ldc-crm/app/Policies/CustomerPolicy.php

<?php

namespace App\Policies;

use App\Models\Customer;
use App\Models\Service;
use Illuminate\Auth\Access\HandlesAuthorization;
use App\Policies\Rules\UserStaticRules as USR;

class CustomerPolicy
{
    use HandlesAuthorization;

    /**
     * View a Customer.
     *
     * @return boolean
     */
    public function view(): bool
    {
        return USR::everyOne();
    }

    /**
     * View any a Customer.
     *
     * @return boolean
     */
    public function viewAny(): bool
    {
        return USR::everyOne();
    }

    /**
     * Create a Customer.
     *
     * @return boolean
     */
    public function create(): bool
    {
        return USR::noOne();
    }

    /**
     * Update a Customer.
     *
     * @return boolean
     */
    public function update(): bool
    {
        return USR::noOne();
    }

    /**
     * Delete a Customer.
     *
     * @return boolean
     */
    public function delete(): bool
    {
        return USR::everyOne();
    }

    /**
     * Check if the customer belongs to the service.
     *
     * @param \App\Models\Service  $service
     * @param \App\Models\Customer $customer
     * @return boolean
     */
    public function customerBelongsToService(Service $service, Customer $customer)
    {
        return !\is_null($customer->login($service->brand));
    }
}