[CC-1388] Add Jwt creation:

- Add request for auth token creation.
- Add support for doing requests to different APIs.
- Add config class for token service api.
- Disabled deprecated/unstable tests of secured payment methods.

Author: Ryouzanpaku

src/main/java/com/unzer/payment/AuthToken.java

@@ -0,0 +1,18 @@
+package com.unzer.payment;
+
+import lombok.Getter;
+
+@Getter
+public class AuthToken implements Resource {
+    @Override
+    public String getId() {
+        return null;
+    }
+
+    @Override
+    public String getUrl() {
+        return "/v1/auth/token";
+    }
+
+    private String accessToken;
+}

src/main/java/com/unzer/payment/Unzer.java

@@ -13,11 +13,9 @@
 import com.unzer.payment.models.paylater.InstallmentPlansRequest;
 import com.unzer.payment.paymenttypes.PaylaterInstallment;
 import com.unzer.payment.paymenttypes.PaymentType;
-import com.unzer.payment.service.LinkpayService;
-import com.unzer.payment.service.PaymentService;
-import com.unzer.payment.service.PaypageService;
-import com.unzer.payment.service.WebhookService;
+import com.unzer.payment.service.*;
 import com.unzer.payment.service.marketplace.MarketplacePaymentService;
+import com.unzer.payment.util.JwtHelper;
 import com.unzer.payment.webhook.Webhook;
 import com.unzer.payment.webhook.WebhookList;
 import lombok.Getter;
@@ -38,11 +36,15 @@
 public class Unzer {
     @Getter
     private final String privateKey;
+    @Getter
+    private String jwtToken;
+
     private final transient PaymentService paymentService;
     private final transient MarketplacePaymentService marketplacePaymentService;
     private final transient PaypageService paypageService;
     private final transient LinkpayService linkpayService;
     private final transient WebhookService webhookService;
+    private final transient TokenService tokenService;
 
     public Unzer(String privateKey) {
         this(privateKey, null, null);
@@ -82,6 +84,7 @@ public Unzer(UnzerRestCommunication restCommunication, String privateKey, String
         this.paypageService = new PaypageService(this, restCommunication);
         this.linkpayService = new LinkpayService(this, restCommunication);
         this.webhookService = new WebhookService(this, restCommunication);
+        this.tokenService = new TokenService(this, restCommunication);
     }
 
     public Unzer(String privateKey, Locale locale) {
@@ -1522,4 +1525,15 @@ public Webhook updateSingleWebhook(String updateId, Webhook updateWebhook)
     public WebhookList getWebhooks() throws HttpCommunicationException {
         return webhookService.getWebhooks();
     }
+
+    public AuthToken createAuthToken() throws HttpCommunicationException {
+        return tokenService.create();
+    }
+
+    public void prepareJwtToken() throws HttpCommunicationException {
+        if (this.jwtToken != null && JwtHelper.validateExpiryDate(this.jwtToken)) {
+            return;
+        }
+        this.jwtToken = tokenService.create().getAccessToken();
+    }
 }

src/main/java/com/unzer/payment/communication/api/ApiConfig.java

@@ -0,0 +1,25 @@
+package com.unzer.payment.communication.api;
+
+import lombok.Getter;
+
+@Getter
+public class ApiConfig {
+    enum AUTH_METOD {
+        BASIC,
+        BEARER;
+    }
+
+    private final String baseUrl;
+    private final String testBaseUrl;
+    private final AUTH_METOD authMethod;
+
+    public ApiConfig(String baseUrl, String testBaseUrl) {
+        this(baseUrl, testBaseUrl, AUTH_METOD.BASIC);
+    }
+
+    public ApiConfig(String baseUrl, String testBaseUrl, AUTH_METOD authMethod) {
+        this.baseUrl = baseUrl;
+        this.testBaseUrl = testBaseUrl;
+        this.authMethod = authMethod;
+    }
+}

src/main/java/com/unzer/payment/communication/api/ApiConfigs.java

@@ -0,0 +1,8 @@
+package com.unzer.payment.communication.api;
+
+public class ApiConfigs {
+
+    public static final ApiConfig PAYMENT_API = new ApiConfig("https://api.unzer.com", "https://sbx-api.unzer.com");
+    public static final ApiConfig TOKEN_SERVICE_API = new ApiConfig("https://token.upcgw.com", "https://token.test.upcgw.com");
+    public static final ApiConfig PAYPAGE_API = new ApiConfig("https://paypage.unzer.com", "https://paypage.test.unzer.io");
+}

src/main/java/com/unzer/payment/service/TokenService.java

@@ -0,0 +1,43 @@
+package com.unzer.payment.service;
+
+import com.unzer.payment.AuthToken;
+import com.unzer.payment.Unzer;
+import com.unzer.payment.communication.HttpCommunicationException;
+import com.unzer.payment.communication.JsonParser;
+import com.unzer.payment.communication.UnzerRestCommunication;
+import com.unzer.payment.communication.api.ApiConfig;
+import com.unzer.payment.communication.api.ApiConfigs;
+
+public class TokenService {
+    private final UnzerRestCommunication restCommunication;
+
+    private final UrlUtil urlUtil;
+    private final Unzer unzer;
+
+    protected JsonParser jsonParser;
+
+    private static final ApiConfig API_CONFIG = ApiConfigs.TOKEN_SERVICE_API;
+
+    public TokenService(Unzer unzer, UnzerRestCommunication restCommunication) {
+        this(unzer, restCommunication, new JsonParser());
+    }
+
+    public TokenService(Unzer unzer, UnzerRestCommunication restCommunication, JsonParser jsonParser) {
+        super();
+        this.unzer = unzer;
+        this.urlUtil = new UrlUtil(unzer.getPrivateKey(), API_CONFIG);
+        this.restCommunication = restCommunication;
+        this.jsonParser = jsonParser;
+    }
+
+    public AuthToken create() throws HttpCommunicationException {
+        AuthToken authToken = new AuthToken();
+        String response = restCommunication.httpPost(
+                urlUtil.getUrl(authToken),
+                unzer.getPrivateKey(),
+                authToken
+        );
+
+        return jsonParser.fromJson(response, AuthToken.class);
+    }
+}

src/main/java/com/unzer/payment/service/UrlUtil.java

@@ -1,6 +1,8 @@
 package com.unzer.payment.service;
 
 import com.unzer.payment.Resource;
+import com.unzer.payment.communication.api.ApiConfig;
+import com.unzer.payment.communication.api.ApiConfigs;
 import com.unzer.payment.models.PaylaterInvoiceConfigRequest;
 import com.unzer.payment.models.paylater.InstallmentPlansRequest;
 
@@ -18,11 +20,19 @@ public UrlUtil(String privateKey) {
         this.apiEndpoint = resolveApiEndpoint(privateKey);
     }
 
-    private static String resolveApiEndpoint(String privateKey) {
+    public UrlUtil(String privateKey, ApiConfig apiConfig) {
+        this.apiEndpoint = resolveApiEndpoint(privateKey, apiConfig);
+    }
+
+    private static String resolveApiEndpoint(String privateKey, ApiConfig apiConfig) {
         // 'p-' for production, 's-' for sandbox
         return privateKey.charAt(0) == 'p'
-                ? "https://api.unzer.com"
-                : "https://sbx-api.unzer.com";
+                ? apiConfig.getBaseUrl()
+                : apiConfig.getTestBaseUrl();
+    }
+
+    private static String resolveApiEndpoint(String privateKey) {
+        return resolveApiEndpoint(privateKey, ApiConfigs.PAYMENT_API);
     }
 
     public String getRestUrl() {

src/main/java/com/unzer/payment/util/JwtHelper.java

@@ -0,0 +1,39 @@
+package com.unzer.payment.util;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.util.Base64;
+import java.util.Date;
+
+public class JwtHelper {
+
+    public static boolean validateExpiryDate(String jwtToken) {
+        Date now = new Date();
+
+        String payload = extractPayload(jwtToken);
+        ObjectMapper objectMapper = new ObjectMapper();
+
+        JsonNode payloadJson = null;
+        try {
+            payloadJson = objectMapper.readTree(payload);
+        } catch (JsonProcessingException e) {
+            return false;
+        }
+
+        long exp = payloadJson.get("exp").asLong();
+        Date expirationDate = new Date(exp * 1000);
+        return now.before(expirationDate);
+    }
+
+    private static String extractPayload(String jwtToken) {
+        String[] tokenSegments = jwtToken.split("\\.");
+        if (tokenSegments.length != 3) {
+            throw new IllegalArgumentException("Invalid JWT token format");
+        }
+
+        Base64.Decoder decoder = Base64.getUrlDecoder();
+        return new String(decoder.decode(tokenSegments[1]));
+    }
+}

src/test/java/com/unzer/payment/communication/api/ApiConfigTest.java

@@ -0,0 +1,26 @@
+package com.unzer.payment.communication.api;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class ApiConfigTest {
+
+    @Test
+    void getPaymentApiConfig() {
+        assertEquals("https://api.unzer.com", ApiConfigs.PAYMENT_API.getBaseUrl());
+        assertEquals("https://sbx-api.unzer.com", ApiConfigs.PAYMENT_API.getTestBaseUrl());
+    }
+
+    @Test
+    void getTokenServiceConfig() {
+        assertEquals("https://token.upcgw.com", ApiConfigs.TOKEN_SERVICE_API.getBaseUrl());
+        assertEquals("https://token.test.upcgw.com", ApiConfigs.TOKEN_SERVICE_API.getTestBaseUrl());
+    }
+
+    @Test
+    void getPaypageServiceConfig() {
+        assertEquals("https://paypage.unzer.com", ApiConfigs.PAYPAGE_API.getBaseUrl());
+        assertEquals("https://paypage.test.unzer.io", ApiConfigs.PAYPAGE_API.getTestBaseUrl());
+    }
+}

src/test/java/com/unzer/payment/integration/paymenttypes/InstallmentSecuredTest.java

@@ -161,7 +161,7 @@ public void testCreateInstallmentSecuredTypeIbanLater()
     }
 
     @Test
-
+    @Disabled("deprecated")
     @Deprecated
     public void testAuthorizeViaTypeWithIbanBasketV1()
             throws HttpCommunicationException, ParseException {
@@ -229,7 +229,7 @@ public void testAuthorizeViaTypeWithIbanBasketV2()
     }
 
     @Test
-
+    @Disabled("deprecated")
     @Deprecated
     public void testAuthorizeViaUnzerTypeIdWithIbanBasketV1()
             throws HttpCommunicationException, ParseException, MalformedURLException {
@@ -292,7 +292,7 @@ public void testAuthorizeViaUnzerTypeIdWithIbanBasketV2()
     }
 
     @Test
-
+    @Disabled("deprecated")
     @Deprecated
     public void testChargeViaAuthorizeBasketV1() throws HttpCommunicationException, ParseException {
         Unzer unzer = getUnzer(Keys.LEGACY_PRIVATE_KEY);
@@ -349,7 +349,7 @@ public void testChargeViaAuthorizeBasketV2() throws HttpCommunicationException,
 
     @Test
     @Deprecated
-
+    @Disabled("deprecated")
     public void testFullCancellationBeforeShipmentBasketV1()
             throws HttpCommunicationException, ParseException {
         Unzer unzer = getUnzer(Keys.LEGACY_PRIVATE_KEY);
@@ -412,7 +412,7 @@ public void testFullCancellationBeforeShipmentBasketV2()
     }
 
     @Test
-
+    @Disabled("deprecated")
     @Deprecated
     public void testPartialCancellationBeforeShipmentBasketV1()
             throws HttpCommunicationException, ParseException {
@@ -478,6 +478,7 @@ public void testPartialCancellationBeforeShipmentBasketV2()
     }
 
     @Test
+    @Disabled("deprecated")
     @Deprecated
     public void testShipmentBasketV1() throws HttpCommunicationException, ParseException {
         InstallmentSecuredRatePlan ratePlan = getInstallmentSecuredRatePlan();
@@ -536,7 +537,7 @@ public void testShipmentBasketV2() throws HttpCommunicationException, ParseExcep
 
     @Test
     @Deprecated
-
+    @Disabled("deprecated")
     public void testFullCancelAfterShipmentBasketV1()
             throws HttpCommunicationException, ParseException {
         InstallmentSecuredRatePlan ratePlan = getInstallmentSecuredRatePlan();
@@ -597,7 +598,7 @@ public void testFullCancelAfterShipmentBasketV2()
     }
 
     @Test
-
+    @Disabled("deprecated")
     @Deprecated
     public void testAuthorizeHirePurchaseDirectDebitBasketV1()
             throws HttpCommunicationException, ParseException {