/**
    * 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.contentapp.registry.validator;
  
  import info.magnolia.config.registry.DefinitionProvider;
  import info.magnolia.ui.api.app.AppDescriptor;
  import info.magnolia.ui.api.app.SubAppDescriptor;
  import info.magnolia.ui.contentapp.detail.ConfiguredDetailSubAppDescriptor;
  import info.magnolia.ui.form.definition.TabDefinition;
  import info.magnolia.ui.form.field.definition.ConfiguredFieldDefinition;
  import info.magnolia.ui.form.field.definition.FieldDefinition;
  import info.magnolia.ui.form.fieldtype.registry.AbstractFieldTypeDefinitionValidator;
  import info.magnolia.ui.form.fieldtype.registry.FieldTypeDefinitionRegistry;
  import info.magnolia.util.OptionalConsumer;
  
  import java.util.Collection;
  
  import javax.inject.Inject;
  
  import org.apache.commons.lang3.StringUtils;
  
  /**
   * Validates {@link info.magnolia.ui.api.app.AppDescriptor}'s reference to {@link info.magnolia.ui.form.field.definition.FieldDefinition}.
   */
  public class AppDescriptorValidator extends AbstractFieldTypeDefinitionValidator<AppDescriptor> {
  
      @Inject
      public AppDescriptorValidator(FieldTypeDefinitionRegistry fieldTypeDefinitionRegistry) {
          super(fieldTypeDefinitionRegistry);
      }
  
      @Override
      protected void validateDefinition(Collection<DefinitionProvider.Problem> problems, DefinitionProvider<AppDescriptor> definitionProvider) {
          for (SubAppDescriptor subAppDescriptor : definitionProvider.get().getSubApps().values()) {
              if (subAppDescriptor instanceof ConfiguredDetailSubAppDescriptor) {
                  ConfiguredDetailSubAppDescriptor descriptor = (ConfiguredDetailSubAppDescriptor) subAppDescriptor;
                  if (descriptor.getEditor() != null && descriptor.getEditor().getForm() != null) {
                      descriptor.getEditor()
                              .getForm()
                              .getTabs()
                              .forEach(tabDefinition -> tabDefinition.getFields().forEach(fieldDefinition -> {
                                  final String path = getPath(definitionProvider, descriptor, tabDefinition, fieldDefinition);
                                  OptionalConsumer.of(getFieldTypeDefinitionRegistry().getByDefinitionType(fieldDefinition.getClass()))
                                          .ifPresent(fieldTypeDefinitionProvider -> validateFieldDefinition(problems, fieldTypeDefinitionProvider, path, definitionProvider.getMetadata()))
                                          .ifNotPresent(() -> reportMissingFieldTypeDefinition(problems, fieldDefinition, path));
                              }));
                  }
              }
          }
      }
  
      private String getPath(DefinitionProvider<AppDescriptor> definitionProvider, ConfiguredDetailSubAppDescriptor descriptor, TabDefinition tabDefinition, FieldDefinition fieldDefinition) {
          String path = definitionProvider.get().getName() + "/subApps/" + descriptor.getName() + "/editor/form/tabs/" + tabDefinition.getName() + "/fields/" + fieldDefinition.getName();
          if (fieldDefinition instanceof ConfiguredFieldDefinition) {
              ConfiguredFieldDefinition configuredFieldDefinition = (ConfiguredFieldDefinition) fieldDefinition;
              if (StringUtils.isNotBlank(configuredFieldDefinition.getFieldType())) {
                  return path + "@fieldType";
              }
          }
          return path + "@class";
      }
  }