<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Http\Resources\ArtworkResource;
use App\Models\Artwork;
use App\Services\ArtworkNavigationService;
use App\Services\ThumbnailPresenter;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class ArtworkNavigationController extends Controller
{
    public function __construct(private readonly ArtworkNavigationService $navigation) {}

    /**
     * GET /api/artworks/navigation/{id}
     *
     * Returns prev/next published artworks by the same author.
     */
    public function neighbors(int $id): JsonResponse
    {
        $artwork = Artwork::published()
            ->select(['id', 'user_id', 'title', 'slug'])
            ->find($id);

        if (! $artwork) {
            return response()->json([
                'prev_id'   => null, 'next_id'   => null,
                'prev_url'  => null, 'next_url'  => null,
                'prev_slug' => null, 'next_slug' => null,
                'prev_preview' => null, 'next_preview' => null,
            ]);
        }

        return response()->json($this->navigation->navigationFor($artwork));
    }

    /**
     * GET /api/artworks/{id}/page
     *
     * Returns full artwork resource by numeric ID for client-side (no-reload) navigation.
     */
    public function pageData(Request $request, int $id): JsonResponse
    {
        if ($request->boolean('prefetch')) {
            return $this->prefetchData($id);
        }

        $artwork = Artwork::with(['user.profile', 'categories.contentType', 'categories.parent.contentType', 'tags', 'stats'])
            ->published()
            ->find($id);

        if (! $artwork) {
            return response()->json(['error' => 'Not found'], 404);
        }

        $resource = (new ArtworkResource($artwork))->toArray(request());
        $resource['navigation'] = $this->navigation->navigationFor($artwork);

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

    private function prefetchData(int $id): JsonResponse
    {
        $artwork = Artwork::query()
            ->published()
            ->select(['id', 'title', 'slug', 'hash', 'file_path', 'file_name'])
            ->find($id);

        if (! $artwork) {
            return response()->json(['error' => 'Not found'], 404);
        }

        return response()->json([
            'id' => (int) $artwork->id,
            'title' => (string) $artwork->title,
            'slug' => (string) $artwork->slug,
            'thumbs' => [
                'md' => ThumbnailPresenter::present($artwork, 'md'),
                'lg' => ThumbnailPresenter::present($artwork, 'lg'),
            ],
        ]);
    }
}