feat(connector): [Paypal] implement vaulting for paypal wallet and ca…

…rds while purchasing (#5323)

Co-authored-by: swangi-kumari <[email protected]>

crates/hyperswitch_domain_models/src/router_request_types.rs

@@ -88,6 +88,8 @@ pub struct PaymentsPostSessionTokensData {
     /// In case the connector supports only one reference id, Hyperswitch's Payment ID will be sent as reference.
     pub merchant_order_reference_id: Option<String>,
     pub shipping_cost: Option<MinorUnit>,
+    pub setup_future_usage: Option<storage_enums::FutureUsage>,
+    pub router_return_url: Option<String>,
 }
 
 #[derive(Debug, Clone, PartialEq)]

crates/router/src/connector/paypal.rs

@@ -17,7 +17,8 @@ use transformers as paypal;
 
 use self::transformers::{auth_headers, PaypalAuthResponse, PaypalMeta, PaypalWebhookEventType};
 use super::utils::{
-    ConnectorErrorType, PaymentsAuthorizeRequestData, PaymentsCompleteAuthorizeRequestData,
+    ConnectorErrorType, PaymentMethodDataType, PaymentsAuthorizeRequestData,
+    PaymentsCompleteAuthorizeRequestData,
 };
 use crate::{
     configs::settings,
@@ -332,6 +333,18 @@ impl ConnectorValidation for Paypal {
             ),
         }
     }
+    fn validate_mandate_payment(
+        &self,
+        pm_type: Option<types::storage::enums::PaymentMethodType>,
+        pm_data: domain::PaymentMethodData,
+    ) -> CustomResult<(), errors::ConnectorError> {
+        let mandate_supported_pmd = std::collections::HashSet::from([
+            PaymentMethodDataType::Card,
+            PaymentMethodDataType::PaypalRedirect,
+            PaymentMethodDataType::PaypalSdk,
+        ]);
+        connector_utils::is_mandate_supported(pm_data, pm_type, mandate_supported_pmd, self.id())
+    }
 }
 
 impl