/*
 * Copyright (C) 2011, Christian Halstrick <christian.halstrick@sap.com>
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.eclipse.jgit.api;

import java.io.IOException;
import java.util.LinkedList;
import java.util.List;

import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.api.errors.JGitInternalException;
import org.eclipse.jgit.errors.NoWorkTreeException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.IndexDiff;
import org.eclipse.jgit.lib.ProgressMonitor;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.submodule.SubmoduleWalk.IgnoreSubmoduleMode;
import org.eclipse.jgit.treewalk.FileTreeIterator;
import org.eclipse.jgit.treewalk.WorkingTreeIterator;
import org.eclipse.jgit.treewalk.filter.PathFilterGroup;

A class used to execute a Status command. It has setters for all supported options and arguments of this command and a call() method to finally execute the command. Each instance of this class should only be used for one invocation of the command (means: one call to call()) 
See Also:
Git
 *      documentation about Status/**
 * A class used to execute a {@code Status} command. It has setters for all
 * supported options and arguments of this command and a {@link #call()} method
 * to finally execute the command. Each instance of this class should only be
 * used for one invocation of the command (means: one call to {@link #call()})
 *
 * @see <a href=
 *      "http://www.kernel.org/pub/software/scm/git/docs/git-status.html" >Git
 *      documentation about Status</a>
 */
public class StatusCommand extends GitCommand<Status> {
	private WorkingTreeIterator workingTreeIt;
	private List<String> paths = null;
	private ProgressMonitor progressMonitor = null;

	private IgnoreSubmoduleMode ignoreSubmoduleMode = null;

	
Constructor for StatusCommand.
Params:
repo –  a Repository object./**
	 * Constructor for StatusCommand.
	 *
	 * @param repo
	 *            a {@link org.eclipse.jgit.lib.Repository} object.
	 */
	protected StatusCommand(Repository repo) {
		super(repo);
	}

	
Whether to ignore submodules
Params:
mode –  the IgnoreSubmoduleMode
Returns:
this
Since:
3.6/**
	 * Whether to ignore submodules
	 *
	 * @param mode
	 *            the
	 *            {@link org.eclipse.jgit.submodule.SubmoduleWalk.IgnoreSubmoduleMode}
	 * @return {@code this}
	 * @since 3.6
	 */
	public StatusCommand setIgnoreSubmodules(IgnoreSubmoduleMode mode) {
		ignoreSubmoduleMode = mode;
		return this;
	}

	
Show only the status of files which match the given paths. The path must
either name a file or a directory exactly. All paths are always relative
to the repository root. If a directory is specified all files recursively
underneath that directory are matched. If this method is called multiple
times then the status of those files is reported which match at least one
of the given paths. Note that regex expressions or wildcards are not
supported.
Params:
path – 
           repository-relative path of file/directory to show status for
           (with / as separator)
Returns:
this
Since:
3.1/**
	 * Show only the status of files which match the given paths. The path must
	 * either name a file or a directory exactly. All paths are always relative
	 * to the repository root. If a directory is specified all files recursively
	 * underneath that directory are matched. If this method is called multiple
	 * times then the status of those files is reported which match at least one
	 * of the given paths. Note that regex expressions or wildcards are not
	 * supported.
	 *
	 * @param path
	 *            repository-relative path of file/directory to show status for
	 *            (with <code>/</code> as separator)
	 * @return {@code this}
	 * @since 3.1
	 */
	public StatusCommand addPath(String path) {
		if (paths == null)
			paths = new LinkedList<>();
		paths.add(path);
		return this;
	}

	
Returns the paths filtering this status.
Returns:
the paths for which the status is shown or null if
        the complete status for the whole repo is shown.
Since:
3.1/**
	 * Returns the paths filtering this status.
	 *
	 * @return the paths for which the status is shown or <code>null</code> if
	 *         the complete status for the whole repo is shown.
	 * @since 3.1
	 */
	public List<String> getPaths() {
		return paths;
	}

	
{@inheritDoc}
 Executes the Status command with all the options and parameters collected by the setter methods of this class. Each instance of this class should only be used for one invocation of the command. Don't call this method twice on an instance. /**
	 * {@inheritDoc}
	 * <p>
	 * Executes the {@code Status} command with all the options and parameters
	 * collected by the setter methods of this class. Each instance of this
	 * class should only be used for one invocation of the command. Don't call
	 * this method twice on an instance.
	 */
	@Override
	public Status call() throws GitAPIException, NoWorkTreeException {
		if (workingTreeIt == null)
			workingTreeIt = new FileTreeIterator(repo);

		try {
			IndexDiff diff = new IndexDiff(repo, Constants.HEAD, workingTreeIt);
			if (ignoreSubmoduleMode != null)
				diff.setIgnoreSubmoduleMode(ignoreSubmoduleMode);
			if (paths != null)
				diff.setFilter(PathFilterGroup.createFromStrings(paths));
			if (progressMonitor == null)
				diff.diff();
			else
				diff.diff(progressMonitor, ProgressMonitor.UNKNOWN,
						ProgressMonitor.UNKNOWN, ""); //$NON-NLS-1$
			return new Status(diff);
		} catch (IOException e) {
			throw new JGitInternalException(e.getMessage(), e);
		}
	}

	
To set the WorkingTreeIterator which should be used. If this method is not called a standard FileTreeIterator is used. 
Params:
workingTreeIt – 
           a working tree iterator
Returns:
this/**
	 * To set the {@link org.eclipse.jgit.treewalk.WorkingTreeIterator} which
	 * should be used. If this method is not called a standard
	 * {@link org.eclipse.jgit.treewalk.FileTreeIterator} is used.
	 *
	 * @param workingTreeIt
	 *            a working tree iterator
	 * @return {@code this}
	 */
	public StatusCommand setWorkingTreeIt(WorkingTreeIterator workingTreeIt) {
		this.workingTreeIt = workingTreeIt;
		return this;
	}

	
To set the ProgressMonitor which contains callback methods to inform you about the progress of this command. 
Params:
progressMonitor –  a ProgressMonitor object.
Returns:
this
Since:
3.1/**
	 * To set the {@link org.eclipse.jgit.lib.ProgressMonitor} which contains
	 * callback methods to inform you about the progress of this command.
	 *
	 * @param progressMonitor
	 *            a {@link org.eclipse.jgit.lib.ProgressMonitor} object.
	 * @return {@code this}
	 * @since 3.1
	 */
	public StatusCommand setProgressMonitor(ProgressMonitor progressMonitor) {
		this.progressMonitor = progressMonitor;
		return this;
	}
}