package net.sourceforge.fenixedu.dataTransferObject.teacherServiceDistribution;

import java.util.ArrayList;
import java.util.Comparator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import net.sourceforge.fenixedu.dataTransferObject.DataTranferObject;
import net.sourceforge.fenixedu.domain.CurricularCourse;
import net.sourceforge.fenixedu.domain.DegreeModuleScope;
import net.sourceforge.fenixedu.domain.ExecutionSemester;
import net.sourceforge.fenixedu.domain.teacherServiceDistribution.TSDCourse;
import net.sourceforge.fenixedu.domain.teacherServiceDistribution.TSDTeacher;
import pt.utl.ist.fenix.tools.util.Pair;

public class TSDCourseDTOEntry extends DataTranferObject {

    public static final Comparator<TSDCourseDTOEntry> COMPARATOR_BY_NAME = new Comparator<TSDCourseDTOEntry>() {

	@Override
	public int compare(TSDCourseDTOEntry o1, TSDCourseDTOEntry o2) {
	    return o1.getTSDCourse().getName().compareTo(o2.getTSDCourse().getName());
	}

    };

    private TSDCourse tsdCourse;
    private List<ExecutionSemester> executionPeriodList = null;

    public TSDCourseDTOEntry(TSDCourse _tsdCourse, List<ExecutionSemester> executionPeriodList) {
	this.tsdCourse = _tsdCourse;
	this.executionPeriodList = executionPeriodList;
    }

    public List<TSDProfessorshipDTOEntry> getTSDProfessorshipDTOEntries() {
	List<TSDProfessorshipDTOEntry> tsdProfessorshipDTOEntryList = new ArrayList<TSDProfessorshipDTOEntry>();

	for (TSDTeacher teacher : tsdCourse.getAssociatedTSDTeachers()) {
	    tsdProfessorshipDTOEntryList.add(new TSDProfessorshipDTOEntry(tsdCourse.getTSDProfessorshipByTSDTeacher(teacher),
		    executionPeriodList));
	}

	return tsdProfessorshipDTOEntryList;
    }

    public TSDCourse getTSDCourse() {
	return tsdCourse;
    }

    public List<Pair<String, List<String>>> getCurricularCoursesInformation() {
	List<Pair<String, List<String>>> curricularCourseInformation = new ArrayList<Pair<String, List<String>>>();

	List<CurricularCourse> tsdCurricularCourseList = tsdCourse.getAssociatedCurricularCourses();

	for (CurricularCourse tsdCurricularCourse : tsdCurricularCourseList) {
	    Set<String> curricularYearsSet = buildCurricularYearsSet(tsdCurricularCourse, tsdCourse.getExecutionPeriod());

	    List<String> curricularYearsList = new ArrayList<String>();
	    curricularYearsList.addAll(curricularYearsSet);

	    curricularCourseInformation.add(new Pair<String, List<String>>(tsdCurricularCourse.getDegreeCurricularPlan()
		    .getDegree().getSigla(), curricularYearsList));

	}

	return curricularCourseInformation;
    }

    public String getAcronym() {
	CurricularCourse tsdCurricularCourse = null;
	if (!tsdCourse.getAssociatedCurricularCourses().isEmpty()) {
	    tsdCurricularCourse = tsdCourse.getAssociatedCurricularCourses().get(0);
	}

	if (tsdCurricularCourse != null) {
	    return tsdCurricularCourse.getAcronym();
	} else {
	    return tsdCourse.getCompetenceName();
	}
    }

    private Set<String> buildCurricularYearsSet(CurricularCourse tsdCurricularCourseEntry, ExecutionSemester executionPeriodEntry) {
	Set<String> curricularYearsSet = new LinkedHashSet<String>();

	for (Integer year : getCurricularIntYears(tsdCurricularCourseEntry)) {
	    curricularYearsSet.add(year.toString());
	}
	return curricularYearsSet;
    }

    private List<Integer> getCurricularIntYears(CurricularCourse course) {
	List<Integer> curricularYearList = new ArrayList<Integer>();

	for (DegreeModuleScope degreeModuleScope : course.getDegreeModuleScopes()) {
	    curricularYearList.add(degreeModuleScope.getCurricularYear());
	}

	return curricularYearList;
    }

}