ldc-crm/app/Http/Requests/Api/V4/GetQuestionStatsRequest.php

<?php

namespace App\Http\Requests\Api\V4;

use App\Http\Requests\Api\V4\BaseApiRequest;
use Illuminate\Support\Carbon;
use Illuminate\Validation\ValidationException;

class GetQuestionStatsRequest extends BaseApiRequest
{
    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     * @throws \Illuminate\Validation\ValidationException If given dates are unparsable of
     *                                                    period is bigger than 3 months.
     * @throws \Exception If carbon date processing failed.
     */
    public function rules(): array
    {
        try {
            if (Carbon::parse($this->end)->floatDiffInMonths(Carbon::parse($this->start)) > 3) {
                throw ValidationException::withMessages([
                    'Vous devez sélectionner une période de maximum 3 mois'
                ]);
            }
        } catch (\Exception $e) {
            if (\get_class($e) !== ValidationException::class) {
                throw ValidationException::withMessages([
                    'Les dates sélectionnées ne sembles pas être valides'
                ]);
            }
            throw $e;
        }
        return [
            'start' => 'required|date|date_format:Y-m-d',
            'end'   => 'required|date|date_format:Y-m-d|after_or_equal:start',
        ];
    }
}