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package ee.tlu.htk.dippler.utils;

import ee.tlu.htk.dippler.entities.Course;
import ee.tlu.htk.dippler.entities.Learner;
import ee.tlu.htk.dippler.entities.User;
import java.util.Collection;
import java.util.Iterator;
import org.apache.commons.collections.CollectionUtils;

/**
 *
 * @author pjotr
 */
public class permissionChecker {

    public static Boolean isAdmin(User user) {
        if (user.getLevel() >= 90) {
            return Boolean.TRUE;
        }
        return Boolean.FALSE;
    }

    public static Boolean isOwner(User user, User owner) {
        if (user.getId().longValue() == owner.getId().longValue()) {
            return Boolean.TRUE;
        }
        return Boolean.FALSE;
    }

    public static Boolean isOwnerOrAdmin(User user, User owner) {
        if (isAdmin(user) || isOwner(user, owner)) {
            return Boolean.TRUE;
        }
        return Boolean.FALSE;
    }

    public static Boolean isFacilitator(User user, Course course) {
        if (isAdmin(user)) {
            return Boolean.TRUE;
        } else if (isOwner(user, course.getOwner())) {
            return Boolean.TRUE;
        } else if (CollectionUtils.containsAny(course.getFacilitators(), user.getFacilitators())) {
            return Boolean.TRUE;
        }
        return Boolean.FALSE;
    }
    
    public static Boolean isLearner(User user, Course course) {
        Collection<Learner> coursesLearnerAssoc = course.getLearners();
        System.out.println("COURSE HAS COUNT learners " + coursesLearnerAssoc.size());
        Iterator<Learner> it = coursesLearnerAssoc.iterator();
        Learner learner;
        while(it.hasNext()) {
            learner = it.next();
            if ( learner.getUser().equals(user)) {
                return Boolean.TRUE;
            }
        }
        return Boolean.FALSE;
    }
}