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package org.molgenis.data.meta.model;

import static java.util.Objects.requireNonNull;

import org.molgenis.data.AbstractSystemEntityFactory;
import org.molgenis.data.Entity;
import org.molgenis.data.EntityFactory;
import org.molgenis.data.populate.EntityPopulator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * {@link Attribute Attribute meta data} factory. This factory does not extend from {@link
 * AbstractSystemEntityFactory} to prevent a circular bean dependency.
 */
@Component
public class AttributeFactory implements EntityFactory {
  private final EntityPopulator entityPopulator;
  private AttributeMetadata attributeMetadata;

  public AttributeFactory(EntityPopulator entityPopulator) {
    this.entityPopulator = requireNonNull(entityPopulator);
  }

  @Override
  public String getEntityTypeId() {
    return AttributeMetadata.ATTRIBUTE_META_DATA;
  }

  @Override
  public Attribute create() {
    Attribute attribute = new Attribute(attributeMetadata);
    entityPopulator.populate(attribute);
    return attribute;
  }

  @Override
  public Attribute create(String entityId) {
    Attribute attribute = create();
    attribute.set(AttributeMetadata.ID, entityId);
    return attribute;
  }

  @Override
  public Attribute create(Entity entity) {
    return new Attribute(entity);
  }

  // setter injection instead of constructor injection to avoid unresolvable circular dependencies
  @Autowired
  public void setAttributeMetadata(AttributeMetadata attributeMetadata) {
    this.attributeMetadata = requireNonNull(attributeMetadata);
  }

  public AttributeMetadata getAttributeMetadata() {
    return attributeMetadata;
  }
}