/*
Copyright [2020] [https://www.xiaonuo.vip]

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Snowy采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：

1.请不要删除和修改根目录下的LICENSE文件。
2.请不要删除和修改Snowy源码头部的版权声明。
3.请保留源码和相关描述文件的项目出处，作者声明等。
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5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/xiaonuobase/snowy
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 */
package com.huimv.sys.core.mybatis.sqlfilter;

import com.baomidou.mybatisplus.core.toolkit.PluginUtils;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.SystemMetaObject;
import org.springframework.util.AntPathMatcher;
import com.huimv.core.consts.SpringSecurityConstant;
import com.huimv.core.context.constant.ConstantContextHolder;
import com.huimv.core.exception.DemoException;
import com.huimv.core.util.HttpServletUtil;

import java.sql.Connection;

/**
 * 演示环境的sql过滤器，只放开select语句，其他语句都不放过
 *
 * @author yubaoshan
 * @date 2020/5/5 12:21
 */
@Intercepts({@Signature(type = StatementHandler.class, method = "prepare", args = {Connection.class, Integer.class})})
public class DemoProfileSqlInterceptor implements Interceptor {

    @Override
    public Object intercept(Invocation invocation) throws Throwable {

        // 演示环境没开，直接跳过此过滤器
        if (!ConstantContextHolder.getDemoEnvFlag()) {
            return invocation.proceed();
        }

        StatementHandler statementHandler = PluginUtils.realTarget(invocation.getTarget());
        MetaObject metaStatementHandler = SystemMetaObject.forObject(statementHandler);
        MappedStatement mappedStatement = (MappedStatement) metaStatementHandler.getValue("delegate.mappedStatement");

        if (SqlCommandType.SELECT.equals(mappedStatement.getSqlCommandType())) {
            return invocation.proceed();
        } else {

            //放开不进行安全过滤的接口
            for (String notAuthResource : SpringSecurityConstant.NONE_SECURITY_URL_PATTERNS) {
                AntPathMatcher antPathMatcher = new AntPathMatcher();
                if (antPathMatcher.match(notAuthResource, HttpServletUtil.getRequest().getRequestURI())) {
                    return invocation.proceed();
                }
            }
            throw new DemoException();
        }
    }

}
