/* This file is part of the KDE project
   Copyright (C) 2001 Thomas Zander zander@kde.org
   Copyright (C) 2004 - 2006 Dag Andersen <danders@get2net.dk>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#ifndef KPTPROJECT_H
#define KPTPROJECT_H

#include "kptnode.h"

#include "kptaccount.h"
#include "kptcalendar.h"
#include "kptdatetime.h"
#include "kptduration.h"
#include "kptresource.h"

#include <qmap.h>
#include <qptrlist.h>
#include <qdict.h>

#include <klistview.h>
#include <klocale.h>

namespace KPlato
{

class Part;
class Schedule;
class StandardWorktime;

//#define DEBUGPERT
/**
 * Project is the main node in a project, it contains child nodes and
 * possibly sub-projects. A sub-project is just another instantion of this
 * node however.
 */
class Project : public Node {
public:
    Project(Node *parent = 0);
    ~Project();

    /// Returns the node type. Can be Type_Project or Type_Subproject.
    virtual int type() const;

    /**
     * Calculate the whole project.
     *
     * @param schedule Schedule to use
     */
    void calculate(Schedule *scedule);
    /**
     * Calculate the whole project.
     *
     * @param use Calculate using expected-, optimistic- or pessimistic estimate.
     */
    void calculate(Effort::Use use);
    /// Calculate current schedule
    void calculate();
     
    virtual bool calcCriticalPath(bool fromEnd);
    
    virtual DateTime startTime() const;
    virtual DateTime endTime() const;

    /// Returns the duration calculated as latestFinish - earliestStart.
    Duration *getExpectedDuration();

    /**
     * Instead of using the expected duration, generate a random value using
     * the Distribution of each Task. This can be used for Monte-Carlo
     * estimation of Project duration.
     */
    Duration *getRandomDuration();

    virtual bool load(QDomElement &element);
    virtual void save(QDomElement &element) const;

    QPtrList<ResourceGroup> &resourceGroups();
    virtual void addResourceGroup(ResourceGroup *resource);
    virtual void insertResourceGroup(unsigned int index, ResourceGroup *resource);
    void removeResourceGroup(ResourceGroup *resource);
    void removeResourceGroup(int number);
    ResourceGroup *takeResourceGroup(ResourceGroup *resource)
        { return m_resourceGroups.take(m_resourceGroups.findRef(resource)); }

    bool addTask( Node* task, Node* position );
    bool addSubTask( Node* task, Node* position );
    bool addSubTask( Node* task, int index, Node* parent );
    void delTask(Node *node);
    bool canIndentTask(Node* node);
    bool indentTask( Node* node );
    bool canUnindentTask( Node* node );
    bool unindentTask( Node* node );
    bool canMoveTaskUp( Node* node );
    bool moveTaskUp( Node* node );
    bool canMoveTaskDown( Node* node );
    bool moveTaskDown( Node* node );
    Task *createTask(Node* parent);
    Task *createTask(Task &def, Node* parent);
    
    /// Returns the resourcegroup with identity id.
    ResourceGroup *group(QString id);
    /// Returns the resource with identity id.
    Resource *resource(QString id);

    virtual EffortCostMap plannedEffortCostPrDay(const QDate &start, const QDate &end) const;
    
    /// Returns the total planned effort for this project (or subproject) 
    virtual Duration plannedEffort();
    /// Returns the total planned effort for this project (or subproject) on date
    virtual Duration plannedEffort(const QDate &date);
    /// Returns the planned effort up to and including date
    virtual Duration plannedEffortTo(const QDate &date);
    
    /// Returns the actual effort 
    virtual Duration actualEffort();
    /// Returns the actual effort on date
    virtual Duration actualEffort(const QDate &date);
    /// Returns the actual effort up to and including date
    virtual Duration actualEffortTo(const QDate &date);
    /**
     * Returns the total planned cost for this project
     */
    virtual double plannedCost();
    /// Planned cost on date
    virtual double plannedCost(const QDate &date);
    /// Planned cost up to and including date
    virtual double plannedCostTo(const QDate &date);
    
    /**
     * Returns the actually reported cost for this project
     */
    virtual double actualCost();
    /// Actual cost on date
    virtual double actualCost(const QDate &date);
    /// Actual cost up to and including date
    virtual double actualCostTo(const QDate &date);

    Calendar *defaultCalendar() { return m_standardWorktime->calendar(); }
    QPtrList<Calendar> calendars();
    void addCalendar(Calendar *calendar);
    /// Returns the calendar with identity id.
    Calendar *calendar(const QString id) const;

    /**
     * Defines the length of days, weeks, months and years
     * and the standard working week.
     * Used for estimation and calculation of effort, 
     * and presentation in gantt chart.
     */    
    StandardWorktime *standardWorktime() { return m_standardWorktime; }
    void setStandardWorktime(StandardWorktime * worktime);

    /// Check if node par can be linked to node child.
    bool legalToLink(Node *par, Node *child);
    
    virtual const QDict<Node> &nodeDict() { return nodeIdDict; }
    
    /// Find the node with identity id
    virtual Node *findNode(const QString &id) const 
        { return (m_parent ? m_parent->findNode(id) : nodeIdDict.find(id)); }
    /// Remove the node with identity id from the register
    virtual bool removeId(const QString &id);
    /// Insert the node with identity id
    virtual void insertId(const QString &id, const Node *node);
    /// Register node. The nodes id must be unique and non-empty.
    bool registerNodeId(Node *node);
    /// Create a unique id.
    QString uniqueNodeId(int seed=1);
    
    ResourceGroup *findResourceGroup(const QString &id) const 
        { return resourceGroupIdDict.find(id); }
    /// Remove the resourcegroup with identity id from the register
    bool removeResourceGroupId(const QString &id) 
        { return resourceGroupIdDict.remove(id); }
    /// Insert the resourcegroup with identity id
    void insertResourceGroupId(const QString &id, const ResourceGroup* group) 
        { resourceGroupIdDict.insert(id, group); }
    
    Resource *findResource(const QString &id) const 
        { return resourceIdDict.find(id); }
    /// Remove the resource with identity id from the register
    bool removeResourceId(const QString &id) 
        { return resourceIdDict.remove(id); }
    /// Insert the resource with identity id
    void insertResourceId(const QString &id, const Resource *resource) 
        { resourceIdDict.insert(id, resource); }

    /// Find the calendar with identity id
    virtual Calendar *findCalendar(const QString &id) const 
        { return id.isEmpty() ? 0 : calendarIdDict.find(id); }
    /// Remove the calendar with identity id from the register
    virtual bool removeCalendarId(const QString &id);
    /// Insert the calendar with identity id
    virtual void insertCalendarId(const QString &id, const Calendar *calendar);
    
    /**
     * Setting a project to be baselined means the project data can not be edited anymore.
     * @param on the new baseline value
     */
    void setBaselined(bool on) { m_baselined = on; }
    /**
     * @return if the project is baselined; a baselined project becomes uneditable.
     */
    bool isBaselined() const { return m_baselined; }
    
    void generateWBS(int count, WBSDefinition &def, QString wbs=QString());

    Accounts &accounts() { return m_accounts; }
    
    /// Set current schedule to schedule with identity id, for me and my children
    virtual void setCurrentSchedule(long id);
    /// Create new schedule with unique id.
    MainSchedule *createSchedule(QString name, Schedule::Type type);
    /// Set parent schedule for my children
    virtual void setParentSchedule(Schedule *sch);
    
protected:
    Accounts m_accounts;
    QPtrList<ResourceGroup> m_resourceGroups;

    QPtrList<Calendar> m_calendars;

    StandardWorktime *m_standardWorktime;
        
    DateTime calculateForward(int use);
    DateTime calculateBackward(int use);
    DateTime scheduleForward(const DateTime &earliest, int use);
    DateTime scheduleBackward(const DateTime &latest, int use);
    void adjustSummarytask();

    void initiateCalculation(Schedule &sch);
    void initiateCalculationLists(QPtrList<Node> &startnodes, QPtrList<Node> &endnodes, QPtrList<Node> &summarytasks);

    bool legalParents(Node *par, Node *child);
    bool legalChildren(Node *par, Node *child);
    
private:
    void init();
    
    QPtrList<Node> m_startNodes;
    QPtrList<Node> m_endNodes;
    QPtrList<Node> m_summarytasks;
    
    bool m_baselined;
    
    QDict<ResourceGroup> resourceGroupIdDict;
    QDict<Resource> resourceIdDict;
    QDict<Node> nodeIdDict;        
    QDict<Calendar> calendarIdDict;
    
#ifndef NDEBUG
#include <qcstring.h>
public:
    void printDebug(bool children, QCString indent);
    void printCalendarDebug(QCString indent="");
#ifdef DEBUGPERT
    static void pert_test();
    static void printTree(Node *n, QString s);
#endif
#endif
};

}  //KPlato namespace

#endif