/*
 *     Copyright (C) 2004 by Thorsten Staerk <dev@staerk.de>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU 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.
 *
 */

/*

this class is here to import tasks from a planner project file to ktimetracker.
the import shall not be limited to ktimetracker (kPlaTo sends greetings)
it imports planner's top-level-tasks on the same level-depth as currentItem.
if there is no currentItem, planner's top-level-tasks will become top-level-tasks in ktimetracker.
it imports as well the level-depth of each task, as its name, as its percent-complete.
test cases:
 - deleting all tasks away, then import!
 - having started with an empty ics, import!
 - with currentItem being a top-level-task, import!
 - with currentItem being a subtask, import!
*/

#include "plannerparser.h"

#include "task.h"
#include "taskview.h"

#include <KDebug>

PlannerParser::PlannerParser(TaskView * tv)
// if there is a task one level above currentItem, make it the father of all imported tasks. Set level accordingly.
// import as well if there a no task in the taskview as if there are.
// if there are, put the top-level tasks of planner on the same level as currentItem.
// So you have the chance as well to have the planner tasks at top-level as at a whatever-so-deep sublevel.
{
    kDebug() <<"entering constructor to import planner tasks";
    _taskView=tv;
    level=0;
    if (_taskView->currentItem()) if (_taskView->currentItem()->parent())
    {
        task = _taskView->currentItem()->parent();
        level=1;
    }
}

bool PlannerParser::startDocument()
{
    withInTasks=false; // becomes true as soon as parsing occurres <tasks>
    return true;
}

bool PlannerParser::startElement( const QString&, const QString&, const QString& qName, const QXmlAttributes& att )
{
    kDebug() << "entering function";
    QString taskName;
    int     taskComplete=0;

    // only <task>s within <tasks> are processed
    if (qName == QString::fromLatin1("tasks")) withInTasks=true;
    if ((qName == QString::fromLatin1("task")) && (withInTasks))
    {
        // find out name and percent-complete
        for (int i=0; i<att.length(); ++i)
        {
            if (att.qName(i) == QString::fromLatin1("name")) taskName=att.value(i);
            if (att.qName(i)==QString::fromLatin1("percent-complete")) taskComplete=att.value(i).toInt();
        }

        // at the moment, task is still the old task or the old father task (if an endElement occurred) or not existing (if the
        // new task is a top-level-task). Make task the parenttask, if existing.
        DesktopList dl;
        if (level++>0)
        {
            parentTask=task;
            task = new Task(taskName, QString(), 0, 0, dl, parentTask);
            task->setUid(_taskView->storage()->addTask(task, parentTask));
        }
        else
        {
            task = new Task(taskName, QString(), 0, 0, dl, _taskView);
            kDebug() <<"added" << taskName;
            task->setUid(_taskView->storage()->addTask(task, 0));
        }
        task->setPercentComplete(taskComplete, _taskView->storage());
    }
    return true;
}

bool PlannerParser::endElement( const QString&, const QString&, const QString& qName)
{
    // only <task>s within <tasks> increased level, so only decrease for <task>s within <tasks>
    if (withInTasks)
    {
        if (qName=="task")  if (level-->=0) task=task->parent();
        if (qName=="tasks") withInTasks=false;
    }
    return true;
}