static void Main(string[] args)
{
XLibDocument document = new XLibDocument();
document.Open("");
Console.WriteLine("Standard file opened");
UIHelpers.Flow(document);
}
public static void Flow(XLibDocument document)
{
document = (document == null) ? new XLibDocument() : document;
while (true)
{
Console.WriteLine("What to do next? ( 0 - open file, 1 - search, 2 - save" +
" 3 - show all, 4 - add, 5 - remove, 6 - exit)");
string variant = Console.ReadLine();
Console.Clear();
switch (variant)
{
case "0":
Console.WriteLine("Enter path:");
document.Open(Console.ReadLine(), prevIfFail: true);
break;
case "1":
UIHelpers.Searching(document);
break;
case "2":
Console.WriteLine("Enter filename and path");
document.Save(Console.ReadLine());
break;
case "3":
try
{
UIHelpers.ShowResults(document.Books);
} catch (ArgumentException)
{
document = new XLibDocument();
Console.WriteLine("Current document flushed");
}
break;
case "4":
document = UIHelpers.AddBook(document);
Console.WriteLine("Added");
break;
case "5":
Console.WriteLine("Find which books to remove");
document.RemoveBooks(UIHelpers.Searching(document));
Console.WriteLine("Removed successfully");
break;
case "6":
return;
default:
Console.WriteLine("Wrong input - please open a number from 0 to 4 or 5 to exit");
break;
}
}
}
public IEnumerable <XElement> Filter(string by, string value)
{
IEnumerable <XElement> collection = null;
if (document != null)
{
collection = document.Root.Descendants("book");
}
return(XLibDocument.Filter(collection, by, value));
}
public static IEnumerable <XElement> Searching(XLibDocument document)
{
IEnumerable <XElement> elements = null;
while (true)
{
if (elements != null)
{
Console.WriteLine("Enter f to filter results, or e to exit");
var control = Console.ReadLine().Trim().ToLower();
switch (control)
{
case "e":
return(elements);
case "f":
break;
default:
continue;
}
Console.WriteLine("What do you want to filter by? (author, tiltle, price)");
}
else
{
Console.WriteLine("What do you want to search by? (author, tiltle, price)");
}
string by = Console.ReadLine();
Console.WriteLine("What should the {0} be?", by);
string value = Console.ReadLine();
if (elements == null)
{
elements = document.Filter(by, value);
}
else
{
elements = XLibDocument.Filter(elements, by, value);
}
ShowResults(elements);
}
}
public static XLibDocument AddBook(XLibDocument document)
{
Console.WriteLine("Enter authors name");
string author = Console.ReadLine();
Console.WriteLine("Enter book title:");
string title = Console.ReadLine();
Console.WriteLine("Enter book description:");
string desc = Console.ReadLine();
int price = 0;
string sPrice = "";
do
{
Console.WriteLine("Enter book price:");
sPrice = Console.ReadLine();
} while (!int.TryParse(sPrice, out price));
document.AddBook(title, author, desc, price);
return(document);
}