package net.sourceforge.fenixedu.domain.accounting.paymentCodes;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.RootDomainObject;
import net.sourceforge.fenixedu.domain.accounting.Event;
import net.sourceforge.fenixedu.domain.accounting.PaymentCode;
import net.sourceforge.fenixedu.domain.accounting.PaymentCodeType;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;
import net.sourceforge.fenixedu.util.Money;

import org.joda.time.LocalDate;
import org.joda.time.YearMonthDay;

import pt.ist.fenixWebFramework.services.Service;

public class IndividualCandidacyPaymentCode extends IndividualCandidacyPaymentCode_Base {

    protected IndividualCandidacyPaymentCode(final PaymentCodeType paymentCodeType, final YearMonthDay startDate,
            final YearMonthDay endDate, final Money minAmount, final Money maxAmount) {
        super();
        init(paymentCodeType, startDate, endDate, minAmount, maxAmount);
    }

    public static IndividualCandidacyPaymentCode create(final PaymentCodeType paymentCodeType, final YearMonthDay startDate,
            final YearMonthDay endDate, final Money minAmount, final Money maxAmount) {
        return PaymentCode.canGenerateNewCode(IndividualCandidacyPaymentCode.class, paymentCodeType, null) ? new IndividualCandidacyPaymentCode(
                paymentCodeType, startDate, endDate, minAmount, maxAmount) : findAndReuseExistingCode(paymentCodeType, startDate,
                endDate, minAmount, maxAmount);

    }

    public static IndividualCandidacyPaymentCode getAvailablePaymentCodeAndUse(final PaymentCodeType paymentCodeType,
            final YearMonthDay date, Event event, Person person) {
        Set<PaymentCode> individualCandidacyPaymentCodes = RootDomainObject.getInstance().getPaymentCodesSet();

        for (PaymentCode paymentCode : individualCandidacyPaymentCodes) {

            if (!(paymentCode instanceof IndividualCandidacyPaymentCode)) {
                continue;
            }

            IndividualCandidacyPaymentCode individualCandidacyPaymentCode = (IndividualCandidacyPaymentCode) paymentCode;

            if (individualCandidacyPaymentCode.isAvailable(paymentCodeType, date)) {
                individualCandidacyPaymentCode.use(event, person);

                return individualCandidacyPaymentCode;
            }
        }

        return null;
    }

    public static List<IndividualCandidacyPaymentCode> getAvailablePaymentCodes(final PaymentCodeType paymentCodeType,
            final YearMonthDay date) {
        List<IndividualCandidacyPaymentCode> result = new ArrayList<IndividualCandidacyPaymentCode>();

        Set<PaymentCode> individualCandidacyPaymentCodes = RootDomainObject.getInstance().getPaymentCodesSet();
        for (PaymentCode paymentCode : individualCandidacyPaymentCodes) {

            if (!(paymentCode instanceof IndividualCandidacyPaymentCode)) {
                continue;
            }

            IndividualCandidacyPaymentCode individualCandidacyPaymentCode = (IndividualCandidacyPaymentCode) paymentCode;

            if (individualCandidacyPaymentCode.isAvailable(paymentCodeType, date)) {
                result.add(individualCandidacyPaymentCode);
            }
        }

        return result;
    }

    protected void init(final PaymentCodeType paymentCodeType, YearMonthDay startDate, YearMonthDay endDate, Money minAmount,
            Money maxAmount) {
        super.init(paymentCodeType, startDate, endDate, minAmount, maxAmount, null);
    }

    protected Boolean isAvailable(final PaymentCodeType paymentCodeType, final YearMonthDay date) {
        return this.getType().equals(paymentCodeType) && !this.getStartDate().isAfter(date) && !this.getEndDate().isBefore(date)
                && this.getPerson() == null;
    }

    protected static IndividualCandidacyPaymentCode findAndReuseExistingCode(final PaymentCodeType paymentCodeType,
            final YearMonthDay startDate, final YearMonthDay endDate, final Money minAmount, final Money maxAmount) {

        IndividualCandidacyPaymentCode paymentCode = getAvailablePaymentCodeForReuse();
        paymentCode.reuse(startDate, endDate, minAmount, maxAmount, null);

        return paymentCode;
    }

    protected static IndividualCandidacyPaymentCode getAvailablePaymentCodeForReuse() {
        Set<IndividualCandidacyPaymentCode> individualCandidacyPaymentCodes =
                RootDomainObject.readAllDomainObjects(IndividualCandidacyPaymentCode.class);

        for (IndividualCandidacyPaymentCode paymentCode : individualCandidacyPaymentCodes) {
            if (paymentCode.isAvailableForReuse()) {
                return paymentCode;
            }
        }

        return null;
    }

    @Override
    protected void checkParameters(Event event, final Person person) {
        if (event == null) {
            throw new DomainException("error.accounting.paymentCodes.IndividualCandidacyPaymentCode.event.cannot.be.null");
        }

        if (person == null) {
            throw new DomainException("error.accounting.paymentCodes.IndividualCandidacyPaymentCode.person.cannot.be.null");
        }
    }

    protected void use(Event event, Person person) {
        checkParameters(event, person);

        this.setPerson(person);
        this.setAccountingEvent(event);
    }

    @Override
    public void setPerson(Person student) {
        if (this.getPerson() != null || !this.isNew()) {
            throw new DomainException("error.net.sourceforge.fenixedu.domain.accounting.PaymentCode.cannot.modify.person");
        }

        super._setPerson(student);
    }

    @Service
    public static List<IndividualCandidacyPaymentCode> createPaymentCodes(PaymentCodeType type, LocalDate beginDate,
            LocalDate endDate, Money minimum, Money maximum, Integer numberOfPaymentCodes) {

        List<IndividualCandidacyPaymentCode> result = new ArrayList<IndividualCandidacyPaymentCode>();

        for (int i = 0; i < numberOfPaymentCodes; i++) {

            result.add(IndividualCandidacyPaymentCode.create(type, beginDate.toDateTimeAtStartOfDay().toYearMonthDay(), endDate
                    .toDateTimeAtStartOfDay().toYearMonthDay(), minimum, maximum));
        }

        return result;

    }

}