feat(pm_auth): pm_auth service migration (#3047)

Co-authored-by: Sarthak Soni <76486416+Sarthak1799@users.noreply.github.com>
Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>
Co-authored-by: Sarthak Soni <sarthak.soni@juspay.in>

crates/api_models/src/enums.rs

@@ -1,3 +1,5 @@
+use std::str::FromStr;
+
 pub use common_enums::*;
 use utoipa::ToSchema;
 
@@ -500,3 +502,26 @@ pub enum LockerChoice {
     Basilisk,
     Tartarus,
 }
+
+#[derive(
+    Clone,
+    Copy,
+    Debug,
+    Eq,
+    PartialEq,
+    serde::Serialize,
+    serde::Deserialize,
+    strum::Display,
+    strum::EnumString,
+    frunk::LabelledGeneric,
+    ToSchema,
+)]
+#[serde(rename_all = "snake_case")]
+#[strum(serialize_all = "snake_case")]
+pub enum PmAuthConnectors {
+    Plaid,
+}
+
+pub fn convert_pm_auth_connector(connector_name: &str) -> Option<PmAuthConnectors> {
+    PmAuthConnectors::from_str(connector_name).ok()
+}

crates/api_models/src/lib.rs

@@ -23,6 +23,7 @@ pub mod payment_methods;
 pub mod payments;
 #[cfg(feature = "payouts")]
 pub mod payouts;
+pub mod pm_auth;
 pub mod refunds;
 pub mod routing;
 pub mod surcharge_decision_configs;

crates/api_models/src/pm_auth.rs

@@ -0,0 +1,57 @@
+use common_enums::{PaymentMethod, PaymentMethodType};
+use common_utils::{
+    events::{ApiEventMetric, ApiEventsType},
+    impl_misc_api_event_type,
+};
+
+#[derive(Debug, Clone, serde::Deserialize, serde::Serialize)]
+#[serde(rename_all = "snake_case")]
+pub struct LinkTokenCreateRequest {
+    pub language: Option<String>, // optional language field to be passed
+    pub client_secret: Option<String>, // client secret to be passed in req body
+    pub payment_id: String, // payment_id to be passed in req body for redis pm_auth connector name fetch
+    pub payment_method: PaymentMethod, // payment_method to be used for filtering pm_auth connector
+    pub payment_method_type: PaymentMethodType, // payment_method_type to be used for filtering pm_auth connector
+}
+
+#[derive(Debug, Clone, serde::Serialize)]
+pub struct LinkTokenCreateResponse {
+    pub link_token: String, // link_token received in response
+    pub connector: String,  // pm_auth connector name in response
+}
+
+#[derive(Debug, Clone, serde::Deserialize, serde::Serialize)]
+#[serde(rename_all = "snake_case")]
+
+pub struct ExchangeTokenCreateRequest {
+    pub public_token: String,
+    pub client_secret: Option<String>,
+    pub payment_id: String,
+    pub payment_method: PaymentMethod,
+    pub payment_method_type: PaymentMethodType,
+}
+
+#[derive(Debug, Clone, serde::Serialize)]
+pub struct ExchangeTokenCreateResponse {
+    pub access_token: String,
+}
+
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct PaymentMethodAuthConfig {
+    pub enabled_payment_methods: Vec<PaymentMethodAuthConnectorChoice>,
+}
+
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct PaymentMethodAuthConnectorChoice {
+    pub payment_method: PaymentMethod,
+    pub payment_method_type: PaymentMethodType,
+    pub connector_name: String,
+    pub mca_id: String,
+}
+
+impl_misc_api_event_type!(
+    LinkTokenCreateRequest,
+    LinkTokenCreateResponse,
+    ExchangeTokenCreateRequest,
+    ExchangeTokenCreateResponse
+);