package net.sourceforge.fenixedu.dataTransferObject.teacherServiceDistribution;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.teacherServiceDistribution.TSDProcessPhase;
import net.sourceforge.fenixedu.domain.teacherServiceDistribution.TeacherServiceDistribution;

import org.apache.commons.beanutils.BeanComparator;

public class TeacherServiceDistributionDTOEntry {
    Integer level;

    TeacherServiceDistribution tsd;

    public TeacherServiceDistributionDTOEntry(TeacherServiceDistribution tsd, Integer level) {
	this.level = level;
	this.tsd = tsd;
    }

    public String getName() {
	StringBuilder sb = new StringBuilder();

	for (int i = 0; i < level; i++) {
	    sb.append(" - ");
	}

	sb.append(" ");
	sb.append(tsd.getName());

	return sb.toString();
    }

    public Integer getIdInternal() {
	return tsd.getIdInternal();
    }

    public TeacherServiceDistribution getTeacherServiceDistribution() {
	return tsd;
    }

    public static List<TeacherServiceDistributionDTOEntry> getTeacherServiceDistributionOptionEntriesForPerson(
	    TSDProcessPhase tsdProcessPhase, Person person, boolean testCoursesAndTeachersManagementGroupPermission,
	    boolean testCoursesAndTeachersValuationManagerPermission) {
	List<TeacherServiceDistributionDTOEntry> tsdOptionEntries = new ArrayList<TeacherServiceDistributionDTOEntry>();

	buildTeacherServiceDistributionOptionEntriesRec(tsdOptionEntries, 0, tsdProcessPhase.getRootTSD(), person,
		testCoursesAndTeachersManagementGroupPermission, testCoursesAndTeachersValuationManagerPermission);

	return tsdOptionEntries;
    }

    public static List<TeacherServiceDistributionDTOEntry> getTeacherServiceDistributionOptionEntries(
	    TSDProcessPhase tsdProcessPhase) {
	List<TeacherServiceDistributionDTOEntry> tsdOptionEntries = new ArrayList<TeacherServiceDistributionDTOEntry>();

	buildTeacherServiceDistributionOptionEntriesRec(tsdOptionEntries, 0, tsdProcessPhase.getRootTSD(), null, false, false);

	return tsdOptionEntries;
    }

    private static void buildTeacherServiceDistributionOptionEntriesRec(
	    List<TeacherServiceDistributionDTOEntry> tsdOptionEntries, int level, TeacherServiceDistribution grouping,
	    Person person, boolean testCoursesAndTeachersManagementGroupPermission,
	    boolean testCoursesAndTeachersValuationManagerPermission) {

	buildTeacherServiceDistributionOptionEntriesRec(tsdOptionEntries, level, grouping, person,
		testCoursesAndTeachersManagementGroupPermission, testCoursesAndTeachersManagementGroupPermission,
		testCoursesAndTeachersValuationManagerPermission, testCoursesAndTeachersValuationManagerPermission);
    }

    private static void buildTeacherServiceDistributionOptionEntriesRec(
	    List<TeacherServiceDistributionDTOEntry> tsdOptionEntries, int level, TeacherServiceDistribution grouping,
	    Person person, boolean testCoursesManagementGroupPermission, boolean testTeachersManagementGroupPermission,
	    boolean testTeachersValuationManagerPermission, boolean testCoursesValuationManagerPermission) {

	if (person == null || (testCoursesValuationManagerPermission && grouping.isMemberOfCoursesValuationManagers(person))
		|| (testTeachersValuationManagerPermission && grouping.isMemberOfTeachersValuationManagers(person))
		|| (testCoursesManagementGroupPermission && grouping.isMemberOfCoursesManagementGroup(person))
		|| (testTeachersManagementGroupPermission && grouping.isMemberOfTeachersManagementGroup(person))
		|| grouping.getTSDProcessPhase().getTSDProcess().getHasSuperUserPermission(person)) {
	    tsdOptionEntries.add(new TeacherServiceDistributionDTOEntry(grouping, level));
	    person = null;
	}

	List<TeacherServiceDistribution> childsList = new ArrayList<TeacherServiceDistribution>(grouping.getChilds());
	Collections.sort(childsList, new BeanComparator("name"));

	for (TeacherServiceDistribution tsd : childsList) {
	    buildTeacherServiceDistributionOptionEntriesRec(tsdOptionEntries, level + 1, tsd, person,
		    testCoursesManagementGroupPermission, testTeachersManagementGroupPermission,
		    testTeachersValuationManagerPermission, testCoursesValuationManagerPermission);
	}
    }
}