// Method to remove customer from the crm file
public void RemoveCustomerSubmenu(bool clear = true)
{
if (clear)
{
Console.Clear();
}
Console.WriteLine("### Delete Customer Submenu ###\n");
DeleteCRMValidationInput();
// Ensure that the desired ID to be deleted exists in the customer list to execute deletion
if (Crm.CustomerList.Any(customer => customer.ID == DeleteRecordID))
{
// deletion is successful if customer is not renting a vehicle
if (Crm.RemoveCustomer(DeleteRecordID, Fleet))
{
Crm.SaveToFile();
Console.WriteLine($"\nSuccessfully deleted the Customer with an ID of '{DeleteRecordID}'");
}
else
{
Console.WriteLine($"\nDeletion Unsuccessful. Customer '{DeleteRecordID}' is currently renting a vehicle.");
}
LastMRRCscreen(() => SubMenu("Customer"), () => RemoveCustomerSubmenu());
}
// If the desired ID to be deleted is not in the list, prompt a message
else
{
Console.Clear();
Console.WriteLine("Customer with an ID of '{0}' does not exist in the Customers List\n", DeleteRecordID);
RemoveCustomerSubmenu(false);
LastMRRCscreen(() => SubMenu("Customer"), () => RemoveCustomerSubmenu());
}
}
// Main method interface to do modify operations on vehicle
public void ModifyVehicleSubmenu(bool clear = true)
{
if (clear)
{
Console.Clear();
}
Console.WriteLine("### Modify Vehicle Submenu ###\n");
// Require the operator to enter the vehicle registration to be modified
ModifyRegoValidInput();
// Save the changed ID to -1 in case customer decideds to retain the same ID in the modification menu.
Crm.SaveToFile();
string subMenu = "a) Modify Default Vehicle Fields" + "\nb) Modify All Vehicle Fields";
Console.WriteLine("\nPlease enter a character from the options below:\n");
Console.WriteLine(subMenu);
// Return the vehicle which matches the provided registration to modify and assign to vehicle object
Vehicle vehicle = Fleet.GetVehicle(regoToModify);
// Wait for user to input the next key
inputkey = Console.ReadKey();
switch (inputkey.Key)
{
case A_Pressed:
ModifyVehicle(vehicle);
break;
case B_Pressed:
ModifyVehicle(vehicle, true);
break;
case H_Pressed:
MRRCInterface();
break;
case Backspace_Pressed:
ModifyVehicleSubmenu();
break;
case Escape_Pressed:
QuitMessage();
break;
case Q_Pressed:
SubMenu("Fleet");
break;
default: // if any key other than above listed is pressed, do:
Console.Clear();
Console.WriteLine("You Pressed '{0}', Please enter a valid option\n", inputkey.Key.ToString());
ModifyVehicleSubmenu(false);
break;
}
}
// Method to modify a specific customer which exists in the crm file
public void ModifyCustomerSubmenu(bool clear = true)
{
if (clear)
{
Console.Clear();
}
Console.WriteLine("### Modify Customer Submenu ###\n");
ModifyCRMValidationInput();
// Return the customer which matches the provided ID to modify and assign to modifiedcustomer object
Customer customer = Crm.GetCustomer(IDtoMofify);
// if the returned customer in the modified customer object is not null, proceed to modify
if (customer != null)
{
// Store old customers ID, title, first and last names into variables
int OldID = customer.ID;
string OldTitle = customer.title, OldFirstName = customer.firstName, OldLastName = customer.lastName;
// Set the customer ID to the highest id value + 1, in case the customer wants to retain his/her ID and only wants
// to modify the fields. We set the ID to this so that the validation doesnt prompt an error that the ID wanting
// to be retained already exists. If the ID is retained, there is still unique ID's in the list
int HighestID = Crm.CustomerList.Max(Customer => Customer.ID) + 1;
customer.ID = HighestID;
// Save the changed ID value in case customer decideds to retain the same ID in the modification menu.
Crm.SaveToFile();
ModifyIDValidationInput();
customer.ID = IDtoMofify;
Console.Write("Title*: ");
title = StringToTitleCase(Console.ReadLine());
customer.title = title;
Console.Write("FirstName*: ");
firstName = StringToTitleCase(Console.ReadLine());
customer.firstName = firstName;
Console.Write("LastName*: ");
lastName = StringToTitleCase(Console.ReadLine());
customer.lastName = lastName;
GenderValidationInput();
customer.gender = Gender;
DOBValidationInput();
customer.DOB = DOB;
Console.Write("\nSuccessfully modified customer '{0} - {1} {2} {3}' to '{4} {5} {6} {7}' within the customers list",
OldID, OldTitle, OldFirstName, OldLastName, IDtoMofify, title, firstName, lastName);
Crm.SaveToFile();
LastMRRCscreen(() => SubMenu("Customer"), () => ModifyCustomerSubmenu());
}
// If the returned customer in the object is null, then the customer does not exist
else
{
Console.Clear();
Console.WriteLine("Customer with an ID of '{0}' does not exist in the Customers List\n", IDtoMofify);
ModifyCustomerSubmenu(false);
LastMRRCscreen(() => SubMenu("Customer"), () => ModifyCustomerSubmenu());
}
}
// Method which holds the interface for adding a customer to the crm file
public void NewCustomerSubmenu(bool clear = true)
{
if (clear)
{
Console.Clear();
}
Console.WriteLine("### New Customer Submenu ###\n");
Console.WriteLine("Please fill the following fields (fields with * are required)\n");
Console.Write("Title*: ");
title = StringToTitleCase(Console.ReadLine());
Console.Write("FirstName*: ");
firstName = StringToTitleCase(Console.ReadLine());
Console.Write("LastName*: ");
lastName = StringToTitleCase(Console.ReadLine());
GenderValidationInput();
DOBValidationInput();
// Determine the highest ID number in the list
int HighestID;
// if the list has any customer, we determine the max ID using the max method on the list of objects
if (Crm.CustomerList.Count() > 0)
{
HighestID = Crm.CustomerList.Max(Customer => Customer.ID);
}// If the list has no customers, we make the id to be -1, so when the first customer is added, it will
// increment by one, which will be 0 (-1 + 1 = 0).
else
{
HighestID = -1;
}
// The customer id number must be unqiue, so we will make it equal to the highest ID number in the crm list and
// increment it by one
int CustomerIDNumber = HighestID + 1;
// Add new customer
Customer newCustomer = new Customer(CustomerIDNumber, title, firstName, lastName, Gender, DOB);
if (Crm.AddCustomer(newCustomer))
{
Console.Write("\nSuccessfully created new customer '{0} - {1} {2} {3}' and added to customer list",
CustomerIDNumber, title, firstName, lastName);
Crm.SaveToFile();
}
// If user presses any key, prompt the end of the menu
LastMRRCscreen(() => SubMenu("Customer"), () => NewCustomerSubmenu());
}
