package org.springblade.common.utils;

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 javax.servlet.http.HttpServletRequest;

/**
 * spring 工具类
 * @author zhongrj
 */
@Component
public class SpringUtils implements ApplicationContextAware {


    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext)throws BeansException {
        if (SpringUtils.applicationContext == null) {
			SpringUtils.applicationContext = applicationContext;
        }
    }

    public static HttpServletRequest getRequestHeaders(){
		ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
		// get the request
		HttpServletRequest request = requestAttributes.getRequest();
		// 返回request 对象
		return request;
	}


	/**
	 * 获取角色别名
	 * @param key
	 * @return
	 */
	public static String getRequestParam(String key){
		// get the request
		HttpServletRequest requestHeaders = getRequestHeaders();
		// 返回request 对象
		return requestHeaders.getHeader(key);
	}

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }


    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }


    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }

    /**
     * 获取当前环境
     */
    public static String getActiveProfile() {
        return applicationContext.getEnvironment().getActiveProfiles()[0];
    }
}