<?php

namespace Podlove\Api;

use Podlove\NormalPlayTime;

class Validation
{
    public static function timestamp($param, $request, $key)
    {
        if (!isset($param)) {
            return false;
        }

        $npt = NormalPlayTime\Parser::parse($param, 'ms');
        if ($npt === false) {
            return false;
        }

        return true;
    }

    public static function url($param, $request, $key)
    {
        if (empty($param)) {
            return false;
        }

        if (preg_match('/\\b(?:(?:https?|ftp):\\/\\/|www\\.)[-a-z0-9+&@#\\/%?=~_|!:,.;]*[-a-z0-9+&@#\\/%=~_|]/i', $param)) {
            return true;
        }

        return false;
    }

    public static function maxLength255($param, $request, $key)
    {
        if (isset($param) && gettype($param) == 'string') {
            if (strlen($param) <= 255) {
                return true;
            }
        }

        return false;
    }

    public static function chapters($param, $request, $key)
    {
        if (isset($param) && is_array($param)) {
            for ($i = 0; $i < count($param); ++$i) {
                $timestamp = '';
                if (isset($param[$i]['start'])) {
                    $timestamp = $param[$i]['start'];
                    if (!Validation::timestamp($timestamp, $request, $key)) {
                        return false;
                    }
                }
                $title = '';
                if (isset($param[$i]['title'])) {
                    $title = $param[$i]['title'];
                } else {
                    return false;
                }
                $url = '';
                if (isset($param[$i]['url'])) {
                    $url = $param[$i]['url'];
                    if (!Validation::url($url, $request, $key)) {
                        return false;
                    }
                }
            }
        }

        return true;
    }
}