package net.sourceforge.fenixedu.domain.executionCourse;

import java.io.Serializable;
import java.util.Collection;
import java.util.Set;
import java.util.TreeSet;

import net.sourceforge.fenixedu.domain.CurricularCourse;
import net.sourceforge.fenixedu.domain.DegreeCurricularPlan;
import net.sourceforge.fenixedu.domain.DomainReference;
import net.sourceforge.fenixedu.domain.ExecutionCourse;
import net.sourceforge.fenixedu.domain.ExecutionDegree;
import net.sourceforge.fenixedu.domain.ExecutionSemester;

public class ExecutionCourseSearchBean implements Serializable {

    private DomainReference<ExecutionSemester> executionPeriodDomainReference;
    private DomainReference<ExecutionDegree> executionDegreeDomainReference;

    public ExecutionCourseSearchBean() {
	super();
    }

    public ExecutionDegree getExecutionDegree() {
	return executionDegreeDomainReference == null ? null : executionDegreeDomainReference.getObject();
    }

    public void setExecutionDegree(ExecutionDegree executionDegree) {
	this.executionDegreeDomainReference = executionDegree == null ? null : new DomainReference<ExecutionDegree>(
		executionDegree);
    }

    public ExecutionSemester getExecutionPeriod() {
	return executionPeriodDomainReference == null ? null : executionPeriodDomainReference.getObject();
    }

    public void setExecutionPeriod(ExecutionSemester executionSemester) {
	this.executionPeriodDomainReference = executionSemester == null ? null : new DomainReference<ExecutionSemester>(
		executionSemester);
    }

    public Collection<ExecutionCourse> search(final Collection<ExecutionCourse> result) {
	final ExecutionSemester executionSemester = getExecutionPeriod();
	final ExecutionDegree executionDegree = getExecutionDegree();
	if (executionSemester == null || executionDegree == null) {
	    return null;
	}
	for (final ExecutionCourse executionCourse : executionSemester.getAssociatedExecutionCoursesSet()) {
	    if (matchesCriteria(executionSemester, executionDegree, executionCourse)) {
		result.add(executionCourse);
	    }
	}
	return result;
    }

    public Collection<ExecutionCourse> search() {
	final Set<ExecutionCourse> executionCourses = new TreeSet<ExecutionCourse>(
		ExecutionCourse.EXECUTION_COURSE_NAME_COMPARATOR);
	return search(executionCourses);

    }

    private boolean matchesCriteria(final ExecutionSemester executionSemester, final ExecutionDegree executionDegree,
	    final ExecutionCourse executionCourse) {
	return matchExecutionPeriod(executionSemester, executionCourse) && matchExecutionDegree(executionDegree, executionCourse);
    }

    private boolean matchExecutionPeriod(final ExecutionSemester executionSemester, final ExecutionCourse executionCourse) {
	return executionSemester == executionCourse.getExecutionPeriod();
    }

    private boolean matchExecutionDegree(final ExecutionDegree executionDegree, final ExecutionCourse executionCourse) {
	for (final CurricularCourse curricularCourse : executionCourse.getAssociatedCurricularCoursesSet()) {
	    final DegreeCurricularPlan degreeCurricularPlan = curricularCourse.getDegreeCurricularPlan();
	    if (degreeCurricularPlan == executionDegree.getDegreeCurricularPlan()) {
		return true;
	    }
	}
	return false;
    }

}