<?php

namespace App\Http\Controllers;

use App\Catalog\CategoryListing;
use Illuminate\Http\Response;
use Modules\Core\Catalog\Services\CollectionService;
use Modules\Core\Catalog\Services\ProductService;

class CategoryController extends Controller
{
    public function __construct(
        private readonly ProductService $products,
        private readonly CollectionService $collections,
    ) {}

    public function show(string $locale, int $collection)
    {
        $collectionData = $this->collections->getById($collection);
        abort_if($collectionData === null, Response::HTTP_NOT_FOUND);

        $listing = CategoryListing::fromRequest(request());
        $filters = $listing->filters($collectionData['id']);
        $perPage = 12;

        // Listing/filtering reads from the Meilisearch index via ProductService,
        // not Eloquent — see Modules\Core\Catalog\Services\ProductService. list() returns a
        // real LengthAwarePaginator of plain arrays (already localized/flattened),
        // not Product models. Sort/filter/page all come from the query string via
        // CategoryListing, which is the single source of truth for that state.
        $products = $this->products->list(
            filters: $filters,
            perPage: $perPage,
            page: $listing->page,
            sort: $listing->sort,
        )->through(fn (array $product) => [
            'name' => $product['name'],
            'price' => $product['price'],
            'image' => $product['media'][0]['url'] ?? null,
            'href' => route('product.show', ['id' => $product['id']]),
        ])->appends($listing->query(['page' => null]));

        // Slider bounds — the price span of everything matching the *other*
        // filters (priceRange() drops the price filter itself, so the handles
        // don't collapse to whatever's already selected). Whole euros.
        $priceRange = $this->products->priceRange($filters);
        $priceFloor = $priceRange['min'] !== null ? (int) floor($priceRange['min']) : null;
        $priceCeil = $priceRange['max'] !== null ? (int) ceil($priceRange['max']) : null;

        // A price param is only a real filter if it's tighter than the bounds —
        // drives whether the "clear" link shows.
        $priceFiltered = ($listing->minPrice !== null && $listing->minPrice > ($priceFloor ?? PHP_INT_MIN))
            || ($listing->maxPrice !== null && $listing->maxPrice < ($priceCeil ?? PHP_INT_MAX));

        return view('category.show', [
            'collection' => $collectionData,
            'products' => $products,
            'listing' => $listing,
            'priceFloor' => $priceFloor,
            'priceCeil' => $priceCeil,
            'priceFiltered' => $priceFiltered,
        ]);
    }
}