public ActionResult Transaction(BorrowEntry entry,string operation)
{
ModelState.Remove("BookID");
//Memorized UserID and BookID data for return to page.
TempData["UserID"] = (entry.UserID == 0)?"":entry.UserID.ToString();
TempData["BookID"] = (entry.BookID == 0)?null:entry.BookID.ToString();
if (ModelState.IsValid)
{
if (operation == "Check")
{
return View(Check(entry));
}
else if (operation == "Submit")
{
return View(Borrow(entry));
}
else if (operation == "Return")
{
return View(Return(entry));
}
else
{
TempData["ErrorNoti"] = "Invalid operation.";
return View();
}
}
else
{
TempData["ErrorNoti"] = "Please enter Member ID";
return View();
}
}
public ActionResult Renew(BorrowEntry entry)
{
if (ModelState.IsValid)
{
int id = entry.ID;
ActionResult result = RenewStrategy(ref id);
if ((result as ViewResult) != null)
{
BorrowEntry entryToRenew = (result as ViewResult).Model as BorrowEntry;
if (libRepo.RequestEntryRepo.Find(entryToRenew.BookID) != null)
{
TempData["ErrorNoti"] = "This book is ON HOLD.";
}
else
{
entryToRenew.DueDate = DateTime.Now.Date.AddDays(7);
entryToRenew.RenewCount++;
libRepo.BorrowEntryRepo.Update(entryToRenew);
libRepo.Save();
TempData["SuccessNoti"] = "Renew successful!";
}
}
else
return result;
}
return RedirectToAction("Index");
}
/* [Private] MemberTransactionViewer Check(BorrowEntry entry)
* This method will get related borrow entry and request entry of desired user
* then parameterized it to MemberTransactionViewer to return as result.
* If user input incorrect UserID notify user that "No member that id's exists."
*/
private MemberTransactionViewer Check(BorrowEntry entry)
{
Member m;
if ((m = libRepo.MemberRepo.Find(entry.UserID)) == null)
{
TempData["ErrorNoti"] = "No member that id's exists.";
return null;
}
MemberTransactionViewer viewer = new MemberTransactionViewer();
viewer.SetBorrowEntryViews(libRepo.BorrowEntryRepo.ListWhere(targetEntry => targetEntry.UserID == entry.UserID
&& targetEntry.ReturnDate == null));
viewer.SetRequestEntryViews(libRepo.RequestEntryRepo.ListWhere(targetentry => targetentry.UserID == entry.UserID));
viewer.Name = m.Name;
return viewer;
}
/* [Private] MemberTransactionViewer Return(BorrowEntry entry)
* first of all check that desired entry is exist or not base on entry's id,
* next is check that whether return date is null or not(to detect whether this entry has passed entry),
* continued by check that there is exist request that related to return book
* if it is exists change book status to Reserved and update expire date then save it to database
* if it is not exists change book status to Available and set return date then save it to database.
* Moreover check that due date is more that presennt date or not,
* if not it mean that user is return an overdue borrow book,just calculate fine with number of day that passed
* in linear rate base on static fine configuration class.Finally return result to user.
* Finally call "check" method or set return value to null to return and update borrow/return list for desired user.
*/
private MemberTransactionViewer Return(BorrowEntry entry)
{
//check that desired entry is exist or not base on entry's id.
BorrowEntry returnentry = libRepo.BorrowEntryRepo.Find(entry.ID);
if (returnentry == null)
{
TempData["ErrorNoti"] = "No borrow record found to do return.";
return null;
}
//check that whether return date is null or not(to detect whether this entry has passed entry)
else if (returnentry.ReturnDate != null)
{
TempData["ErrorNoti"] = "This book is already returned.";
return Check(returnentry);
}
/* check that there is exist request that related to return book
* if it is exists change book status to Reserved and update expire date then save it to database
* if it is not exists change book status to Available and set return date then save it to database
*/
else
{
RequestEntry reqToCheck = returnentry.GetBorrowBook(ref libRepo).GetRelatedRequestEntry(ref libRepo);
if (reqToCheck != null)
{
Book bookToUpdate = returnentry.GetBorrowBook(ref libRepo);
bookToUpdate.BookStatus = Status.Reserved;
reqToCheck.ExpireDate = DateTime.Now.Date.AddDays(3);
libRepo.BookRepo.Update(bookToUpdate);
libRepo.RequestEntryRepo.Update(reqToCheck);
}
else
{
Book bookToUpdate = returnentry.GetBorrowBook(ref libRepo);
bookToUpdate.BookStatus = Status.Available;
libRepo.BookRepo.Update(bookToUpdate);
}
/* check that due date is more that presennt date or not,
* if not it mean that user is return an overdue borrow book,
* just calculate fine with number of day that passed
* in linear rate base on static fine configuration class.
*/
if(returnentry.DueDate.Date < DateTime.Now.Date){
int dif = DateTime.Now.Subtract(returnentry.DueDate.Date).Days;
TempData["WarnNoti"] = "Return successfully.Fine " + (dif * ConfigurationController.getFine()) + " baht.";
}
else
TempData["SuccessNoti"] = "Return successfully.";
returnentry.ReturnDate = DateTime.Now.Date;
libRepo.BorrowEntryRepo.Update(returnentry);
libRepo.Save();
return Check(returnentry);
}
}
/* [Private] MemberTransactionViewer Borrow(BorrowEntry entry)
* This method will do borrow book operation,
* first of all check that current user is exists then check current borrow book for desired
* user whether is equal 3 or not,next is check that desired borrow book is exists,continue by
* check book status... ,if it is Available do borrow normally(set borrow entry data and change
* book's status to borrowed and return success result.)
* if it is Lost or Borrowed notify user that book status is XXXX where XXXX is Lost or Borrowed,
* if it is reserved check that whether request is expired or not if yes delete expired req. and do borrow like normal case
* if no;next check is current user that want to borrow book is same as in requestentry...
* if yes remove request entry and do borrow like normal case if not notify user that no permission to borrow
* other request book.
* then parameterized it to MemberTransactionViewer to return as result.
* If user input incorrect UserID notify user that "No member that id's exists."
* Finally call "check" method or set return value to null to return and update borrow/return list for desired user.
*/
private MemberTransactionViewer Borrow(BorrowEntry entry)
{
//Check that current user is exists.
if (libRepo.MemberRepo.Find(entry.UserID) == null)
{
TempData["ErrorNoti"] = "No member that id's exists.";
return null;
}
//Check current borrow book for desired user whether is equal 3 or not.
if (libRepo.BorrowEntryRepo.ListWhere(target => target.UserID == entry.UserID
&& target.ReturnDate == null).ToList().Count == 3)
{
TempData["ErrorNoti"] = "This member borrow exceed maximum allowed.";
return Check(entry);
}
//Check that desired borrow book is exists.
Book booktoborrow = libRepo.BookRepo.Find(entry.BookID);
if (booktoborrow == null)
{
TempData["ErrorNoti"] = "No book was found in database.";
return Check(entry);
}
/*check book status... ,if it is Available do borrow normally(set borrow entry data and change
* book's status to borrowed and return success result.)
*/
else if (booktoborrow.BookStatus == Status.Available)
{
entry.BorrowDate = DateTime.Now.Date;
entry.DueDate = DateTime.Now.Date.AddDays(7);
booktoborrow.BookStatus = Status.Borrowed;
libRepo.BookRepo.Update(booktoborrow);
libRepo.BorrowEntryRepo.Add(entry);
libRepo.Save();
TempData["SuccessNoti"] = "Borrow for member#"+entry.UserID+" success.";
return Check(entry);
}
//If book status is lost,notify user that this book is lost.
else if (booktoborrow.BookStatus == Status.Lost)
{
TempData["ErrorNoti"] = "This book is lost.";
return Check(entry);
}
else if (booktoborrow.BookStatus == Status.Reserved)
{
/* if book status is reserved check that whether request is expired or not
* if yes delete expired req. and do borrow like normal case.
*/
RequestEntry reqentry = booktoborrow.GetRelatedRequestEntry(ref libRepo);
if (reqentry.ExpireDate.Value.Date < DateTime.Now.Date)
{
libRepo.RequestEntryRepo.Remove(reqentry);
booktoborrow.BookStatus = Status.Borrowed;
libRepo.BookRepo.Update(booktoborrow);
entry.BorrowDate = DateTime.Now.Date;
entry.DueDate = DateTime.Now.Date.AddDays(7);
libRepo.BorrowEntryRepo.Add(entry);
libRepo.Save();
TempData["SuccessNoti"] = "Delete expire req.//OK.";
return Check(entry);
}
/* check is current user that want to borrow book is same as in requestentry...
* if yes remove request entry and do borrow like normal case if not notify user
* that no permission to borrow other request book.
*/
else if (reqentry.UserID != entry.UserID)
{
TempData["ErrorNoti"] = "This user has no permission to borrow the requested book by others.";
return Check(entry);
}
else
{
libRepo.RequestEntryRepo.Remove(reqentry);
booktoborrow.BookStatus = Status.Borrowed;
entry.BorrowDate = DateTime.Now.Date;
entry.DueDate = DateTime.Now.Date.AddDays(7);
libRepo.BookRepo.Update(booktoborrow);
libRepo.BorrowEntryRepo.Add(entry);
libRepo.Save();
TempData["SuccessNoti"] = "User accept reserved book//OK";
return Check(entry);
}
}
//If book status is borrowed,notify user that this book is already borrowed.
else
{
TempData["ErrorNoti"] = "This book is already borrowed.";
return Check(entry);
}
}