public BookEventResponse BookEvent(long hostId, BookEventRequest value, out string status)
{
BookEventResponse result = null;
//Validate if customer exist
CustomerServices customerServices = new CustomerServices();
var customer = customerServices.GetCustomerByRef(hostId, value.CustomerReferenceId);
if (customer == null)
{
status = BookEventStatuses.CustomerNotFound;
return(null);
}
//Validate if event and tier exist
EventsServices eventsServices = new EventsServices();
EventInfo eventInfo = eventsServices.GetEventByRef(hostId, value.EventReferenceId);
if (eventInfo == null)
{
status = BookEventStatuses.EventNotFound;
return(null);
}
List <EventTierInfo> eventTiers = eventsServices.GetEventTiersByEventId(eventInfo.EventId.Value);
if (eventTiers == null && eventTiers.Count == 0)
{
status = BookEventStatuses.EventNotFound;
return(null);
}
//Validate event status
if (eventInfo.Status != "Active")
{
status = BookEventStatuses.EventNotActive;
return(null);
}
//Validate if event has already started
if (DateTime.UtcNow >= eventInfo.StartDate)
{
status = BookEventStatuses.EventHasAlreadyStarted;
return(null);
}
//Validate if all requested tiers exist
List <string> allAvailableEventTiers = eventTiers.Select(x => x.ReferenceId).ToList();
List <string> requestedEventTiers = value.Tickets.Select(x => x.EventTierReferenceId).ToList();
bool contained = !requestedEventTiers.Except(allAvailableEventTiers).Any();
if (!contained)
{
status = BookEventStatuses.TierNotFound;
return(null);
}
//Validate requested ticket quantities (must be more than zero)
if (value.Tickets.Where(x => x.Quantity < 1).Count() > 0)
{
status = BookEventStatuses.InvalidTicketQuantity;
return(null);
}
//Validate if tickets are still available for the requested quantities
foreach (var ticket in value.Tickets)
{
var tier = eventTiers.Where(x => x.ReferenceId == ticket.EventTierReferenceId).ToList()[0];
if (tier.AvailableTickets < ticket.Quantity)
{
status = BookEventStatuses.InsufficientTickets;
return(null);
}
}
//Calculate total cost
decimal totalCost = 0;
foreach (var ticket in value.Tickets)
{
var tier = eventTiers.Where(x => x.ReferenceId == ticket.EventTierReferenceId).ToList()[0];
totalCost += (ticket.Quantity * tier.Price.Value);
}
//Check customer wallet balance
if (customer.WalletBalance < totalCost)
{
status = BookEventStatuses.CustomerInsufficientFunds;
return(null);
}
//TODO: Transaction lock for thread safety
string bookingConfirmation = null;
string ticketNumber = null;
string ticketUniqueId = null;
List <KeyValuePair <long, string> > tierTicketNumbers = new List <KeyValuePair <long, string> >();
//Insert customer booking
bookingConfirmation = GenerateBookingConfirmation(hostId);
long bookingId = InsertUserBooking(customer.CustomerId.Value, eventInfo.EventId.Value, bookingConfirmation);
//Perform transaction
WalletServices walletService = new WalletServices();
walletService.Transfer(customer.WalletAddress, eventInfo.WalletAddress, totalCost, bookingId, "Booking");
//Insert customer tickets
foreach (var ticketPurchase in value.Tickets)
{
var tier = eventTiers.Where(x => x.ReferenceId == ticketPurchase.EventTierReferenceId).ToList()[0];
for (int i = 0; i < ticketPurchase.Quantity; i++)
{
ticketNumber = GenerateTicketNumber(eventInfo.EventId.Value);
ticketUniqueId = HashUtility.GenerateHash();
InsertUserTicket(customer.CustomerId.Value, bookingId, eventInfo.EventId.Value, tier.TierId.Value, ticketNumber, tier.Price.Value, "Active", ticketUniqueId);
tierTicketNumbers.Add(new KeyValuePair <long, string>(tier.TierId.Value, ticketNumber));
}
}
//Update tickets availability
foreach (var ticket in value.Tickets)
{
var tier = eventTiers.Where(x => x.ReferenceId == ticket.EventTierReferenceId).ToList()[0];
UpdateAvailableTickets(tier.TierId.Value, tier.AvailableTickets.Value - ticket.Quantity);
}
//Commit to blockchain
ContractApi blockchainContract = new ContractApi();
for (int i = 0; i < value.Tickets.Count; i++)
{
var ticket = value.Tickets[i];
var tier = eventTiers
.Where(x => x.ReferenceId == ticket.EventTierReferenceId).ToList()[0];
List <string> ticketNumbers = tierTicketNumbers
.Where(x => x.Key == tier.TierId.Value)
.Select(x => x.Value).ToList();
// Update: Use BookEventV2 method on smart contract
//blockchainContract.BookEvent(customer.CustomerAddress, eventInfo.EventUniqueId, tier.TierUniqueId, ticketNumbers);
foreach (string number in ticketNumbers)
{
blockchainContract.BookEventV2(customer.CustomerAddress, eventInfo.EventUniqueId, tier.TierUniqueId, number);
}
}
result = new BookEventResponse();
result.ConfirmationNumber = bookingConfirmation;
result.TicketNumbers = tierTicketNumbers.Select(x => x.Value).ToList();
status = BookEventStatuses.Success;
return(result);
}
//TODO: performance optimize this method to cancel tickets in bulk
public CancelTicketResponse CancelAndRefundTicket(long hostId, long ticketId, out string status)
{
CancelTicketResponse result = null;
AdmissionServices admissionServices = new AdmissionServices();
//Get ticket info
var ticket = admissionServices.GetTicketById(ticketId);
if (ticket == null)
{
status = CancelTicketStatuses.TicketNotFound;
return(null);
}
if (ticket.Status == TicketStatuses.Used)
{
status = CancelTicketStatuses.TicketAlreadyUsed;
return(null);
}
if (ticket.Status == TicketStatuses.Cancelled)
{
status = CancelTicketStatuses.TicketAlreadyCancelled;
return(null);
}
//Get event info
var eventInfo = GetEventByRef(hostId, ticket.EventReferenceId);
if (eventInfo == null)
{
status = CancelTicketStatuses.EventNotFound;
return(null);
}
//Validate event status
if (eventInfo.Status != EventStatuses.Active)
{
status = CancelTicketStatuses.EventNotActive;
return(null);
}
//Validate if event start date is over
if (DateTime.UtcNow >= eventInfo.StartDate)
{
status = CancelTicketStatuses.EventHasAlreadyStarted;
return(null);
}
//Get event tier
EventsServices eventsServices = new EventsServices();
var eventTier = eventsServices.GetEventTiersByRef(hostId, ticket.TierReferenceId);
if (eventTier == null)
{
status = CancelTicketStatuses.TierNotFound;
return(null);
}
//Get customer info
CustomerServices customerServices = new CustomerServices();
var customer = customerServices.GetCustomerByRef(hostId, ticket.CustomerReferenceId);
if (customer == null)
{
status = CancelTicketStatuses.CustomerNotFound;
return(null);
}
//Refund the customer using funds from the event address
WalletServices walletServices = new WalletServices();
walletServices.Transfer(eventInfo.WalletAddress, customer.WalletAddress, ticket.PaidPrice.Value, ticket.BookingId, "Refund");
//Update ticket status to cancelled
admissionServices.UpdateTicketStatus(ticketId, TicketStatuses.Cancelled);
//Update ticket availability
BookingServices bookingServices = new BookingServices();
bookingServices.UpdateAvailableTickets(eventTier.TierId.Value, eventTier.AvailableTickets.Value + 1);
//Commit to blockchain
ContractApi blockchainContract = new ContractApi();
blockchainContract.CancelTicket(ticket.TicketNo);
status = CancelEventStatuses.Success;
result = new CancelTicketResponse();
result.EventTitle = ticket.EventTitle;
result.TierTitle = ticket.TierTitle;
result.PaidPrice = ticket.PaidPrice;
result.NewTicketStatus = TicketStatuses.Cancelled;
return(result);
}