package com.juick.configuration;

import com.juick.service.search.SearchService;
import org.apache.commons.dbcp2.BasicDataSource;
import org.apache.commons.lang3.StringUtils;
import org.springframework.context.annotation.*;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;

import javax.annotation.Resource;
import java.util.Collections;
import java.util.List;

/**
 * Created by aalexeev on 11/11/16.
 */
@Configuration
@EnableTransactionManagement
@PropertySource(value = {"classpath:juick.conf"})
@ComponentScan(basePackages = {"com.juick.service"})
public class DataConfiguration implements TransactionManagementConfigurer {
    @Resource
    private Environment env;

    // NOTE: The close() method will be called automatically with default @Bean settings
    // But Datasource interface has no close() method
    @Bean
    public BasicDataSource dataSource() {
        BasicDataSource dataSource = new BasicDataSource();

        dataSource.setDriverClassName(env.getProperty("datasource_driver", "com.mysql.jdbc.Driver"));
        dataSource.setUrl(env.getProperty("datasource_url"));
        dataSource.setUsername(env.getProperty("datasource_user", StringUtils.EMPTY));
        dataSource.setPassword(env.getProperty("datasource_password", StringUtils.EMPTY));

        dataSource.setValidationQuery("select 1");

        return dataSource;
    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        return new DataSourceTransactionManager(dataSource());
    }

    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return transactionManager();
    }

    @Bean
    @DependsOn("dataSource")
    public JdbcTemplate jdbcTemplate() {
        return new JdbcTemplate(dataSource());
    }

    @Bean
    public SearchService emptySearchService() {
        return new SearchService() {
            @Override
            public void setMaxResult(int maxResult) {
            }

            @Override
            public List<Integer> searchInAllMessages(String searchString, int messageIdBefore) {
                return Collections.emptyList();
            }

            @Override
            public List<Integer> searchByStringAndUser(String searchString, int userId, int messageIdBefore) {
                return Collections.emptyList();
            }
        };
    }
}