<?php

namespace App\Http\Resources;

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

class QuestionResource extends JsonResource
{
    /**
     * @OA\Schema(
     *     schema="QuestionResource",
     *     type="object",
     *     title="Question",
     *     description="Question resource",
     *     @OA\Property(property="id", type="integer", example=1),
     *     @OA\Property(property="title", type="string", example="What is the capital of Japan?"),
     *     @OA\Property(property="description", type="string", nullable=true, example="Choose the correct option"),
     *     @OA\Property(property="type", type="string", enum={"single","multiply","text"}, example="single"),
     *     @OA\Property(property="difficulty", type="integer", example=3),
     *     @OA\Property(
     *         property="variants",
     *         type="array",
     *         nullable=true,
     *         @OA\Items(
     *             type="object",
     *             @OA\Property(property="id", type="integer", example=1),
     *             @OA\Property(property="text", type="string", example="Tokyo")
     *         )
     *     ),
     *     @OA\Property(
     *         property="correct_answers",
     *         type="array",
     *         @OA\Items(type="integer", example=1)
     *     ),
     *     @OA\Property(property="category_id", type="integer", nullable=true, example=3),
     *     @OA\Property(property="category", ref="#/components/schemas/CategoryResource"),
     *     @OA\Property(property="author_id", type="integer", nullable=true, example=2),
     *     @OA\Property(property="author", ref="#/components/schemas/UserResource"),
     *     @OA\Property(property="created_at", type="string", format="date-time", example="2025-11-11T10:00:00.000000Z"),
     *     @OA\Property(property="updated_at", type="string", format="date-time", example="2025-11-11T10:05:00.000000Z")
     * )
     */
    public function toArray(Request $request): array
    {
        return [
            'id' => $this->id,
            'title' => $this->title,
            'description' => $this->description,
            'type' => $this->type,
            'difficulty' => $this->difficulty,
            'variants' => $this->variants,
            'correct_answers' => $this->correct_answers,

            'category_id' => $this->category_id,
            'category' => new CategoryResource($this->whenLoaded('category')),

            'author_id' => $this->author_id,
            'author' => new UserResource($this->whenLoaded('author')),

            'created_at' => $this->created_at,
            'updated_at' => $this->updated_at,
        ];
    }
}