/*
|----------------------------------------------------------------------
| Public Methods
|----------------------------------------------------------------------
*/
// Public method to Import the CSV
public bool ImportCSV(BeverageCollection beverages, string pathToCSVFile)
{
// Declare the streamreader
StreamReader streamReader = null;
// If it has already been imported
if (hasBeenImported)
{
return(false);
}
// Has not been imported yet, so do the import.
try
{
// Declare a string for the line
string line;
// Instantiate a new StreamReader class instance
streamReader = new StreamReader(pathToCSVFile);
// While still reading a line from the file
while ((line = streamReader.ReadLine()) != null)
{
// Process the line
this.processLine(line, beverages);
}
// Set hasBeenImported to true now that it is imported
hasBeenImported = true;
// Return true to represent success
return(true);
}
catch (Exception e)
{
// Output the Error that occured.
// This is the only output that is NOT
// being done in the UI class
Console.WriteLine(e.ToString());
Console.WriteLine();
Console.WriteLine(e.StackTrace);
// Return false to signify that it failed
return(false);
}
finally
{
// If the stream reader was instanciated,
// make sure it is closed before exiting.
if (streamReader != null)
{
streamReader.Close();
}
}
}
/*
|----------------------------------------------------------------------
| Private Methods
|----------------------------------------------------------------------
*/
private void processLine(string line, BeverageCollection beverageCollection)
{
// Declare array of parts that will contain the
// results of splitting the read in string.
string[] parts = line.Split(',');
// Assign each part to a variable
string id = parts[0];
string name = parts[1];
string pack = parts[2];
decimal price = decimal.Parse(parts[3]);
bool active = (parts[4] == "True");
// Add a new beverage into the collection with the properties
// of what was read in.
beverageCollection.AddNewItem(id, name, pack, price, active);
}
static void Main(string[] args)
{
// Set Console Window Size
Console.BufferHeight = Int16.MaxValue - 1;
Console.WindowHeight = 40;
Console.WindowWidth = 120;
// Set a constant for the size of the collection
const int beverageCollectionSize = 4000;
// Set a constant for the path to the CSV File
const string pathToCSVFile = "../../../../datafiles/beverage_list.csv";
// Create an instance of the UserInterface class
UserInterface userInterface = new UserInterface();
// Create an instance of the BeverageCollection class
BeverageCollection beverageCollection = new BeverageCollection(beverageCollectionSize);
// Create an instance of the CSVProcessor class
CSVProcessor csvProcessor = new CSVProcessor();
// Display the Welcome Message to the user
userInterface.DisplayWelcomeGreeting();
// Display the Menu and get the response. Store the response in the choice integer
// This is the 'primer' run of displaying and getting.
int choice = userInterface.DisplayMenuAndGetResponse();
// While the choice is not exit program
while (choice != 5)
{
switch (choice)
{
case 1:
// Load the CSV File
bool success = csvProcessor.ImportCSV(beverageCollection, pathToCSVFile);
if (success)
{
// Display Success Message
userInterface.DisplayImportSuccess();
}
else
{
// Display Fail Message
userInterface.DisplayImportError();
}
break;
case 2:
// Print Entire List Of Items
string allItemsString = beverageCollection.ToString();
if (!String.IsNullOrWhiteSpace(allItemsString))
{
// Display all of the items
userInterface.DisplayAllItems(allItemsString);
}
else
{
// Display error message for all items
userInterface.DisplayAllItemsError();
}
break;
case 3:
// Search For An Item
string searchQuery = userInterface.GetSearchQuery();
string itemInformation = beverageCollection.FindById(searchQuery);
if (itemInformation != null)
{
userInterface.DisplayItemFound(itemInformation);
}
else
{
userInterface.DisplayItemFoundError();
}
break;
case 4:
// Add A New Item To The List
string[] newItemInformation = userInterface.GetNewItemInformation();
if (beverageCollection.FindById(newItemInformation[0]) == null)
{
beverageCollection.AddNewItem(
newItemInformation[0],
newItemInformation[1],
newItemInformation[2],
decimal.Parse(newItemInformation[3]),
(newItemInformation[4] == "True")
);
userInterface.DisplayAddWineItemSuccess();
}
else
{
userInterface.DisplayItemAlreadyExistsError();
}
break;
}
// Get the new choice of what to do from the user
choice = userInterface.DisplayMenuAndGetResponse();
}
}
