<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Http\Resources\PostResource;
use App\Services\SearchService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class SearchController extends Controller
{
    public function __construct(
        protected SearchService $searchService
    ) {}

    public function posts(Request $request): JsonResponse
    {
        $request->validate([
            'q' => 'required|string|min:2',
            'category_id' => 'nullable|exists:categories,id',
            'author_id' => 'nullable|exists:users,id',
            'per_page' => 'nullable|integer|min:1|max:100',
        ]);

        $perPage = $request->input('per_page', 10);

        $results = $this->searchService->searchPosts(
            $request->input('q'),
            $request->only(['category_id', 'author_id']),
            $perPage
        );

        return response()->json([
            'data' => PostResource::collection($results),
            'pagination' => [
                'total' => $results->total(),
                'per_page' => $results->perPage(),
                'current_page' => $results->currentPage(),
                'last_page' => $results->lastPage(),
            ],
        ]);
    }

    public function relatedPosts(Request $request, int $postId): JsonResponse
    {
        $post = Post::findOrFail($postId);
        $relatedPosts = $this->searchService->getRelatedPosts($post);

        return response()->json([
            'data' => PostResource::collection($relatedPosts),
        ]);
    }
}