public static Respone <T> Borrow(T data, IBorrowable <T> item, IBorrower <T> client)
{
Respone <T> feedback = new Respone <T>();
// check if item can be borrowed and client can borrow it
if (!client.IsCanBorrow)
{
feedback.IsWorking = false;
feedback.Message = "Client can't borrow any item";
return(feedback);
}
if (!item.IsAvailable)
{
feedback.IsWorking = false;
feedback.Message = "The item is not available";
return(feedback);
}
if (!client.IsCanBorrowAt(data))
{
feedback.IsWorking = false;
feedback.Message = "Client can't borrow this item";
return(feedback);
}
// update borrowing-data
data.ItemDescription = item.ToString();
data.BorrowedSinse = DateTime.Now;
// try borrow
try
{
if (!item.BorrowMe(data))
{
feedback.IsWorking = false;
feedback.Message = "Failed";
return(feedback);
}
if (!client.BorrowAt(data))
{
feedback.IsWorking = false;
feedback.Message = "Failed";
item.ReturnMe(data);
return(feedback);
}
feedback.Data = data;
feedback.IsWorking = true;
feedback.Message = $"{item.ToString()}\nborrowed succesfully by\n{client.ToString()}";;
}
catch (Exception e)
{
feedback.IsWorking = false;
feedback.Message = e.Message;
}
return(feedback);
}
public static Respone <T> Return(T data, IBorrowable <T> item, IBorrower <T> client)
{
Respone <T> feedback = new Respone <T>();
try
{
if (!item.ReturnMe(data))
{
feedback.IsWorking = false;
feedback.Message = "Failed: invalid data";
return(feedback);
}
if (!client.ReturnAt(data))
{
item.BorrowMe(data);
feedback.IsWorking = false;
feedback.Message = "Failed: invalid data";
return(feedback);
}
feedback.IsWorking = true;
feedback.Message = $"{item.ToString()}\nreturned succesfully by\n{client.ToString()}";
}
catch (Exception e)
{
feedback.IsWorking = false;
feedback.Message = e.Message;
}
return(feedback);
}