/***************************************************************************
                          addconstrainttwoactivitiesgroupedform.cpp  -  description
                             -------------------
    begin                : Aug 21, 2007
    copyright            : (C) 2007 by Lalescu Liviu
    email                : Please see https://lalescu.ro/liviu/ for details about contacting Liviu Lalescu (in particular, you can find here the e-mail address)
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software: you can redistribute it and/or modify  *
 *   it under the terms of the GNU Affero General Public License as        *
 *   published by the Free Software Foundation, either version 3 of the    *
 *   License, or (at your option) any later version.                       *
 *                                                                         *
 ***************************************************************************/

#include <QMessageBox>

#include "longtextmessagebox.h"

#include "addconstrainttwoactivitiesgroupedform.h"
#include "timeconstraint.h"

AddConstraintTwoActivitiesGroupedForm::AddConstraintTwoActivitiesGroupedForm(QWidget* parent): QDialog(parent)
{
	setupUi(this);

	addConstraintPushButton->setDefault(true);

	connect(addConstraintPushButton, SIGNAL(clicked()), this, SLOT(addCurrentConstraint()));
	connect(closePushButton, SIGNAL(clicked()), this, SLOT(close()));
	connect(teachersComboBox, SIGNAL(activated(QString)), this, SLOT(filterChanged()));
	connect(studentsComboBox, SIGNAL(activated(QString)), this, SLOT(filterChanged()));
	connect(subjectsComboBox, SIGNAL(activated(QString)), this, SLOT(filterChanged()));
	connect(activityTagsComboBox, SIGNAL(activated(QString)), this, SLOT(filterChanged()));

	centerWidgetOnScreen(this);
	restoreFETDialogGeometry(this);

	QSize tmp1=teachersComboBox->minimumSizeHint();
	Q_UNUSED(tmp1);
	QSize tmp2=studentsComboBox->minimumSizeHint();
	Q_UNUSED(tmp2);
	QSize tmp3=subjectsComboBox->minimumSizeHint();
	Q_UNUSED(tmp3);
	QSize tmp4=activityTagsComboBox->minimumSizeHint();
	Q_UNUSED(tmp4);
	
	QSize tmp5=firstActivitiesComboBox->minimumSizeHint();
	Q_UNUSED(tmp5);
	QSize tmp6=secondActivitiesComboBox->minimumSizeHint();
	Q_UNUSED(tmp6);
	
	firstActivitiesComboBox->setMaximumWidth(maxRecommendedWidth(this));
	secondActivitiesComboBox->setMaximumWidth(maxRecommendedWidth(this));
	
	teachersComboBox->addItem("");
	for(int i=0; i<gt.rules.teachersList.size(); i++){
		Teacher* tch=gt.rules.teachersList[i];
		teachersComboBox->addItem(tch->name);
	}
	teachersComboBox->setCurrentIndex(0);

	subjectsComboBox->addItem("");
	for(int i=0; i<gt.rules.subjectsList.size(); i++){
		Subject* sb=gt.rules.subjectsList[i];
		subjectsComboBox->addItem(sb->name);
	}
	subjectsComboBox->setCurrentIndex(0);

	activityTagsComboBox->addItem("");
	for(int i=0; i<gt.rules.activityTagsList.size(); i++){
		ActivityTag* st=gt.rules.activityTagsList[i];
		activityTagsComboBox->addItem(st->name);
	}
	activityTagsComboBox->setCurrentIndex(0);

	studentsComboBox->addItem("");
	for(int i=0; i<gt.rules.yearsList.size(); i++){
		StudentsYear* sty=gt.rules.yearsList[i];
		studentsComboBox->addItem(sty->name);
		for(int j=0; j<sty->groupsList.size(); j++){
			StudentsGroup* stg=sty->groupsList[j];
			studentsComboBox->addItem(stg->name);
			if(SHOW_SUBGROUPS_IN_COMBO_BOXES) for(int k=0; k<stg->subgroupsList.size(); k++){
				StudentsSubgroup* sts=stg->subgroupsList[k];
				studentsComboBox->addItem(sts->name);
			}
		}
	}
	studentsComboBox->setCurrentIndex(0);

	updateActivitiesComboBox();
}

AddConstraintTwoActivitiesGroupedForm::~AddConstraintTwoActivitiesGroupedForm()
{
	saveFETDialogGeometry(this);
}

bool AddConstraintTwoActivitiesGroupedForm::filterOk(Activity* act)
{
	QString tn=teachersComboBox->currentText();
	QString stn=studentsComboBox->currentText();
	QString sbn=subjectsComboBox->currentText();
	QString sbtn=activityTagsComboBox->currentText();
	int ok=true;

	//teacher
	if(tn!=""){
		bool ok2=false;
		for(QStringList::Iterator it=act->teachersNames.begin(); it!=act->teachersNames.end(); it++)
			if(*it == tn){
				ok2=true;
				break;
			}
		if(!ok2)
			ok=false;
	}

	//subject
	if(sbn!="" && sbn!=act->subjectName)
		ok=false;
		
	//activity tag
	if(sbtn!="" && !act->activityTagsNames.contains(sbtn))
		ok=false;
		
	//students
	if(stn!=""){
		bool ok2=false;
		for(QStringList::Iterator it=act->studentsNames.begin(); it!=act->studentsNames.end(); it++)
			if(*it == stn){
				ok2=true;
				break;
			}
		if(!ok2)
			ok=false;
	}
	
	return ok;
}

void AddConstraintTwoActivitiesGroupedForm::updateActivitiesComboBox(){
	firstActivitiesComboBox->clear();
	firstActivitiesList.clear();

	secondActivitiesComboBox->clear();
	secondActivitiesList.clear();
	
	for(int i=0; i<gt.rules.activitiesList.size(); i++){
		Activity* act=gt.rules.activitiesList[i];
		
		if(filterOk(act)){
			firstActivitiesComboBox->addItem(act->getDescription(gt.rules));
			this->firstActivitiesList.append(act->id);

			secondActivitiesComboBox->addItem(act->getDescription(gt.rules));
			this->secondActivitiesList.append(act->id);
		}
	}

	constraintChanged();
}

void AddConstraintTwoActivitiesGroupedForm::filterChanged()
{
	this->updateActivitiesComboBox();
}

void AddConstraintTwoActivitiesGroupedForm::constraintChanged()
{
}

void AddConstraintTwoActivitiesGroupedForm::addCurrentConstraint()
{
	TimeConstraint *ctr=NULL;

	double weight;
	QString tmp=weightLineEdit->text();
	weight_sscanf(tmp, "%lf", &weight);
	if(weight<0.0 || weight>100.0){
		QMessageBox::warning(this, tr("FET information"),
			tr("Invalid weight (percentage)"));
		return;
	}

	int fid;
	int tmp2=firstActivitiesComboBox->currentIndex();
	assert(tmp2<gt.rules.activitiesList.size());
	assert(tmp2<firstActivitiesList.size());
	if(tmp2<0){
		QMessageBox::warning(this, tr("FET information"),
			tr("Invalid activity"));
		return;
	}
	else
		fid=firstActivitiesList.at(tmp2);
	
	int sid;
	int tmp3=secondActivitiesComboBox->currentIndex();
	assert(tmp3<gt.rules.activitiesList.size());
	assert(tmp3<secondActivitiesList.size());
	if(tmp3<0){
		QMessageBox::warning(this, tr("FET information"),
			tr("Invalid activity"));
		return;
	}
	else
		sid=secondActivitiesList.at(tmp3);
		
	if(sid==fid){
		QMessageBox::warning(this, tr("FET information"),
			tr("Same activities - impossible"));
		return;
	}
	
	ctr=new ConstraintTwoActivitiesGrouped(weight, fid, sid);

	bool tmp4=gt.rules.addTimeConstraint(ctr);
	if(tmp4)
		LongTextMessageBox::information(this, tr("FET information"),
			tr("Constraint added:")+"\n\n"+ctr->getDetailedDescription(gt.rules));
	else{
		QMessageBox::warning(this, tr("FET information"),
			tr("Constraint NOT added - error?"));
		delete ctr;
	}
}
