public static SubscriptionPayment Buy(
PayerId payerId,
SubscriptionPeriod period,
string countryCode,
MoneyValue priceOffer,
PriceList priceList)
{
var priceInPriceList = priceList.GetPrice(countryCode, period, PriceListItemCategory.New);
CheckRule(new PriceOfferMustMatchPriceInPriceListRule(priceOffer, priceInPriceList));
var subscriptionPayment = new SubscriptionPayment();
var subscriptionPaymentCreated = new SubscriptionPaymentCreatedDomainEvent(
Guid.NewGuid(),
payerId.Value,
period.Code,
countryCode,
SubscriptionPaymentStatus.WaitingForPayment.Code,
priceOffer.Value,
priceOffer.Currency);
subscriptionPayment.Apply(subscriptionPaymentCreated);
subscriptionPayment.AddDomainEvent(subscriptionPaymentCreated);
return(subscriptionPayment);
}
private void When(PriceListItemAttributesChangedDomainEvent @event)
{
this._countryCode = @event.CountryCode;
this._subscriptionPeriod = SubscriptionPeriod.Of(@event.SubscriptionPeriodCode);
this._category = PriceListItemCategory.Of(@event.CategoryCode);
this._price = MoneyValue.Of(@event.Price, @event.Currency);
}
public async Task <Guid> Handle(BuySubscriptionRenewalCommand command, CancellationToken cancellationToken)
{
var priceList = await PriceListProvider.GetPriceList(_sqlConnectionFactory.GetOpenConnection());
var subscriptionId = new SubscriptionId(command.SubscriptionId);
var subscription = await _aggregateStore.Load(new SubscriptionId(command.SubscriptionId));
if (subscription == null)
{
throw new InvalidCommandException(new List <string> {
"Subscription for renewal must exist."
});
}
var subscriptionRenewalPayment = SubscriptionRenewalPayment.Buy(
_payerContext.PayerId,
subscriptionId,
SubscriptionPeriod.Of(command.SubscriptionTypeCode),
command.CountryCode,
MoneyValue.Of(command.Value, command.Currency),
priceList);
_aggregateStore.AppendChanges(subscriptionRenewalPayment);
return(subscriptionRenewalPayment.Id);
}
public MoneyValue GetPrice(string countryCode, SubscriptionPeriod subscriptionPeriod, PriceListItemCategory category)
{
var priceListItem = _items.Single(x =>
x.CountryCode == countryCode && x.SubscriptionPeriod == subscriptionPeriod &&
x.Category == category);
return(priceListItem.Value - _discountValue);
}
private void When(PriceListItemCreatedDomainEvent @event)
{
this.Id = @event.PriceListItemId;
_countryCode = @event.CountryCode;
_subscriptionPeriod = SubscriptionPeriod.Of(@event.SubscriptionPeriodCode);
_category = PriceListItemCategory.Of(@event.CategoryCode);
_price = MoneyValue.Of(@event.Price, @event.Currency);
_isActive = true;
}
public PriceForSubscriptionMustBeDefined(
string countryCode,
SubscriptionPeriod subscriptionPeriod,
IList <PriceListItemData> priceListItems)
{
_countryCode = countryCode;
_subscriptionPeriod = subscriptionPeriod;
_priceListItems = priceListItems;
}
private void When(SubscriptionPaymentCreatedDomainEvent @event)
{
this.Id = @event.SubscriptionPaymentId;
_payerId = new PayerId(@event.PayerId);
_subscriptionPeriod = SubscriptionPeriod.Of(@event.SubscriptionPeriodCode);
_countryCode = @event.CountryCode;
_subscriptionPaymentStatus = SubscriptionPaymentStatus.Of(@event.Status);
_value = MoneyValue.Of(@event.Value, @event.Currency);
}
public MoneyValue GetPrice(
string countryCode,
SubscriptionPeriod subscriptionPeriod,
PriceListItemCategory category)
{
CheckRule(new PriceForSubscriptionMustBeDefinedRule(countryCode, subscriptionPeriod, _items, category));
return(_pricingStrategy.GetPrice(countryCode, subscriptionPeriod, category));
}
public SubscriptionRenewalPaymentSnapshot(
SubscriptionRenewalPaymentId id,
PayerId payerId,
SubscriptionPeriod subscriptionPeriod,
string countryCode)
{
PayerId = payerId;
SubscriptionPeriod = subscriptionPeriod;
CountryCode = countryCode;
Id = id;
}
public PriceForSubscriptionMustBeDefinedRule(
string countryCode,
SubscriptionPeriod subscriptionPeriod,
IList <PriceListItemData> priceListItems,
PriceListItemCategory category)
{
_countryCode = countryCode;
_subscriptionPeriod = subscriptionPeriod;
_priceListItems = priceListItems;
_category = category;
}
public void ChangeAttributes(
string countryCode,
SubscriptionPeriod subscriptionPeriod,
PriceListItemCategory category,
MoneyValue price)
{
var priceListItemChangedDomainEvent = new PriceListItemAttributesChangedDomainEvent(this.Id, countryCode, subscriptionPeriod.Code, category.Code, price.Value, price.Currency);
this.Apply(priceListItemChangedDomainEvent);
this.AddDomainEvent(priceListItemChangedDomainEvent);
}
public PriceListItemData(
string countryCode,
SubscriptionPeriod subscriptionPeriod,
MoneyValue value,
PriceListItemCategory category)
{
CountryCode = countryCode;
Value = value;
Category = category;
SubscriptionPeriod = subscriptionPeriod;
}
public Task <Guid> Handle(CreatePriceListItemCommand command, CancellationToken cancellationToken)
{
var priceListItem = PriceListItem.Create(
command.CountryCode,
SubscriptionPeriod.Of(command.SubscriptionPeriodCode),
PriceListItemCategory.Of(command.CategoryCode),
MoneyValue.Of(command.PriceValue, command.PriceCurrency));
_aggregateStore.AppendChanges(priceListItem);
return(Task.FromResult(priceListItem.Id));
}
public MoneyValue GetPrice(
string countryCode,
SubscriptionPeriod subscriptionPeriod,
PriceListItemCategory category)
{
CheckRule(new PriceForSubscriptionMustBeDefined(countryCode, subscriptionPeriod, _items, category));
var priceListItem = _items.Single(x =>
x.CountryCode == countryCode && x.SubscriptionPeriod == subscriptionPeriod &&
x.Category == category);
return(priceListItem.Value);
}
public async Task <Unit> Handle(ChangePriceListItemAttributesCommand command, CancellationToken cancellationToken)
{
var priceListItem = await _aggregateStore.Load(new PriceListItemId(command.PriceListItemId));
priceListItem.ChangeAttributes(
command.CountryCode,
SubscriptionPeriod.Of(command.SubscriptionPeriodCode),
PriceListItemCategory.Of(command.CategoryCode),
MoneyValue.Of(command.PriceValue, command.PriceCurrency));
_aggregateStore.AppendChanges(priceListItem);
return(Unit.Value);
}
public void CalculateForNew_WhenPeriodHalfYearIsSelected_Test()
{
// Arrange
SubscriptionPeriod period = SubscriptionPeriod.HalfYear;
SystemClock.Set(new DateTime(2020, 5, 11));
// Act
DateTime expirationDate = SubscriptionDateExpirationCalculator.CalculateForNew(period);
// Assert
Assert.That(expirationDate, Is.EqualTo(new DateTime(2020, 11, 11)));
}
public static async Task <PriceList> GetPriceList(IDbConnection connection)
{
var priceListItemList = await GetPriceListItems(connection);
return(PriceList.CreateFromItems(
priceListItemList
.Select(x =>
new PriceListItemData(
x.CountryCode,
SubscriptionPeriod.Of(x.SubscriptionPeriodCode),
MoneyValue.Of(x.MoneyValue, x.MoneyCurrency),
PriceListItemCategory.Of(x.CategoryCode)))
.ToList()));
}
public void CalculateForRenewal_WhenPeriodMonthIsSelected_AndExpireDatePassed_ThenMonthsAreAddedToNow()
{
// Arrange
SubscriptionPeriod period = SubscriptionPeriod.Month;
SystemClock.Set(new DateTime(2020, 5, 11));
DateTime expirationDate = new DateTime(2020, 4, 1);
// Act
expirationDate = SubscriptionDateExpirationCalculator.CalculateForRenewal(expirationDate, period);
// Assert
Assert.That(expirationDate, Is.EqualTo(new DateTime(2020, 6, 11)));
}
public async Task <Guid> Handle(BuySubscriptionCommand command, CancellationToken cancellationToken)
{
var priceList = await PriceListProvider.GetPriceList(_sqlConnectionFactory.GetOpenConnection());
var subscription = SubscriptionPayment.Buy(
_payerContext.PayerId,
SubscriptionPeriod.Of(command.SubscriptionTypeCode),
command.CountryCode,
MoneyValue.Of(command.Value, command.Currency),
priceList);
_aggregateStore.AppendChanges(subscription);
return(subscription.Id);
}
private PeriodType ToPeriodType(SubscriptionPeriod periodType)
{
switch (periodType)
{
case SubscriptionPeriod.Monthly:
return(PeriodType.Month);
case SubscriptionPeriod.Daily:
return(PeriodType.Day);
case SubscriptionPeriod.Yearly:
return(PeriodType.Year);
default: throw new InvalidOperationException($"Can't convert {nameof(SubscriptionPeriod)} to {nameof(PeriodType)}");
}
}
private async Task When(SubscriptionCreatedDomainEvent subscriptionCreated)
{
var period = SubscriptionPeriod.GetName(subscriptionCreated.SubscriptionPeriodCode);
await _connection.ExecuteScalarAsync("INSERT INTO payments.SubscriptionDetails " +
"([Id], [Period], [Status], [CountryCode], [ExpirationDate]) " +
"VALUES (@SubscriptionId, @Period, @Status, @CountryCode, @ExpirationDate)",
new
{
subscriptionCreated.SubscriptionId,
period,
subscriptionCreated.Status,
subscriptionCreated.CountryCode,
subscriptionCreated.ExpirationDate
});
}
private async Task When(SubscriptionRenewedDomainEvent subscriptionRenewed)
{
var period = SubscriptionPeriod.GetName(subscriptionRenewed.SubscriptionPeriodCode);
await _connection.ExecuteScalarAsync("UPDATE payments.SubscriptionDetails " +
"SET " +
"[Status] = @Status, " +
"[ExpirationDate] = @ExpirationDate, " +
"[Period] = @Period " +
"WHERE [Id] = @SubscriptionId",
new
{
subscriptionRenewed.SubscriptionId,
subscriptionRenewed.Status,
subscriptionRenewed.ExpirationDate,
period
});
}
public async Task <Unit> Handle(ChangePriceListItemAttributesCommand command, CancellationToken cancellationToken)
{
var priceListItem = await _aggregateStore.Load(new PriceListItemId(command.PriceListItemId));
if (priceListItem == null)
{
throw new InvalidCommandException(new List <string> {
"Pricelist item for changing must exist."
});
}
priceListItem.ChangeAttributes(
command.CountryCode,
SubscriptionPeriod.Of(command.SubscriptionPeriodCode),
PriceListItemCategory.Of(command.CategoryCode),
MoneyValue.Of(command.PriceValue, command.PriceCurrency));
_aggregateStore.AppendChanges(priceListItem);
return(Unit.Value);
}
public static async Task <PriceList> CreatePriceList(IDbConnection connection)
{
var priceListItemList = await GetPriceListItems(connection);
var priceListItems = priceListItemList
.Select(x =>
new PriceListItemData(
x.CountryCode,
SubscriptionPeriod.Of(x.SubscriptionPeriodCode),
MoneyValue.Of(x.MoneyValue, x.MoneyCurrency),
PriceListItemCategory.Of(x.CategoryCode)))
.ToList();
// This is place for selecting pricing strategy based on provided data and the system state.
IPricingStrategy pricingStrategy = new DirectValueFromPriceListPricingStrategy(priceListItems);
return(PriceList.Create(
priceListItems,
pricingStrategy));
}
private async Task When(SubscriptionPaymentCreatedDomainEvent subscriptionPaymentCreated)
{
string period = SubscriptionPeriod.GetName(subscriptionPaymentCreated.SubscriptionPeriodCode);
await _connection.ExecuteScalarAsync(
"INSERT INTO payments.SubscriptionPayments " +
"([PaymentId], [PayerId], [Type], [Status], [Period], [Date], " +
"[SubscriptionId], [MoneyValue], [MoneyCurrency]) " +
"VALUES (@SubscriptionPaymentId, @PayerId, @Type, @Status, @Period, " +
"@OccurredOn, NULL, @Value, @Currency)",
new
{
subscriptionPaymentCreated.SubscriptionPaymentId,
subscriptionPaymentCreated.PayerId,
Type = "Initial Payment",
subscriptionPaymentCreated.Status,
period,
subscriptionPaymentCreated.OccurredOn,
subscriptionPaymentCreated.Value,
subscriptionPaymentCreated.Currency
});
}
public static PriceListItem Create(
string countryCode,
SubscriptionPeriod subscriptionPeriod,
PriceListItemCategory category,
MoneyValue price)
{
var priceListItem = new PriceListItem();
var priceListItemCreatedEvent = new PriceListItemCreatedDomainEvent(
Guid.NewGuid(),
countryCode,
subscriptionPeriod.Code,
category.Code,
price.Value,
price.Currency,
isActive: true);
priceListItem.Apply(priceListItemCreatedEvent);
priceListItem.AddDomainEvent(priceListItemCreatedEvent);
return(priceListItem);
}
public MoneyValue GetPrice(string countryCode, SubscriptionPeriod subscriptionPeriod, PriceListItemCategory category)
{
return(_directValue);
}
public async Task Subscription_Buy_ThenRenew_ThenExpire_Test()
{
await PriceListHelper.AddPriceListItems(PaymentsModule);
DateTime referenceDate = new DateTime(2020, 6, 15);
SystemClock.Set(referenceDate);
var subscriptionPaymentId = await PaymentsModule.ExecuteCommandAsync(
new BuySubscriptionCommand(
"Month",
"PL",
60,
"PLN"));
var subscriptionPayments = await GetEventually(
new GetSubscriptionPaymentsProbe(PaymentsModule, ExecutionContext.UserId,
x => true),
10000);
var subscriptionPayment = subscriptionPayments.Single(x => x.PaymentId == subscriptionPaymentId);
Assert.That(subscriptionPayment.Status, Is.EqualTo(SubscriptionPaymentStatus.WaitingForPayment.Code));
await PaymentsModule.ExecuteCommandAsync(
new MarkSubscriptionPaymentAsPaidCommand(subscriptionPaymentId));
subscriptionPayments = await GetEventually(
new GetSubscriptionPaymentsProbe(PaymentsModule, ExecutionContext.UserId,
x => x.Any(y => y.Status == SubscriptionPaymentStatus.Paid.Code &&
y.SubscriptionId.HasValue)),
10000);
subscriptionPayment = subscriptionPayments.Single(x => x.PaymentId == subscriptionPaymentId);
var subscriptionId = subscriptionPayment.SubscriptionId.GetValueOrDefault();
var subscription = await GetEventually(
new GetSubscriptionDetailsProbe(
PaymentsModule,
subscriptionId,
x => x.SubscriptionId == subscriptionId &&
x.Status == SubscriptionStatus.Active.Code &&
x.Period == SubscriptionPeriod.Month.Code), 5000);
Assert.That(subscriptionPayments[0].Status, Is.EqualTo(SubscriptionPaymentStatus.Paid.Code));
Assert.That(subscription.ExpirationDate, Is.EqualTo(referenceDate.AddMonths(1)));
var subscriptionRenewalPaymentId = await PaymentsModule.ExecuteCommandAsync(
new BuySubscriptionRenewalCommand(
subscriptionId,
"HalfYear",
"PL",
320,
"PLN"));
subscriptionPayments = await GetEventually(
new GetSubscriptionPaymentsProbe(PaymentsModule, ExecutionContext.UserId,
x => true),
10000);
var renewalPayment = subscriptionPayments
.Single(x => x.PaymentId == subscriptionRenewalPaymentId);
Assert.That(renewalPayment.Status, Is.EqualTo(SubscriptionRenewalPaymentStatus.WaitingForPayment.Code));
await PaymentsModule.ExecuteCommandAsync(
new MarkSubscriptionRenewalPaymentAsPaidCommand(subscriptionRenewalPaymentId));
subscriptionPayments = await GetEventually(
new GetSubscriptionPaymentsProbe(PaymentsModule, ExecutionContext.UserId,
x => x.Any(y => y.PaymentId == subscriptionRenewalPaymentId)),
10000);
renewalPayment = subscriptionPayments
.Single(x => x.PaymentId == subscriptionRenewalPaymentId);
subscription = await GetEventually(
new GetSubscriptionDetailsProbe(
PaymentsModule,
subscriptionId,
x => x.SubscriptionId == subscriptionId &&
x.Period == SubscriptionPeriod.GetName(SubscriptionPeriod.HalfYear.Code) &&
x.Status == SubscriptionStatus.Active.Code
), 5000);
Assert.That(renewalPayment.Status, Is.EqualTo(SubscriptionRenewalPaymentStatus.Paid.Code));
Assert.That(subscription.ExpirationDate, Is.EqualTo(referenceDate.AddMonths(7)));
SystemClock.Set(referenceDate.AddMonths(7).AddDays(1));
await PaymentsModule.ExecuteCommandAsync(new ExpireSubscriptionsCommand());
subscription = await GetEventually(
new GetSubscriptionDetailsProbe(
PaymentsModule,
subscriptionId,
x => x.SubscriptionId == subscriptionId &&
x.Status == SubscriptionStatus.Expired.Code),
10000);
Assert.That(subscription, Is.Not.Null);
}