static void Main(string[] args)
{
//Here is a small project which prints out a list of customers to the Output window.
//It's the beginning of a sales system which stores the details of customers and staff members.
//This project will compile and run but the code is in need of refactoring because breaches the principles of Clean Code and SOLID.
//Please read, run and experiment with it as much as you require and refactor it to the best of your ability to make it less esoteric and more maintainable.
//You can change any of the code in this project apart from the section marked 'Code that must not change'
//N.B. The output of the code must not change
var customerService = new CustomerService();
var staffService = new StaffService();
customerService.Add(CustomerService.GetDefault());
customerService.Add(new Customer(customerService.GetIndex(), "Emma", CustomerType.New));
customerService.Add(new Customer(customerService.GetIndex(), "James", CustomerType.Existing));
customerService.Add(new Customer(customerService.GetIndex(), "Ricardo", CustomerType.New));
customerService.Add(new Customer(customerService.GetIndex(), "Paul", CustomerType.Archived));
staffService.Add(StaffService.GetDefault());
staffService.Add(new StaffMember(staffService.GetIndex(), "Dave", StaffMemberType.Existing));
staffService.Add(new StaffMember(staffService.GetIndex(), "Penny", StaffMemberType.Archived));
staffService.Add(new StaffMember(staffService.GetIndex(), "Dan", StaffMemberType.New));
staffService.Add(new StaffMember(staffService.GetIndex(), "Mark", StaffMemberType.Existing));
var customers = customerService.GetAll();
var staffMembers = staffService.GetAll();
// In order to Make a sale use OrderService Class and CreateOrder method,
// Normaly this parameters will be injected using dependency injeciton
var orderService = new OrderService(staffService, customerService);
orderService.CreateOrder(customers.FirstOrDefault().ID, staffMembers.FirstOrDefault().ID, null);
Debug.Print($"\r\n{AppHelper.GetApplicationName()}:");
/////////////////////////////
//Code that must not change//
/////////////////////////////
foreach (var customer in customers)
{
Debug.Print($"Customer name: {PersonHelper.GetPersonName(customer)} - List Order: {customer.Index} - Customer Type: {PersonHelper.GetPersonType(customer)}");
}
foreach (var staffMember in staffMembers)
{
Debug.Print($"Staff Member name: {PersonHelper.GetPersonName(staffMember)} - List Order: {staffMember.Index} - Staff Member Type: {PersonHelper.GetPersonType(staffMember)}");
}
/////////////////////////////////
//end code that must not change//
/////////////////////////////////
Console.ReadLine();
}