/*
 * Created on 24/Ago/2004
 *
 */
package net.sourceforge.fenixedu.applicationTier.Servico.teacher;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import net.sourceforge.fenixedu.applicationTier.FenixService;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.InvalidArgumentsServiceException;
import net.sourceforge.fenixedu.domain.ExecutionCourse;
import net.sourceforge.fenixedu.domain.ExportGrouping;
import net.sourceforge.fenixedu.domain.Grouping;
import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.Professorship;
import net.sourceforge.fenixedu.domain.Teacher;

/**
 * @author joaosa & rmalo
 * 
 */

public class DeleteProjectProposal extends FenixService {

    public Boolean run(Integer objectCode, Integer groupPropertiesCode, Integer executionCourseCode,
	    String withdrawalPersonUsername) throws FenixServiceException {

	Person withdrawalPerson = Teacher.readTeacherByUsername(withdrawalPersonUsername).getPerson();
	Grouping groupProperties = rootDomainObject.readGroupingByOID(groupPropertiesCode);
	ExecutionCourse executionCourse = rootDomainObject.readExecutionCourseByOID(executionCourseCode);
	ExecutionCourse startExecutionCourse = rootDomainObject.readExecutionCourseByOID(objectCode);

	if (groupProperties == null) {
	    throw new InvalidArgumentsServiceException("error.noGroupProperties");
	}
	if (executionCourse == null || startExecutionCourse == null) {
	    throw new InvalidArgumentsServiceException("error.noExecutionCourse");
	}

	ExportGrouping groupingExecutionCourse = executionCourse.getExportGrouping(groupProperties);

	if (groupingExecutionCourse == null) {
	    throw new InvalidArgumentsServiceException("error.noProjectProposal");
	}

	// List teachers to advise
	List group = new ArrayList();

	List groupPropertiesExecutionCourseList = groupProperties.getExportGroupings();
	Iterator iterGroupPropertiesExecutionCourseList = groupPropertiesExecutionCourseList.iterator();

	while (iterGroupPropertiesExecutionCourseList.hasNext()) {

	    ExportGrouping groupPropertiesExecutionCourseAux = (ExportGrouping) iterGroupPropertiesExecutionCourseList.next();
	    if (groupPropertiesExecutionCourseAux.getProposalState().getState().intValue() == 1
		    || groupPropertiesExecutionCourseAux.getProposalState().getState().intValue() == 2) {

		List professorships = groupPropertiesExecutionCourseAux.getExecutionCourse().getProfessorships();

		Iterator iterProfessorship = professorships.iterator();
		while (iterProfessorship.hasNext()) {
		    Professorship professorship = (Professorship) iterProfessorship.next();
		    Teacher teacher = professorship.getTeacher();

		    if (!(teacher.getPerson()).equals(withdrawalPerson) && !group.contains(teacher.getPerson())) {
			group.add(teacher.getPerson());
		    }
		}
	    }
	}

	List professorshipsAux = executionCourse.getProfessorships();

	Iterator iterProfessorshipsAux = professorshipsAux.iterator();
	while (iterProfessorshipsAux.hasNext()) {
	    Professorship professorshipAux = (Professorship) iterProfessorshipsAux.next();
	    Teacher teacherAux = professorshipAux.getTeacher();
	    if (!(teacherAux.getPerson()).equals(withdrawalPerson) && !group.contains(teacherAux.getPerson())) {
		group.add(teacherAux.getPerson());
	    }
	}

	groupingExecutionCourse.delete();

	return true;
    }

}