public static void DivideDrinkListIntoPages(List <Drink> contemporaryList)
{
int page = 0;
int index = 0;
int counter = 0;
while (index < contemporaryList.Count)
{
counter++;
if (counter % 10 == 0)
{
page = MoveThroughPagesOrCheckDrinkInfo(contemporaryList, page);
counter = 0;
}
else
{
SearchDrinkConsoleUi.PrintDrinksOnPage(contemporaryList, counter, index);
}
index = counter + page * 9;
if (index == contemporaryList.Count)
{
page = MoveThroughPagesOrCheckDrinkInfo(contemporaryList, page);
counter = 0;
index = counter + page * 9;
}
if (page < 0)
{
return;
}
}
}
public static int MoveThroughPagesOrCheckDrinkInfo(List <Drink> contemporaryList, int page)
{
do
{
SearchDrinkConsoleUi.PrintInstructionWhileOnPagedList(contemporaryList, page);
var choice = Console.ReadKey();
Console.Clear();
// Moves to drink info if user press 1 - 9
if (char.IsDigit(choice.KeyChar))
{
if (choice.KeyChar != '0')
{
// select the drink form the list
var drink = contemporaryList[page * 9 + int.Parse(choice.KeyChar.ToString()) - 1];
Console.WriteLine();
if (TryToWriteDrinkInfo(drink) == false)
{
return(-1);
}
SearchDrinkConsoleUi.DisplayProductDetailsOptions(drink);
SearchDrinkConsoleUi.ReWriteDrinkListOnConsole(contemporaryList, page, choice);
}
//Cleans and rewrites list if user picked 0
SearchDrinkConsoleUi.ReWriteDrinkListOnConsole(contemporaryList, page, choice);
}
//If user picked N for Next Page, page is increased
else if (choice.Key == ConsoleKey.N)
{
if (CheckIfUserCanGoToNextPage(contemporaryList, page, choice))
{
page++;
return(page);
}
}
//If user picked P for Previous Page, page is decreased
else if (choice.Key == ConsoleKey.P)
{
if (CheckIfUserCanGoBackToPreviousPage(contemporaryList, page, choice))
{
page--;
return(page);
}
}
//Exits to main menu
else if (choice.Key == ConsoleKey.Escape)
{
return(-1);
}
//Rewrites drink list to console if user gives unsupported input
else
{
SearchDrinkConsoleUi.ReWriteDrinkListOnConsole(contemporaryList, page, choice);
}
}while (true);
}
public static bool CheckIfUserCanGoBackToPreviousPage(List <Drink> contemporaryList, int page, ConsoleKeyInfo choice)
{
if (page == 0)
{
SearchDrinkConsoleUi.ReWriteDrinkListOnConsole(contemporaryList, page, choice);
SearchDrinkConsoleUi.TellUserThatHeCanNotGoBack(contemporaryList, page);
return(false);
}
return(true);
}
public static bool CheckIfUserCanGoToNextPage(List <Drink> contemporaryList, int page, ConsoleKeyInfo choice)
{
if (page * 9 + 9 > contemporaryList.Count)
{
SearchDrinkConsoleUi.ReWriteDrinkListOnConsole(contemporaryList, page, choice);
SearchDrinkConsoleUi.TellUserThatHeCanNotGoToNextPage(page);
return(false);
}
return(true);
}
private static void Main()
{
// initial loading drinks list from file
var loader = new DrinkLoader();
var drinksListGlobal = loader.InitializeDrinksFromFile();
var exitProgram = false;
do
{
var menu = new Menu();
menu.Show();
var choice = menu.GetUserChoice();
switch (choice)
{
case MenuChoice.FindByName:
SearchDrinkConsoleUi.StartSearch(drinksListGlobal, SearchCriterion.Name);
break;
case MenuChoice.FindByAlcoholContent:
SearchDrinkConsoleUi.HandleSearchDrinksByContentInConsole(drinksListGlobal);
break;
case MenuChoice.FindByIngredient:
SearchDrinkConsoleUi.StartSearch(drinksListGlobal, SearchCriterion.Ingredients);
break;
case MenuChoice.ShowReviewedDrinksList:
SearchDrinkConsoleUi.ShowReviewedDrinksHandler(drinksListGlobal);
break;
case MenuChoice.AddCustomDrink:
SearchDrinkConsoleUi.StartCustomDrinkCreation(drinksListGlobal);
break;
case MenuChoice.UpdateDrinksFromFile:
SearchDrinkConsoleUi.AddMoreDrinksFromFile(drinksListGlobal);
break;
case MenuChoice.DisplayFavourites:
FavouritesService.Display();
break;
case MenuChoice.Exit:
exitProgram = true;
break;
default:
throw new ArgumentOutOfRangeException();
}
} while (exitProgram == false);
}
public static bool TryToWriteDrinkInfo(Drink drink)
{
try
{
SearchDrinkConsoleUi.WriteDrinkInfo(drink);
}
catch (ArgumentOutOfRangeException)
{
SearchDrinkConsoleUi.WriteExceptionCaughtInfo();
return(false);
}
return(true);
}
