<?php

namespace App\Http\SymfonyCastDl;

use DiDom\Document;
use GuzzleHttp\Psr7\Response;

class HtmlParser
{
    public function getCsrfToken(Response $response): string
    {
        $document = new Document($response->getBody()->getContents());
        return $document->first('input[name="_csrf_token"]')->attr('value');
    }

    public function getCourses(Response $response): array
    {
        $courses = [];
        $document = new Document($response->getBody()->getContents());
        foreach ($document->find('div.js-course-item') as $courseItem) {
            $course = [];
            $course['name'] = $courseItem->first('h3')->text();
            $course['link'] = $courseItem->first('a')->attr('href');
            $course['status'] = $courseItem->attr('data-status');
            $course['chapter-count'] = $courseItem->attr('data-chapter-count');
            $course['times-watched'] = $courseItem->attr('data-times-watched');

            $courses[] = $course;
        }
        return $courses;
    }

    public function getCourseDetails(Response $response): array
    {
        $document = new Document($response->getBody()->getContents());
        $info = ['chapters' => []];
        foreach ($document->find('ul.chapter-list li') as $chapter) {
            $info['chapters'][] = [
                'link' => $chapter->first('a')->attr('href'),
                'title' => preg_replace('/\v(?:[\v\h]+)/', '', $chapter->first('.col')->text()),
                'duration' => $chapter->first('.length-styling')->text(),
            ];
        }

        return $info;
    }

}