package com.lunhan.xxx.host;

import com.lunhan.xxx.common.ExecutedResult;
import com.lunhan.xxx.common.config.SysConfig;
import com.lunhan.xxx.common.jwt.JWTUtil;
import com.lunhan.xxx.common.jwt.LoginUserDTO;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 基础controller
 */
public class BasicController {

    /**
     * 获取当前请求上下文的“HttpServletRequest”对象
     */
    protected HttpServletRequest ServletRequest() {
        RequestAttributes reqAttributes = RequestContextHolder.currentRequestAttributes();
        if (null == reqAttributes) {
            return null;
        }
        ServletRequestAttributes servletReqAttributes = (ServletRequestAttributes)reqAttributes;
        return servletReqAttributes.getRequest();
    }

    /**
     * 获取当前请求上下文的“HttpServletResponse”对象
     */
    protected HttpServletResponse ServletResponse() {
        RequestAttributes reqAttributes = RequestContextHolder.currentRequestAttributes();
        if (null == reqAttributes) {
            return null;
        }
        ServletRequestAttributes servletReqAttributes = (ServletRequestAttributes)reqAttributes;
        return servletReqAttributes.getResponse();
    }

    protected String getToken() {
        return this.ServletRequest().getHeader(SysConfig.getTokenHeader());
    }

    protected String getHeader(String key) {
        return this.ServletRequest().getHeader(key);
    }

    protected LoginUserDTO getTokenUser() {
        return JWTUtil.getUser(this.getToken());
    }

    protected <T> ExecutedResult<T> success(T data) {
        return ExecutedResult.success(data);
    }

    protected <T> ExecutedResult<T> failed(String msg) {
        return ExecutedResult.failed(msg);
    }
}