package org.alexey.mvcbooks.config;

import org.alexey.mvcbooks.dao.BooksDAO;
import org.alexey.mvcbooks.dao.impl.BookDAOImpl;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

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

@Configuration
@ComponentScan("org.alexey.mvcbooks*")
@EnableTransactionManagement
// Load to Environment.
@PropertySource("classpath:ds-hibernate-cfg.properties")
public class ApplicationContextConfig {

    // The Environment class serves as the property holder
    // and stores all the properties loaded by the @PropertySource
    @Autowired
    private Environment env;



    @Bean
    public ResourceBundleMessageSource messageSource() {
        ResourceBundleMessageSource rb = new ResourceBundleMessageSource();
        // Load property in message/validator.properties
        rb.setBasenames(new String[] { "messages/validator"});
        return rb;
    }


    @Bean(name = "viewResolver")
    public InternalResourceViewResolver getViewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/pages/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }

    @Bean(name = "dataSource")
    public DataSource getDataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();

        dataSource.setDriverClassName(env.getProperty("ds.database-driver"));
        dataSource.setUrl(env.getProperty("ds.url"));
        dataSource.setUsername(env.getProperty("ds.username"));
        dataSource.setPassword(env.getProperty("ds.password"));

        return dataSource;
    }

    @Autowired
    @Bean(name = "sessionFactory")
    public SessionFactory getSessionFactory(DataSource dataSource) throws Exception {
        Properties properties = new Properties();

        // See: ds-hibernate-cfg.properties
        properties.put("hibernate.dialect", env.getProperty("hibernate.dialect"));
        properties.put("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
        properties.put("current_session_context_class", env.getProperty("current_session_context_class"));


        LocalSessionFactoryBean factoryBean = new LocalSessionFactoryBean();
        factoryBean.setPackagesToScan(new String[] { "org.alexey.mvcbooks.entity" });
        factoryBean.setDataSource(dataSource);
        factoryBean.setHibernateProperties(properties);
        factoryBean.afterPropertiesSet();
        //
        SessionFactory sf = factoryBean.getObject();
        return sf;
    }

    @Autowired
    @Bean(name = "transactionManager")
    public HibernateTransactionManager getTransactionManager(SessionFactory sessionFactory) {
        HibernateTransactionManager transactionManager = new HibernateTransactionManager(sessionFactory);

        return transactionManager;
    }

    @Bean(name = "bookDAO")
    public BooksDAO getBookDAO() {
        return new BookDAOImpl();
    }

}