package com.ltkj.framework.interceptor;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.google.gson.Gson;
import com.ltkj.db.DataSourceConfig;
import com.ltkj.db.DataSourceContextHolder;
import com.ltkj.framework.config.DruidConfig;
import com.ltkj.hosp.domain.DictHosp;
import com.ltkj.hosp.service.IDictHospService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

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

/**
 * @Company: 西安路泰科技有限公司
 * @Author: zhaowenxuan
 * @Date: 2025/2/7 11:07
 */
@Component
@Order(1)
public class DBChangeInterceptor implements HandlerInterceptor {

    @Autowired
    private IDictHospService dictHospService;
    @Autowired
    private DataSourceConfig dataSourceConfig;
//    @Autowired
//    private DruidConfig druidConfig;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException {
        String hospId = request.getHeader("hospId");
        if (StrUtil.isBlank(hospId)){
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            response.setContentType("application/json;charset=UTF-8");
            JSONObject object = JSONUtil.createObj();
            object.putOpt("code",401);
            object.putOpt("msg","找不到院区编号");
            response.getWriter().write(JSONUtil.toJsonStr(object));
            return false;
        }
//        DictHosp hosp = null;
        try {
            DataSourceContextHolder.setDataSourceKey("default");
            LambdaQueryWrapper<DictHosp> wrapper = new LambdaQueryWrapper<>();
            wrapper.eq(DictHosp::getCode,hospId);
            DictHosp hosp = dictHospService.getOne(wrapper);
            if (hosp == null || hosp.getDbname() == null || hosp.getDbname().trim().isEmpty()) {
                response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                response.setContentType("application/json;charset=UTF-8");
                response.getWriter().write("{\"message\":\"401：找不到院区数据\"}");
                return false;
            }
            dataSourceConfig.addDataSource(hosp.getDbname());
//            druidConfig.addDataSource(hosp.getDbname());
            DataSourceContextHolder.setDataSourceKey(hosp.getDbname());
        } catch (IOException e) {
            return false;
        }

        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        DataSourceContextHolder.setDataSourceKey("default");
        DataSourceContextHolder.clear();
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}