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structure Client for Five Faces

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package com.fivefaces.structureclient.config.security;

import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.RequiredArgsConstructor;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;

@Component
@RequiredArgsConstructor
public class JsonErrorResponseSender {

    private final ObjectMapper objectMapper;

    public void sendErrorResponse(HttpServletResponse response, int httpStatus, String message) throws IOException {
        response.setStatus(httpStatus);
        response.setContentType(MediaType.APPLICATION_JSON_VALUE);
        response.setCharacterEncoding(StandardCharsets.UTF_8.name());
        objectMapper.writeValue(response.getWriter(), new HashMap<>(){{
            put("message", message);
        }});
        response.getWriter().flush();
    }
}