refactor(core): accept customer data in customer object (#1447)

Co-authored-by: Abhishek Marrivagu <68317979+Abhicodes-crypto@users.noreply.github.com>

crates/api_models/src/payments.rs

@@ -45,6 +45,28 @@ pub struct BankCodeResponse {
     pub eligible_connectors: Vec<String>,
 }
 
+#[derive(Default, Debug, serde::Deserialize, serde::Serialize, Clone, ToSchema)]
+pub struct CustomerDetails {
+    /// The identifier for the customer.
+    pub id: String,
+
+    /// The customer's name
+    #[schema(max_length = 255, value_type = Option<String>, example = "John Doe")]
+    pub name: Option<Secret<String>>,
+
+    /// The customer's email address
+    #[schema(max_length = 255, value_type = Option<String>, example = "johntest@test.com")]
+    pub email: Option<Email>,
+
+    /// The customer's phone number
+    #[schema(value_type = Option<String>, max_length = 10, example = "3141592653")]
+    pub phone: Option<Secret<String>>,
+
+    /// The country code for the customer's phone number
+    #[schema(max_length = 2, example = "+1")]
+    pub phone_country_code: Option<String>,
+}
+
 #[derive(
     Default,
     Debug,
@@ -114,23 +136,33 @@ pub struct PaymentsRequest {
     #[schema(default = false, example = true)]
     pub confirm: Option<bool>,
 
-    /// The identifier for the customer object. If not provided the customer ID will be autogenerated.
+    /// The details of a customer for this payment
+    /// This will create the customer if `customer.id` does not exist
+    /// If customer id already exists, it will update the details of the customer
+    pub customer: Option<CustomerDetails>,
+
+    /// The identifier for the customer object.
+    /// This field will be deprecated soon, use the customer object instead
     #[schema(max_length = 255, example = "cus_y3oqhf46pyzuxjbcn2giaqnb44")]
     pub customer_id: Option<String>,
 
-    /// description: The customer's email address
+    /// The customer's email address
+    /// This field will be deprecated soon, use the customer object instead
     #[schema(max_length = 255, value_type = Option<String>, example = "johntest@test.com")]
     pub email: Option<Email>,
 
     /// description: The customer's name
+    /// This field will be deprecated soon, use the customer object instead
     #[schema(value_type = Option<String>, max_length = 255, example = "John Test")]
     pub name: Option<Secret<String>>,
 
     /// The customer's phone number
+    /// This field will be deprecated soon, use the customer object instead
     #[schema(value_type = Option<String>, max_length = 255, example = "3141592653")]
     pub phone: Option<Secret<String>>,
 
     /// The country code for the customer phone number
+    /// This field will be deprecated soon, use the customer object instead
     #[schema(max_length = 255, example = "+1")]
     pub phone_country_code: Option<String>,
 
@@ -303,27 +335,6 @@ pub struct VerifyRequest {
     pub merchant_connector_details: Option<admin::MerchantConnectorDetailsWrap>,
 }
 
-impl From<PaymentsRequest> for VerifyRequest {
-    fn from(item: PaymentsRequest) -> Self {
-        Self {
-            client_secret: item.client_secret,
-            merchant_id: item.merchant_id,
-            customer_id: item.customer_id,
-            email: item.email,
-            name: item.name,
-            phone: item.phone,
-            phone_country_code: item.phone_country_code,
-            payment_method: item.payment_method,
-            payment_method_data: item.payment_method_data,
-            payment_token: item.payment_token,
-            mandate_data: item.mandate_data,
-            setup_future_usage: item.setup_future_usage,
-            off_session: item.off_session,
-            merchant_connector_details: item.merchant_connector_details,
-        }
-    }
-}
-
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum MandateTxnType {
@@ -1478,7 +1489,12 @@ impl From<&PaymentsRequest> for MandateValidationFields {
         Self {
             mandate_id: req.mandate_id.clone(),
             confirm: req.confirm,
-            customer_id: req.customer_id.clone(),
+            customer_id: req
+                .customer
+                .as_ref()
+                .map(|customer_details| &customer_details.id)
+                .or(req.customer_id.as_ref())
+                .map(ToOwned::to_owned),
             mandate_data: req.mandate_data.clone(),
             setup_future_usage: req.setup_future_usage,
             off_session: req.off_session,