package com.myoa.engineering.crawl.ppomppu.processor.configuration;

import com.myoa.engineering.crawl.ppomppu.processor.configuration.properties.DatasourceProperties;
import com.myoa.engineering.crawl.ppomppu.processor.configuration.properties.DatasourceProperties.DataSourcePropertiesUnit;
import com.myoa.engineering.crawl.ppomppu.processor.configuration.properties.HibernateProperties;
import com.myoa.engineering.crawl.ppomppu.processor.configuration.properties.HikariProperties;
import com.myoa.engineering.crawl.ppomppu.processor.domain.BaseScanDomain;
import com.myoa.engineering.crawl.ppomppu.processor.infrastructure.repository.BaseScanRepository;
import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import lombok.NonNull;
import org.hibernate.cfg.AvailableSettings;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;

@Configuration
@EnableJpaRepositories(basePackageClasses = BaseScanRepository.class,
    entityManagerFactoryRef = "ppomppuNotifierProcessorEntityManagerFactory",
    transactionManagerRef = "ppomppuNotifierProcessorTransactionManager"
)
public class PpomppuDatasourceConfiguration {

    private static final String DATA_SOURCE_UNIT_NAME = "ppomppu";

    private final DatasourceProperties dataSourceProeprties;
    private final HikariProperties hikariProperties;
    private final HibernateProperties hibernateProperties;

    public PpomppuDatasourceConfiguration(DatasourceProperties dataSourceProeprties,
                                          HikariProperties hikariProperties,
                                          HibernateProperties hibernateProperties) {
        this.dataSourceProeprties = dataSourceProeprties;
        this.hikariProperties = hikariProperties;
        this.hibernateProperties = hibernateProperties;
    }

    @Bean(name = "ppomppuNotifierProcessorDataSource")
    public DataSource dataSource() {
        DataSourcePropertiesUnit dataSourcePropertiesUnit = dataSourceProeprties.find(DATA_SOURCE_UNIT_NAME);

        final HikariConfig hikariConfig = new HikariConfig();
        hikariConfig.setJdbcUrl(dataSourcePropertiesUnit.toCompletedJdbcUrl());
        hikariConfig.setUsername("sa");
        hikariConfig.setPassword("sa");
        hikariConfig.setAutoCommit(hikariProperties.getAutoCommit());
        hikariConfig.setMaximumPoolSize(hikariProperties.getMaximumPoolSize());
        hikariConfig.setMinimumIdle(hikariProperties.getMinimumIdle());
        if (hikariProperties.getMaximumPoolSize() > hikariProperties.getMinimumIdle()) {
            hikariConfig.setIdleTimeout(hikariProperties.getIdleTimeout());
        }
        hikariConfig.setValidationTimeout(hikariProperties.getValidationTimeout());
        hikariConfig.setConnectionTimeout(hikariProperties.getConnectionTimeout());
        hikariConfig.setMaxLifetime(hikariProperties.getMaxLifetime());

        final DataSource dataSource = new HikariDataSource(hikariConfig);
        return dataSource;
    }

    @Bean("ppomppuNotifierProcessorEntityManagerFactory")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(
        EntityManagerFactoryBuilder builder,
        @Qualifier("ppomppuNotifierProcessorDataSource") DataSource dataSource) {
        return builder.dataSource(dataSource)
                      .packages(BaseScanDomain.class)
                      .properties(getPropsMap(DATA_SOURCE_UNIT_NAME))
                      .build();
    }

    @Bean("ppomppuNotifierProcessorTransactionManager")
    public PlatformTransactionManager transactionManager(
        @Qualifier("ppomppuNotifierProcessorEntityManagerFactory") EntityManagerFactory entityManagerFactory) {
        return new JpaTransactionManager(entityManagerFactory);
    }

    public static Properties getProps(@NonNull HibernateProperties.HibernatePropertiesUnit hibernateProperties) {
        Properties properties = new Properties();
        properties.put(AvailableSettings.DIALECT, hibernateProperties.getDialect());
        properties.put(AvailableSettings.FORMAT_SQL, hibernateProperties.getFormatSql());
        properties.put(AvailableSettings.SHOW_SQL, hibernateProperties.getShowSql());
        properties.put(AvailableSettings.HBM2DDL_AUTO, hibernateProperties.getHbm2ddlAuto());
        properties.put(AvailableSettings.CONNECTION_PROVIDER_DISABLES_AUTOCOMMIT,
                       hibernateProperties.getDisableAutoCommit());
        properties.put(AvailableSettings.IMPLICIT_NAMING_STRATEGY,
                       "org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy");
        properties.put(AvailableSettings.PHYSICAL_NAMING_STRATEGY,
                       "org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy");
        properties.put(AvailableSettings.GENERATE_STATISTICS, "false");
        properties.put(AvailableSettings.GLOBALLY_QUOTED_IDENTIFIERS, "true");
        properties.put(AvailableSettings.GLOBALLY_QUOTED_IDENTIFIERS_SKIP_COLUMN_DEFINITIONS, "true");
        properties.put(AvailableSettings.STATEMENT_BATCH_SIZE, "20");
        properties.put(AvailableSettings.ORDER_INSERTS, "true");
        properties.put(AvailableSettings.ORDER_UPDATES, "true");
        properties.put(AvailableSettings.BATCH_VERSIONED_DATA, "true");
        properties.put(AvailableSettings.USE_NEW_ID_GENERATOR_MAPPINGS, "false");
        return properties;
    }

    public Map<String, String> getPropsMap(@NonNull String unitName) {
        return convertPropertiestoMaps(getProps(hibernateProperties.find(unitName)));
    }

    public Map<String, String> convertPropertiestoMaps(Properties properties) {
        Map<String, String> propertiesMap = new HashMap<>();

        for (Enumeration<?> e = properties.propertyNames(); e.hasMoreElements(); ) {
            String key = (String) e.nextElement();
            propertiesMap.put(key, properties.getProperty(key));
        }
        return propertiesMap;
    }

}