public void ListStudentBook()
{
Console.WriteLine("ODUNC VERILENLER");
BaseObject current = StudentBooks == null ? null : StudentBooks.Head;
if (current == null)
{
Console.WriteLine("Henuz odunc verilen kitap yok.");
}
else
{
while (current != null)
{
StudentBook cur = (StudentBook)current;
if (cur.GiveDate == null)
{
Console.WriteLine("{0} - {1} - {2}", cur.ID, cur.Student.Name, cur.Book.Name);
}
current = current.Next;
}
Console.Write("\nDetaylar icin ID girin (menu icin 0): ");
BaseObject obj = StudentBooks.GetObject(Convert.ToInt32(Console.ReadLine()));
if (obj != null)
{
Console.WriteLine("");
StudentBookDetails((StudentBook)obj);
}
}
}
public void SearchLendedBook()
{
Console.WriteLine("ODUNC KITAP ARA");
Console.Write("Ogrenci numarasi: ");
int studentID = Convert.ToInt32(Console.ReadLine());
Console.Write("Kitap ID: ");
int bookID = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("");
BaseObject current = StudentBooks == null ? null : StudentBooks.Head;
while (current != null)
{
BaseObject student = Students.GetObject(studentID);
BaseObject book = Books.GetObject(bookID);
StudentBook cur = (StudentBook)current;
if (cur.Student == student && cur.Book == book)
{
break;
}
current = current.Next;
}
if (current == null)
{
Console.WriteLine("Aradiginiz islem bulunamadi!");
}
else
{
StudentBookDetails((StudentBook)current);
}
}
void TakeBackBook(StudentBook studentBook)
{
Console.WriteLine("IADE ETME");
double studentDept = CalculateDept(studentBook);
if (studentDept > 0)
{
Console.WriteLine("Iade icin {0} Krs. borc odenmesi gerekiyor.", studentDept);
}
Console.WriteLine("Onayliyor musunuz?");
Console.WriteLine("\t1. Evet");
Console.WriteLine("\t2. Hayir");
Console.Write("Seciminizi yapiniz (menu icin 0): ");
int choice = Convert.ToInt32(Console.ReadLine());
if (choice == 1)
{
studentBook.GiveDate = DateTime.Now;
studentBook.Student.bookCount--;
Console.WriteLine("Iade islemi basariyla gereceklesti.");
UpdateStudentBooks();
}
else
{
Console.WriteLine("Iade islemi iptal edildi.");
}
}
public double CalculateDept(StudentBook studentBook)
{
if (studentBook.GiveDate == null)
{
TimeSpan ts = DateTime.Now - studentBook.TakeDate.AddDays(15);
return((ts.Days - 15) * 0.5);
}
return(0);
}
void UpdateStudentBooks()
{
string[] lines = new string[StudentBooks.Count];
BaseObject current = StudentBooks == null ? null : StudentBooks.Head;
for (int i = 0; current != null; i++)
{
StudentBook studentBook = (StudentBook)current;
lines[i] = string.Format("{0} | {1} | {2} | {3} | {4}", studentBook.ID, studentBook.Student.ID, studentBook.Book.ID, studentBook.TakeDate, studentBook.GiveDate);
current = current.Next;
}
File.WriteAllLines("../../Datas/studentbook.txt", lines);
}
public void StudentBookDetails(StudentBook studentBook)
{
Console.WriteLine("ODUNC DETAYLARI");
Console.WriteLine("ID: " + studentBook.ID);
Console.WriteLine("Ogrenci adi: " + studentBook.Student.Name);
Console.WriteLine("Kitap adi: " + studentBook.Book.Name);
Console.WriteLine("Alindigi tarih: " + studentBook.TakeDate);
Console.WriteLine("Iade tarihi: " + studentBook.GiveDate);
Console.WriteLine("\nYapabileceginiz islemler: ");
Console.WriteLine("\t1. Kitap iade");
Console.WriteLine("\t2. Borc hesapla");
Console.WriteLine("\t3. Kitap detaylari");
Console.WriteLine("\t4. Ogrenci detaylari");
Console.WriteLine("\t5. Islemi sil");
Console.Write("Seciminizi yapiniz (menu icin 0): ");
int choice = Convert.ToInt32(Console.ReadLine());
switch (choice)
{
case 1:
TakeBackBook(studentBook);
break;
case 2:
double dept = CalculateDept(studentBook);
if (dept > 0)
{
Console.WriteLine("{0} Krs. borc hesaplandi", dept);
}
else
{
Console.WriteLine("Bu odunc verme isleminde borc bulunamadi");
}
break;
case 3:
BookDetails(studentBook.Book);
break;
case 4:
StudentDetails(studentBook.Student);
break;
case 5:
DeleteStudentBook(studentBook);
break;
}
}
public void DeleteStudentBook(StudentBook studentBook)
{
Console.WriteLine("ODUNC ISLEMI SIL");
Console.WriteLine("Bu islemi silmek istediginizden emin misiniz?");
Console.WriteLine("\t1. Evet, sil");
Console.WriteLine("\t2. Hayir, silme");
Console.Write("Seciminizi yapiniz (menu icin 0): ");
int choice = Convert.ToInt32(Console.ReadLine());
if (choice == 1)
{
StudentBooks.Delete(studentBook.ID);
Console.WriteLine("Odunc islemi basariyla silindi.");
UpdateStudentBooks();
}
else
{
Console.WriteLine("Odunc islemi silme iptal edildi.");
}
}
Student whoLendedBook(Book book)
{
BaseObject current = StudentBooks == null ? null : StudentBooks.Head;
while (current != null)
{
StudentBook cur = (StudentBook)current;
if (cur.Book.ID == book.ID)
{
if (cur.GiveDate == null)
{
return(cur.Student);
}
else
{
return(null);
}
}
current = current.Next;
}
return(null);
}
void LendBook(Book book)
{
Console.WriteLine("ODUNC VERME");
Student lendedStudent = whoLendedBook(book);
if (lendedStudent != null)
{
Console.WriteLine("Bu kitap suan '{0}' adli ogrencide.", lendedStudent.Name);
}
else
{
Console.Write("Ogrenci numarasi: ");
Student student = (Student)Students.GetObject(Convert.ToInt32(Console.ReadLine()));
if (student != null)
{
if (student.bookCount == 3)
{
Console.WriteLine("Bir ogrenci en fazla 3 kitap alabilir!");
}
else
{
StudentBook newStudentBook = new StudentBook();
newStudentBook.Book = book;
newStudentBook.Student = student;
newStudentBook.TakeDate = DateTime.Now;
newStudentBook.GiveDate = null;
student.bookCount++;
StudentBooks.Add(newStudentBook);
Console.WriteLine("Kitap basariyla odunc verildi.");
UpdateStudentBooks();
}
}
else
{
Console.WriteLine("Bu numaraya ait ogrenci bulunmuyor!");
}
}
}
public void ListStudentBook(Book book)
{
Console.WriteLine("'{0}' ALAN OGRENCILER", book.Name);
BaseObject current = StudentBooks.Head;
while (current != null)
{
StudentBook cur = (StudentBook)current;
if (cur.Book == book)
{
Console.WriteLine("{0} - {1} [{2}]", cur.ID, cur.Student.Name, cur.GiveDate == null ? "ogrencide" : "iade edildi");
}
current = current.Next;
}
Console.Write("\nDetaylar icin ID girin (menu icin 0): ");
BaseObject obj = StudentBooks.GetObject(Convert.ToInt32(Console.ReadLine()));
if (obj != null)
{
Console.WriteLine("");
StudentBookDetails((StudentBook)obj);
}
}
public void ListDept()
{
Console.WriteLine("BORCLULAR");
BaseObject current = StudentBooks == null ? null : StudentBooks.Head;
int i = 0;
while (current != null)
{
StudentBook cur = (StudentBook)current;
if (cur.GiveDate == null)
{
TimeSpan ts = DateTime.Now - cur.TakeDate.AddDays(15);
if (ts.Days >= 15)
{
Console.WriteLine("{0} - {1} - {2}", ++i, cur.Student.Name, (ts.Days - 15) * 0.5 + " Krs.");
}
}
current = current.Next;
}
if (i == 0)
{
Console.WriteLine("Henuz borclu ogrenci yok.");
}
}
