feat(compatibility): add refund retrieve endpoint which accepts gateway creds (#958)

Cargo.lock

@@ -3846,7 +3846,7 @@ checksum = "bcec881020c684085e55a25f7fd888954d56609ef363479dc5a1305eb0d40cab"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.11",
+ "syn 2.0.15",
 ]
 
 [[package]]

crates/router/src/compatibility/stripe/app.rs

@@ -40,6 +40,7 @@ impl Refunds {
             .service(refund_create)
             .service(refund_retrieve)
             .service(refund_update)
+            .service(refund_retrieve_with_gateway_creds)
     }
 }
 

crates/router/src/compatibility/stripe/refunds.rs

@@ -49,6 +49,47 @@ pub async fn refund_create(
     .await
 }
 
+#[instrument(skip_all)]
+#[post("/sync")]
+pub async fn refund_retrieve_with_gateway_creds(
+    state: web::Data<routes::AppState>,
+    qs_config: web::Data<serde_qs::Config>,
+    req: HttpRequest,
+    form_payload: web::Bytes,
+) -> HttpResponse {
+    let refund_request = match qs_config
+        .deserialize_bytes(&form_payload)
+        .map_err(|err| report!(errors::StripeErrorCode::from(err)))
+    {
+        Ok(payload) => payload,
+        Err(err) => return api::log_and_return_error_response(err),
+    };
+    wrap::compatibility_api_wrap::<
+        _,
+        _,
+        _,
+        _,
+        _,
+        _,
+        types::StripeRefundResponse,
+        errors::StripeErrorCode,
+    >(
+        state.get_ref(),
+        &req,
+        refund_request,
+        |state, merchant_account, refund_request| {
+            refunds::refund_response_wrapper(
+                state,
+                merchant_account,
+                refund_request,
+                refunds::refund_retrieve_core,
+            )
+        },
+        &auth::ApiKeyAuth,
+    )
+    .await
+}
+
 #[instrument(skip_all)]
 #[get("/{refund_id}")]
 pub async fn refund_retrieve(