ldc-supportweb/app/Providers/AuthServiceProvider.php

<?php

namespace App\Providers;

use App\Enums\Users\RoleEnum;
use App\Models\User;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Gate;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The model to policy mappings for the application.
     *
     * @var array<class-string, class-string>
     */
    protected $policies = [];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot(): void
    {
        $this->registerPolicies();

        Gate::define('isAdmin', function (User $user) {
            return \auth()->check() && ($user->role->equals(RoleEnum::developper) or
                $user->role->equals(RoleEnum::admin));
        });

        Gate::define('isDev', function (User $user) {
            return \auth()->check() && $user->role->equals(RoleEnum::developper);
        });

        Gate::define('isClient', function (User $user) {
            return \auth()->check() && $user->role->equals(RoleEnum::client);
        });
    }
}