protected void next_ServerClick(object sender, EventArgs e)
{
user u = new user();
u.user_id = (int)Session["id"];
u = os.getUserById(u);
int seat_num = (int)Session["seat_num"];
o.SSR = this.SSR.Value ;
o.type = type;
FlightService fs = new FlightService();
String plane_type_name = searchF.plane.plane_type.name;
BitArray seat = new BitArray(20);
seat.SetAll(false);
seat.Set(seat_num,true);
o.seat = OrderService.BitArrayToByteArray(seat);
if ( (o = os.generate(u, searchF, o, seat_num)) != null)
{
Session["new_order"] = o;
Server.Transfer("payment.aspx");
}
else
{
ShowPopUpMsg("Seat is book by others!");
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (Session["id"] == null)
{
var response = base.Response;
response.Redirect("login.aspx");
}
searchF = (flight)Session["searchFlight"];
type = (String)Session["type"];
seat_num = (int)Session["seat_num"];
oInDb = (order)Session["new_order"];
if (oInDb == null) return;
user u = new user();
u.user_id = (int)Session["id"];
u = os.getUserById(u);
oInDb.user = u;
flight f = new flight();
f.flight_id = oInDb.flight_id;
f= new FlightService().getFlightById(f);
oInDb.flight = f;
this.flight_date.Value = oInDb.flight.arrival_date.ToString("d");
this.flight_name.Value = oInDb.flight.flight_name;
this.city_from.Value = searchF.air_line.city_from;
this.city_to.Value = searchF.air_line.city_to;
this.user_name.Value = oInDb.user.user_name;
this.price.Value = oInDb.payment.ToString();
this.user_balance.Value = oInDb.user.balance.ToString();
Session["new_order"] = oInDb;
}
public order cancel(user u , order o)
{
//更新积分 , 退款 , 退里程
mutex.WaitOne();
using (var context = orderDAO.getContext())
{
using (var dbContextTransaction = context.Database.BeginTransaction())
{
try
{
BitArray seat = new BitArray(o.seat);
int seat_num = 0;
for(int i = 0 ; i < seat.Length ; i++) {
if(seat.Get(i) == true)
seat_num = i;
}
flight fInDB = getFlightById(o.flight_id);
fInDB = setSeat(fInDB,o,seat_num,false);
u.balance += o.payment;
u.mileage -= o.flight.air_line.mile;
u.credit -= (int)o.payment;
if (u.mileage < 10000) u.user_level = 0;
o.status = "cancel";
userDAO.Update(u);
o = orderDAO.Update(o);
flightDAO.Update(fInDB);
context.SaveChanges();
dbContextTransaction.Commit();
}
catch (Exception)
{
dbContextTransaction.Rollback();
}
}
}
mutex.ReleaseMutex();
return o;
}
private static flight setSeat(flight f, order o, int seat_num , bool value)
{
BitArray deluxe = new BitArray(f.available_deluxe_seats);
BitArray business = new BitArray(f.available_business_seats);
BitArray economy = new BitArray(f.available_economy_seats);
switch (o.type)
{
case "deluxe":
//seat with seatNum is set to 1 if it is available
deluxe.Set(seat_num, value);
f.available_deluxe_seats = BitArrayToByteArray(deluxe);
o.payment = f.deluxe_fee * f.discount;
break;
case "business":
business.Set(seat_num, value);
f.available_business_seats = BitArrayToByteArray(business);
o.payment = f.business_fee * f.discount;
break;
case "economy":
economy.Set(seat_num, value);
f.available_economy_seats = BitArrayToByteArray(economy);
o.payment = f.econmy_fee * f.discount;
break;
}
return f;
}
private static bool hasSeat(flight f, order o , int seat_num)
{
BitArray deluxe = new BitArray(f.available_deluxe_seats);
BitArray business = new BitArray(f.available_business_seats);
BitArray economy = new BitArray(f.available_economy_seats);
BitArray order_seat = new BitArray(o.seat);
bool hasSeat = false;
switch (o.type)
{
case "deluxe":
//seat with seatNum is set to 1 if it is available
if (deluxe.Get(seat_num) == true) hasSeat = true;
break;
case "business":
if (business.Get(seat_num) == true) hasSeat = true;
break;
case "economy":
if (economy.Get(seat_num) == true) hasSeat = true;
break;
}
return hasSeat;
}
public bool pay(user u ,order o)
{
bool paid = false ;
using (var userContext = userDAO.getContext())
{
using (var context = orderDAO.getContext())
{
using (var dbContextTransaction = context.Database.BeginTransaction())
{
try
{
if (u.balance <= o.payment)
{
throw new Exception();
}
u.balance -= o.payment;
u.mileage += o.flight.air_line.mile;
u.credit += (int)o.payment;
if (u.mileage > 10000) u.user_level = 1;
o.status = "paid";
userDAO.Update(u);
orderDAO.Update(o);
dbContextTransaction.Commit();
paid = true;
}
catch (Exception)
{
dbContextTransaction.Rollback();
}
context.SaveChanges();
}
userContext.SaveChanges();
}
}
return paid;
}
public order generate(user u, flight f, order o ,int seat_num)
{
o.flight_id = f.flight_id;
u = this.getUserById(u);
//o.user = u;
o.user_id = u.user_id;
o.status = "paid";
o.PNR = CalculateMD5Hash(u.user_name + seat_num + f.flight_id + DateTime.Now.Date) ;
mutex.WaitOne();
if (hasSeat(f, o))
{
using (var context = orderDAO.getContext())
{
using (var dbContextTransaction = context.Database.BeginTransaction())
{
try
{
flight fInDB = getFlightById(f.flight_id);
//o.flight = fInDB;
if (fInDB == null) throw new Exception() ;
bool buy = true;
flight newF = setSeat(fInDB,o,seat_num,buy);
flightDAO.Update(newF);
if (u.user_level == 1) o.payment = o.payment * (decimal)0.95;
o = orderDAO.Insert(o);
context.SaveChanges();
dbContextTransaction.Commit();
}
catch (Exception)
{
dbContextTransaction.Rollback();
}
}
}
}
mutex.ReleaseMutex();
//
return o;
}
