<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Http\Resources\ArtworkListResource;
use App\Services\ArtworkService;
use Illuminate\Http\Request;
use Illuminate\Database\Eloquent\ModelNotFoundException;

class BrowseController extends Controller
{
    protected ArtworkService $service;

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

    /**
     * GET /api/v1/browse
     * Public browse feed powered by authoritative artworks table.
     */
    public function index(Request $request)
    {
        $perPage = $this->resolvePerPage($request);
        $sort = (string) $request->get('sort', 'latest');

        $paginator = $this->service->browsePublicArtworks($perPage, $sort);
        $paginator->appends([
            'limit' => $perPage,
            'sort' => $sort,
        ]);

        return ArtworkListResource::collection($paginator);
    }

    /**
     * GET /api/v1/browse/{content_type}
     * Browse by content type slug.
     */
    public function byContentType(Request $request, string $contentTypeSlug)
    {
        $perPage = $this->resolvePerPage($request);
        $sort = (string) $request->get('sort', 'latest');

        try {
            $paginator = $this->service->getArtworksByContentType($contentTypeSlug, $perPage, $sort);
        } catch (ModelNotFoundException $e) {
            abort(404);
        }

        $paginator->appends([
            'limit' => $perPage,
            'sort' => $sort,
        ]);

        if ($paginator->count() === 0) {
            return response()->json(['message' => 'Gone'], 410);
        }

        return ArtworkListResource::collection($paginator);
    }

    /**
     * GET /api/v1/browse/{content_type}/{category_path}
     * Browse by content type + category path (slug segments).
     */
    public function byCategoryPath(Request $request, string $contentTypeSlug, string $categoryPath)
    {
        $perPage = $this->resolvePerPage($request);
        $sort = (string) $request->get('sort', 'latest');

        $slugs = array_merge([
            strtolower($contentTypeSlug),
        ], array_values(array_filter(explode('/', trim($categoryPath, '/')))));

        try {
            $paginator = $this->service->getArtworksByCategoryPath($slugs, $perPage, $sort);
        } catch (ModelNotFoundException $e) {
            abort(404);
        }

        $paginator->appends([
            'limit' => $perPage,
            'sort' => $sort,
        ]);

        if ($paginator->count() === 0) {
            return response()->json(['message' => 'Gone'], 410);
        }

        return ArtworkListResource::collection($paginator);
    }

    private function resolvePerPage(Request $request): int
    {
        $limit = (int) $request->query('limit', 0);
        $perPage = (int) $request->query('per_page', 0);

        $value = $limit > 0 ? $limit : ($perPage > 0 ? $perPage : 24);

        return min(max($value, 1), 100);
    }
}