feat(connector): Fix FPX refunds for Fiuu (#7890)

crates/router/src/core/payments/helpers.rs

@@ -4818,6 +4818,12 @@ pub async fn get_additional_payment_data(
                     details: None,
                 },
             )),
+            domain::BankRedirectData::OnlineBankingFpx { issuer } => Ok(Some(
+                api_models::payments::AdditionalPaymentData::BankRedirect {
+                    bank_name: Some(issuer.to_owned()),
+                    details: None,
+                },
+            )),
             domain::BankRedirectData::Ideal { bank_name, .. } => Ok(Some(
                 api_models::payments::AdditionalPaymentData::BankRedirect {
                     bank_name: bank_name.to_owned(),

crates/router/src/core/relay/utils.rs

@@ -111,6 +111,7 @@ pub async fn construct_relay_refund_router_data<F>(
             merchant_account_id: None,
             merchant_config_currency: None,
             capture_method: None,
+            additional_payment_method_data: None,
         },
 
         response: Err(ErrorResponse::default()),

crates/router/src/core/utils.rs

@@ -349,6 +349,7 @@ pub async fn construct_refund_router_data<'a, F>(
             merchant_config_currency,
             refund_connector_metadata: refund.metadata.clone(),
             capture_method: Some(capture_method),
+            additional_payment_method_data: None,
         },
 
         response: Ok(types::RefundsResponseData {
@@ -497,6 +498,17 @@ pub async fn construct_refund_router_data<'a, F>(
         .and_then(|braintree| braintree.merchant_account_id.clone());
     let merchant_config_currency =
         braintree_metadata.and_then(|braintree| braintree.merchant_config_currency);
+    let additional_payment_method_data: Option<api_models::payments::AdditionalPaymentData> =
+        payment_attempt
+            .payment_method_data
+            .clone()
+            .and_then(|value| match serde_json::from_value(value) {
+                Ok(data) => Some(data),
+                Err(e) => {
+                    router_env::logger::error!("Failed to deserialize payment_method_data: {}", e);
+                    None
+                }
+            });
 
     let router_data = types::RouterData {
         flow: PhantomData,
@@ -540,6 +552,7 @@ pub async fn construct_refund_router_data<'a, F>(
             merchant_account_id,
             merchant_config_currency,
             capture_method,
+            additional_payment_method_data,
         },
 
         response: Ok(types::RefundsResponseData {