The get_customer Business Logic

get_customer.go

package usecases                                                                                                                                                                                                                              
                                                                                                                       
import "github.com/example/go-abstractions/entities"                                                 
                                                                                                                       
type CustomerGetter interface {                                                                                        
  GetCustomer(customerID uint) (entities.Customer, error)                                                              
}                                                                                                    
                                                                                                                       
func NewGetCustomerUseCase(customerGetter CustomerGetter) func(uint) (entities.Customer, error) {                      
  return func(customerID uint) (entities.Customer, error) {                                                            
    return customerGetter.GetCustomer(customerID)                                                                      
  }                                                                                                                    
}