<?php

namespace Krzysiej\RyobiCrawler\Controller;

use Krzysiej\RyobiCrawler\Models\Product;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;

final class CategoryController extends BaseController
{
    #[Route('/category/{category?}',  name: 'app_category')]
    public function __invoke(?string $category): Response
    {
        if($this->cache->getItem('list_category_'.$category)->isHit()) {
            return $this->render('productList.html.twig', ['listType' => 'category_'.$category]);
        }

        /** @var Product[] $products */
        $products = Product::with(['price', 'lowestPrice'])
            ->selectRaw('products.*')
            ->distinct('products.id')
            ->when(!is_null($category) , fn ($q) => $q->whereRaw('json_each.value = ?', [$category]))
            ->fromRaw('products, json_each(products.categories)')
            ->orderByDesc('starred')
            ->orderByDesc('created_by')
            ->get();

        $categoriesTree = [];

        foreach ($products as $product) {
            $categoriesTree = $this->addToTree($product->categories, $categoriesTree);
        }

        return $this->render('productList.html.twig', ['products' => $products, 'listType' => 'category_' . $category, 'category' => $category, 'categoryTree' => $categoriesTree]);
    }

    private function addToTree(array $categories, mixed $categoriesTree)
    {
        $tmp = &$categoriesTree;
        foreach ($categories as $category) {
            if (empty($tmp[$category])) {
                $tmp[$category] = ['count' => 0];
            }
            $tmp = &$tmp[$category];
            $tmp['count']++;
        }

        return $categoriesTree;
    }
}