refactor(connector): [BraintreeGraphQl] Enhance currency Mapping with ConnectorCurrencyCommon Trait (#2143)

connector-template/mod.rs

@@ -70,6 +70,13 @@ impl ConnectorCommon for {{project-name | downcase | pascal_case}} {
         "{{project-name | downcase}}"
     }
 
+    fn get_currency_unit(&self) -> api::CurrencyUnit {
+        todo!()
+    //    TODO! Check connector documentation, on which unit they are processing the currency. 
+    //    If the connector accepts amount in lower unit ( i.e cents for USD) then return api::CurrencyUnit::Minor, 
+    //    if connector accepts amount in base unit (i.e dollars for USD) then return api::CurrencyUnit::Base
+    }
+
     fn common_get_content_type(&self) -> &'static str {
         "application/json"
     }
@@ -150,7 +157,14 @@ impl
     }
 
     fn get_request_body(&self, req: &types::PaymentsAuthorizeRouterData) -> CustomResult<Option<types::RequestBody>, errors::ConnectorError> {
-        let req_obj = {{project-name | downcase}}::{{project-name | downcase | pascal_case}}PaymentsRequest::try_from(req)?;
+        let connector_router_data =
+            {{project-name | downcase}}::{{project-name | downcase | pascal_case}}RouterData::try_from((
+                &self.get_currency_unit(),
+                req.request.currency,
+                req.request.amount,
+                req,
+            ))?;
+        let req_obj = {{project-name | downcase}}::{{project-name | downcase | pascal_case}}PaymentsRequest::try_from(&connector_router_data)?;
         let {{project-name | downcase}}_req = types::RequestBody::log_and_get_request_body(&req_obj, utils::Encode::<{{project-name | downcase}}::{{project-name | downcase | pascal_case}}PaymentsRequest>::encode_to_string_of_json)
             .change_context(errors::ConnectorError::RequestEncodingFailed)?;
         Ok(Some({{project-name | downcase}}_req))
@@ -361,7 +375,14 @@ impl
     }
 
     fn get_request_body(&self, req: &types::RefundsRouterData<api::Execute>) -> CustomResult<Option<types::RequestBody>, errors::ConnectorError> {
-        let req_obj = {{project-name | downcase}}::{{project-name | downcase | pascal_case}}RefundRequest::try_from(req)?;
+        let connector_router_data =
+            {{project-name | downcase}}::{{project-name | downcase | pascal_case}}RouterData::try_from((
+                &self.get_currency_unit(),
+                req.request.currency,
+                req.request.refund_amount,
+                req,
+            ))?;
+        let req_obj = {{project-name | downcase}}::{{project-name | downcase | pascal_case}}RefundRequest::try_from(&connector_router_data)?;
         let {{project-name | downcase}}_req = types::RequestBody::log_and_get_request_body(&req_obj, utils::Encode::<{{project-name | downcase}}::{{project-name | downcase | pascal_case}}RefundRequest>::encode_to_string_of_json)
             .change_context(errors::ConnectorError::RequestEncodingFailed)?;
         Ok(Some({{project-name | downcase}}_req))

connector-template/transformers.rs

@@ -1,6 +1,37 @@
 use serde::{Deserialize, Serialize};
 use masking::Secret;
-use crate::{connector::utils::PaymentsAuthorizeRequestData,core::errors,types::{self,api, storage::enums}};
+use crate::{connector::utils::{PaymentsAuthorizeRequestData},core::errors,types::{self,api, storage::enums}};
+
+//TODO: Fill the struct with respective fields
+pub struct {{project-name | downcase | pascal_case}}RouterData<T> {
+    pub amount: i64, // The type of amount that a connector accepts, for example, String, i64, f64, etc.
+    pub router_data: T,
+}
+
+impl<T>
+    TryFrom<(
+        &types::api::CurrencyUnit,
+        types::storage::enums::Currency,
+        i64,
+        T,
+    )> for {{project-name | downcase | pascal_case}}RouterData<T>
+{
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(
+        (_currency_unit, _currency, amount, item): (
+            &types::api::CurrencyUnit,
+            types::storage::enums::Currency,
+            i64,
+            T,
+        ),
+    ) -> Result<Self, Self::Error> {
+         //Todo :  use utils to convert the amount to the type of amount that a connector accepts
+        Ok(Self {
+            amount,
+            router_data: item,
+        })
+    }
+}
 
 //TODO: Fill the struct with respective fields
 #[derive(Default, Debug, Serialize, Eq, PartialEq)]
@@ -19,10 +50,10 @@ pub struct {{project-name | downcase | pascal_case}}Card {
     complete: bool,
 }
 
-impl TryFrom<&types::PaymentsAuthorizeRouterData> for {{project-name | downcase | pascal_case}}PaymentsRequest  {
+impl TryFrom<&{{project-name | downcase | pascal_case}}RouterData<&types::PaymentsAuthorizeRouterData>> for {{project-name | downcase | pascal_case}}PaymentsRequest  {
     type Error = error_stack::Report<errors::ConnectorError>;
-    fn try_from(item: &types::PaymentsAuthorizeRouterData) -> Result<Self,Self::Error> {
-        match item.request.payment_method_data.clone() {
+    fn try_from(item: &{{project-name | downcase | pascal_case}}RouterData<&types::PaymentsAuthorizeRouterData>) -> Result<Self,Self::Error> {
+        match item.router_data.request.payment_method_data.clone() {
             api::PaymentMethodData::Card(req_card) => {
                 let card = {{project-name | downcase | pascal_case}}Card {
                     name: req_card.card_holder_name,
@@ -30,10 +61,10 @@ impl TryFrom<&types::PaymentsAuthorizeRouterData> for {{project-name | downcase
                     expiry_month: req_card.card_exp_month,
                     expiry_year: req_card.card_exp_year,
                     cvc: req_card.card_cvc,
-                    complete: item.request.is_auto_capture()?,
+                    complete: item.router_data.request.is_auto_capture()?,
                 };
                 Ok(Self {
-                    amount: item.request.amount,
+                    amount: item.amount.to_owned(),
                     card,
                 })
             }
@@ -113,11 +144,11 @@ pub struct {{project-name | downcase | pascal_case}}RefundRequest {
     pub amount: i64
 }
 
-impl<F> TryFrom<&types::RefundsRouterData<F>> for {{project-name | downcase | pascal_case}}RefundRequest {
+impl<F> TryFrom<&{{project-name | downcase | pascal_case}}RouterData<&types::RefundsRouterData<F>>> for {{project-name | downcase | pascal_case}}RefundRequest {
     type Error = error_stack::Report<errors::ConnectorError>;
-    fn try_from(item: &types::RefundsRouterData<F>) -> Result<Self,Self::Error> {
+    fn try_from(item: &{{project-name | downcase | pascal_case}}RouterData<&types::RefundsRouterData<F>>) -> Result<Self,Self::Error> {
         Ok(Self {
-            amount: item.request.refund_amount,
+            amount: item.amount.to_owned(),
         })
     }
 }

crates/router/src/connector/braintree.rs

@@ -74,6 +74,10 @@ impl ConnectorCommon for Braintree {
         "braintree"
     }
 
+    fn get_currency_unit(&self) -> api::CurrencyUnit {
+        api::CurrencyUnit::Base
+    }
+
     fn base_url<'a>(&self, connectors: &'a settings::Connectors) -> &'a str {
         connectors.braintree.base_url.as_ref()
     }
@@ -425,10 +429,19 @@ impl ConnectorIntegration<api::Capture, types::PaymentsCaptureData, types::Payme
         req: &types::PaymentsCaptureRouterData,
     ) -> CustomResult<Option<types::RequestBody>, errors::ConnectorError> {
         let connector_api_version = &req.connector_api_version.clone();
+        let connector_router_data =
+            braintree_graphql_transformers::BraintreeRouterData::try_from((
+                &self.get_currency_unit(),
+                req.request.currency,
+                req.request.amount_to_capture,
+                req,
+            ))?;
         match self.is_braintree_graphql_version(connector_api_version) {
             true => {
                 let connector_request =
-                    braintree_graphql_transformers::BraintreeCaptureRequest::try_from(req)?;
+                    braintree_graphql_transformers::BraintreeCaptureRequest::try_from(
+                        &connector_router_data,
+                    )?;
 
                 let braintree_req = types::RequestBody::log_and_get_request_body(
             &connector_request,
@@ -736,10 +749,19 @@ impl ConnectorIntegration<api::Authorize, types::PaymentsAuthorizeData, types::P
         req: &types::PaymentsAuthorizeRouterData,
     ) -> CustomResult<Option<types::RequestBody>, errors::ConnectorError> {
         let connector_api_version = &req.connector_api_version;
+        let connector_router_data =
+            braintree_graphql_transformers::BraintreeRouterData::try_from((
+                &self.get_currency_unit(),
+                req.request.currency,
+                req.request.amount,
+                req,
+            ))?;
         match self.is_braintree_graphql_version(connector_api_version) {
             true => {
                 let connector_request =
-                    braintree_graphql_transformers::BraintreePaymentsRequest::try_from(req)?;
+                    braintree_graphql_transformers::BraintreePaymentsRequest::try_from(
+                        &connector_router_data,
+                    )?;
                 let braintree_payment_request = types::RequestBody::log_and_get_request_body(
                     &connector_request,
                     utils::Encode::<braintree_graphql_transformers::BraintreePaymentsRequest>::encode_to_string_of_json,
@@ -1026,10 +1048,19 @@ impl ConnectorIntegration<api::Execute, types::RefundsData, types::RefundsRespon
         req: &types::RefundsRouterData<api::Execute>,
     ) -> CustomResult<Option<types::RequestBody>, errors::ConnectorError> {
         let connector_api_version = &req.connector_api_version;
+        let connector_router_data =
+            braintree_graphql_transformers::BraintreeRouterData::try_from((
+                &self.get_currency_unit(),
+                req.request.currency,
+                req.request.refund_amount,
+                req,
+            ))?;
         match self.is_braintree_graphql_version(connector_api_version) {
             true => {
                 let connector_request =
-                    braintree_graphql_transformers::BraintreeRefundRequest::try_from(req)?;
+                    braintree_graphql_transformers::BraintreeRefundRequest::try_from(
+                        connector_router_data,
+                    )?;
                 let braintree_refund_request = types::RequestBody::log_and_get_request_body(
             &connector_request,
             utils::Encode::<braintree_graphql_transformers::BraintreeRefundRequest>::encode_to_string_of_json,
@@ -1310,11 +1341,20 @@ impl
         &self,
         req: &types::PaymentsCompleteAuthorizeRouterData,
     ) -> CustomResult<Option<types::RequestBody>, errors::ConnectorError> {
+        let connector_router_data =
+            braintree_graphql_transformers::BraintreeRouterData::try_from((
+                &self.get_currency_unit(),
+                req.request.currency,
+                req.request.amount,
+                req,
+            ))?;
         let connector_api_version = &req.connector_api_version;
         match self.is_braintree_graphql_version(connector_api_version) {
             true => {
                 let connector_request =
-                    braintree_graphql_transformers::BraintreePaymentsRequest::try_from(req)?;
+                    braintree_graphql_transformers::BraintreePaymentsRequest::try_from(
+                        &connector_router_data,
+                    )?;
                 let braintree_payment_request = types::RequestBody::log_and_get_request_body(
                     &connector_request,
                     utils::Encode::<braintree_graphql_transformers::BraintreePaymentsRequest>::encode_to_string_of_json,

crates/router/src/connector/braintree/braintree_graphql_transformers.rs

@@ -18,6 +18,37 @@ pub const CAPTURE_TRANSACTION_MUTATION: &str = "mutation captureTransaction($inp
 pub const VOID_TRANSACTION_MUTATION: &str = "mutation voidTransaction($input:  ReverseTransactionInput!) { reverseTransaction(input: $input) { clientMutationId reversal { ...  on Transaction { id legacyId amount { value currencyCode } status } } } }";
 pub const REFUND_TRANSACTION_MUTATION: &str = "mutation refundTransaction($input:  RefundTransactionInput!) { refundTransaction(input: $input) {clientMutationId refund { id legacyId amount { value currencyCode } status } } }";
 
+#[derive(Debug, Serialize)]
+pub struct BraintreeRouterData<T> {
+    pub amount: String,
+    pub router_data: T,
+}
+
+impl<T>
+    TryFrom<(
+        &types::api::CurrencyUnit,
+        types::storage::enums::Currency,
+        i64,
+        T,
+    )> for BraintreeRouterData<T>
+{
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(
+        (currency_unit, currency, amount, item): (
+            &types::api::CurrencyUnit,
+            types::storage::enums::Currency,
+            i64,
+            T,
+        ),
+    ) -> Result<Self, Self::Error> {
+        let amount = utils::get_amount_as_string(currency_unit, amount, currency)?;
+        Ok(Self {
+            amount,
+            router_data: item,
+        })
+    }
+}
+
 #[derive(Debug, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct PaymentInput {
@@ -56,16 +87,23 @@ pub struct TransactionBody {
     merchant_account_id: Secret<String>,
 }
 
-impl TryFrom<&types::PaymentsAuthorizeRouterData> for BraintreePaymentsRequest {
+impl TryFrom<&BraintreeRouterData<&types::PaymentsAuthorizeRouterData>>
+    for BraintreePaymentsRequest
+{
     type Error = error_stack::Report<errors::ConnectorError>;
-    fn try_from(item: &types::PaymentsAuthorizeRouterData) -> Result<Self, Self::Error> {
+    fn try_from(
+        item: &BraintreeRouterData<&types::PaymentsAuthorizeRouterData>,
+    ) -> Result<Self, Self::Error> {
         let metadata: BraintreeMeta =
-            utils::to_connector_meta_from_secret(item.connector_meta_data.clone())?;
-        utils::validate_currency(item.request.currency, metadata.merchant_config_currency)?;
+            utils::to_connector_meta_from_secret(item.router_data.connector_meta_data.clone())?;
+        utils::validate_currency(
+            item.router_data.request.currency,
+            metadata.merchant_config_currency,
+        )?;
 
-        match item.request.payment_method_data.clone() {
+        match item.router_data.request.payment_method_data.clone() {
             api::PaymentMethodData::Card(_) => {
-                if item.is_three_ds() {
+                if item.router_data.is_three_ds() {
                     Ok(Self::CardThreeDs(BraintreeClientTokenRequest::try_from(
                         metadata,
                     )?))
@@ -94,10 +132,14 @@ impl TryFrom<&types::PaymentsAuthorizeRouterData> for BraintreePaymentsRequest {
     }
 }
 
-impl TryFrom<&types::PaymentsCompleteAuthorizeRouterData> for BraintreePaymentsRequest {
+impl TryFrom<&BraintreeRouterData<&types::PaymentsCompleteAuthorizeRouterData>>
+    for BraintreePaymentsRequest
+{
     type Error = error_stack::Report<errors::ConnectorError>;
-    fn try_from(item: &types::PaymentsCompleteAuthorizeRouterData) -> Result<Self, Self::Error> {
-        match item.request.payment_method_data.clone() {
+    fn try_from(
+        item: &BraintreeRouterData<&types::PaymentsCompleteAuthorizeRouterData>,
+    ) -> Result<Self, Self::Error> {
+        match item.router_data.request.payment_method_data.clone() {
             Some(api::PaymentMethodData::Card(_)) => {
                 Ok(Self::Card(CardPaymentRequest::try_from(item)?))
             }
@@ -537,22 +579,24 @@ pub struct BraintreeRefundRequest {
     variables: BraintreeRefundVariables,
 }
 
-impl<F> TryFrom<&types::RefundsRouterData<F>> for BraintreeRefundRequest {
+impl<F> TryFrom<BraintreeRouterData<&types::RefundsRouterData<F>>> for BraintreeRefundRequest {
     type Error = error_stack::Report<errors::ConnectorError>;
-    fn try_from(item: &types::RefundsRouterData<F>) -> Result<Self, Self::Error> {
+    fn try_from(
+        item: BraintreeRouterData<&types::RefundsRouterData<F>>,
+    ) -> Result<Self, Self::Error> {
         let metadata: BraintreeMeta =
-            utils::to_connector_meta_from_secret(item.connector_meta_data.clone())?;
+            utils::to_connector_meta_from_secret(item.router_data.connector_meta_data.clone())?;
 
-        utils::validate_currency(item.request.currency, metadata.merchant_config_currency)?;
+        utils::validate_currency(
+            item.router_data.request.currency,
+            metadata.merchant_config_currency,
+        )?;
         let query = REFUND_TRANSACTION_MUTATION.to_string();
         let variables = BraintreeRefundVariables {
             input: BraintreeRefundInput {
-                transaction_id: item.request.connector_transaction_id.clone(),
+                transaction_id: item.router_data.request.connector_transaction_id.clone(),
                 refund: RefundInputData {
-                    amount: utils::to_currency_base_unit(
-                        item.request.refund_amount,
-                        item.request.currency,
-                    )?,
+                    amount: item.amount,
                     merchant_account_id: metadata.merchant_account_id.ok_or(
                         errors::ConnectorError::MissingRequiredField {
                             field_name: "merchant_account_id",
@@ -928,18 +972,17 @@ pub struct BraintreeCaptureRequest {
     variables: VariableCaptureInput,
 }
 
-impl TryFrom<&types::PaymentsCaptureRouterData> for BraintreeCaptureRequest {
+impl TryFrom<&BraintreeRouterData<&types::PaymentsCaptureRouterData>> for BraintreeCaptureRequest {
     type Error = error_stack::Report<errors::ConnectorError>;
-    fn try_from(item: &types::PaymentsCaptureRouterData) -> Result<Self, Self::Error> {
+    fn try_from(
+        item: &BraintreeRouterData<&types::PaymentsCaptureRouterData>,
+    ) -> Result<Self, Self::Error> {
         let query = CAPTURE_TRANSACTION_MUTATION.to_string();
         let variables = VariableCaptureInput {
             input: CaptureInputData {
-                transaction_id: item.request.connector_transaction_id.clone(),
+                transaction_id: item.router_data.request.connector_transaction_id.clone(),
                 transaction: CaptureTransactionBody {
-                    amount: utils::to_currency_base_unit(
-                        item.request.amount_to_capture,
-                        item.request.currency,
-                    )?,
+                    amount: item.amount.to_owned(),
                 },
             },
         };
@@ -1231,14 +1274,20 @@ impl TryFrom<BraintreeMeta> for BraintreeClientTokenRequest {
     }
 }
 
-impl TryFrom<(&types::PaymentsAuthorizeRouterData, BraintreeMeta)> for CardPaymentRequest {
+impl
+    TryFrom<(
+        &BraintreeRouterData<&types::PaymentsAuthorizeRouterData>,
+        BraintreeMeta,
+    )> for CardPaymentRequest
+{
     type Error = error_stack::Report<errors::ConnectorError>;
     fn try_from(
-        payment_info: (&types::PaymentsAuthorizeRouterData, BraintreeMeta),
+        (item, metadata): (
+            &BraintreeRouterData<&types::PaymentsAuthorizeRouterData>,
+            BraintreeMeta,
+        ),
     ) -> Result<Self, Self::Error> {
-        let item = payment_info.0;
-        let metadata = payment_info.1;
-        let query = match item.request.is_auto_capture()? {
+        let query = match item.router_data.request.is_auto_capture()? {
             true => CHARGE_CREDIT_CARD_MUTATION.to_string(),
             false => AUTHORIZE_CREDIT_CARD_MUTATION.to_string(),
         };
@@ -1246,17 +1295,14 @@ impl TryFrom<(&types::PaymentsAuthorizeRouterData, BraintreeMeta)> for CardPayme
             query,
             variables: VariablePaymentInput {
                 input: PaymentInput {
-                    payment_method_id: match item.get_payment_method_token()? {
+                    payment_method_id: match item.router_data.get_payment_method_token()? {
                         types::PaymentMethodToken::Token(token) => token,
                         types::PaymentMethodToken::ApplePayDecrypt(_) => {
                             Err(errors::ConnectorError::InvalidWalletToken)?
                         }
                     },
                     transaction: TransactionBody {
-                        amount: utils::to_currency_base_unit(
-                            item.request.amount,
-                            item.request.currency,
-                        )?,
+                        amount: item.amount.to_owned(),
                         merchant_account_id: metadata.merchant_account_id.ok_or(
                             errors::ConnectorError::MissingRequiredField {
                                 field_name: "merchant_account_id",
@@ -1269,15 +1315,22 @@ impl TryFrom<(&types::PaymentsAuthorizeRouterData, BraintreeMeta)> for CardPayme
     }
 }
 
-impl TryFrom<&types::PaymentsCompleteAuthorizeRouterData> for CardPaymentRequest {
+impl TryFrom<&BraintreeRouterData<&types::PaymentsCompleteAuthorizeRouterData>>
+    for CardPaymentRequest
+{
     type Error = error_stack::Report<errors::ConnectorError>;
-    fn try_from(item: &types::PaymentsCompleteAuthorizeRouterData) -> Result<Self, Self::Error> {
+    fn try_from(
+        item: &BraintreeRouterData<&types::PaymentsCompleteAuthorizeRouterData>,
+    ) -> Result<Self, Self::Error> {
         let metadata: BraintreeMeta =
-            utils::to_connector_meta_from_secret(item.connector_meta_data.clone())?;
-        utils::validate_currency(item.request.currency, metadata.merchant_config_currency)?;
+            utils::to_connector_meta_from_secret(item.router_data.connector_meta_data.clone())?;
+        utils::validate_currency(
+            item.router_data.request.currency,
+            metadata.merchant_config_currency,
+        )?;
         let payload_data =
             utils::PaymentsCompleteAuthorizeRequestData::get_redirect_response_payload(
-                &item.request,
+                &item.router_data.request,
             )?
             .expose();
         let redirection_response: BraintreeRedirectionResponse =
@@ -1293,21 +1346,19 @@ impl TryFrom<&types::PaymentsCompleteAuthorizeRouterData> for CardPaymentRequest
         .change_context(errors::ConnectorError::MissingConnectorRedirectionPayload {
             field_name: "three_ds_data",
         })?;
-        let query =
-            match utils::PaymentsCompleteAuthorizeRequestData::is_auto_capture(&item.request)? {
-                true => CHARGE_CREDIT_CARD_MUTATION.to_string(),
-                false => AUTHORIZE_CREDIT_CARD_MUTATION.to_string(),
-            };
+        let query = match utils::PaymentsCompleteAuthorizeRequestData::is_auto_capture(
+            &item.router_data.request,
+        )? {
+            true => CHARGE_CREDIT_CARD_MUTATION.to_string(),
+            false => AUTHORIZE_CREDIT_CARD_MUTATION.to_string(),
+        };
         Ok(Self {
             query,
             variables: VariablePaymentInput {
                 input: PaymentInput {
                     payment_method_id: three_ds_data.nonce,
                     transaction: TransactionBody {
-                        amount: utils::to_currency_base_unit(
-                            item.request.amount,
-                            item.request.currency,
-                        )?,
+                        amount: item.amount.to_owned(),
                         merchant_account_id: metadata.merchant_account_id.ok_or(
                             errors::ConnectorError::MissingRequiredField {
                                 field_name: "merchant_account_id",

crates/router/src/connector/utils.rs

@@ -994,6 +994,33 @@ pub fn to_currency_base_unit_from_optional_amount(
     }
 }
 
+pub fn get_amount_as_string(
+    currency_unit: &types::api::CurrencyUnit,
+    amount: i64,
+    currency: diesel_models::enums::Currency,
+) -> Result<String, error_stack::Report<errors::ConnectorError>> {
+    let amount = match currency_unit {
+        types::api::CurrencyUnit::Minor => amount.to_string(),
+        types::api::CurrencyUnit::Base => to_currency_base_unit(amount, currency)?,
+    };
+    Ok(amount)
+}
+
+pub fn get_amount_as_f64(
+    currency_unit: &types::api::CurrencyUnit,
+    amount: i64,
+    currency: diesel_models::enums::Currency,
+) -> Result<f64, error_stack::Report<errors::ConnectorError>> {
+    let amount = match currency_unit {
+        types::api::CurrencyUnit::Base => to_currency_base_unit_asf64(amount, currency)?,
+        types::api::CurrencyUnit::Minor => u32::try_from(amount)
+            .into_report()
+            .change_context(errors::ConnectorError::ParsingFailed)?
+            .into(),
+    };
+    Ok(amount)
+}
+
 pub fn to_currency_base_unit(
     amount: i64,
     currency: diesel_models::enums::Currency,
@@ -1001,7 +1028,7 @@ pub fn to_currency_base_unit(
     currency
         .to_currency_base_unit(amount)
         .into_report()
-        .change_context(errors::ConnectorError::RequestEncodingFailed)
+        .change_context(errors::ConnectorError::ParsingFailed)
 }
 
 pub fn to_currency_lower_unit(
@@ -1050,7 +1077,7 @@ pub fn to_currency_base_unit_asf64(
     currency
         .to_currency_base_unit_asf64(amount)
         .into_report()
-        .change_context(errors::ConnectorError::RequestEncodingFailed)
+        .change_context(errors::ConnectorError::ParsingFailed)
 }
 
 pub fn str_to_f32<S>(value: &str, serializer: S) -> Result<S::Ok, S::Error>

crates/router/src/types/api.rs

@@ -47,10 +47,20 @@ pub trait ConnectorTransactionId: ConnectorCommon + Sync {
     }
 }
 
+pub enum CurrencyUnit {
+    Base,
+    Minor,
+}
+
 pub trait ConnectorCommon {
     /// Name of the connector (in lowercase).
     fn id(&self) -> &'static str;
 
+    /// Connector accepted currency unit as either "Base" or "Minor"
+    fn get_currency_unit(&self) -> CurrencyUnit {
+        CurrencyUnit::Minor // Default implementation should be remove once it is implemented in all connectors
+    }
+
     /// HTTP header used for authorization.
     fn get_auth_header(
         &self,