ldc-crm/app/Http/Requests/Bo/StatsByBrandRequest.php

<?php

namespace App\Http\Requests\Bo;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Carbon;
use Illuminate\Validation\ValidationException;

class StatsByBrandRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return boolean
     */
    public function authorize(): bool
    {
        return auth('backend')->check();
    }

    /**
     * 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 1 year.
     * @throws \Exception If carbon date processing failed.
     */
    public function rules(): array
    {
        if ($this->post()) {
            try {
                if ((Carbon::parse($this->end)->diffInDays(Carbon::parse($this->start)) + 1) > 365) {
                    throw ValidationException::withMessages([
                        'Vous devez sélectionner une période de maximum 1 ans'
                    ]);
                }
            } catch (\Exception $e) {
                if (\get_class($e) !== ValidationException::class) {
                    throw ValidationException::withMessages([
                        'Les dates séléectionnées ne sembles pas être valides'
                    ]);
                }
                throw $e;
            }
            return [
                'brand' => 'required|exists:brands,id',
                'start' => 'required|date|date_format:Y-m-d',
                'end'   => 'required|date|date_format:Y-m-d|after_or_equal:start',
            ];
        } //end if
        return [];
    }
}