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How to add Category Product Count to JSON-LD?
I'm an absolute newbie to Opencart, as well as Twig and SQL.
Currently trying to add JSON-LD on categories page:
let min_price = $('input#filter_price_min').val();
let max_price = $('input#filter_price_max').val();

data = {
               "@context": "https://schema.org/",
                       "@type": "Product",
                       "name": "{{ heading_title }}",
                       "image": "{{ products[0].thumb }}",
                       "offers": {
                          "@type": "AggregateOffer",
                          "lowPrice": min_price,
                          "highPrice": max_price,
                          "offerCount": "",
                                   "priceCurrency": "RUB"
                                               },
            }

I've tried to edit Controller's category.php, but couldn't succeed
The question is - how to get this value: quantity of products of a certain category

Upd. Solved
Needed to add $data['product_total'] = $product_total; right after $data['results'] = ... / $limit)); in /catalog/controller/product/category.php directory
and {{ product_total }} to JSON LD
Another main thing to do is to update modificators in opencart admin panel (admin panel --> modules --> modificators)
