/**
    * This file Copyright (c) 2018 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.ui.field.factory;
  
  import info.magnolia.ui.field.FieldDefinition;
  import info.magnolia.ui.framework.databinding.registry.ComponentTypeDefinitionRegistry;
  import info.magnolia.ui.framework.databinding.registry.FieldTypeDefinition;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.api.ioc.UiContextScoped;
  
  import javax.inject.Inject;
  
  import org.slf4j.LoggerFactory;
  
  import com.vaadin.data.HasValue;
  import com.vaadin.ui.Component;
  
  /**
   * Produces a Vaadin field based on its definition.
   * Field factory is resolved via {@link ComponentTypeDefinitionRegistry}.
   */
  @UiContextScoped
  public class FormFieldFactory {
  
      private static final org.slf4j.Logger log = LoggerFactory.getLogger(FormFieldFactory.class);
  
      private final ComponentProvider componentProvider;
  
      private final ComponentTypeDefinitionRegistry componentTypeDefinitionRegistry;
  
      @Inject
      public FormFieldFactory(ComponentProvider componentProvider, ComponentTypeDefinitionRegistry componentTypeDefinitionRegistry) {
          this.componentProvider = componentProvider;
          this.componentTypeDefinitionRegistry = componentTypeDefinitionRegistry;
      }
  
      /**
       * Based on the {@link FieldDefinition}, get the related {@link FieldFactory} initialized with the input parameters.
       *
       * @return related {@link FieldFactory} or null in case of exception or if no related factory is defined.
       */
      public <TYPE, FIELD extends HasValue<TYPE> & Component> FIELD createField(FieldDefinition<TYPE> definition, Object... parameters) {
          final FieldTypeDefinition<TYPE> fieldTypeDefinition = componentTypeDefinitionRegistry.getByDefinition(definition);
          if (fieldTypeDefinition == null) {
              return null;
          }
  
          Class<? extends FieldFactory<TYPE>> factoryClass = fieldTypeDefinition.getFactoryClass();
          if (factoryClass == null) {
              log.warn("No factory class set for definition class [{}]. Please check your configuration.", definition.getClass().getName());
              return null;
          }
  
          Object[] combinedParameters = new Object[parameters.length + 1];
          combinedParameters[0] = definition;
          System.arraycopy(parameters, 0, combinedParameters, 1, parameters.length);
  
          return componentProvider.newInstance(factoryClass, combinedParameters).createField();
      }
  }