<?php

namespace App\Http\Controllers;

use App\Models\Category;
use App\Models\ContentType;
use Illuminate\Http\Request;
use Illuminate\Pagination\LengthAwarePaginator;

class CategoryPageController extends Controller
{
    public function show(Request $request, string $contentTypeSlug, string $categoryPath = null)
    {
        $contentType = ContentType::where('slug', strtolower($contentTypeSlug))->first();
        if (! $contentType) {
            abort(404);
        }

        if ($categoryPath === null || $categoryPath === '') {
            // No category path: show content-type landing page (e.g., /wallpapers)
            $rootCategories = $contentType->rootCategories()->orderBy('sort_order')->orderBy('name')->get();
            $page_title = $contentType->name;
            $page_meta_description = $contentType->description ?? ($contentType->name . ' artworks on Skinbase');

            return view('legacy.content-type', compact(
                'contentType',
                'rootCategories',
                'page_title',
                'page_meta_description'
            ));
        }

        $segments = array_filter(explode('/', $categoryPath));
        if (empty($segments)) {
            return redirect('/browse-categories');
        }

        // Traverse categories by slug path within the content type
        $current = Category::where('content_type_id', $contentType->id)
            ->whereNull('parent_id')
            ->where('slug', strtolower(array_shift($segments)))
            ->first();

        if (! $current) {
            abort(404);
        }

        foreach ($segments as $slug) {
            $current = $current->children()->where('slug', strtolower($slug))->first();
            if (! $current) {
                abort(404);
            }
        }

        $category = $current;
        $subcategories = $category->children()->orderBy('sort_order')->orderBy('name')->get();
        $rootCategories = $contentType->rootCategories()->orderBy('sort_order')->orderBy('name')->get();

        // Placeholder artworks paginator (until artwork data is wired).
        $page = max(1, (int) $request->query('page', 1));
        $artworks = new LengthAwarePaginator([], 0, 40, $page, [
            'path' => $request->url(),
            'query' => $request->query(),
        ]);

        $page_title = $category->name;
        $page_meta_description = $category->description ?? ($contentType->name . ' artworks on Skinbase');
        $page_meta_keywords = strtolower($contentType->slug) . ', skinbase, artworks, wallpapers, skins, photography';

        return view('legacy.category-slug', compact(
            'contentType',
            'category',
            'subcategories',
            'rootCategories',
            'artworks',
            'page_title',
            'page_meta_description',
            'page_meta_keywords'
        ));
    }
}