<?php

namespace App\Http\Requests\Fo;

use App\Enums\CookingModeEnum;
use App\Enums\DifficultyEnum;
use App\Enums\PreparationTimeEnum;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class RecipesIndexRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return boolean
     */
    public function authorize(): bool
    {
        return true;
    }

    /**
     * Prepare the data for validation.
     *
     * @return void
     */
    public function prepareForValidation(): void
    {
        $this->merge([
            'cooking_mode_enum'     => $this->makeEnum(CookingModeEnum::class, $this->get('cooking_mode_enum')),
            'preparation_time_enum' => $this->makeEnum(PreparationTimeEnum::class, $this->get('preparation_time_enum')),
            'difficulty_enum'       => $this->makeEnum(DifficultyEnum::class, $this->get('difficulty_enum'))
        ]);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array|string>
     */
    public function rules(): array
    {
        return [
            'cooking_mode_enum'     => ['nullable', Rule::enum(CookingModeEnum::class)],
            'preparation_time_enum' => ['nullable', Rule::enum(PreparationTimeEnum::class)],
            'difficulty_enum'       => ['nullable', Rule::enum(DifficultyEnum::class)]
        ];
    }

    /**
     * Make enum handle nullable case.
     *
     * @param  string      $enum_class
     * @param  string|null $query_index
     * @return string|integer|null
     */
    private function makeEnum(string $enum_class, ?string $query_index): string|int|null
    {
        if (!$query_index) {
            return null;
        }
        return optional(call_user_func([$enum_class, 'make'], $query_index))->value();
    }
}