Framework agnostic business logic

[michalmytych]

• Separate all Laravel elements with adapter Interfaces: eg: LoggerInterface -> Log Laravel facade. Bind interfaces and concretes in AppServiceProvider.
• Separate ORM from business logic -> Repository pattern (inject Eloquent model in concrete). In repositories map all models to domain entities, ore just use Laravel models as plain PHP object: $model->property, $model->relation (Collection).
• Introduce own Collection (maybe implementing specific contract). Or use Laravel collection as library-like code.
• Integrations related code move to separate modules and call through adapter interfaces.
• Bind Laravel Events to some strings an resolve events in business logic like this:

/* @var EventDispatcherInterface $eventDispatcher Event dispatcher adapter **/
$eventDispatcher->dispatch('transaction_added', $transaction->id);

$eventsBindings = [
     'transaction_added' => [
          \App\Events\TransactionAdded::class,  [ 'transactionId' ]
     ]
];