/*
    * 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.resolver.internal.ant.types;
  
  import java.io.File;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.maven.resolver.internal.ant.ProjectWorkspaceReader;
  import org.apache.maven.resolver.internal.ant.tasks.RefTask;
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.Task;
  import org.apache.tools.ant.types.Reference;
  
  /**
   */
  public class Artifact extends RefTask implements ArtifactContainer {
  
      private File file;
  
      private String type;
  
      private String classifier;
  
      private Pom pom;
  
      protected Artifact getRef() {
          return (Artifact) getCheckedRef();
      }
  
      @Override
      public void validate(final Task task) {
          if (isReference()) {
              getRef().validate(task);
          } else {
              if (file == null) {
                  throw new BuildException("You must specify the 'file' for the artifact");
              } else if (!file.isFile()) {
                  throw new BuildException("The artifact file " + file + " does not exist");
              }
              if (type == null || type.length() <= 0) {
                  throw new BuildException("You must specify the 'type' for the artifact");
              }
          }
      }
  
      @Override
      public void setRefid(final Reference ref) {
          if (file != null || type != null || classifier != null) {
              throw tooManyAttributes();
          }
          super.setRefid(ref);
      }
  
      public File getFile() {
          if (isReference()) {
              return getRef().getFile();
          }
          return file;
      }
  
      public void setFile(final File file) {
          checkAttributesAllowed();
          this.file = file;
  
          if (file != null && type == null) {
              final String name = file.getName();
              final int period = name.lastIndexOf('.');
              if (period >= 0) {
                  type = name.substring(period + 1);
              }
          }
      }
  
      public String getType() {
          if (isReference()) {
              return getRef().getType();
          }
          return (type != null) ? type : "jar";
      }
  
      public void setType(final String type) {
          checkAttributesAllowed();
         this.type = type;
     }
 
     public String getClassifier() {
         if (isReference()) {
             return getRef().getClassifier();
         }
         return (classifier != null) ? classifier : "";
     }
 
     public void setClassifier(final String classifier) {
         checkAttributesAllowed();
         this.classifier = classifier;
     }
 
     public void setPomRef(final Reference ref) {
         checkAttributesAllowed();
         final Pom pom = new Pom();
         pom.setProject(getProject());
         pom.setRefid(ref);
         this.pom = pom;
     }
 
     public void addPom(final Pom pom) {
         checkChildrenAllowed();
         this.pom = pom;
     }
 
     public Pom getPom() {
         if (isReference()) {
             return getRef().getPom();
         }
         return pom;
     }
 
     @Override
     public List<Artifact> getArtifacts() {
         return Collections.singletonList(this);
     }
 
     @Override
     public void execute() throws BuildException {
         ProjectWorkspaceReader.getInstance().addArtifact(this);
     }
 
     @Override
     public String toString() {
         final String pomRepr = getPom() != null ? "(" + getPom().toString() + ":)" : "";
         return String.format(pomRepr + "%s:%s", getType(), getClassifier());
     }
 }