/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.maven.shared.release.transform.jdom2;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Properties;
  
  import org.apache.maven.model.Build;
  import org.apache.maven.model.Dependency;
  import org.apache.maven.model.DependencyManagement;
  import org.apache.maven.model.Model;
  import org.apache.maven.model.Parent;
  import org.apache.maven.model.Profile;
  import org.apache.maven.model.Reporting;
  import org.apache.maven.model.Scm;
  import org.jdom2.Document;
  import org.jdom2.Element;
  import org.jdom2.Text;
  
  /**
   * JDOM2 implementation of poms PROJECT element
   *
   * @author Robert Scholte
   * @since 3.0
   */
  public class JDomModel extends Model {
      private final Element project;
  
      private final JDomModelBase modelBase;
  
      /**
       * <p>Constructor for JDomModel.</p>
       *
       * @param document a {@link org.jdom2.Document} object
       */
      public JDomModel(Document document) {
          this(document.getRootElement());
      }
  
      /**
       * <p>Constructor for JDomModel.</p>
       *
       * @param project a {@link org.jdom2.Element} object
       */
      public JDomModel(Element project) {
          this.project = project;
          this.modelBase = new JDomModelBase(project);
      }
  
      @Override
      public Build getBuild() {
          return modelBase.getBuild();
      }
  
      @Override
      public List<Dependency> getDependencies() {
          return modelBase.getDependencies();
      }
  
      @Override
      public DependencyManagement getDependencyManagement() {
          return modelBase.getDependencyManagement();
      }
  
      @Override
      public Parent getParent() {
          Element elm = getParentElement();
          if (elm == null) {
              return null;
          } else {
              // this way scm setters change DOM tree immediately
              return new JDomParent(elm);
          }
      }
  
      private Element getParentElement() {
          return project.getChild("parent", project.getNamespace());
      }
  
      @Override
      public List<Profile> getProfiles() {
         Element profilesElm = project.getChild("profiles", project.getNamespace());
         if (profilesElm == null) {
             return Collections.emptyList();
         } else {
             List<Element> profileElms = profilesElm.getChildren("profile", project.getNamespace());
 
             List<Profile> profiles = new ArrayList<>(profileElms.size());
 
             for (Element profileElm : profileElms) {
                 profiles.add(new JDomProfile(profileElm));
             }
 
             return profiles;
         }
     }
 
     @Override
     public Properties getProperties() {
         Element properties = project.getChild("properties", project.getNamespace());
 
         if (properties == null) {
             return null;
         } else {
             return new JDomProperties(properties);
         }
     }
 
     @Override
     public Reporting getReporting() {
         Element reporting = project.getChild("reporting", project.getNamespace());
 
         if (reporting == null) {
             return null;
         } else {
             return new JDomReporting(reporting);
         }
     }
 
     @Override
     public void setScm(Scm scm) {
         if (scm == null) {
             JDomUtils.rewriteElement("scm", null, project, project.getNamespace());
         } else {
             Element scmRoot = new Element("scm");
             scmRoot.addContent("\n  ");
 
             // Write current values to JDOM2 tree
             Scm jdomScm = new JDomScm(scmRoot);
             jdomScm.setConnection(scm.getConnection());
             jdomScm.setDeveloperConnection(scm.getDeveloperConnection());
             jdomScm.setTag(scm.getTag());
             jdomScm.setUrl(scm.getUrl());
 
             project.addContent("\n  ").addContent(scmRoot).addContent("\n");
         }
     }
 
     @Override
     public Scm getScm() {
         Element elm = project.getChild("scm", project.getNamespace());
         if (elm == null) {
             return null;
         } else {
             // this way scm setters change DOM tree immediately
             return new JDomScm(elm);
         }
     }
 
     @Override
     public void setVersion(String version) {
         Element versionElement = project.getChild("version", project.getNamespace());
 
         String parentVersion;
         Element parent = getParentElement();
         if (parent != null) {
             parentVersion = parent.getChildTextTrim("version", project.getNamespace());
         } else {
             parentVersion = null;
         }
 
         if (versionElement == null) {
             if (!version.equals(parentVersion)) {
                 // we will add this after artifactId, since it was missing but different from the inherited version
                 Element artifactIdElement = project.getChild("artifactId", project.getNamespace());
                 int index = project.indexOf(artifactIdElement);
 
                 versionElement = new Element("version", project.getNamespace());
                 versionElement.setText(version);
                 project.addContent(index + 1, new Text("\n  "));
                 project.addContent(index + 2, versionElement);
             }
         } else {
             JDomUtils.rewriteValue(versionElement, version);
         }
     }
 }