feat(klarna): wallet payment through klarna (#182)

crates/api_models/src/payments.rs

@@ -14,6 +14,11 @@ pub enum PaymentOp {
     Confirm,
 }
 
+#[derive(Default, Debug, serde::Deserialize, serde::Serialize, Clone)]
+pub struct Metadata {
+    pub order_details: OrderDetails,
+}
+
 #[derive(Default, Debug, serde::Deserialize, serde::Serialize, Clone)]
 #[serde(deny_unknown_fields)]
 pub struct PaymentsRequest {
@@ -210,10 +215,30 @@ pub struct CCard {
     pub card_cvc: Secret<String>,
 }
 
-#[derive(Default, Eq, PartialEq, Clone, Debug, serde::Deserialize, serde::Serialize)]
-pub struct PayLaterData {
-    pub billing_email: String,
-    pub country: String,
+#[derive(Eq, PartialEq, Clone, Debug, serde::Deserialize, serde::Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum KlarnaRedirectIssuer {
+    Stripe,
+}
+
+#[derive(Eq, PartialEq, Clone, Debug, serde::Deserialize, serde::Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum KlarnaSdkIssuer {
+    Klarna,
+}
+
+#[derive(Eq, PartialEq, Clone, Debug, serde::Deserialize, serde::Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum PayLaterData {
+    KlarnaRedirect {
+        issuer_name: KlarnaRedirectIssuer,
+        billing_email: String,
+        billing_country: String,
+    },
+    KlarnaSdk {
+        issuer_name: KlarnaSdkIssuer,
+        token: String,
+    },
 }
 
 #[derive(Debug, Clone, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
@@ -704,7 +729,22 @@ pub struct PaymentsRetrieveRequest {
     pub connector: Option<String>,
 }
 
-#[derive(Default, Debug, serde::Deserialize, Clone)]
+#[derive(Debug, serde::Deserialize, Clone)]
+#[serde(rename_all = "snake_case")]
+pub enum SupportedWallets {
+    Paypal,
+    ApplePay,
+    Klarna,
+    Gpay,
+}
+
+#[derive(Debug, Default, serde::Deserialize, serde::Serialize, Clone)]
+pub struct OrderDetails {
+    pub product_name: String,
+    pub quantity: u16,
+}
+
+#[derive(Debug, serde::Deserialize, serde::Serialize, Clone)]
 pub struct PaymentsSessionRequest {
     pub payment_id: String,
     pub client_secret: String,