[AC-1693] Send InvoiceUpcoming Notification to Client Owners (#3319)

* Add Organization_ReadOwnerEmailAddresses SPROC

* Add IOrganizationRepository.GetOwnerEmailAddressesById

* Add SendInvoiceUpcoming overload for multiple emails

* Update InvoiceUpcoming handler to send multiple emails

* Cy's feedback

* Updates from testing

Hardened against missing entity IDs in Stripe events in the StripeEventService. Updated ValidateCloudRegion to not use a refresh/expansion for the customer because the invoice.upcoming event does not have an invoice.Id. Updated the StripeController's handling of invoice.upcoming to not use a refresh/expansion for the subscription because the invoice does not have an ID.

* Fix broken test

src/Billing/Controllers/StripeController.cs

@@ -52,6 +52,7 @@ public class StripeController : Controller
     private readonly ICurrentContext _currentContext;
     private readonly GlobalSettings _globalSettings;
     private readonly IStripeEventService _stripeEventService;
+    private readonly IStripeFacade _stripeFacade;
 
     public StripeController(
         GlobalSettings globalSettings,
@@ -70,7 +71,8 @@ public class StripeController : Controller
         ITaxRateRepository taxRateRepository,
         IUserRepository userRepository,
         ICurrentContext currentContext,
-        IStripeEventService stripeEventService)
+        IStripeEventService stripeEventService,
+        IStripeFacade stripeFacade)
     {
         _billingSettings = billingSettings?.Value;
         _hostingEnvironment = hostingEnvironment;
@@ -97,6 +99,7 @@ public class StripeController : Controller
         _currentContext = currentContext;
         _globalSettings = globalSettings;
         _stripeEventService = stripeEventService;
+        _stripeFacade = stripeFacade;
     }
 
     [HttpPost("webhook")]
@@ -209,48 +212,71 @@ public class StripeController : Controller
         else if (parsedEvent.Type.Equals(HandledStripeWebhook.UpcomingInvoice))
         {
             var invoice = await _stripeEventService.GetInvoice(parsedEvent);
-            var subscriptionService = new SubscriptionService();
-            var subscription = await subscriptionService.GetAsync(invoice.SubscriptionId);
+
+            if (string.IsNullOrEmpty(invoice.SubscriptionId))
+            {
+                _logger.LogWarning("Received 'invoice.upcoming' Event with ID '{eventId}' that did not include a Subscription ID", parsedEvent.Id);
+                return new OkResult();
+            }
+
+            var subscription = await _stripeFacade.GetSubscription(invoice.SubscriptionId);
+
             if (subscription == null)
             {
-                throw new Exception("Invoice subscription is null. " + invoice.Id);
+                throw new Exception(
+                    $"Received null Subscription from Stripe for ID '{invoice.SubscriptionId}' while processing Event with ID '{parsedEvent.Id}'");
             }
 
-            subscription = await VerifyCorrectTaxRateForCharge(invoice, subscription);
+            var updatedSubscription = await VerifyCorrectTaxRateForCharge(invoice, subscription);
 
-            string email = null;
-            var ids = GetIdsFromMetaData(subscription.Metadata);
-            // org
-            if (ids.Item1.HasValue)
+            var (organizationId, userId) = GetIdsFromMetaData(updatedSubscription.Metadata);
+
+            var invoiceLineItemDescriptions = invoice.Lines.Select(i => i.Description).ToList();
+
+            async Task SendEmails(IEnumerable<string> emails)
             {
-                // sponsored org
-                if (IsSponsoredSubscription(subscription))
+                var validEmails = emails.Where(e => !string.IsNullOrEmpty(e));
+
+                if (invoice.NextPaymentAttempt.HasValue)
                 {
-                    await _validateSponsorshipCommand.ValidateSponsorshipAsync(ids.Item1.Value);
+                    await _mailService.SendInvoiceUpcoming(
+                        validEmails,
+                        invoice.AmountDue / 100M,
+                        invoice.NextPaymentAttempt.Value,
+                        invoiceLineItemDescriptions,
+                        true);
                 }
+            }
 
-                var org = await _organizationRepository.GetByIdAsync(ids.Item1.Value);
-                if (org != null && OrgPlanForInvoiceNotifications(org))
+            if (organizationId.HasValue)
+            {
+                if (IsSponsoredSubscription(updatedSubscription))
+                {
+                    await _validateSponsorshipCommand.ValidateSponsorshipAsync(organizationId.Value);
+                }
+
+                var organization = await _organizationRepository.GetByIdAsync(organizationId.Value);
+
+                if (organization == null || !OrgPlanForInvoiceNotifications(organization))
                 {
-                    email = org.BillingEmail;
+                    return new OkResult();
                 }
+
+                await SendEmails(new List<string> { organization.BillingEmail });
+
+                var ownerEmails = await _organizationRepository.GetOwnerEmailAddressesById(organization.Id);
+
+                await SendEmails(ownerEmails);
             }
-            // user
-            else if (ids.Item2.HasValue)
+            else if (userId.HasValue)
             {
-                var user = await _userService.GetUserByIdAsync(ids.Item2.Value);
+                var user = await _userService.GetUserByIdAsync(userId.Value);
+
                 if (user.Premium)
                 {
-                    email = user.Email;
+                    await SendEmails(new List<string> { user.Email });
                 }
             }
-
-            if (!string.IsNullOrWhiteSpace(email) && invoice.NextPaymentAttempt.HasValue)
-            {
-                var items = invoice.Lines.Select(i => i.Description).ToList();
-                await _mailService.SendInvoiceUpcomingAsync(email, invoice.AmountDue / 100M,
-                    invoice.NextPaymentAttempt.Value, items, true);
-            }
         }
         else if (parsedEvent.Type.Equals(HandledStripeWebhook.ChargeSucceeded))
         {

src/Billing/Services/Implementations/StripeEventService.cs

@@ -7,13 +7,16 @@ namespace Bit.Billing.Services.Implementations;
 public class StripeEventService : IStripeEventService
 {
     private readonly GlobalSettings _globalSettings;
+    private readonly ILogger<StripeEventService> _logger;
     private readonly IStripeFacade _stripeFacade;
 
     public StripeEventService(
         GlobalSettings globalSettings,
+        ILogger<StripeEventService> logger,
         IStripeFacade stripeFacade)
     {
         _globalSettings = globalSettings;
+        _logger = logger;
         _stripeFacade = stripeFacade;
     }
 
@@ -26,6 +29,12 @@ public class StripeEventService : IStripeEventService
             return eventCharge;
         }
 
+        if (string.IsNullOrEmpty(eventCharge.Id))
+        {
+            _logger.LogWarning("Cannot retrieve up-to-date Charge for Event with ID '{eventId}' because no Charge ID was included in the Event.", stripeEvent.Id);
+            return eventCharge;
+        }
+
         var charge = await _stripeFacade.GetCharge(eventCharge.Id, new ChargeGetOptions { Expand = expand });
 
         if (charge == null)
@@ -46,6 +55,12 @@ public class StripeEventService : IStripeEventService
             return eventCustomer;
         }
 
+        if (string.IsNullOrEmpty(eventCustomer.Id))
+        {
+            _logger.LogWarning("Cannot retrieve up-to-date Customer for Event with ID '{eventId}' because no Customer ID was included in the Event.", stripeEvent.Id);
+            return eventCustomer;
+        }
+
         var customer = await _stripeFacade.GetCustomer(eventCustomer.Id, new CustomerGetOptions { Expand = expand });
 
         if (customer == null)
@@ -66,6 +81,12 @@ public class StripeEventService : IStripeEventService
             return eventInvoice;
         }
 
+        if (string.IsNullOrEmpty(eventInvoice.Id))
+        {
+            _logger.LogWarning("Cannot retrieve up-to-date Invoice for Event with ID '{eventId}' because no Invoice ID was included in the Event.", stripeEvent.Id);
+            return eventInvoice;
+        }
+
         var invoice = await _stripeFacade.GetInvoice(eventInvoice.Id, new InvoiceGetOptions { Expand = expand });
 
         if (invoice == null)
@@ -86,6 +107,12 @@ public class StripeEventService : IStripeEventService
             return eventPaymentMethod;
         }
 
+        if (string.IsNullOrEmpty(eventPaymentMethod.Id))
+        {
+            _logger.LogWarning("Cannot retrieve up-to-date Payment Method for Event with ID '{eventId}' because no Payment Method ID was included in the Event.", stripeEvent.Id);
+            return eventPaymentMethod;
+        }
+
         var paymentMethod = await _stripeFacade.GetPaymentMethod(eventPaymentMethod.Id, new PaymentMethodGetOptions { Expand = expand });
 
         if (paymentMethod == null)
@@ -106,6 +133,12 @@ public class StripeEventService : IStripeEventService
             return eventSubscription;
         }
 
+        if (string.IsNullOrEmpty(eventSubscription.Id))
+        {
+            _logger.LogWarning("Cannot retrieve up-to-date Subscription for Event with ID '{eventId}' because no Subscription ID was included in the Event.", stripeEvent.Id);
+            return eventSubscription;
+        }
+
         var subscription = await _stripeFacade.GetSubscription(eventSubscription.Id, new SubscriptionGetOptions { Expand = expand });
 
         if (subscription == null)
@@ -132,7 +165,7 @@ public class StripeEventService : IStripeEventService
                 (await GetCharge(stripeEvent, true, customerExpansion))?.Customer?.Metadata,
 
             HandledStripeWebhook.UpcomingInvoice =>
-                (await GetInvoice(stripeEvent, true, customerExpansion))?.Customer?.Metadata,
+                await GetCustomerMetadataFromUpcomingInvoiceEvent(stripeEvent),
 
             HandledStripeWebhook.PaymentSucceeded or HandledStripeWebhook.PaymentFailed or HandledStripeWebhook.InvoiceCreated =>
                 (await GetInvoice(stripeEvent, true, customerExpansion))?.Customer?.Metadata,
@@ -154,6 +187,20 @@ public class StripeEventService : IStripeEventService
         var customerRegion = GetCustomerRegion(customerMetadata);
 
         return customerRegion == serverRegion;
+
+        /* In Stripe, when we receive an invoice.upcoming event, the event does not include an Invoice ID because
+           the invoice hasn't been created yet. Therefore, rather than retrieving the fresh Invoice with a 'customer'
+           expansion, we need to use the Customer ID on the event to retrieve the metadata. */
+        async Task<Dictionary<string, string>> GetCustomerMetadataFromUpcomingInvoiceEvent(Event localStripeEvent)
+        {
+            var invoice = await GetInvoice(localStripeEvent);
+
+            var customer = !string.IsNullOrEmpty(invoice.CustomerId)
+                ? await _stripeFacade.GetCustomer(invoice.CustomerId)
+                : null;
+
+            return customer?.Metadata;
+        }
     }
 
     private static T Extract<T>(Event stripeEvent)

src/Core/Repositories/IOrganizationRepository.cs

@@ -14,4 +14,5 @@ public interface IOrganizationRepository : IRepository<Organization, Guid>
     Task<Organization> GetByLicenseKeyAsync(string licenseKey);
     Task<SelfHostedOrganizationDetails> GetSelfHostedOrganizationDetailsById(Guid id);
     Task<ICollection<Organization>> SearchUnassignedToProviderAsync(string name, string ownerEmail, int skip, int take);
+    Task<IEnumerable<string>> GetOwnerEmailAddressesById(Guid organizationId);
 }

src/Core/Services/IMailService.cs

@@ -24,7 +24,17 @@ public interface IMailService
     Task SendOrganizationConfirmedEmailAsync(string organizationName, string email);
     Task SendOrganizationUserRemovedForPolicyTwoStepEmailAsync(string organizationName, string email);
     Task SendPasswordlessSignInAsync(string returnUrl, string token, string email);
-    Task SendInvoiceUpcomingAsync(string email, decimal amount, DateTime dueDate, List<string> items,
+    Task SendInvoiceUpcoming(
+        string email,
+        decimal amount,
+        DateTime dueDate,
+        List<string> items,
+        bool mentionInvoices);
+    Task SendInvoiceUpcoming(
+        IEnumerable<string> email,
+        decimal amount,
+        DateTime dueDate,
+        List<string> items,
         bool mentionInvoices);
     Task SendPaymentFailedAsync(string email, decimal amount, bool mentionInvoices);
     Task SendAddedCreditAsync(string email, decimal amount);

src/Core/Services/Implementations/HandlebarsMailService.cs

@@ -285,10 +285,21 @@ public class HandlebarsMailService : IMailService
         await _mailDeliveryService.SendEmailAsync(message);
     }
 
-    public async Task SendInvoiceUpcomingAsync(string email, decimal amount, DateTime dueDate,
-        List<string> items, bool mentionInvoices)
-    {
-        var message = CreateDefaultMessage("Your Subscription Will Renew Soon", email);
+    public async Task SendInvoiceUpcoming(
+        string email,
+        decimal amount,
+        DateTime dueDate,
+        List<string> items,
+        bool mentionInvoices) => await SendInvoiceUpcoming(new List<string> { email }, amount, dueDate, items, mentionInvoices);
+
+    public async Task SendInvoiceUpcoming(
+        IEnumerable<string> emails,
+        decimal amount,
+        DateTime dueDate,
+        List<string> items,
+        bool mentionInvoices)
+    {
+        var message = CreateDefaultMessage("Your Subscription Will Renew Soon", emails);
         var model = new InvoiceUpcomingViewModel
         {
             WebVaultUrl = _globalSettings.BaseServiceUri.VaultWithHash,

src/Core/Services/NoopImplementations/NoopMailService.cs

@@ -88,11 +88,19 @@ public class NoopMailService : IMailService
         return Task.FromResult(0);
     }
 
-    public Task SendInvoiceUpcomingAsync(string email, decimal amount, DateTime dueDate,
-        List<string> items, bool mentionInvoices)
-    {
-        return Task.FromResult(0);
-    }
+    public Task SendInvoiceUpcoming(
+        string email,
+        decimal amount,
+        DateTime dueDate,
+        List<string> items,
+        bool mentionInvoices) => Task.FromResult(0);
+
+    public Task SendInvoiceUpcoming(
+        IEnumerable<string> emails,
+        decimal amount,
+        DateTime dueDate,
+        List<string> items,
+        bool mentionInvoices) => Task.FromResult(0);
 
     public Task SendPaymentFailedAsync(string email, decimal amount, bool mentionInvoices)
     {

src/Infrastructure.Dapper/Repositories/OrganizationRepository.cs

@@ -149,4 +149,14 @@ public class OrganizationRepository : Repository<Organization, Guid>, IOrganizat
             return results.ToList();
         }
     }
+
+    public async Task<IEnumerable<string>> GetOwnerEmailAddressesById(Guid organizationId)
+    {
+        await using var connection = new SqlConnection(ConnectionString);
+
+        return await connection.QueryAsync<string>(
+            $"[{Schema}].[{Table}_ReadOwnerEmailAddressesById]",
+            new { OrganizationId = organizationId },
+            commandType: CommandType.StoredProcedure);
+    }
 }

src/Infrastructure.EntityFramework/Repositories/OrganizationRepository.cs

@@ -224,4 +224,24 @@ public class OrganizationRepository : Repository<Core.Entities.Organization, Org
             return selfHostedOrganization;
         }
     }
+
+    public async Task<IEnumerable<string>> GetOwnerEmailAddressesById(Guid organizationId)
+    {
+        using var scope = ServiceScopeFactory.CreateScope();
+
+        var dbContext = GetDatabaseContext(scope);
+
+        var query =
+            from u in dbContext.Users
+            join ou in dbContext.OrganizationUsers on u.Id equals ou.UserId
+            where
+                ou.OrganizationId == organizationId &&
+                ou.Type == OrganizationUserType.Owner &&
+                ou.Status == OrganizationUserStatusType.Confirmed
+            group u by u.Email
+            into grouped
+            select grouped.Key;
+
+        return await query.ToListAsync();
+    }
 }

test/Billing.Test/Services/StripeEventServiceTests.cs

@@ -3,6 +3,7 @@ using Bit.Billing.Services.Implementations;
 using Bit.Billing.Test.Utilities;
 using Bit.Core.Settings;
 using FluentAssertions;
+using Microsoft.Extensions.Logging;
 using NSubstitute;
 using Stripe;
 using Xunit;
@@ -21,7 +22,7 @@ public class StripeEventServiceTests
         globalSettings.BaseServiceUri = baseServiceUriSettings;
 
         _stripeFacade = Substitute.For<IStripeFacade>();
-        _stripeEventService = new StripeEventService(globalSettings, _stripeFacade);
+        _stripeEventService = new StripeEventService(globalSettings, Substitute.For<ILogger<StripeEventService>>(), _stripeFacade);
     }
 
     #region GetCharge

util/Migrator/DbScripts/2023-10-03_00_OrganizationReadOwnerEmailAddresses.sql

@@ -0,0 +1,17 @@
+CREATE OR ALTER PROCEDURE [dbo].[Organization_ReadOwnerEmailAddressesById]
+    @OrganizationId UNIQUEIDENTIFIER
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        [U].[Email]
+    FROM [User] AS [U]
+    INNER JOIN [OrganizationUser] AS [OU] ON [U].[Id] = [OU].[UserId]
+    WHERE
+        [OU].[OrganizationId] = @OrganizationId AND
+        [OU].[Type] = 0 AND -- Owner
+        [OU].[Status] = 2 -- Confirmed
+    GROUP BY [U].[Email]
+END
+GO