add new billing functionality that allow user to add/refund payment

CHANGELOG.md

@@ -1,5 +1,12 @@
 # CHANGELOG
 
+## Next Release
+
+- [ADDED] Adds new beta billing functionality for ReferralCustomer users
+  - `addPaymentMethod` can add a pre-existing Stripe bank account or credit card to your EasyPost account
+  - `refundByAmount` refunds your wallet by a dollar amount
+  - `refundByPaymentLog` refunds you wallet by a PaymentLog ID
+
 ## v6.0.0 (2023-01-05)
 
 Includes all the changes from `v6.0.0-rc1` listed below in addition to the following:

README.md

@@ -146,4 +146,4 @@ Some tests may require an EasyPost user with a particular set of enabled feature
 
 - `USPS_CARRIER_ACCOUNT_ID` (eg: one-call buying a shipment for non-EasyPost employees)
 - `PARTNER_USER_PROD_API_KEY` (eg: creating a referral user)
-- `REFERRAL_USER_PROD_API_KEY` (eg: adding a credit card to a referral user)
+- `REFERRAL_CUSTOMER_PROD_API_KEY` (eg: adding a credit card to a referral user)

pom.xml

@@ -277,7 +277,7 @@
             <plugin>
                 <groupId>org.owasp</groupId>
                 <artifactId>dependency-check-maven</artifactId>
-                <version>7.1.1</version>
+                <version>7.4.4</version>
                 <configuration>
                     <failBuildOnCVSS>7</failBuildOnCVSS>
                     <junitFailOnCVSS>7</junitFailOnCVSS>

src/main/java/com/easypost/model/BetaPaymentRefund.java

@@ -0,0 +1,13 @@
+package com.easypost.model;
+
+import java.util.List;
+import lombok.Getter;
+
+@Getter
+public class BetaPaymentRefund extends EasyPostResource{
+    private int refundedAmount;
+    private List<Error> errors;
+    private List<String> refundedPaymentLogs;
+    private String paymentLogId;
+    private String refundedAmountCurrencys;
+}

src/main/java/com/easypost/service/BetaReferralCustomerService.java

@@ -0,0 +1,89 @@
+package com.easypost.service;
+
+import java.util.HashMap;
+
+import com.easypost.exception.EasyPostException;
+import com.easypost.http.Requestor;
+import com.easypost.http.Requestor.RequestMethod;
+import com.easypost.model.BetaPaymentRefund;
+import com.easypost.model.PaymentMethod;
+import com.easypost.model.PaymentMethodObject;
+
+public class BetaReferralCustomerService {
+    private final EasyPostClient client;
+
+    /**
+     * BetaReferralCustomerService constructor.
+     * 
+     * @param client The client object.
+     */
+    BetaReferralCustomerService(EasyPostClient client) {
+        this.client = client;
+    }
+
+    /**
+     * Add Stripe payment method to referral customer.
+     *
+     * @param stripeCustomerId       ID of the Stripe account.
+     * @param paymentMethodReference Reference of Stripe payment method.
+     * @return PaymentMethodObject object.
+     * @throws EasyPostException
+     */
+    public PaymentMethodObject addPaymentMethod(String stripeCustomerId, String paymentMethodReference)
+            throws EasyPostException {
+        return addPaymentMethod(stripeCustomerId, paymentMethodReference, PaymentMethod.Priority.PRIMARY);
+    }
+
+    /**
+     * Add Stripe payment method to referral customer.
+     *
+     * @param stripeCustomerId       ID of the Stripe account.
+     * @param paymentMethodReference Reference of Stripe payment method.
+     * @param primaryOrSecondary     Primary or secondary of this payment method.
+     * @return PaymentMethodObject object.
+     * @throws EasyPostException
+     */
+    public PaymentMethodObject addPaymentMethod(String stripeCustomerId, String paymentMethodReference,
+            PaymentMethod.Priority primaryOrSecondary) throws EasyPostException {
+        HashMap<String, Object> params = new HashMap<>();
+        params.put("stripe_customer_id", stripeCustomerId);
+        params.put("payment_method_reference", paymentMethodReference);
+        params.put("priority", primaryOrSecondary);
+
+        HashMap<String, Object> wrappedParams = new HashMap<>();
+        wrappedParams.put("payment_method", params);
+
+        return Requestor.request(RequestMethod.POST, "%s/beta/referral_customers/payment_method", wrappedParams,
+                PaymentMethodObject.class, client);
+    }
+
+    /**
+     * Refund by amount for a recent payment.
+     *
+     * @param refundAmount Amount to be refunded by cents.
+     * @return BetaPaymentRefund object.
+     * @throws EasyPostException
+     */
+    public BetaPaymentRefund refundByAmount(int refundAmount) throws EasyPostException {
+        HashMap<String, Object> params = new HashMap<>();
+        params.put("refund_amount", refundAmount);
+
+        return Requestor.request(RequestMethod.POST, "%s/beta/referral_customers/refunds", params,
+                BetaPaymentRefund.class, client);
+    }
+
+    /**
+     * Refund a payment by a payment log ID.
+     *
+     * @param paymentLogId ID of the payment log.
+     * @return BetaPaymentRefund object.
+     * @throws EasyPostException
+     */
+    public BetaPaymentRefund refundByPaymentLog(String paymentLogId) throws EasyPostException {
+        HashMap<String, Object> params = new HashMap<>();
+        params.put("payment_log_id", paymentLogId);
+
+        return Requestor.request(RequestMethod.POST, "%s/beta/referral_customers/refunds", params,
+                BetaPaymentRefund.class, client);
+    }
+}

src/main/java/com/easypost/service/EasyPostClient.java

@@ -12,6 +12,7 @@ public class EasyPostClient {
     public final AddressService address;
     public final ApiKeyService apiKey;
     public final BatchService batch;
+    public final BetaReferralCustomerService betaReferralCustomer;
     public final BillingService billing;
     public final CarrierAccountService carrierAccount;
     public final CarrierTypeService carrierType;
@@ -114,6 +115,7 @@ public EasyPostClient(String apiKey, int connectTimeoutMilliseconds, int readTim
         this.address = new AddressService(this);
         this.apiKey = new ApiKeyService(this);
         this.batch = new BatchService(this);
+        this.betaReferralCustomer = new BetaReferralCustomerService(this);
         this.billing = new BillingService(this);
         this.carrierAccount = new CarrierAccountService(this);
         this.carrierType = new CarrierTypeService(this);