package cc.mrbird.febs.common.interceptor;

import cc.mrbird.febs.common.entity.FebsResponse;
import cc.mrbird.febs.common.utils.RedisUtils;
import cc.mrbird.febs.common.utils.SpringContextUtil;
import cc.mrbird.febs.dapp.entity.DappMemberEntity;
import cc.mrbird.febs.dapp.mapper.DappMemberDao;
import cn.hutool.core.util.StrUtil;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author 
 * @date 2022-03-17
 **/
@Slf4j
public class DappInterceptor implements HandlerInterceptor {

    private final DappMemberDao dappMemberDao = SpringContextUtil.getBean(DappMemberDao.class);

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if ("OPTIONS".equals(request.getMethod().toUpperCase())) {
            return true;
        }

        String headAddress = request.getHeader("token");
        String chain = request.getHeader("chain");
        log.info("进入拦截:{}", headAddress);
        if (StrUtil.isBlank(headAddress)) {
            responseUnAuth(response);
            return false;
        }

        DappMemberEntity memberEntity = dappMemberDao.selectByAddress(headAddress, chain);
        if (memberEntity == null) {
            responseUnAuth(response);
            return false;
        }

        request.getSession().setAttribute("member", memberEntity);
        return true;
    }

    private void responseUnAuth(HttpServletResponse response) throws IOException {
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/json; charset=utf-8");
        response.getWriter().write(new ObjectMapper().writeValueAsString(new FebsResponse().code(HttpStatus.UNAUTHORIZED)));
    }
}