/**
 * Copyright 2018-2020 stylefeng & fengshuonan (sn93@qq.com)
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.
 */
package cn.stylefeng.guns.config.datasource;

import cn.stylefeng.guns.base.db.collector.SqlSessionFactoryCreator;
import cn.stylefeng.guns.base.db.context.DataSourceContext;
import cn.stylefeng.guns.base.db.context.SqlSessionFactoryContext;
import cn.stylefeng.guns.base.db.exception.DataSourceInitException;
import cn.stylefeng.roses.core.config.properties.DruidProperties;
import cn.stylefeng.roses.core.mutidatasource.mybatis.OptionalSqlSessionTemplate;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.session.SqlSessionFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.Primary;

import javax.sql.DataSource;

import static cn.stylefeng.guns.base.db.context.DataSourceContext.MASTER_DATASOURCE_NAME;

/**
 * 多数据源配置<br/>
 * <p>
 * 注：由于引入多数据源，所以让spring事务的aop要在多数据源切换aop的后面
 *
 * @author stylefeng
 * @Date 2017/5/20 21:58
 */
@Slf4j
@Configuration
@Import(SqlSessionFactoryCreator.class)
public class SqlSessionFactoryConfig {

    /**
     * 主sqlSessionFactory
     */
    @Primary
    @Bean
    public SqlSessionFactory sqlSessionFactoryPrimary(@Qualifier("dataSourcePrimary") DataSource dataSource,
                                                      SqlSessionFactoryCreator sqlSessionFactoryCreator) {
        return sqlSessionFactoryCreator.createSqlSessionFactory(dataSource);
    }

    /**
     * 多数据源sqlSessionTemplate切换模板
     */
    @Bean(name = "gunsSqlSessionTemplate")
    public OptionalSqlSessionTemplate gunsSqlSessionTemplate(@Qualifier("sqlSessionFactoryPrimary") SqlSessionFactory sqlSessionFactoryPrimary,
                                                             SqlSessionFactoryCreator sqlSessionFactoryCreator,
                                                             DruidProperties druidProperties) {

        //初始化数据源容器
        try {
            DataSourceContext.initDataSource(druidProperties);
        } catch (Exception e) {
            throw new DataSourceInitException(DataSourceInitException.ExEnum.INIT_DATA_SOURCE_ERROR);
        }

        //添加主数据源的SqlSessionFactory
        SqlSessionFactoryContext.addSqlSessionFactory(MASTER_DATASOURCE_NAME, sqlSessionFactoryPrimary);

        //初始化其他数据源的SqlSessionFactory的容器
        SqlSessionFactoryContext.initBaseSqlSessionFactory(sqlSessionFactoryCreator);

        return new OptionalSqlSessionTemplate(sqlSessionFactoryPrimary, SqlSessionFactoryContext.getSqlSessionFactorys());
    }

}