LF8/src/main/java/de/szut/lf8_starter/exceptionHandling/GlobalExceptionHandler.java

package de.szut.lf8_starter.exceptionHandling;

import io.swagger.v3.oas.annotations.media.Content;
import io.swagger.v3.oas.annotations.responses.ApiResponse;
import io.swagger.v3.oas.annotations.responses.ApiResponses;
import jakarta.validation.ConstraintViolationException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.context.request.WebRequest;

import java.util.Date;

@ControllerAdvice
@ApiResponses(value = {
        @ApiResponse(responseCode = "500", description = "invalid JSON posted",
                content = @Content)
})
public class GlobalExceptionHandler {

    @ExceptionHandler(ResourceNotFoundException.class)
    public ResponseEntity<?> handleHelloEntityNotFoundException(ResourceNotFoundException ex, WebRequest request) {
        ErrorDetails errorDetails = new ErrorDetails(new Date(), ex.getMessage(), request.getDescription(false));
        return new ResponseEntity<>(errorDetails, HttpStatus.NOT_FOUND);
    }

    @ExceptionHandler(Exception.class)
    public ResponseEntity<ErrorDetails> handleAllOtherExceptions(Exception ex, WebRequest request) {
        ErrorDetails errorDetails = new ErrorDetails(new Date(), ex.getClass() + " " + ex.getMessage(), request.getDescription(false));

        return new ResponseEntity<>(errorDetails, HttpStatus.INTERNAL_SERVER_ERROR);
    }

    @ExceptionHandler(MethodArgumentNotValidException.class)
    public ResponseEntity<ErrorDetails> handleMethodArgumentNotValidException(MethodArgumentNotValidException ex, WebRequest request) {
        ErrorDetails errorDetails = new ErrorDetails(new Date(), ex.getMessage(), request.getDescription(false));

        return new ResponseEntity<>(errorDetails, HttpStatus.BAD_REQUEST);
    }

    @ExceptionHandler(ConstraintViolationException.class)
    public ResponseEntity<ErrorDetails> handleConstraintViolationException(ConstraintViolationException ex, WebRequest request) {
        String errorMessage = ex.getConstraintViolations().stream().findFirst().get().getMessage();

        ErrorDetails errorDetails = new ErrorDetails(new Date(), errorMessage, request.getDescription(false));

        return new ResponseEntity<>(errorDetails, HttpStatus.BAD_REQUEST);
    }
}