[AC-1942] Add endpoint to get provider invoices (#4158)

* Added endpoint to get provider invoices

* Added missing properties of invoice

* Run dotnet format'

src/Api/Billing/Controllers/ProviderBillingController.cs

@@ -25,6 +25,23 @@ public class ProviderBillingController(
     IStripeAdapter stripeAdapter,
     ISubscriberService subscriberService) : Controller
 {
+    [HttpGet("invoices")]
+    public async Task<IResult> GetInvoicesAsync([FromRoute] Guid providerId)
+    {
+        var (provider, result) = await GetAuthorizedBillableProviderOrResultAsync(providerId);
+
+        if (provider == null)
+        {
+            return result;
+        }
+
+        var invoices = await subscriberService.GetInvoices(provider);
+
+        var response = InvoicesResponse.From(invoices);
+
+        return TypedResults.Ok(response);
+    }
+
     [HttpGet("payment-information")]
     public async Task<IResult> GetPaymentInformationAsync([FromRoute] Guid providerId)
     {

src/Api/Billing/Models/Responses/InvoicesResponse.cs

@@ -0,0 +1,30 @@
+using Stripe;
+
+namespace Bit.Api.Billing.Models.Responses;
+
+public record InvoicesResponse(
+    List<InvoiceDTO> Invoices)
+{
+    public static InvoicesResponse From(IEnumerable<Invoice> invoices) => new(
+        invoices
+            .Where(i => i.Status is "open" or "paid" or "uncollectible")
+            .OrderByDescending(i => i.Created)
+            .Select(InvoiceDTO.From).ToList());
+}
+
+public record InvoiceDTO(
+    DateTime Date,
+    string Number,
+    decimal Total,
+    string Status,
+    string Url,
+    string PdfUrl)
+{
+    public static InvoiceDTO From(Invoice invoice) => new(
+        invoice.Created,
+        invoice.Number,
+        invoice.Total / 100M,
+        invoice.Status,
+        invoice.HostedInvoiceUrl,
+        invoice.InvoicePdf);
+}