<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api\Search;

use App\Http\Controllers\Controller;
use App\Http\Resources\ArtworkListResource;
use App\Models\Artwork;
use App\Models\Tag;
use App\Services\ArtworkSearchService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

/**
 * Artwork search endpoints powered by Meilisearch.
 *
 * GET /api/search/artworks?q=&tags[]=&category=&orientation=&sort=
 * GET /api/search/artworks/tag/{slug}
 * GET /api/search/artworks/category/{cat}
 * GET /api/search/artworks/related/{id}
 */
class ArtworkSearchController extends Controller
{
    public function __construct(
        private readonly ArtworkSearchService $search
    ) {}

    /**
     * GET /api/search/artworks
     */
    public function index(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'q'           => ['nullable', 'string', 'max:200'],
            'tags'        => ['nullable', 'array', 'max:10'],
            'tags.*'      => ['string', 'max:80'],
            'category'    => ['nullable', 'string', 'max:80'],
            'orientation' => ['nullable', 'in:landscape,portrait,square'],
            'resolution'  => ['nullable', 'string', 'max:20'],
            'author_id'   => ['nullable', 'integer', 'min:1'],
            'sort'        => ['nullable', 'string', 'regex:/^(created_at|downloads|likes|views):(asc|desc)$/'],
            'per_page'    => ['nullable', 'integer', 'min:1', 'max:100'],
        ]);

        $results = $this->search->search(
            q: (string) ($validated['q'] ?? ''),
            filters: array_filter([
                'tags'        => $validated['tags'] ?? [],
                'category'    => $validated['category'] ?? null,
                'orientation' => $validated['orientation'] ?? null,
                'resolution'  => $validated['resolution'] ?? null,
                'author_id'   => $validated['author_id'] ?? null,
                'sort'        => $validated['sort'] ?? null,
            ]),
            perPage: (int) ($validated['per_page'] ?? 24),
        );

        // Eager-load relations needed by ArtworkListResource
        $results->getCollection()->loadMissing(['user', 'categories.contentType']);

        return ArtworkListResource::collection($results)->response();
    }

    /**
     * GET /api/search/artworks/tag/{slug}
     */
    public function byTag(Request $request, string $slug): JsonResponse
    {
        $tag = Tag::where('slug', $slug)->first();

        if (! $tag) {
            return response()->json(['message' => 'Tag not found.'], 404);
        }

        $results = $this->search->byTag($slug, (int) $request->query('per_page', 24));

        return response()->json([
            'tag'     => ['id' => $tag->id, 'name' => $tag->name, 'slug' => $tag->slug],
            'results' => $results,
        ]);
    }

    /**
     * GET /api/search/artworks/category/{cat}
     */
    public function byCategory(Request $request, string $cat): JsonResponse
    {
        $results = $this->search->byCategory($cat, (int) $request->query('per_page', 24));

        return response()->json($results);
    }

    /**
     * GET /api/search/artworks/related/{id}
     */
    public function related(int $id): JsonResponse
    {
        $artwork = Artwork::with(['tags'])->find($id);

        if (! $artwork) {
            return response()->json(['message' => 'Artwork not found.'], 404);
        }

        $results = $this->search->related($artwork, 12);

        return response()->json($results);
    }
}