<?php

namespace App\Http\Resources;

use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;

/**
 * @OA\Schema(
 *     schema="CategoryResource",
 *     type="object",
 *     title="Category",
 *     description="Category resource with dynamic count",
 *     @OA\Property(
 *         property="id",
 *         type="integer",
 *         example=1
 *     ),
 *     @OA\Property(
 *         property="name",
 *         type="string",
 *         example="Books"
 *     ),
 *     @OA\Property(
 *         property="created_at",
 *         type="string",
 *         format="date-time",
 *         example="2025-11-10T18:00:00Z"
 *     ),
 *     @OA\Property(
 *         property="questions_count",
 *         type="integer",
 *         example=5,
 *         description="Dynamic count of questions by category"
 *     ),
 *     @OA\Property(
 *         property="user_tests_count",
 *         type="integer",
 *         example=5,
 *         description="Dynamic count of user tests"
 *     )
 * )
 */
class CategoryResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        return [
            'id' => $this->id,
            'name' => $this->name,
            'created_at' => $this->created_at,
            'questions_count' => $this->when(isset($this->questions_count), $this->questions_count, 0),
            'user_tests_count' => $this->when(isset($this->user_tests_count), $this->user_tests_count, 0),
        ];
    }
}