/// <summary>
/// input/output for the process of displaying an customer's history with all
/// the validation taking place along the way and finally displaying
/// the history of the customer meeting the input parameters.
/// </summary>
public void DisplayCustomerHistory()
{
CustomerQueries checkCustomer = new CustomerQueries();
OrderCreation checkNum = new OrderCreation();
// get and display all the customer info to pick from
var customers = checkCustomer.GetCustomers();
Console.WriteLine("ID\tFirst Name\tLast Name\tUsername");
foreach (var c in customers)
{
Console.WriteLine($"{c.CustomerID}\t{c.FirstName}" +
$"\t\t{c.LastName}\t\t{c.UserName}");
}
Console.WriteLine("Please enter an ID from above for the customer you would like to see.");
int customerID;
do
{
string input = Console.ReadLine();
if (input == "cancel")
{
return;
}
// check if input is an int
while (!checkNum.IsValidNum(input))
{
Console.WriteLine("Invalid ID number, please enter another.");
input = Console.ReadLine();
if (input == "cancel")
{
return;
}
}
int id = checkNum.StringToInt(input);
// check to see if there is a customer with the given ID
if (checkCustomer.IsValidCustomerID(id))
{
customerID = id;
}
else
{
Console.WriteLine("There is no customer with this ID, please enter another.");
customerID = 0;
}
} while (customerID == 0); // repeat if no customer with that ID
var customerHistory = checkCustomer.GetCustomerHistory(customerID);
var customer = checkCustomer.GetCustomer(customerID);
// get and display the order history of that customer if they have one
if (customerHistory.Count() == 0)
{
Console.WriteLine($"As of now, {customer.FirstName} {customer.LastName} has placed no orders.");
}
else
{
Console.WriteLine($"Order history for {customer.FirstName} {customer.LastName}");
Console.WriteLine("Location\tOrder ID\tProduct\t\tQuantity\tTotal\t\tTimestamp");
foreach (var o in customerHistory)
{
double price = o.Product.Price * o.Quantity;
Console.WriteLine($"{o.Product.Store.Location}\t{o.OrderID}\t\t" +
$"{o.Product.ProductName}\t" +
$"{o.Quantity}\t\t${price}\t\t{o.Timestamp}");
}
}
Console.WriteLine("Press enter to return to the menu");
Console.ReadLine();
}