public IActionResult Create()
{
BlockchainContract model = new BlockchainContract();
//var web3 = new Web3("https://localhost:44392/");
//var balance = await web3.Eth.GetBalance.SendRequestAsync("");
return(View(model));
}
/// <summary>
/// Inserts a new customer record in database.
/// </summary>
public CreateCustomerResponse CreateCustomer(long hostId, CreateCustomerRequest value)
{
CreateCustomerResponse result = new CreateCustomerResponse();
long newCustomerId = 0;
//Generate address
string customerAddress = HashUtility.GenerateHash();
using (var context = new AnnoDBContext())
{
//Insert customer to database
Customer customer = new Customer()
{
host_id = hostId,
ref_id = value.ReferenceId,
address = customerAddress,
record_status = RecordStatuses.Live,
created_date = DateTime.UtcNow
};
context.Customer.Add(customer);
context.SaveChanges();
//Get the Id of the newly created customer
newCustomerId = customer.customer_id;
}
//Create customer wallet
WalletServices walletServices = new WalletServices();
walletServices.CreateWallet(newCustomerId, WalletOwnerTypes.Customer, customerAddress);
//Commit to blockchain
IdentityServices identityService = new IdentityServices();
BlockchainContract blockchainContract = new BlockchainContract();
blockchainContract.CreateCustomer(identityService.AddressOf(IdentityServices.AddressTypes.Host, hostId), customerAddress, value.ReferenceId);
//TODO: For demo purpose, give 1000 ANN tokens to new customers
walletServices.Transfer(Config.OwnerScriptHash, customerAddress, 1000, null, "Demo");
//Commit to blockchain
blockchainContract.Transfer(Config.OwnerScriptHash, customerAddress, 1000);
result.WalletAddress = customerAddress;
result.WalletBalance = 1000;
return(result);
}
/// <summary>
/// Inserts a new host record in database.
/// </summary>
public void CreateHost(CreateHostRequest value, out string newAPIKey)
{
long newHostId = 0;
//Generate address
string hostAddress = HashUtility.GenerateHash();
using (var context = new AnnoDBContext())
{
//Insert host to database
var newHost = new Host()
{
name = value.Name,
address = hostAddress,
record_status = RecordStatuses.Live,
created_date = DateTime.UtcNow
};
context.Host.Add(newHost);
context.SaveChanges();
//Get the ID of the newly created host
newHostId = newHost.host_id;
//Generate new API key
newAPIKey = Guid.NewGuid().ToString().Replace("-", "");
//Insert into api_keys table
context.ApiKey.Add(new ApiKey()
{
host_id = newHostId,
api_key = newAPIKey,
record_status = RecordStatuses.Live,
created_date = DateTime.UtcNow
});
context.SaveChanges();
//Create host wallet
WalletServices walletService = new WalletServices();
walletService.CreateWallet(newHostId, WalletOwnerTypes.Host, hostAddress);
}
//Commit to blockchain
BlockchainContract blockchainContract = new BlockchainContract();
blockchainContract.CreateHost(hostAddress, value.Name);
}
public RedeemTicketReponse UseTicket(long hostId, string ticketNo, out string status)
{
RedeemTicketReponse result = null;
//Validate if ticket exists
var ticket = GetTicketByTicketNo(hostId, ticketNo);
if (ticket == null)
{
status = RedeemTicketStatuses.TicketNotFound;
return(null);
}
//Check ticket status
if (ticket.Status == TicketStatuses.Used)
{
status = RedeemTicketStatuses.TicketAlreadyUsed;
return(null);
}
else if (ticket.Status != TicketStatuses.Active)
{
status = RedeemTicketStatuses.TicketIsInactive;
return(null);
}
//Update ticket status
UpdateTicketStatus(ticket.TicketId.Value, TicketStatuses.Used);
//Commit to blockchain
BlockchainContract blockchainContract = new BlockchainContract();
blockchainContract.RedeemTicket(ticket.TicketAddress);
status = BookEventStatuses.Success;
result = new RedeemTicketReponse();
result.EventTitle = ticket.EventTitle;
result.TierTitle = ticket.TierTitle;
result.PaidPrice = ticket.PaidPrice;
result.NewTicketStatus = TicketStatuses.Used;
return(result);
}
public IActionResult Create(BlockchainContract model)
{
_db.BlockchainContracts.Add(model);
_db.SaveChanges();
return(Redirect("~/"));
}
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 ticketAddress = null;
List <KeyValuePair <long, string> > tierTicketNumbers = new List <KeyValuePair <long, string> >();
List <KeyValuePair <long, string> > tierTicketAddresses = 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);
ticketAddress = HashUtility.GenerateHash();
InsertUserTicket(customer.CustomerId.Value, bookingId, eventInfo.EventId.Value, tier.TierId.Value, ticketNumber, tier.Price.Value, "Active", ticketAddress);
tierTicketNumbers.Add(new KeyValuePair <long, string>(tier.TierId.Value, ticketNumber));
tierTicketAddresses.Add(new KeyValuePair <long, string>(tier.TierId.Value, ticketAddress));
}
}
//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
BlockchainContract blockchainContract = new BlockchainContract();
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();
List <string> ticketAddresses = tierTicketAddresses
.Where(x => x.Key == tier.TierId.Value)
.Select(x => x.Value).ToList();
blockchainContract.BookEventTier(customer.CustomerAddress, eventInfo.EventAddress, tier.TierAddress, ticket.Quantity, ticketNumbers, ticketAddresses);
}
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
BlockchainContract blockchainContract = new BlockchainContract();
blockchainContract.CancelTicket(ticket.TicketAddress);
status = CancelEventStatuses.Success;
result = new CancelTicketResponse();
result.EventTitle = ticket.EventTitle;
result.TierTitle = ticket.TierTitle;
result.PaidPrice = ticket.PaidPrice;
result.NewTicketStatus = TicketStatuses.Cancelled;
return(result);
}
/// <summary>
/// Inserts a new event record in the Events table.
/// </summary>
public void CreateEvent(long hostId, CreateEventsRequest value)
{
long newEventId = 0;
List <string> tierAddresses = new List <string>();
//Generate address
string eventAddress = HashUtility.GenerateHash();
using (var context = new AnnoDBContext())
{
//Insert event to database
var newEvent = new Events()
{
host_id = hostId,
ref_id = value.ReferenceId,
title = value.Title,
description = value.Description,
start_date = value.StartDate,
status = "Active",
address = eventAddress,
record_status = RecordStatuses.Pending,
created_date = DateTime.UtcNow
};
context.Events.Add(newEvent);
context.SaveChanges();
//Get the ID of the newly created record
newEventId = newEvent.event_id;
//Insert event tiers to database
foreach (var tier in value.Tiers)
{
//Generate address
string tierAddress = HashUtility.GenerateHash();
//Insert event to database
var newEventTier = new EventsTier()
{
host_id = hostId,
event_id = newEventId,
ref_id = tier.ReferenceId,
title = tier.Title,
description = tier.Description,
total_tickets = tier.TotalTickets,
available_tickets = tier.TotalTickets, //available tickets is set to total tickets for initial insert
price = Convert.ToDecimal(tier.Price),
status = "Active",
address = tierAddress,
record_status = RecordStatuses.Live,
created_date = DateTime.UtcNow
};
context.EventsTier.Add(newEventTier);
context.SaveChanges();
tierAddresses.Add(tierAddress);
}
//Update event record status to live
var record = context.Events.SingleOrDefault(x => x.event_id == newEventId);
if (record != null)
{
record.record_status = RecordStatuses.Live;
context.SaveChanges();
}
}
//Create event wallet
WalletServices walletServices = new WalletServices();
walletServices.CreateWallet(newEventId, WalletOwnerTypes.Event, eventAddress);
//Commit to blockchain
IdentityServices identityServices = new IdentityServices();
string hostAddress = identityServices.AddressOf(IdentityServices.AddressTypes.Host, hostId);
BlockchainContract blockchainContract = new BlockchainContract();
blockchainContract.CreateEvent(eventAddress, hostAddress, value.ReferenceId, value.Title, value.StartDate.Value, "Active");
for (int i = 0; i < value.Tiers.Count; i++)
{
blockchainContract.CreateEventTier(
tierAddresses[i], hostAddress, eventAddress, value.Tiers[i].ReferenceId, value.Tiers[i].Title,
value.Tiers[i].TotalTickets.Value, value.Tiers[i].TotalTickets.Value, value.Tiers[i].Price.Value);
}
}
public ClaimEarningsResponse ClaimEarnings(long hostId, ClaimEarningsRequest value, out string status)
{
ClaimEarningsResponse result = null;
//Get event
var eventInfo = GetEventByRef(hostId, value.ReferenceId);
if (eventInfo == null)
{
status = ClaimEarningsStatuses.EventNotFound;
return(null);
}
//Check event status
if (eventInfo.Status == EventStatuses.Cancelled)
{
status = ClaimEarningsStatuses.EventAlreadyCancelled;
return(null);
}
if (eventInfo.Status == EventStatuses.Closed)
{
status = ClaimEarningsStatuses.EventAlreadyClaimed;
return(null);
}
//Check if event has already started
if (DateTime.UtcNow < eventInfo.StartDate.Value)
{
status = ClaimEarningsStatuses.EventNotStarted;
return(null);
}
//Get host
HostServices hostServices = new HostServices();
var host = hostServices.GetHostInfoById(hostId);
if (host == null)
{
status = ClaimEarningsStatuses.HostNotFound;
return(null);
}
//Transfer event wallet balance to host wallet
WalletServices walletServices = new WalletServices();
walletServices.Transfer(eventInfo.WalletAddress, host.WalletAddress, eventInfo.WalletBalance.Value, null, "Claim");
//Update event status
UpdateEventStatusRequest req = new UpdateEventStatusRequest();
req.ReferenceId = eventInfo.ReferenceId;
req.NewStatus = EventStatuses.Closed;
UpdateEventStatus(hostId, req);
//Commit to blockchain
BlockchainContract blockchainContract = new BlockchainContract();
blockchainContract.ClaimEarnings(eventInfo.EventAddress);
status = ClaimEarningsStatuses.Success;
result = new ClaimEarningsResponse();
result.EventTitle = eventInfo.Title;
result.Earnings = eventInfo.WalletBalance.Value;
return(result);
}