mesreleves-php/app/Http/Requests/StoreReleveRequest.php

<?php

namespace App\Http\Requests;

use App\Enums\CalendarType;
use App\Enums\FieldType;
use App\Models\Source;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rules\Enum;

class StoreReleveRequest extends FormRequest
{
    public function authorize(): bool
    {
        $source = $this->route('source');
        return $this->user()->can('create', [\App\Models\Releve::class, $source]);
    }

    public function rules(): array
    {
        /** @var Source $source */
        $source = $this->route('source');
        $source->loadMissing('sourceType.fields');

        $rules = [];

        foreach ($source->sourceType->fields as $field) {
            $base = "data.{$field->name}";

            switch ($field->type) {
                case FieldType::Date:
                    $rules["{$base}.valeur"]     = [$field->required ? 'required' : 'nullable', 'string', 'max:50'];
                    $rules["{$base}.calendrier"]  = ['required', new Enum(CalendarType::class)];
                    break;

                case FieldType::Boolean:
                    $rules[$base] = ['nullable', 'boolean'];
                    break;

                case FieldType::Number:
                    $rules[$base] = [$field->required ? 'required' : 'nullable', 'numeric'];
                    break;

                case FieldType::Select:
                    $options = $field->options ?? [];
                    $rules[$base] = [$field->required ? 'required' : 'nullable', 'string', 'in:' . implode(',', $options)];
                    break;

                case FieldType::Place:
                    $rules[$base] = [$field->required ? 'required' : 'nullable', 'integer', 'exists:lieux,id'];
                    break;

                default: // text, textarea
                    $rules[$base] = [$field->required ? 'required' : 'nullable', 'string', 'max:2000'];
            }
        }

        return $rules;
    }
}