/*
 * Copyright (C) 2014 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jboss.errai.forge.ui.features;

import org.jboss.errai.forge.config.ProjectConfig;
import org.jboss.errai.forge.config.ProjectProperty;
import org.jboss.errai.forge.config.SerializableSet;
import org.jboss.errai.forge.facet.aggregate.AggregatorFacetReflections.Feature;
import org.jboss.errai.forge.facet.aggregate.CoreFacet;
import org.jboss.forge.addon.facets.FacetFactory;
import org.jboss.forge.addon.facets.constraints.FacetConstraint;
import org.jboss.forge.addon.projects.Project;
import org.jboss.forge.addon.ui.context.UIContext;
import org.jboss.forge.addon.ui.metadata.UICommandMetadata;
import org.jboss.forge.addon.ui.util.Categories;
import org.jboss.forge.addon.ui.util.Metadata;

import javax.inject.Inject;

@FacetConstraint({ CoreFacet.class })
public class AddErraiFeatureCommand extends AbstractFeatureCommand {

  @Inject
  private FacetFactory facetFactory;

  @Override
  protected FeatureFilter getFilter() {
    return new FeatureFilter() {
      @Override
      public boolean filter(Feature feature, Project project) {
        return !project.hasFacet(feature.getFeatureClass());
      }
    };
  }
  
  @Override
  public UICommandMetadata getMetadata(UIContext context) {
    return Metadata.forCommand(AddErraiFeatureCommand.class)
            .name("Errai: Add Features")
            .category(Categories.create("Project", "Errai"))
            .description("Add the necessary configurations for using Errai features in a Maven project.");
  }

  protected void performOperation(Project project, Feature feature) throws Exception {
    try {
      facetFactory.install(project, feature.getFeatureClass());

      final ProjectConfig projectConfig = project.getFacet(ProjectConfig.class);
      SerializableSet installed = projectConfig.getProjectProperty(ProjectProperty.INSTALLED_FEATURES,
              SerializableSet.class);
      if (installed == null)
        installed = new SerializableSet();

      installed.add(feature.getShortName());

      projectConfig.setProjectProperty(ProjectProperty.INSTALLED_FEATURES, installed);
    }
    catch (Exception e) {
      throw new Exception("Could not install " + feature.getLongName(), e);
    }
  }

  @Override
  protected String getSelectionDescription() {
    return "The selected Errai Features will be added to your project,"
            + " including any necessary configurations and other required features.";
  }

  @Override
  protected String getSelectionLabel() {
    return "Select Errai Features to Add";
  }

}