feat(connector): [Bluesnap] Add support for ApplePay (#1178)

crates/router/src/connector/bluesnap.rs

@@ -494,7 +494,83 @@ impl api::PaymentSession for Bluesnap {}
 impl ConnectorIntegration<api::Session, types::PaymentsSessionData, types::PaymentsResponseData>
     for Bluesnap
 {
-    //TODO: implement sessions flow
+    fn get_headers(
+        &self,
+        req: &types::PaymentsSessionRouterData,
+        connectors: &settings::Connectors,
+    ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
+        self.build_headers(req, connectors)
+    }
+
+    fn get_content_type(&self) -> &'static str {
+        self.common_get_content_type()
+    }
+
+    fn get_url(
+        &self,
+        _req: &types::PaymentsSessionRouterData,
+        connectors: &settings::Connectors,
+    ) -> CustomResult<String, errors::ConnectorError> {
+        Ok(format!(
+            "{}{}",
+            self.base_url(connectors),
+            "services/2/wallets"
+        ))
+    }
+
+    fn get_request_body(
+        &self,
+        req: &types::PaymentsSessionRouterData,
+    ) -> CustomResult<Option<String>, errors::ConnectorError> {
+        let connector_req = bluesnap::BluesnapCreateWalletToken::try_from(req)?;
+        let bluesnap_req =
+            utils::Encode::<bluesnap::BluesnapCreateWalletToken>::encode_to_string_of_json(
+                &connector_req,
+            )
+            .change_context(errors::ConnectorError::RequestEncodingFailed)?;
+        Ok(Some(bluesnap_req))
+    }
+
+    fn build_request(
+        &self,
+        req: &types::PaymentsSessionRouterData,
+        connectors: &settings::Connectors,
+    ) -> CustomResult<Option<services::Request>, errors::ConnectorError> {
+        Ok(Some(
+            services::RequestBuilder::new()
+                .method(services::Method::Post)
+                .url(&types::PaymentsSessionType::get_url(self, req, connectors)?)
+                .attach_default_headers()
+                .headers(types::PaymentsSessionType::get_headers(
+                    self, req, connectors,
+                )?)
+                .body(types::PaymentsSessionType::get_request_body(self, req)?)
+                .build(),
+        ))
+    }
+
+    fn handle_response(
+        &self,
+        data: &types::PaymentsSessionRouterData,
+        res: Response,
+    ) -> CustomResult<types::PaymentsSessionRouterData, errors::ConnectorError> {
+        let response: bluesnap::BluesnapWalletTokenResponse = res
+            .response
+            .parse_struct("BluesnapWalletTokenResponse")
+            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;
+        types::RouterData::try_from(types::ResponseRouterData {
+            response,
+            data: data.clone(),
+            http_code: res.status_code,
+        })
+    }
+
+    fn get_error_response(
+        &self,
+        res: Response,
+    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
+        self.build_error_response(res)
+    }
 }
 
 impl api::PaymentAuthorize for Bluesnap {}

crates/router/src/connector/bluesnap/transformers.rs

@@ -1,18 +1,20 @@
+use api_models::enums as api_enums;
 use base64::Engine;
 use common_utils::{
-    ext_traits::{StringExt, ValueExt},
+    ext_traits::{ByteSliceExt, StringExt, ValueExt},
     pii::Email,
 };
-use error_stack::ResultExt;
+use error_stack::{IntoReport, ResultExt};
+use masking::ExposeInterface;
 use serde::{Deserialize, Serialize};
 
 use crate::{
-    connector::utils,
+    connector::utils::{self, RouterData},
     consts,
     core::errors,
     pii::Secret,
     types::{self, api, storage::enums, transformers::ForeignTryFrom},
-    utils::Encode,
+    utils::{Encode, OptionExt},
 };
 
 #[derive(Debug, Serialize, PartialEq)]
@@ -26,6 +28,15 @@ pub struct BluesnapPaymentsRequest {
     three_d_secure: Option<BluesnapThreeDSecureInfo>,
 }
 
+#[derive(Debug, Serialize, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct BluesnapCreateWalletToken {
+    wallet_type: String,
+    validation_url: Secret<String>,
+    domain_name: String,
+    display_name: Option<String>,
+}
+
 #[derive(Debug, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct BluesnapThreeDSecureInfo {
@@ -74,6 +85,56 @@ pub enum BluesnapWalletTypes {
     ApplePay,
 }
 
+#[derive(Debug, Serialize, Eq, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct EncodedPaymentToken {
+    billing_contact: BillingDetails,
+    token: ApplepayPaymentData,
+}
+
+#[derive(Debug, Serialize, Eq, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct BillingDetails {
+    country_code: Option<api_enums::CountryAlpha2>,
+    address_lines: Option<Vec<Secret<String>>>,
+    family_name: Option<Secret<String>>,
+    given_name: Option<Secret<String>>,
+    postal_code: Option<Secret<String>>,
+}
+
+#[derive(Debug, Serialize, Deserialize, Eq, PartialEq, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct ApplepayPaymentData {
+    payment_data: ApplePayEncodedPaymentData,
+    payment_method: ApplepayPaymentMethod,
+    transaction_identifier: String,
+}
+
+#[derive(Debug, Serialize, Deserialize, Eq, PartialEq, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct ApplepayPaymentMethod {
+    display_name: String,
+    network: String,
+    #[serde(rename = "type")]
+    pm_type: String,
+}
+
+#[derive(Debug, Serialize, Deserialize, Eq, PartialEq, Clone)]
+pub struct ApplePayEncodedPaymentData {
+    data: String,
+    header: Option<ApplepayHeader>,
+    signature: String,
+    version: String,
+}
+
+#[derive(Debug, Serialize, Deserialize, Eq, PartialEq, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct ApplepayHeader {
+    ephemeral_public_key: Secret<String>,
+    public_key_hash: Secret<String>,
+    transaction_id: Secret<String>,
+}
+
 impl TryFrom<&types::PaymentsAuthorizeRouterData> for BluesnapPaymentsRequest {
     type Error = error_stack::Report<errors::ConnectorError>;
     fn try_from(item: &types::PaymentsAuthorizeRouterData) -> Result<Self, Self::Error> {
@@ -104,13 +165,64 @@ impl TryFrom<&types::PaymentsAuthorizeRouterData> for BluesnapPaymentsRequest {
                     }))
                 }
                 api_models::payments::WalletData::ApplePay(payment_method_data) => {
-                    let apple_pay_object =
-                        Encode::<BluesnapApplePayObject>::encode_to_string_of_json(
-                            &BluesnapApplePayObject {
-                                token: payment_method_data,
+                    let apple_pay_payment_data = consts::BASE64_ENGINE
+                        .decode(payment_method_data.payment_data)
+                        .into_report()
+                        .change_context(errors::ConnectorError::ParsingFailed)?;
+
+                    let apple_pay_payment_data: ApplePayEncodedPaymentData = apple_pay_payment_data
+                        [..]
+                        .parse_struct("ApplePayEncodedPaymentData")
+                        .change_context(errors::ConnectorError::ParsingFailed)?;
+
+                    let billing = item
+                        .address
+                        .billing
+                        .to_owned()
+                        .get_required_value("billing")
+                        .change_context(errors::ConnectorError::MissingRequiredField {
+                            field_name: "billing",
+                        })?;
+
+                    let billing_address = billing
+                        .address
+                        .get_required_value("billing_address")
+                        .change_context(errors::ConnectorError::MissingRequiredField {
+                            field_name: "billing",
+                        })?;
+
+                    let mut address = Vec::new();
+                    if let Some(add) = billing_address.line1.to_owned() {
+                        address.push(add)
+                    }
+                    if let Some(add) = billing_address.line2.to_owned() {
+                        address.push(add)
+                    }
+                    if let Some(add) = billing_address.line3.to_owned() {
+                        address.push(add)
+                    }
+
+                    let apple_pay_object = Encode::<EncodedPaymentToken>::encode_to_string_of_json(
+                        &EncodedPaymentToken {
+                            token: ApplepayPaymentData {
+                                payment_data: apple_pay_payment_data,
+                                payment_method: payment_method_data
+                                    .payment_method
+                                    .to_owned()
+                                    .into(),
+                                transaction_identifier: payment_method_data.transaction_identifier,
                             },
-                        )
-                        .change_context(errors::ConnectorError::RequestEncodingFailed)?;
+                            billing_contact: BillingDetails {
+                                country_code: billing_address.country,
+                                address_lines: Some(address),
+                                family_name: billing_address.last_name.to_owned(),
+                                given_name: billing_address.first_name.to_owned(),
+                                postal_code: billing_address.zip,
+                            },
+                        },
+                    )
+                    .change_context(errors::ConnectorError::RequestEncodingFailed)?;
+
                     Ok(PaymentMethodDetails::Wallet(BluesnapWallet {
                         wallet_type: BluesnapWalletTypes::ApplePay,
                         encoded_payment_token: consts::BASE64_ENGINE.encode(apple_pay_object),
@@ -134,6 +246,94 @@ impl TryFrom<&types::PaymentsAuthorizeRouterData> for BluesnapPaymentsRequest {
     }
 }
 
+impl From<api_models::payments::ApplepayPaymentMethod> for ApplepayPaymentMethod {
+    fn from(item: api_models::payments::ApplepayPaymentMethod) -> Self {
+        Self {
+            display_name: item.display_name,
+            network: item.network,
+            pm_type: item.pm_type,
+        }
+    }
+}
+
+impl TryFrom<&types::PaymentsSessionRouterData> for BluesnapCreateWalletToken {
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(item: &types::PaymentsSessionRouterData) -> Result<Self, Self::Error> {
+        let apple_pay_metadata = item.get_connector_meta()?.expose();
+        let applepay_metadata = apple_pay_metadata
+            .parse_value::<api_models::payments::ApplepaySessionTokenData>(
+                "ApplepaySessionTokenData",
+            )
+            .change_context(errors::ConnectorError::ParsingFailed)?;
+        Ok(Self {
+            wallet_type: "APPLE_PAY".to_string(),
+            validation_url: consts::APPLEPAY_VALIDATION_URL.to_string().into(),
+            domain_name: applepay_metadata.data.session_token_data.initiative_context,
+            display_name: Some(applepay_metadata.data.session_token_data.display_name),
+        })
+    }
+}
+
+impl TryFrom<types::PaymentsSessionResponseRouterData<BluesnapWalletTokenResponse>>
+    for types::PaymentsSessionRouterData
+{
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(
+        item: types::PaymentsSessionResponseRouterData<BluesnapWalletTokenResponse>,
+    ) -> Result<Self, Self::Error> {
+        let response = &item.response;
+
+        let wallet_token = consts::BASE64_ENGINE
+            .decode(response.wallet_token.clone().expose())
+            .into_report()
+            .change_context(errors::ConnectorError::ParsingFailed)?;
+
+        let session_response: api_models::payments::ApplePaySessionResponse = wallet_token[..]
+            .parse_struct("ApplePayResponse")
+            .change_context(errors::ConnectorError::ParsingFailed)?;
+
+        let metadata = item.data.get_connector_meta()?.expose();
+        let applepay_metadata = metadata
+            .parse_value::<api_models::payments::ApplepaySessionTokenData>(
+                "ApplepaySessionTokenData",
+            )
+            .change_context(errors::ConnectorError::ParsingFailed)?;
+
+        Ok(Self {
+            response: Ok(types::PaymentsResponseData::SessionResponse {
+                session_token: types::api::SessionToken::ApplePay(Box::new(
+                    api_models::payments::ApplepaySessionTokenResponse {
+                        session_token_data: session_response,
+                        payment_request_data: api_models::payments::ApplePayPaymentRequest {
+                            country_code: item.data.get_billing_country()?,
+                            currency_code: item.data.request.currency.to_string(),
+                            total: api_models::payments::AmountInfo {
+                                label: applepay_metadata.data.payment_request_data.label,
+                                total_type: "final".to_string(),
+                                amount: item.data.request.amount.to_string(),
+                            },
+                            merchant_capabilities: applepay_metadata
+                                .data
+                                .payment_request_data
+                                .merchant_capabilities,
+                            supported_networks: applepay_metadata
+                                .data
+                                .payment_request_data
+                                .supported_networks,
+                            merchant_identifier: applepay_metadata
+                                .data
+                                .session_token_data
+                                .merchant_identifier,
+                        },
+                        connector: "bluesnap".to_string(),
+                    },
+                )),
+            }),
+            ..item.data
+        })
+    }
+}
+
 impl TryFrom<&types::PaymentsCompleteAuthorizeRouterData> for BluesnapPaymentsRequest {
     type Error = error_stack::Report<errors::ConnectorError>;
     fn try_from(item: &types::PaymentsCompleteAuthorizeRouterData) -> Result<Self, Self::Error> {
@@ -374,6 +574,13 @@ pub struct BluesnapPaymentsResponse {
     card_transaction_type: BluesnapTxnType,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct BluesnapWalletTokenResponse {
+    wallet_type: String,
+    wallet_token: Secret<String>,
+}
+
 #[derive(Default, Debug, Clone, Serialize, Deserialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Refund {

crates/router/src/consts.rs

@@ -27,3 +27,7 @@ pub(crate) const BASE64_ENGINE_URL_SAFE: base64::engine::GeneralPurpose =
 
 pub(crate) const API_KEY_LENGTH: usize = 64;
 pub(crate) const PUB_SUB_CHANNEL: &str = "hyperswitch_invalidate";
+
+// Apple Pay validation url
+pub(crate) const APPLEPAY_VALIDATION_URL: &str =
+    "https://apple-pay-gateway-cert.apple.com/paymentservices/startSession";