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/*
 * SonarQube
 * Copyright (C) 2009-2016 SonarSource SA
 * mailto:contact AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.server.computation.component;

import static java.lang.String.format;

public class PathAwareVisitorWrapper implements VisitorWrapper {

  private final PathAwareVisitor delegate;

  private final DequeBasedPath stack = new DequeBasedPath<>();

  public PathAwareVisitorWrapper(PathAwareVisitor delegate) {
    this.delegate = delegate;
  }

  @Override
  public ComponentVisitor getWrappedVisitor() {
    return this.delegate;
  }

  @Override
  public void beforeComponent(Component component){
    stack.add(new PathElementImpl<>(component, createForComponent(component)));
  }

  @Override
  public void afterComponent(Component component){
    stack.pop();
  }

  @Override
  public void visitProject(Component tree) {
    delegate.visitProject(tree, stack);
  }

  @Override
  public void visitModule(Component tree) {
    delegate.visitModule(tree, stack);
  }

  @Override
  public void visitDirectory(Component tree) {
    delegate.visitDirectory(tree, stack);
  }

  @Override
  public void visitFile(Component tree) {
    delegate.visitFile(tree, stack);
  }

  @Override
  public void visitView(Component view) {
    delegate.visitView(view, stack);
  }

  @Override
  public void visitSubView(Component subView) {
    delegate.visitSubView(subView, stack);
  }

  @Override
  public void visitProjectView(Component projectView) {
    delegate.visitProjectView(projectView, stack);
  }

  @Override
  public void visitAny(Component component) {
    delegate.visitAny(component, stack);
  }

  @Override
  public ComponentVisitor.Order getOrder() {
    return delegate.getOrder();
  }

  @Override
  public CrawlerDepthLimit getMaxDepth() {
    return delegate.getMaxDepth();
  }

  private T createForComponent(Component component) {
    switch (component.getType()) {
      case PROJECT:
        return delegate.getFactory().createForProject(component);
      case MODULE:
        return delegate.getFactory().createForModule(component);
      case DIRECTORY:
        return delegate.getFactory().createForDirectory(component);
      case FILE:
        return delegate.getFactory().createForFile(component);
      case VIEW:
        return delegate.getFactory().createForView(component);
      case SUBVIEW:
        return delegate.getFactory().createForSubView(component);
      case PROJECT_VIEW:
        return delegate.getFactory().createForProjectView(component);
      default:
        throw new IllegalArgumentException(format("Unsupported component type %s, can not create stack object", component.getType()));
    }
  }

  @Override
  public String toString() {
    return delegate.toString();
  }
}