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package com.github.carlopantaleo.jmodel.configuration;

import org.apache.tomcat.dbcp.dbcp2.BasicDataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;
import java.util.Properties;

@Configuration
@EnableTransactionManagement
public class HibernateConfiguration {
    @Bean
    public LocalSessionFactoryBean sessionFactory(ApplicationContext ctx) {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setHibernateProperties(hibernateProperties());
        sessionFactory.setMappingDirectoryLocations(ctx.getResource("classpath:hbm/generated"));

        return sessionFactory;
    }

    @Bean
    public DataSource dataSource() {
        BasicDataSource dataSource = new BasicDataSource();
        dataSource.setDriverClassName("org.h2.Driver");
        dataSource.setUrl("jdbc:h2:mem:db;DB_CLOSE_DELAY=-1");
        dataSource.setUsername("sa");
        dataSource.setPassword("sa");

        return dataSource;
    }

    @Bean
    public PlatformTransactionManager hibernateTransactionManager(LocalSessionFactoryBean sessionFactory) {
        HibernateTransactionManager transactionManager
                = new HibernateTransactionManager();
        transactionManager.setSessionFactory(sessionFactory.getObject());
        return transactionManager;
    }

    private Properties hibernateProperties() {
        Properties hibernateProperties = new Properties();
        hibernateProperties.setProperty(
                "hibernate.hbm2ddl.auto", "create-drop");
        hibernateProperties.setProperty(
                "hibernate.dialect", "org.hibernate.dialect.H2Dialect");

        return hibernateProperties;
    }
}