package net.sourceforge.fenixedu.domain.accessControl;

import java.util.Set;

import net.sourceforge.fenixedu.applicationTier.IUserView;
import net.sourceforge.fenixedu.domain.ExecutionCourse;
import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.Argument;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.GroupBuilder;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.exceptions.GroupDynamicExpressionException;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.operators.IdOperator;
import pt.ist.fenixWebFramework.renderers.utils.RenderUtils;

public class ExecutionCourseTeachersAndStudentsGroup extends ExecutionCourseGroup {

    /**
     * Serial version id.
     */
    private static final long serialVersionUID = 1L;

    private final GroupUnion union;

    public ExecutionCourseTeachersAndStudentsGroup(ExecutionCourse executionCourse) {
	super(executionCourse);

	ExecutionCourseTeachersGroup teachers = new ExecutionCourseTeachersGroup(executionCourse);
	ExecutionCourseStudentsGroup students = new ExecutionCourseStudentsGroup(executionCourse);

	this.union = new GroupUnion(teachers, students);
    }

    @Override
    public String getName() {
	return RenderUtils.getResourceString("SITE_RESOURCES",
		"label.net.sourceforge.fenixedu.domain.accessControl.ExecutionCourseTeachersAndStudentsGroupWithName",
		new Object[] { getExecutionCourse().getNome() });
    }

    @Override
    public Set<Person> getElements() {
	return this.union.getElements();
    }

    @Override
    public int getElementsCount() {
	return this.union.getElementsCount();
    }

    @Override
    public boolean allows(IUserView userView) {
	return this.union.allows(userView);
    }

    @Override
    public boolean isMember(Person person) {
	return this.union.isMember(person);
    }

    @Override
    protected Argument[] getExpressionArguments() {
	return new Argument[] { new IdOperator(getObject()) };
    }

    public static class Builder implements GroupBuilder {

	public Group build(Object[] arguments) {
	    try {
		return new ExecutionCourseTeachersAndStudentsGroup((ExecutionCourse) arguments[0]);
	    } catch (ClassCastException e) {
		throw new GroupDynamicExpressionException("accessControl.group.builder.executionCourse.notExecutionCourse",
			arguments[0].toString());
	    }
	}

	public int getMinArguments() {
	    return 0;
	}

	public int getMaxArguments() {
	    return 1;
	}

    }
}