import org.springframework.beans.BeansException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

import org.springframework.web.context.request.RequestContextHolder;

import org.springframework.web.context.request.ServletRequestAttributes;

import org.springframework.web.servlet.LocaleResolver;

import javax.servlet.http.HttpServletRequest;

import java.util.Locale;

@Component

public class SpringUtils implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

        this.applicationContext = applicationContext;

    }

    public static <T> T getBean(Class<T> tClass){

        return applicationContext.getBean(tClass);

    }

    public static <T> T getBean(String name, Class<T> type) {

        return applicationContext.getBean(name, type);

    }

    public static HttpServletRequest getCurrentReq() {

        ServletRequestAttributes requestAttrs = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();

        if (requestAttrs == null) {

            return null;

        }

        return requestAttrs.getRequest();

    }

    public static String getMessage(String code, Object... args) {

        LocaleResolver localeResolver = getBean(LocaleResolver.class);

        Locale locale = localeResolver.resolveLocale(getCurrentReq());

        return applicationContext.getMessage(code, args, locale);

    }

}