package cn.besteam.modules.shiro.authc.aop;

import cn.besteam.common.api.vo.Result;
import cn.besteam.common.aspect.annotation.OpenApi;
import cn.besteam.common.constant.CommonConstant;
import cn.besteam.common.constant.ErrorCode;
import cn.besteam.modules.shiro.authc.util.EnvUtils;
import cn.besteam.modules.system.entity.SysUser;
import cn.besteam.modules.system.service.ISysUserService;
import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

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

/**
 * 登录验证Interceptor
 *
 * @author jacob
 */
@Component
@Slf4j
public class LoginValidateInterceptor extends HandlerInterceptorAdapter {

    @Autowired
    private ISysUserService sysUserService;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        if ("OPTIONS".equalsIgnoreCase(request.getMethod())) {
            return true;
        }
        String token = request.getHeader(CommonConstant.X_ACCESS_TOKEN);
        if (token == null && request.getCookies() != null) {
            for (Cookie cookie : request.getCookies()) {
                if (CommonConstant.X_ACCESS_TOKEN.equals(cookie.getName())) {
                    token = cookie.getValue();
                    break;
                }
            }
        }
        SysUser user = sysUserService.getByToken(token);
        EnvUtils.addUser(user);
        if (handler instanceof HandlerMethod && null != ((HandlerMethod) handler).getMethodAnnotation(OpenApi.class)) {
            return true;
        }
        if (user == null) {
            //设置返回编码
            response.setCharacterEncoding("UTF-8");
            //设置返回类型和内容编码
            response.setContentType("application/json;charset=UTF-8");
            //输出数据部分
            response.getWriter().write(JSON.toJSONString(Result.error(ErrorCode.USER_LOGIN_REQUIRE)));
            return false;
        }
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

        EnvUtils.remove();
    }

}