feat: add error handling

backend/src/main/java/com/oskarwiedeweg/cloudwork/error/GlobalErrorHandler.java

@@ -0,0 +1,45 @@
+package com.oskarwiedeweg.cloudwork.error;
+
+import com.oskarwiedeweg.cloudwork.error.dto.ErrorDto;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.HttpStatusCode;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.ErrorResponse;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.server.ResponseStatusException;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
+
+import java.time.LocalDateTime;
+
+@ControllerAdvice
+public class GlobalErrorHandler {
+
+    @ExceptionHandler(Throwable.class)
+    public ResponseEntity<ErrorDto> handleError(Throwable throwable) {
+        if (!(throwable instanceof ErrorResponse errorResponse)) {
+            return construct(HttpStatus.INTERNAL_SERVER_ERROR, HttpStatus.INTERNAL_SERVER_ERROR.getReasonPhrase());
+        }
+        return construct(errorResponse.getStatusCode(),
+                HttpStatus.resolve(errorResponse.getStatusCode().value()).getReasonPhrase());
+    }
+
+    @ExceptionHandler(ResponseStatusException.class)
+    public ResponseEntity<ErrorDto> handleError(ResponseStatusException throwable) {
+        return construct(throwable.getStatusCode(), throwable.getMessage());
+    }
+
+
+    private ResponseEntity<ErrorDto> construct(HttpStatusCode statusCode, Object error) {
+        return ResponseEntity.status(statusCode).body(new ErrorDto(
+                statusCode.value(),
+                ServletUriComponentsBuilder.fromCurrentRequest()
+                        .build()
+                        .getPath(),
+                error,
+                LocalDateTime.now()
+        ));
+    }
+
+
+}

backend/src/main/java/com/oskarwiedeweg/cloudwork/error/dto/ErrorDto.java

@@ -0,0 +1,6 @@
+package com.oskarwiedeweg.cloudwork.error.dto;
+
+import java.time.LocalDateTime;
+
+public record ErrorDto(int status, String path, Object error, LocalDateTime timestamp) {
+}