/// <summary>
/// Returns a list of strings to display information about overdue books and their cardholders.
/// </summary>
/// <returns></returns>
public List <string> GetOverdueBookInformation()
{
List <CheckOutLogBLL> overdues = logs.GetOverdueLogs();
List <string> outputList = new List <string>();
if (overdues.Count == 0)
{
outputList.Add("There are no records of overdue books.");
}
else
{
//I have logs, now I need book and cardholder
overdues.Sort();
foreach (CheckOutLogBLL l in overdues)
{
BookBLL book = (from b in books
where b.BookID == l.BookID
select b).FirstOrDefault();
CardholderBLL cardholder = (CardholderBLL)(from c in people
where c is CardholderBLL
where c.ID == l.CardholderID
select c).FirstOrDefault();
//Build the string and add it to the listBox
string o = $"{book.ToString()} {l.ToString()} Cardholder: {cardholder.ToString()} ";
outputList.Add(o);
}
}
return(outputList);
}
public BookUpdater(BookBLLCollection Books, PersonBLLCollection People, CheckOutLogBLLCollection Logs, BookBLL targetBook)
{
books = Books;
people = People;
logs = Logs;
Book = targetBook;
GetNames();
}
public BookBuilder(BookBLLCollection Books, PersonBLLCollection People, string ISBN)
{
books = Books;
people = People;
iSBN = ISBN;
Book = new BookBLL()
{
ISBN = iSBN
};
}
/// <summary>
/// Searches the book collection for a book with an ISBN that matches the entered string.
/// </summary>
public void ISBNSearch()
{
FoundBooks = new List <BookBLL>();
BookBLL book = (from b in books
where b.ISBN == QueryTerms
select b).FirstOrDefault();
if (book != null)
{
FoundBooks.Add(book);
}
}
/// <summary>
/// When given a specific book will return how many copies have not been checked out yet.
/// </summary>
/// <param name="book"></param>
/// <returns></returns>
public int AvailableCopies(BookBLL book)
{
int availableCopies = book.NumberOfCopies;
foreach (CheckOutLogBLL l in logs)
{
if (l.BookID == book.BookID)
{
availableCopies--;
}
}
return(availableCopies);
}
/// <summary>
/// Takes each book and creates a list of strings from the fields to be searched for.
/// </summary>
/// <param name="b"></param>
/// <returns></returns>
List <string> ConcatenateBookFields(BookBLL b)
{
List <string> concatenatedFields = new List <string>();
concatenatedFields.Add(b.Title);
if (b.Subject != null)
{
concatenatedFields.Add(b.Subject);
}
PersonBLL author = (from a in people
where a.ID == b.AuthorID
select a).FirstOrDefault();
concatenatedFields.Add(author.FirstName);
concatenatedFields.Add(author.LastName);
return(concatenatedFields);
}
/// <summary>
/// Returns a list of formatted string to display cardholder information and checked out books.
/// </summary>
/// <returns></returns>
public List <string> GetCardholderInformation()
{
List <CardholderBLL> cardholders = new List <CardholderBLL>();
List <string> stringArray = new List <string>();
foreach (PersonBLL p in people)
{
if (p is CardholderBLL c)
{
string output = c.ToString();
//get checkoutlogs that match the cardholder
List <CheckOutLogBLL> cardholdersLogs = logs.GetCheckOutLogBLLs(c.ID);
if (cardholdersLogs.Count > 0)
{
output += " Checked Out: ";
List <BookBLL> borrowedBooks = new List <BookBLL>();
foreach (CheckOutLogBLL l in cardholdersLogs)
{
BookBLL book = (from b in books
where b.BookID == l.BookID
select b).FirstOrDefault();
borrowedBooks.Add(book);
foreach (BookBLL b in borrowedBooks)
{
output += b.ToString() + $", Date Checked: {l.CheckOutDate}";
if (l.IsOverDue())
{
output += " OVERDUE";
}
}
}
}
stringArray.Add(output);
}
}
return(stringArray);
}
public BookUpdater(BookBLLCollection Books, PersonBLLCollection People, CheckOutLogBLLCollection Logs, BookBLL targetBook, bool remove) : this(Books, People, Logs, targetBook)
{
RemoveCopies = remove;
}