/*

 * Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:  Definitions for the class BuilderUtil

 *

 */

package com.nokia.s60tools.analyzetool.builder;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.resources.IProjectDescription;

import org.eclipse.core.runtime.CoreException;

/**

 * Add and removes AnalyzeTool build natures to project natures.

 * @author kihe

 */

public class BuilderUtil {

	/**

	 * Constructor.

	 */

	public BuilderUtil() {

		// MethodDeclaration/Block[count(BlockStatement) = 0 and

		// @containsComment = 'false']

	}

	/**

	 * Adds AnalyzeTool build natures.

	 * @param project

	 *            Project reference

	 * @return True no errors otherwise False

	 */

	private boolean addAnalysisNatures(final IProject project) {

		try {

			// get existing natures

			String[] natures = project.getDescription().getNatureIds();

			// get project description

			IProjectDescription description = project.getDescription();

			// create array for the new natures

			String[] newNatures = new String[natures.length + 2];

				int qtNatureIndex = 0;

						qtNatureIndex = i;

						break;

					}

				}

					newNatures[0] = natures[0];

					newNatures[1] = PreNature.NATURE_ID;

					// add post-builder nature

					newNatures[natures.length + 1] = PostNature.NATURE_ID;

				}

				else {

					// add post-builder nature

					newNatures[natures.length + 1] = PostNature.NATURE_ID;

				}

			}

			else {

				// set pre-builder nature

				newNatures[0] = PreNature.NATURE_ID;

				// copy existing natures

				System.arraycopy(natures, 0, newNatures, 1, natures.length);

				// add post-builder nature

				newNatures[natures.length + 1] = PostNature.NATURE_ID;

			}

			// update project description

			description.setNatureIds(newNatures);

			project.setDescription(description, null);

			return true;

		} catch (CoreException ce) {

			ce.printStackTrace();

			return false;

		}

	}

	/**

	 * Disable AnalyzeTool build natures.

	 * @param project

	 *            Project reference

	 */

	public final void disableNatures(final IProject project) {

		try {

			// both natures found

			if (isNatureEnabled(project)) {

				removeNature(project, 2);

			} else {

				IProjectDescription description = project.getDescription();

				// find natures

				boolean foundPreNature = description

						.hasNature(PreNature.NATURE_ID);

				boolean foundPostNature = description

						.hasNature(PostNature.NATURE_ID);

				if (foundPreNature || foundPostNature) {

					removeNature(project, 1);

				}

			}

		} catch (CoreException ce) {

			ce.printStackTrace();

		}

	}

	/**

	 * Add AnalyzeTool custom builder nature to project builder natures.

	 * @param project

	 *            Project reference

	 * @return True if natures are added otherwise False

	 */

	public final boolean enableNatures(final IProject project) {

		try {

			// check is nature enable

				return true;

			}

			// get project description

			IProjectDescription description = project.getDescription();

			// find natures

			boolean foundPostNature = description

					.hasNature(PostNature.NATURE_ID);

			// only one analyzetool nature found => remove it

			if (foundPostNature || foundPreNature) {

				removeNature(project, 1);

			}

			// add right analysis natures

			return addAnalysisNatures(project);

		} catch (CoreException ce) {

			ce.printStackTrace();

			return false;

		}

	}

	/**

	 * Checks is AnalyzeTool custom nature enabled.

	 * @param projRef

	 *            Project reference

	 * @return True both pre or post nature enabled otherwise False

	 */

	public final boolean isNatureEnabled(final IProject projRef) {

		boolean preNatureFound = false;

		boolean postNatureFound = false;

		if (projRef == null || !projRef.isOpen()) {

			return false;

		}

		try {

			IProjectDescription description = projRef.getDescription();

			preNatureFound = description.hasNature(PreNature.NATURE_ID);

			postNatureFound = description.hasNature(PostNature.NATURE_ID);

		} catch (CoreException e) {

			e.printStackTrace();

		}

		if (preNatureFound && postNatureFound) {

			return true;

		}

		return false;

	}

	/**

	 * Removes AnalyzeTool custom builder natures.

	 * @param project

	 *            Project reference

	 * @param count

	 *            How many natures to remove

	 */

	private void removeNature(final IProject project, final int count) {

		try {

			IProjectDescription desc = project.getDescription();

			String[] natures = desc.getNatureIds();

			String[] newNatures = new String[natures.length - count];

			int index = 0;

			for (int i = 0; i < natures.length; i++) {

				if (!natures[i].equals(PreNature.NATURE_ID)

						&& !natures[i].equals(PostNature.NATURE_ID)) {

					newNatures[index] = natures[i];

					index++;

				}

			}

			desc.setNatureIds(newNatures);

			project.setDescription(desc, null);

		} catch (CoreException ce) {

			ce.printStackTrace();

		}

	}

}