refactored connection classes to be more generic and accept credentials of different apps.

backend/src/main/java/com/vaessl/app/connection/ConnectionProvider.java

@@ -0,0 +1,11 @@
+package com.vaessl.app.connection;
+
+import com.vaessl.app.dto.ConnectionRequest;
+import com.vaessl.app.dto.ConnectionResponse;
+
+public interface ConnectionProvider {
+
+    String getServiceType();
+    
+    ConnectionResponse authenticate (ConnectionRequest connectionRequest);
+}

backend/src/main/java/com/vaessl/app/connection/ConnectionService.java

@@ -1,7 +1,10 @@
 package com.vaessl.app.connection;
 
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
 import org.springframework.stereotype.Service;
-import org.springframework.web.client.RestClient;
 
 import com.vaessl.app.dto.ConnectionRequest;
 import com.vaessl.app.dto.ConnectionResponse;
@@ -9,20 +12,20 @@ import com.vaessl.app.dto.ConnectionResponse;
 @Service
 public class ConnectionService {
 
-    private final RestClient.Builder restClientBuilder;
+    private final Map<String, ConnectionProvider> providerRegistry;
 
-    public ConnectionService(RestClient.Builder restClientBuilder) {
+    public ConnectionService(List<ConnectionProvider> providers) {
-        this.restClientBuilder = restClientBuilder;
+        this.providerRegistry = providers.stream()
+                .collect(Collectors.toMap(ConnectionProvider::getServiceType, p -> p));
     }
 
     public ConnectionResponse login(ConnectionRequest request) {
-        // TODO: Look into Map<String, RestClient> to cache restclient requests.
+        ConnectionProvider provider = providerRegistry.get(request.serviceType().toUpperCase());
-        return restClientBuilder.baseUrl(request.appUrl())
+
-                .build()
+        if (provider == null) {
-                .post()
+            throw new IllegalArgumentException("Unknown provider: " + request.serviceType());
-                .uri("/api/v1/users/login")
+        }
-                .body(request)
+
-                .retrieve()
+        return provider.authenticate(request);
-                .body(ConnectionResponse.class);
     }
 }

backend/src/main/java/com/vaessl/app/connection/Endpoints.java

@@ -0,0 +1,14 @@
+package com.vaessl.app.connection;
+
+import lombok.Getter;
+
+@Getter
+public enum Endpoints {
+    HOMEBOX_LOGIN("/api/v1/users/login");
+    
+    private final String endpoint;
+
+    Endpoints(String endpoint){
+        this.endpoint = endpoint;
+    }
+}

backend/src/main/java/com/vaessl/app/connection/HomeBoxConnectionProvider.java

@@ -0,0 +1,42 @@
+package com.vaessl.app.connection;
+
+import java.util.Map;
+
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestClient;
+
+import com.vaessl.app.dto.ConnectionRequest;
+import com.vaessl.app.dto.ConnectionResponse;
+
+import static com.vaessl.app.connection.Endpoints.*;
+
+@Component
+public class HomeBoxConnectionProvider implements ConnectionProvider {
+
+    private final RestClient.Builder restClientBuilder;
+
+    public HomeBoxConnectionProvider(RestClient.Builder restClientBuilder) {
+        this.restClientBuilder = restClientBuilder;
+    }
+
+    @Override
+    public String getServiceType() {
+        return "HOMEBOX";
+    }
+
+    @Override
+    public ConnectionResponse authenticate(ConnectionRequest connectionRequest) {
+        Map<String, Object> homeboxPayload = Map.of("username", connectionRequest.credentials().get("username"),
+                "password", connectionRequest.credentials().get("password"), "stayLoggedIn",
+                connectionRequest.stayLoggedIn());
+
+        return restClientBuilder.baseUrl(connectionRequest.appUrl())
+                .build()
+                .post()
+                .uri(HOMEBOX_LOGIN.getEndpoint())
+                .body(homeboxPayload)
+                .retrieve()
+                .body(ConnectionResponse.class);
+    }
+
+}

backend/src/main/java/com/vaessl/app/dto/ConnectionRequest.java

@@ -1,9 +1,13 @@
 package com.vaessl.app.dto;
 
+import java.util.Map;
+
 import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotEmpty;
 
 public record ConnectionRequest(
-                @NotBlank(message = "App URL is mandatory") String appUrl,
+        @NotBlank(message = "App URL is mandatory") String appUrl,
-                @NotBlank(message = "Username is mandatory") String username,
+        @NotBlank String serviceType, 
-                @NotBlank(message = "Password is mandatory") String password) {
+        @NotEmpty Map <String, String> credentials,
+        boolean stayLoggedIn) {
 }

backend/src/main/java/com/vaessl/app/exception/ErrorMessages.java

@@ -6,7 +6,6 @@ import lombok.Getter;
 
 @Getter
 public enum ErrorMessages {
-
     BAD_REQUEST_EMPTY_FIELDS(HttpStatus.BAD_REQUEST, "Fields must not be empty."), UNAUTHORIZED_WRONG_LOGIN(
             HttpStatus.UNAUTHORIZED, "Invalid username or password."), SERVICE_UNAVAILABLE_UNREACHABLE_URL(
                     HttpStatus.SERVICE_UNAVAILABLE, "The target URL is unreachable."), SERVER_ERROR_GENERAL(

backend/src/test/java/com/vaessl/app/connection/HomeboxIntegrationTest.java

@@ -16,25 +16,27 @@ import com.jayway.jsonpath.JsonPath;
 import com.vaessl.app.dto.ConnectionRequest;
 
 import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Map;
+
 import static com.github.tomakehurst.wiremock.client.WireMock.*;
+import static com.vaessl.app.connection.Endpoints.*;
 
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 @AutoConfigureTestRestTemplate
 @WireMockTest
-public class ConnectionIntegrationTest {
+public class HomeboxIntegrationTest {
 
     @Autowired
     TestRestTemplate restTemplate;
 
-    private static final String API_LOGIN = "/api/v1/users/login";
-
     /**
      * Returns Token and status code OK when login is successful.
      */
     @Test
-    void shouldReturnTokenAndStatusOkWhenCredentialsAreValid(WireMockRuntimeInfo wm) {
+    void shouldReturnTokenAndStatusOkWhenHomeboxCredentialsAreValid(WireMockRuntimeInfo wm) {
 
-        stubFor(post(API_LOGIN)
+        stubFor(post(HOMEBOX_LOGIN.getEndpoint())
                 .willReturn(okJson("""
                             {
                                 "token": "fake-jwt-token",
@@ -64,7 +66,7 @@ public class ConnectionIntegrationTest {
     @Test
     void shouldFailToConnectWhenHomeboxReturnsUnauthorized(WireMockRuntimeInfo wm) {
 
-        stubFor(post(API_LOGIN).willReturn(unauthorized()));
+        stubFor(post(HOMEBOX_LOGIN.getEndpoint()).willReturn(unauthorized()));
 
         ResponseEntity<String> response = restTemplate.postForEntity("/login", connectionRequest(wm), String.class);
 
@@ -78,7 +80,7 @@ public class ConnectionIntegrationTest {
     @Test
     void shouldFailToConnectWhenHomeboxReturnsServiceUnavailable(WireMockRuntimeInfo wm) {
 
-        stubFor(post(API_LOGIN).willReturn(serviceUnavailable()));
+        stubFor(post(HOMEBOX_LOGIN.getEndpoint()).willReturn(serviceUnavailable()));
 
         ResponseEntity<String> response = restTemplate.postForEntity("/login", connectionRequest(wm), String.class);
 
@@ -90,15 +92,18 @@ public class ConnectionIntegrationTest {
      * Checks when the service is unavailable or the app URL is wrong.
      */
     @Test
-    void shouldReturnServiceUnavailableWhenUrlIsCompletelyWrong() {
+    void shouldReturnServiceUnavailableWhenHomeboxUrlIsWrong() {
 
         ConnectionRequest badRequest = new ConnectionRequest(
                 "http://localhost:1234",
-                "user",
+                "HOMEBOX",
-                "pass");
+                Map.of("username", "myUser", "password", "myPass"),
+                false);
 
         ResponseEntity<String> response = restTemplate.postForEntity("/login", badRequest, String.class);
 
+        System.out.println("RESPONSE: " + response.getBody());
+
         assertThat(response.getStatusCode()).isEqualTo(HttpStatus.SERVICE_UNAVAILABLE);
         assertThat(response.getBody()).contains("The target URL is unreachable.");
     }
@@ -107,9 +112,9 @@ public class ConnectionIntegrationTest {
      * Checks if any login fields are empty since all of them are mandatory.
      */
     @Test
-    void shouldReturnBadRequestWhenFieldsAreEmpty() {
+    void shouldReturnBadRequestWhenHomeboxFieldsAreEmpty() {
 
-        ConnectionRequest emtpyRequest = new ConnectionRequest("", "", "");
+        ConnectionRequest emtpyRequest = new ConnectionRequest("", "", Map.of(), false);
 
         ResponseEntity<String> response = restTemplate.postForEntity("/login", emtpyRequest, String.class);
 
@@ -117,7 +122,15 @@ public class ConnectionIntegrationTest {
         assertThat(response.getBody()).contains("Fields must not be empty.");
     }
 
-    private ConnectionRequest connectionRequest(WireMockRuntimeInfo wireMockRuntimeInfo) {
+    /**
-        return new ConnectionRequest(wireMockRuntimeInfo.getHttpBaseUrl(), "username", "password");
+     * Creates a valid connection request with a mock Api throuh
+     * WireMockRuntimeInfo.
+     * 
+     * @param wm
+     * @return a mock api connection request.
+     */
+    private ConnectionRequest connectionRequest(WireMockRuntimeInfo wm) {
+        return new ConnectionRequest(wm.getHttpBaseUrl(), "HOMEBOX", Map.of("username", "admin", "password", "pw"),
+                false);
     }
 }