private async Task ChargeSucceededAsync(DomainEvent billingEvent)
{
// Retrieve company by charge data
DomainCharge charge = await _billingChargeService.GetAsync(new DomainCharge { Id = billingEvent.ObjectId });
DomainCompany company = await _companyService.FindByCustomerAsync(charge.CustomerId);
// Updating balance
var balanceRecord = new DomainBalanceHistory
{
Amount = charge.AmountInCents,
Description = BillingMessages.ChargeSucceeded,
CompanyId = company.Id
};
await _balanceService.AddAsync(balanceRecord);
// Notify client about payment operation result
try
{
await _notificationService.SendPaymentNotificationAsync(billingEvent, company, charge);
}
catch (Exception e)
{
Trace.TraceError("Failed to send payment notification e-mail to company {0}: {1}", company.Id, e);
}
}
public async Task <DomainBalanceHistory> AddAsync(DomainBalanceHistory record)
{
BalanceHistoryEntity entity = _mapper.Map <DomainBalanceHistory, BalanceHistoryEntity>(record);
entity.Date = DateTime.UtcNow;
entity = await _balanceHistoryRepository.AddAsync(entity);
DomainBalanceHistory result = _mapper.Map <BalanceHistoryEntity, DomainBalanceHistory>(entity);
return(result);
}
private async Task ChargeRefundedAsync(DomainEvent billingEvent)
{
// Get charge info
DomainCharge charge = await _billingChargeService.GetAsync(new DomainCharge { Id = billingEvent.ObjectId });
var refunds = billingEvent.Object["refunds"] as JArray;
if (refunds != null)
{
// refund can be partial, accounting only last refund
JToken lastRefund = refunds.Last;
int refundInCents = Int32.Parse(lastRefund["amount"].ToString());
charge.AmountInCents = refundInCents;
}
// Retrieve company by customer
DomainCompany company = await _companyService.FindByCustomerAsync(charge.CustomerId);
// updating balance
var balanceRecord = new DomainBalanceHistory
{
Amount = -charge.AmountInCents,
Description = BillingMessages.ChargeRefunded,
CompanyId = company.Id
};
await _balanceService.AddAsync(balanceRecord);
// Notify client about payment operation result
try
{
await _notificationService.SendPaymentNotificationAsync(billingEvent, company, charge);
}
catch (Exception e)
{
Trace.TraceError("Failed to send payment notification e-mail to company {0}: {1}", company.Id, e);
}
}
public void TestInaccauntableClicks()
{
// 1. Arrange
// config
_config.Setup(x => x.SubscriptionPlans)
.Returns(
() =>
JObject.Parse(
"{ 0: { syncPeriodMs: 0, cyclePeriodMs: 0, clickRates: { 0: 0 } }, 1: { syncPeriodMs: 60000, cyclePeriodMs: 2592000000, clickRates: { 0: 0, 20: 10 } }, 2: { syncPeriodMs: 2592000000, cyclePeriodMs: 2592000000, clickRates: { 0: 0, 100000: 0.05, 1000000: 0.01 } }, 3: { syncPeriodMs: 2592000000, cyclePeriodMs: 2592000000, clickRates: { 0: 0, 100000: 0.05, 1000000: 0.01 } } }"));
_config.Setup(x => x.BillingInvoiceItemDescriptionTemplate).Returns(() => "{0}");
// stats service
var stas = new List <TrackingStatEntity>
{
new TrackingStatEntity {
Date = new DateTime(2014, 6, 4, 14, 28, 35, 596)
},
new TrackingStatEntity {
Date = new DateTime(2014, 6, 4, 14, 28, 36, 995)
},
new TrackingStatEntity {
Date = new DateTime(2014, 6, 4, 14, 28, 41, 889)
},
new TrackingStatEntity {
Date = new DateTime(2014, 6, 4, 14, 28, 44, 249)
},
new TrackingStatEntity {
Date = new DateTime(2014, 6, 4, 14, 28, 48, 335)
}
};
_statService.Setup(x => x.GetTotalAsync(It.IsAny <string>(), It.IsAny <DateTime?>(), It.IsAny <DateTime?>())).Returns <string, DateTime?, DateTime?>((i, f, t) =>
{
IQueryable <TrackingStatEntity> r = stas.AsQueryable();
if (f.HasValue)
{
r = r.Where(s => s.Date >= f.Value);
}
if (t.HasValue)
{
r = r.Where(s => s.Date < t.Value);
}
return(Task.FromResult(r.LongCount()));
});
// company service
var company = new DomainCompany
{
State = ResourceState.Available,
Subscriptions = new List <CompanySubscription>
{
new CompanySubscription
{
State = ResourceState.Available,
Type = SubscriptionType.Basic,
Created = new DateTime(2014, 6, 4, 14, 25, 14, 133),
LastSyncDate = null,
LastCycleDate = new DateTime(2014, 6, 4, 14, 27, 37, 939),
HasTrialClicks = false
}
}
};
var companies = new List <DomainCompany> {
company
};
_companyService.Setup(x => x.ListAsync()).Returns(() => Task.FromResult(companies.AsEnumerable()));
// balance service
var balance = new DomainBalanceHistory();
_balanceService.Setup(x => x.AddAsync(It.IsAny <DomainBalanceHistory>())).Returns <DomainBalanceHistory>(b =>
{
balance = b;
return(Task.FromResult(balance));
});
// 2. Act
var syncDate = new DateTime(2014, 6, 4, 14, 28, 37, 939);
_syncManager.SyncAsync(syncDate).Wait();
// 3. Assert
long actualCount = Int64.Parse(balance.Description);
Assert.AreEqual(2, actualCount);
}
private async Task SyncSubscriptionAsync(string companyId, CompanySubscription subscription, DateTime syncDate, JObject subscriptionPlans)
{
if (subscription.Type == SubscriptionType.Free)
{
// nothing to sync
return;
}
JToken planInfo = subscriptionPlans[((int)subscription.Type).ToString(CultureInfo.InvariantCulture)];
// Check invoice period
DateTime lastSyncDate = subscription.LastSyncDate ?? subscription.Created;
long syncPeriodMs = Int64.Parse((string)planInfo["syncPeriodMs"]);
if (syncPeriodMs <= 0 || syncDate.Subtract(lastSyncDate).TotalMilliseconds < syncPeriodMs)
{
// its too early for invoice
return;
}
// Calculate clicks for sync period
long periodClicks = await _statService.GetTotalAsync(subscription.Id, lastSyncDate, syncDate);
// Calculate clicks for cycle
DateTime lastCycleDate = subscription.LastCycleDate ?? subscription.Created;
long cycleClicks = await _statService.GetTotalAsync(subscription.Id, lastCycleDate, lastSyncDate);
JToken clickRatesInfo = planInfo["clickRates"];
var charges = new List <Tuple <decimal, long, long, long?> >();
long clicks = periodClicks;
decimal lastRate = 0;
long lastCount = 0;
long clicksMargin = cycleClicks;
foreach (JToken clickRate in clickRatesInfo)
{
var r = clickRate as JProperty;
if (r == null)
{
continue;
}
long count = Int64.Parse(r.Name);
decimal rate = Decimal.Parse((string)r.Value);
if (count <= 0)
{
// skip free/initial rate range
lastRate = rate;
continue;
}
if (clicksMargin >= count)
{
// skip last bill
lastRate = rate;
lastCount = count;
continue;
}
// calculate charge for range of clicks
long lastRange = Math.Max(clicksMargin, lastCount);
long rangeClicks = lastRange + clicks < count ? clicks : count - lastRange;
// reseting margin
clicksMargin = 0;
// creating charge
if (rangeClicks > 0)
{
charges.Add(new Tuple <decimal, long, long, long?>(lastRate, rangeClicks, lastCount, count));
}
// going to next range
lastRate = rate;
lastCount = count;
clicks -= rangeClicks;
if (clicks == 0)
{
break;
}
}
if (clicks > 0)
{
// using last specified rate for exceeded clicks
charges.Add(new Tuple <decimal, long, long, long?>(lastRate, clicks, lastCount, null));
}
// Synchronizing
var chargeRecords = new List <DomainBalanceHistory>();
try
{
if (charges.Count > 0)
{
if (charges.Sum(c => c.Item1) > 0)
{
// trial clicks ended
await _subscriptionService.UpdateHasTrialClicksAsync(subscription.Id, false);
}
else
{
// trial clicks
await _subscriptionService.UpdateHasTrialClicksAsync(subscription.Id, true);
}
foreach (var charge in charges)
{
decimal rate = charge.Item1;
long count = charge.Item2;
long lowCount = charge.Item3;
long? highCount = charge.Item4;
string packageName = highCount.HasValue ? string.Format("{0}-{1}", lowCount, highCount) : string.Format("{0}+", lowCount);
var balanceRecord = new DomainBalanceHistory
{
CompanyId = companyId,
Amount = -(rate * count),
Description =
string.Format(_config.BillingInvoiceItemDescriptionTemplate, count, subscription.SiteName, subscription.Id, subscription.Type, rate / 100, packageName, lastSyncDate,
syncDate)
};
await _balanceService.AddAsync(balanceRecord);
chargeRecords.Add(balanceRecord);
}
}
// cycle completed
long cyclePeriodMs = Int64.Parse((string)planInfo["cyclePeriodMs"]);
if (cyclePeriodMs > 0 && syncDate.Subtract(lastCycleDate).TotalMilliseconds >= cyclePeriodMs)
{
// updating last cycle date if cycle completed
await _subscriptionService.UpdateLastCycleDateAsync(subscription.Id, syncDate);
// enabling trial clicks
await _subscriptionService.UpdateHasTrialClicksAsync(subscription.Id, true);
}
// updating last sync date
await _subscriptionService.UpdateLastSyncDateAsync(subscription.Id, syncDate);
}
catch (Exception e)
{
Trace.TraceError("Failed to sync balance for subscription {0} of company {1}: {2}", companyId, subscription.Id, e);
// trying rollback
try
{
// rollback balance
if (chargeRecords.Count > 0)
{
foreach (DomainBalanceHistory record in chargeRecords)
{
_balanceService.DeleteAsync(record.Id).Wait();
}
}
// rollback subscription state
_subscriptionService.UpdateLastCycleDateAsync(subscription.Id, lastCycleDate).Wait();
_subscriptionService.UpdateHasTrialClicksAsync(subscription.Id, subscription.HasTrialClicks).Wait();
}
catch (Exception ex)
{
Trace.TraceError("Failed to roll back subscription {0} state for company {1}. Subscription data is corrupted: {2}", subscription.Id, companyId, ex);
}
}
}
