package net.sourceforge.fenixedu.domain;

import java.math.BigDecimal;
import java.text.ParseException;
import java.util.List;
import java.util.Set;

import net.sourceforge.fenixedu.domain.teacher.TeacherService;
import net.sourceforge.fenixedu.injectionCode.AccessControl;

import org.joda.time.DateTime;

import pt.ist.fenixWebFramework.services.Service;

public class TeacherCredits extends TeacherCredits_Base {

    public TeacherCredits(Teacher teacher, TeacherCreditsState teacherCreditsState) throws ParseException {
        super();
        setTeacher(teacher);
        setTeacherCreditsState(teacherCreditsState);
        setRootDomainObject(RootDomainObject.getInstance());
        saveTeacherCredits();
    }

    public static TeacherCredits readTeacherCredits(ExecutionSemester executionSemester, Teacher teacher) {
        Set<TeacherCredits> teacherCredits = teacher.getTeacherCreditsSet();
        for (TeacherCredits teacherCredit : teacherCredits) {
            if (teacherCredit.getTeacherCreditsState().getExecutionSemester().equals(executionSemester)) {
                return teacherCredit;
            }
        }
        return null;
    }

    @Service
    public static void closeAllTeacherCredits(ExecutionSemester executionSemester) throws ParseException {
        List<Teacher> teachers = RootDomainObject.getInstance().getTeachers();
        TeacherCreditsState teacherCreditsState = TeacherCreditsState.getTeacherCreditsState(executionSemester);
        if (teacherCreditsState == null) {
            teacherCreditsState = new TeacherCreditsState(executionSemester);
        }
        for (Teacher teacher : teachers) {
            closeTeacherCredits(teacher, teacherCreditsState);
        }
        teacherCreditsState.setCloseState();
    }

    @Service
    public static void closeTeacherCredits(Teacher teacher, TeacherCreditsState teacherCreditsState) throws ParseException {
        TeacherCredits teacherCredits = teacher.getTeacherCredits(teacherCreditsState.getExecutionSemester());
        if (teacherCredits == null) {
            new TeacherCredits(teacher, teacherCreditsState);
        } else if (teacherCredits.getTeacherCreditsState().isOpenState()) {
            teacherCredits.saveTeacherCredits();
        }
    }

    @Service
    public static void openAllTeacherCredits(ExecutionSemester executionSemester) throws ParseException {
        TeacherCreditsState teacherCreditsState = TeacherCreditsState.getTeacherCreditsState(executionSemester);
        teacherCreditsState.setOpenState();
    }

    @Service
    public void editTeacherCredits(ExecutionSemester executionSemester) throws ParseException {
        saveTeacherCredits();
    }

    private void saveTeacherCredits() throws ParseException {
        Teacher teacher = getTeacher();
        ExecutionSemester executionSemester = getTeacherCreditsState().getExecutionSemester();
        setProfessionalCategory(teacher.getCategoryByPeriod(executionSemester));
        double managementCredits = teacher.getManagementFunctionsCredits(executionSemester);
        double serviceExemptionsCredits = teacher.getServiceExemptionCredits(executionSemester);
        double thesesCredits = teacher.getThesesCredits(executionSemester);
        double mandatoryLessonHours = teacher.getMandatoryLessonHours(executionSemester);
        TeacherService teacherService = teacher.getTeacherServiceByExecutionPeriod(executionSemester);
        setTeacherService(teacherService);
        setThesesCredits(new BigDecimal(thesesCredits));
        setBalanceOfCredits(new BigDecimal(teacher.getBalanceOfCreditsUntil(executionSemester.getPreviousExecutionPeriod())));
        setMandatoryLessonHours(new BigDecimal(mandatoryLessonHours));
        setManagementCredits(new BigDecimal(managementCredits));
        setServiceExemptionCredits(new BigDecimal(serviceExemptionsCredits));

        double totalCredits = 0;
        if (!getTeacher().isMonitor(executionSemester)) {
            totalCredits =
                    getTeachingDegreeCredits().doubleValue() + getMasterDegreeCredits().doubleValue()
                            + getTfcAdviseCredits().doubleValue() + thesesCredits + getOtherCredits().doubleValue()
                            + managementCredits + serviceExemptionsCredits;
        }
        setTotalCredits(new BigDecimal(totalCredits));

        addTeacherCreditsDocument(new TeacherCreditsDocument(teacher, executionSemester, teacherService));
        setBasicOperations();
    }

    private void setBasicOperations() {
        setPerson(AccessControl.getPerson());
        setLastModifiedDate(new DateTime());
    }

    private void setTeacherService(TeacherService teacherService) throws ParseException {
        if (teacherService != null) {
            setTeachingDegreeCredits(new BigDecimal(teacherService.getTeachingDegreeCredits()));
            setSupportLessonHours(new BigDecimal(teacherService.getSupportLessonHours()));
            setMasterDegreeCredits(new BigDecimal(teacherService.getMasterDegreeServiceCredits()));
            setTfcAdviseCredits(new BigDecimal(teacherService.getTeacherAdviseServiceCredits()));
            setOtherCredits(new BigDecimal(teacherService.getOtherServiceCredits()));
            setInstitutionWorkingHours(new BigDecimal(teacherService.getInstitutionWorkingHours()));
            setPastServiceCredits(new BigDecimal(teacherService.getPastServiceCredits()));
        } else {
            setTeachingDegreeCredits(new BigDecimal(0));
            setSupportLessonHours(new BigDecimal(0));
            setMasterDegreeCredits(new BigDecimal(0));
            setTfcAdviseCredits(new BigDecimal(0));
            setOtherCredits(new BigDecimal(0));
            setInstitutionWorkingHours(new BigDecimal(0));
            setPastServiceCredits(new BigDecimal(0));
        }
    }

    public TeacherCreditsDocument getLastTeacherCreditsDocument() {
        TeacherCreditsDocument lastTeacherCreditsDocument = null;
        for (TeacherCreditsDocument teacherCreditsDocument : getTeacherCreditsDocument()) {
            if (lastTeacherCreditsDocument == null
                    || lastTeacherCreditsDocument.getUploadTime().isBefore(teacherCreditsDocument.getUploadTime())) {
                lastTeacherCreditsDocument = teacherCreditsDocument;
            }
        }
        return lastTeacherCreditsDocument;
    }

}