@Configuration
public class MongoDbConfig extends AbstractMongoConfiguration {

  private Environment env;

  @Autowired
  public MongoDbConfig(Environment env) {
    this.env = env;
  }

  @Override
  public MongoClient mongoClient() {
    return new MongoClient(env.getProperty("spring.data.mongodb.host"));
  }

  public String getDatabaseName() {
    return Optional.ofNullable(env.getProperty("spring.data.mongodb.database")).orElse("");
  }

  @Override
  public MongoDbFactory mongoDbFactory() {
    return new SimpleMongoDbFactory(mongoClient(), getDatabaseName());
  }

  @Bean
  public TarotCardCovnerter tarotCardConverter() {
    return new TarotCardReadConverter();
  }

  @Bean
  public MongoCustomConversions mongoCustomConversions() {
    List<Converter<?, ?>> converterList = new ArrayList<>();
    converterList.add(tarotCardReadConverter());
    return new MongoCustomConversions(converterList);
  }

  @Bean
  @Override
  public MappingMongoConverter mappingMongoConverter() {
    MongoMappingContext mappingContext = new MongoMappingContext();
    DbRefResolver dbRefResolver = new DefaultDbRefResolver(mongoDbFactory());
    MappingMongoConverter mongoConverter = new MappingMongoConverter(dbRefResolver, mappingContext);
    mongoConverter.setCustomConversions(mongoCustomConversions());
    return mongoConverter;
  }

  @Bean
  @Override
  public MongoTemplate mongoTemplate() {
    return new MongoTemplate(mongoDbFactory(), mappingMongoConverter());
  }

}