<?php

namespace App\Http\Controllers\Legacy;

use App\Http\Controllers\Controller;
use App\Models\Artwork;
use App\Models\ContentType;
use App\Services\ArtworkService;
use Illuminate\Http\Request;
use Illuminate\Pagination\CursorPaginator;
use Illuminate\Database\Eloquent\ModelNotFoundException;
use Illuminate\Support\Facades\Log;

class BrowseController extends Controller
{
    protected ArtworkService $artworks;

    public function __construct(ArtworkService $artworks)
    {
        $this->artworks = $artworks;
    }

    public function index(Request $request)
    {
        $page_title = 'Browse Uploaded Artworks - Photography, Wallpapers and Skins at SkinBase';
        $page_meta_description = "Browse Uploaded Photography, Wallpapers and Skins to one of the world's oldest online social community for artists and art enthusiasts.";
        $page_meta_keywords = 'photography, wallpapers, skins, stock, browse, social, community, artist, picture, photo';

        $perPage = (int) $request->get('per_page', 24);
        $sort = (string) $request->get('sort', 'latest');

        // Canonical browse routes are slug-based (/photography, /wallpapers, /skins, /other, /{type}/{path}).
        // Prevent duplicate query-driven browse URLs.
        $legacyCategory = trim((string) $request->query('category', ''), '/');
        if ($legacyCategory !== '') {
            return redirect('/' . strtolower($legacyCategory), 301);
        }
        $legacyContentType = trim((string) $request->query('content_type', ''), '/');
        if ($legacyContentType !== '') {
            return redirect('/' . strtolower($legacyContentType), 301);
        }

        try {
            /** @var CursorPaginator $artworks */
            $artworks = $this->artworks->browsePublicArtworks($perPage, $sort);
        } catch (ModelNotFoundException $e) {
            abort(404);
        }

        if (count($artworks) === 0) {
            Log::warning('browse.missing_artworks', [
                'url' => $request->fullUrl(),
            ]);
            abort(410);
        }

        // Shape data for the legacy Blade while using authoritative tables only.
        $artworks->getCollection()->transform(fn (Artwork $artwork) => $this->mapArtwork($artwork));

        $rootCategories = ContentType::orderBy('id')
            ->get(['name', 'slug'])
            ->map(fn (ContentType $type) => (object) [
                'name' => $type->name,
                'url' => '/' . strtolower($type->slug),
            ]);

        $page_canonical = url('/browse');

        return view('legacy::browse', compact('page_title', 'page_meta_description', 'page_meta_keywords', 'page_canonical', 'artworks', 'rootCategories'));
    }

    private function mapArtwork(Artwork $artwork): object
    {
        $primaryCategory = $artwork->categories->sortBy('sort_order')->first();
        $categoryPath = $primaryCategory?->full_slug_path;
        $contentTypeSlug = $primaryCategory?->contentType?->slug;
        $webUrl = $contentTypeSlug && $categoryPath
            ? '/' . strtolower($contentTypeSlug) . '/' . strtolower($categoryPath) . '/' . $artwork->slug
            : null;

        $present = \App\Services\ThumbnailPresenter::present($artwork, 'md');

        return (object) [
            'id' => $artwork->id,
            // Include ordering parameter used by cursor paginator so links can be generated
            'published_at' => $artwork->published_at?->toAtomString(),
            'slug' => $artwork->slug,
            'name' => $artwork->title,
            'category_name' => $primaryCategory->name ?? '',
            'gid_num' => $primaryCategory ? ((int) $primaryCategory->id % 5) * 5 : 0,
            'thumb' => $present['url'],
            'thumb_srcset' => $present['srcset'] ?? $present['url'],
            'uname' => $artwork->user->name ?? 'Skinbase',
            'url' => $webUrl ?? '#',
        ];
    }
}