[AC-2361] Refactor StripeController (#4136)

* Changes ensures provider_id is handled and stored for Braintree.

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

* refactoring of the stripeController class

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

* Move the constant variables to utility class

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

* Adding comments to the methods

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

* Add more comments to describe the method

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

* Add the providerId changes

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

* Add the missing providerId

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

* Fix the IsSponsoredSubscription bug

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

---------

Signed-off-by: Cy Okeke <cokeke@bitwarden.com>

src/Billing/Services/Implementations/InvoiceCreatedHandler.cs

@@ -0,0 +1,35 @@
+using Event = Stripe.Event;
+
+namespace Bit.Billing.Services.Implementations;
+
+public class InvoiceCreatedHandler : IInvoiceCreatedHandler
+{
+    private readonly IStripeEventService _stripeEventService;
+    private readonly IStripeEventUtilityService _stripeEventUtilityService;
+    private readonly IProviderEventService _providerEventService;
+
+    public InvoiceCreatedHandler(
+        IStripeEventService stripeEventService,
+        IStripeEventUtilityService stripeEventUtilityService,
+        IProviderEventService providerEventService)
+    {
+        _stripeEventService = stripeEventService;
+        _stripeEventUtilityService = stripeEventUtilityService;
+        _providerEventService = providerEventService;
+    }
+
+    /// <summary>
+    /// Handles the <see cref="HandledStripeWebhook.InvoiceCreated"/> event type from Stripe.
+    /// </summary>
+    /// <param name="parsedEvent"></param>
+    public async Task HandleAsync(Event parsedEvent)
+    {
+        var invoice = await _stripeEventService.GetInvoice(parsedEvent, true);
+        if (_stripeEventUtilityService.ShouldAttemptToPayInvoice(invoice))
+        {
+            await _stripeEventUtilityService.AttemptToPayInvoiceAsync(invoice);
+        }
+
+        await _providerEventService.TryRecordInvoiceLineItems(parsedEvent);
+    }
+}