added post request to achieve login response with tokens

2026-03-30 05:07:51 +02:00
parent 8128ab829f
commit 75b6995b94
6 changed files with 231 additions and 0 deletions
@@ -0,0 +1,27 @@
+package com.vaessl.app.connection;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.vaessl.app.dto.ConnectionRequest;
+import com.vaessl.app.dto.ConnectionResponse;
+
+import jakarta.validation.Valid;
+
+@RestController
+public class ConnectionController {
+
+    private final ConnectionService connectionService;
+
+    public ConnectionController(ConnectionService connectionService) {
+        this.connectionService = connectionService;
+    }
+
+    @PostMapping("/login")
+    public ResponseEntity<ConnectionResponse> loginResponse(@Valid @RequestBody ConnectionRequest request) {
+        ConnectionResponse connectionResponse = connectionService.login(request);
+        return ResponseEntity.ok(connectionResponse);
+    }
+}
@@ -0,0 +1,28 @@
+package com.vaessl.app.connection;
+
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestClient;
+
+import com.vaessl.app.dto.ConnectionRequest;
+import com.vaessl.app.dto.ConnectionResponse;
+
+@Service
+public class ConnectionService {
+
+    private final RestClient.Builder restClientBuilder;
+
+    public ConnectionService(RestClient.Builder restClientBuilder) {
+        this.restClientBuilder = restClientBuilder;
+    }
+
+    public ConnectionResponse login(ConnectionRequest request) {
+        //TODO: Look into Map<String, RestClient> to cache restclient requests.
+        return restClientBuilder.baseUrl(request.appUrl())
+                .build()
+                .post()
+                .uri("/api/v1/users/login")
+                .body(request)
+                .retrieve()
+                .body(ConnectionResponse.class);
+    }
+}
@@ -0,0 +1,9 @@
+package com.vaessl.app.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record ConnectionRequest(
+        @NotBlank(message = "App URL is mandatory") String appUrl,
+        @NotBlank(message = "Username is mandatory") String username,
+        @NotBlank(message = "Password is mandatory") String password) {
+}
@@ -0,0 +1,7 @@
+package com.vaessl.app.dto;
+
+import java.time.Instant;
+
+public record ConnectionResponse(String token, String attachmentToken, Instant expiresAt) {
+
+}
@@ -0,0 +1,40 @@
+package com.vaessl.app.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ProblemDetail;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.HttpServerErrorException;
+import org.springframework.web.client.ResourceAccessException;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ProblemDetail handleEmptyCredentialInput(MethodArgumentNotValidException e) {
+        return ProblemDetail.forStatusAndDetail(HttpStatus.BAD_REQUEST, "Fields must not be empty.");
+    }
+
+    @ExceptionHandler(HttpClientErrorException.Unauthorized.class)
+    public ProblemDetail handleUnauthorizedAccess(HttpClientErrorException e) {
+
+        return ProblemDetail.forStatusAndDetail(HttpStatus.UNAUTHORIZED, "Invalid username or password.");
+    }
+
+    @ExceptionHandler(ResourceAccessException.class)
+    public ProblemDetail handleNoConnection(ResourceAccessException e) {
+
+        return ProblemDetail.forStatusAndDetail(HttpStatus.SERVICE_UNAVAILABLE, "The target URL is unreachable.");
+    }
+
+    @ExceptionHandler(HttpServerErrorException.class)
+    public ProblemDetail handleTimeoutOrNotFound(HttpServerErrorException e) {
+
+        return ProblemDetail
+                .forStatusAndDetail(e.getStatusCode(),
+                        "The external app returned a server error: " + e.getStatusText());
+    }
+
+}