<?php

namespace core\site\structure;
use common\faq\question;
use core\site\structure\HTMLPage as Page;
use blog\news;
class SchemaOrg {

    var $faqLink = '#faq';
    var $newsLink = '#news';

    var $faq = [];
    var $news = [];
    var $mainID;

    public static function formatTimeSeo($x){
        return date('Y-m-d\TH:i:sP', $x);
    }
    function addFaqArray($questions) {
        foreach ($questions as $q) $this->addFaq($q);
    }
    function addFaq($question) {
        $this->faq[] = [
            '@type' => 'Question',
            'name' => $question[Question::$QUESTION],
            'acceptedAnswer' => [
                '@type' => 'Answer',
                'text' => $question[Question::$ANSWER]
            ]
        ];
    }

    function addNewsArray($news) {
        foreach ($news as $n) $this->addNews($n);
    }

    function addNews($news) {
        $id = \Site::sectionUrl(substr($news['link'],1),true);
        if($news['schemaorg_main']) $this->mainID = $id;

         $el = [
            '@type' => 'NewsArticle',
            'mainEntityOfPage' => [
                '@type' => 'WebPage',
                '@id' => \Site::sectionUrl(substr($news['link'],1),true)
            ],
            'headline' => News::getName($news),
            'datePublished' => self::formatTimeSeo($news[News::$CREATED]),
            'dateModified'  => self::formatTimeSeo($news[News::$UPDATED]),
            'author' => $news['author'],
            'publisher' => $news['publisher'],
            'description' => $news[News::$ANNOTATION]
        ];
        if($news['preview']) {
            $el['image'] = \Site::sectionUrl(substr($news['preview'],1),true);
        }

        $this->news[] = $el;
    }


    function toJson():array
    {
        $url = Page::$canonical;
        $faq = null;
        if($this->faq){
            $a = [];
            foreach ($this->faq as $q){
                $a[] = $q;
            }
            $faq = [
                "@type"=> "FAQPage",
                "@id"=> $url.$this->faqLink,
                'mainEntity'=>$a
            ];
        }

        $listItems = [];
        if($this->news) {
            $listItems[] = [
                'title'=>'Новости',
                'id'=>$url.$this->newsLink,
                'list'=>$this->news,
            ];
        }

        $graphListItems = null;
        if($listItems){
            $graphListItems = [];
            foreach ($listItems as $v) {
                $list = [];
                foreach($v['list'] as $el){
                    $list[] = [
                        '@type' => 'ListItem',
                        'item'=>$el,
                    ];
                }

                $graphListItems[] = [
                    '@type' => 'ItemList',
                    '@id' => $v['id'],
                    'name' => $v['title'],
                    'numberOfItems' => count($v['list']),
                    'itemListOrder' => 'ItemListUnordered',
                    'itemListElement'=>$list
                ];
            }
        }

        $main =
            [
                '@type' => 'WebPage',
                '@id' => $url,
                'name' => Page::getTitleText(),
                'description' => Page::$description,
                'url' => $url,
                //'mainEntity' => [ '@id' => 'https://site.com/games/main-game-page/#main-product' ]
            ];
        if($this->mainID) $main['mainEntity'] = ['@id'=>$this->mainID];

        return [
            "@context"=> "https://schema.org",
            "@graph"=>
                array_diff(
                    array_merge(
                        [$main,$faq,]
                        ,$graphListItems
                    )
                , [null]),

        ];
    }


}