package net.sourceforge.fenixedu.domain.degreeStructure;

import java.util.List;

import net.sourceforge.fenixedu.domain.ExecutionSemester;
import net.sourceforge.fenixedu.domain.curricularPeriod.CurricularPeriod;
import net.sourceforge.fenixedu.domain.curricularRules.AnyCurricularCourse;
import net.sourceforge.fenixedu.domain.curricularRules.CreditsLimit;
import net.sourceforge.fenixedu.domain.curricularRules.CurricularRuleType;
import net.sourceforge.fenixedu.domain.curriculum.CurricularCourseType;

public class OptionalCurricularCourse extends OptionalCurricularCourse_Base {

    protected OptionalCurricularCourse() {
	super();
    }

    /**
     * - This constructor is used to create a 'special' curricular course that
     * will represent any curricular course accordding to a rule
     */
    public OptionalCurricularCourse(CourseGroup parentCourseGroup, String name, String nameEn, CurricularStage curricularStage,
	    CurricularPeriod curricularPeriod, ExecutionSemester beginExecutionPeriod, ExecutionSemester endExecutionPeriod) {

	this();
	setName(name);
	setNameEn(nameEn);
	setCurricularStage(curricularStage);
	setType(CurricularCourseType.OPTIONAL_COURSE);
	new Context(parentCourseGroup, this, curricularPeriod, beginExecutionPeriod, endExecutionPeriod);
    }

    @Override
    public boolean isOptionalCurricularCourse() {
	return true;
    }

    @Override
    public Double getMaxEctsCredits(final ExecutionSemester executionSemester) {
	final CreditsLimit creditsLimitRule = getCreditsLimitRule(executionSemester);
	if (creditsLimitRule != null) {
	    return creditsLimitRule.getMaximumCredits();
	}
	final AnyCurricularCourse anyCurricularCourseRule = getAnyCurricularCourseRule(executionSemester);
	if (anyCurricularCourseRule != null) {
	    return anyCurricularCourseRule.hasCredits() ? anyCurricularCourseRule.getCredits() : 0;
	}
	return Double.valueOf(0d);
    }

    @Override
    public Double getMinEctsCredits(ExecutionSemester executionSemester) {
	final CreditsLimit creditsLimitRule = getCreditsLimitRule(executionSemester);
	if (creditsLimitRule != null) {
	    return creditsLimitRule.getMinimumCredits();
	}
	final AnyCurricularCourse anyCurricularCourseRule = getAnyCurricularCourseRule(executionSemester);
	if (anyCurricularCourseRule != null) {
	    return anyCurricularCourseRule.hasCredits() ? anyCurricularCourseRule.getCredits() : 0;
	}
	return Double.valueOf(0d);
    }

    private AnyCurricularCourse getAnyCurricularCourseRule(final ExecutionSemester executionSemester) {
	final List<AnyCurricularCourse> result = (List<AnyCurricularCourse>) getCurricularRules(
		CurricularRuleType.ANY_CURRICULAR_COURSE, executionSemester);
	// must have only one
	return result.isEmpty() ? null : (AnyCurricularCourse) result.get(0);
    }

}