package com.rongwei.bsserver.config;

import com.baomidou.mybatisplus.core.parser.ISqlParser;
import com.baomidou.mybatisplus.core.parser.ISqlParserFilter;
import com.baomidou.mybatisplus.core.parser.SqlParserHelper;
import com.baomidou.mybatisplus.extension.plugins.tenant.TenantHandler;
import com.baomidou.mybatisplus.extension.plugins.tenant.TenantSqlParser;
import com.rongwei.commonservice.service.RedisService;
import com.rongwei.rwadmincommon.system.vo.SysUserVo;
import com.rongwei.rwcommon.utils.StringUtils;
import com.rongwei.rwcommonconfig.config.ThreadLocalResource;
import com.rongwei.rwcommonconfig.config.interceptor.QuerySqlAdaptationInterceptor;
import com.rongwei.rwcommonconfig.config.interceptor.SaasPaginationInterceptor;
import net.sf.jsqlparser.expression.Expression;
import net.sf.jsqlparser.expression.StringValue;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.reflection.MetaObject;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by duyisong on 17/5/28.
 */
@EnableTransactionManagement
@Configuration
@MapperScan("com.rongwei.*.*.dao")
public class MybatisConfig {

    @Autowired
    private RedisService redisService;

    /**
     * 自定义查询sql多数据库适配
     * @return
     */
    @Bean
    public QuerySqlAdaptationInterceptor querySqlAdaptationInterceptor(){
        QuerySqlAdaptationInterceptor sqlAdaptation = new QuerySqlAdaptationInterceptor();
        return sqlAdaptation;
    }

    /*
     * 分页插件，自动识别数据库类型
     * 多租户，请参考官网【插件扩展】
     */
    @Bean
    public SaasPaginationInterceptor paginationInterceptor() {
        SaasPaginationInterceptor paginationInterceptor = new SaasPaginationInterceptor();
        /*
         * 【测试多租户】 SQL 解析处理拦截器<br>
         * 这里固定写成住户 1 实际情况你可以从cookie读取，因此数据看不到 【 麻花藤 】 这条记录（ 注意观察 SQL ）<br>
         */
        List<ISqlParser> sqlParserList = new ArrayList<>();
        TenantSqlParser tenantSqlParser = new TenantSqlParser();
        tenantSqlParser.setTenantHandler(new TenantHandler() {
            @Override
            public Expression getTenantId(boolean where) {
                String tenantId = null;
                String token = ThreadLocalResource.token.get();
                SysUserVo currUser = null;
                if(StringUtils.isNotEmpty(token)){
                    currUser = redisService.getLoginUser(token);
                }
                if(currUser != null && currUser.getTenantDo() != null){
                    tenantId = currUser.getTenantDo().getId();
                }

                return new StringValue(tenantId);
            }

            @Override
            public String getTenantIdColumn() {
                return "TENANTID";
            }

            @Override
            public boolean doTableFilter(String tableName) {
                // 这里可以判断是否过滤表,true表示过滤、false不过滤
                /*
                if ("user".equals(tableName)) {
                    return true;
                }*/
                return true;
            }
        });
//        sqlParserList.add(tenantSqlParser);
        paginationInterceptor.setSqlParserList(sqlParserList);
        paginationInterceptor.setSqlParserFilter(new ISqlParserFilter() {
            @Override
            public boolean doFilter(MetaObject metaObject) {
                MappedStatement ms = SqlParserHelper.getMappedStatement(metaObject);
                // 过滤自定义查询此时无租户信息约束【 麻花藤 】出现
                if ("com.rongwei.rwadmincommon.system.dao.getAll".equals(ms.getId())) {
                    return true;
                }
                return false;
            }
        });
        paginationInterceptor.setLimit(2000);
        return paginationInterceptor;
    }

}