xml['uri']) ? $xml['uri'] : '';
            $vinfo['author_name'] = isset($xml['author_name']) ? $xml['author_name'] : '';
            $vinfo['author_url'] = isset($xml['author_url']) ? $xml['author_url'] : '';
            $vinfo['duration'] = $xml['duration'];
        } catch (\Exception $e) {
            $vinfo = [];
        }
        return $vinfo;
    }

    public static function formatValue($value)
    {
        $value = floor($value * 100) / 100;
        return number_format($value, 2, ",", ".");
    }

    public static function obfuscateEmail($email)
    {
        $em = explode("@", $email);
        $name = implode(array_slice($em, 0, count($em) - 1), '@');
        $len = floor(strlen($name) / 2);

        return substr($name, 0, $len) . str_repeat('*', $len) . "@" . end($em);
    }

    public static function randomPassword($length)
    {
        $chars = "@#_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        return substr(str_shuffle($chars), 0, $length);
    }

    public static function UFlist()
    {
        $ufArr = [
            'AC' => 'AC',
            'AL' => 'AL',
            'AM' => 'AM',
            'AP' => 'AP',
            'BA' => 'BA',
            'CE' => 'CE',
            'DF' => 'DF',
            'ES' => 'ES',
            'GO' => 'GO',
            'MA' => 'MA',
            'MG' => 'MG',
            'MS' => 'MS',
            'MT' => 'MT',
            'PA' => 'PA',
            'PB' => 'PB',
            'PE' => 'PE',
            'PI' => 'PI',
            'PR' => 'PR',
            'RJ' => 'RJ',
            'RN' => 'RN',
            'RO' => 'RO',
            'RR' => 'RR',
            'RS' => 'RS',
            'SC' => 'SC',
            'SE' => 'SE',
            'SP' => 'SP',
            'TO' => 'TO'
        ];

        return $ufArr;
    }

    public static function convertToHoursMins($time, $format = '%02d:%02d')
    {
        if ($time < 1) {
            return;
        }
        $hours = floor($time / 60);
        $minutes = ($time % 60);
        return sprintf($format, $hours, $minutes);
    }

    public static function userTypes($withSuper = false)
    {
        if ($withSuper) {
            $userTypes = [
                1 => 'admin',
                2 => 'professor',
                3 => 'aluno',
                5 => 'Super Admin'
            ];
        } else {
            $userTypes = [
                1 => 'admin',
                2 => 'professor',
                3 => 'aluno',
                5 => 'Super Admin'
            ];
        }
        return $userTypes;
    }

    public static function newGuid()
    {
        $s = strtoupper(md5(uniqid(rand(), true)));
        $guidText =
            substr($s, 0, 8) . '-' .
            substr($s, 8, 4) . '-' .
            substr($s, 12, 4) . '-' .
            substr($s, 16, 4) . '-' .
            substr($s, 20);
        return $guidText;
    }

    public static function uniqueFileName($prepend = '')
    {
        if (empty($prepend)) {
            return uniqid();
        }
        return uniqid($prepend);
    }


    public static function getLocalVideoDuration($videoFile)
    {
        $file = $videoFile;
        $result = shell_exec('ffmpeg -i ' . escapeshellcmd($file) . ' 2>&1');
        preg_match('/(?<=Duration: )(\d{2}:\d{2}:\d{2})\.\d{2}/', $result, $match);

        $time = $match[0];
        if (count($match) > 1) {
            $time = $match[1];
        }

        $parsed = date_parse($time);
        $seconds = $parsed['hour'] * 3600 + $parsed['minute'] * 60 + $parsed['second'];
        return $seconds;
    }

    public static function findLongestStringFromArray($array = [])
    {
        if (!empty($array)) {
            $lengths = array_map('strlen', $array);
            $maxLength = max($lengths);
            $key = array_search($maxLength, $lengths);
            return ['length' => $maxLength, 'key' => $key, 'string' => $array[$key]];
        }
    }
}