/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "Ant" and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
/*
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

package org.apache.tools.ant.taskdefs.optional.perforce;

import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;


/** 
 *  Creates a new Perforce label and set contents to reflect current
 *  client file revisions.
 *
 *  Label name defaults to AntLabel if none set.
 *
 * Example Usage:
 * <pre>
 *   &lt;P4Label name="MyLabel-${TSTAMP}-${DSTAMP}" desc="Auto Build Label" /&gt;
 * </pre>
 *
 * @author <A HREF="mailto:leslie.hughes@rubus.com">Les Hughes</A>
 */
public class P4Label extends P4Base {

    protected String name;
    protected String desc;
    protected String lock;

    /**
     * The name of the label; optional, default "AntLabel"
     */
    public void setName(String name) {
        this.name = name;
    }

    /**
     *Label Description; optional
     */
    public void setDesc(String desc) {
        this.desc = desc;
    }

    /**
     * when set to "locked", Perforce will lock the label once created; optional. 
     */
    public void setLock(String lock) {
        this.lock = lock;
    }

    /**
     *  do the work
     */
    public void execute() throws BuildException {
        log("P4Label exec:", Project.MSG_INFO);

        if (P4View == null || P4View.length() < 1) {
            log("View not set, assuming //depot/...", Project.MSG_WARN);
            P4View = "//depot/...";
        }

        if (desc == null || desc.length() < 1) {
            log("Label Description not set, assuming 'AntLabel'", Project.MSG_WARN);
            desc = "AntLabel";
        }

        if (lock != null && !lock.equalsIgnoreCase("locked")) {
            log("lock attribute invalid - ignoring", Project.MSG_WARN);
        }

        if (name == null || name.length() < 1) {
            SimpleDateFormat formatter = new SimpleDateFormat("yyyy.MM.dd-hh:mm");
            Date now = new Date();
            name = "AntLabel-" + formatter.format(now);
            log("name not set, assuming '" + name + "'", Project.MSG_WARN);
        }


        //We have to create a unlocked label first
        String newLabel =
                "Label: " + name + "\n" +
                "Description: " + desc + "\n" +
                "Options: unlocked\n" +
                "View: " + P4View + "\n";

        P4Handler handler = new P4HandlerAdapter() {
            public void process(String line) {
                log(line, Project.MSG_VERBOSE);
            }
        };

        handler.setOutput(newLabel);

        execP4Command("label -i", handler);

        execP4Command("labelsync -l " + name, new P4HandlerAdapter() {
            public void process(String line) {
                log(line, Project.MSG_VERBOSE);
            }
        });


        log("Created Label " + name + " (" + desc + ")", Project.MSG_INFO);

        //Now lock if required
        if (lock != null && lock.equalsIgnoreCase("locked")) {

            log("Modifying lock status to 'locked'", Project.MSG_INFO);

            final StringBuffer labelSpec = new StringBuffer();

            //Read back the label spec from perforce,
            //Replace Options
            //Submit back to Perforce

            handler = new P4HandlerAdapter() {
                public void process(String line) {
                    log(line, Project.MSG_VERBOSE);

                    if (util.match("/^Options:/", line)) {
                        line = "Options: " + lock;
                    }

                    labelSpec.append(line + "\n");
                }
            };


            execP4Command("label -o " + name, handler);
            log(labelSpec.toString(), Project.MSG_DEBUG);

            log("Now locking label...", Project.MSG_VERBOSE);
            handler = new P4HandlerAdapter() {
                public void process(String line) {
                    log(line, Project.MSG_VERBOSE);
                }
            };

            handler.setOutput(labelSpec.toString());
            execP4Command("label -i", handler);
        }


    }

}
