/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtVersit module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
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** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qversitcontactimporter_p.h"

#include <QtContacts/qcontactdetails.h>

#include "qversitcontacthandler.h"
#include "qversitcontactpluginloader_p.h"
#include "qversitcontactsdefs_p.h"
#include "qversitdocument.h"
#include "qversitpluginsearch_p.h"
#include "qversitproperty.h"
#include "qversitutils_p.h"

QTCONTACTS_USE_NAMESPACE

QT_BEGIN_NAMESPACE_VERSIT

/*!
 * Constructor.
 */
QVersitContactImporterPrivate::QVersitContactImporterPrivate(const QStringList& profiles) :
    mPropertyHandler(NULL),
    mPropertyHandler2(NULL),
    mPropertyHandlerVersion(0),
    mDefaultResourceHandler(new QVersitDefaultResourceHandler),
    mResourceHandler(mDefaultResourceHandler)
{
    // Contact detail mappings
    int versitPropertyCount =
        sizeof(versitContactDetailMappings)/sizeof(VersitContactDetailMapping);
    for (int i=0; i < versitPropertyCount; i++) {
        QString versitPropertyName =
            QLatin1Literal(versitContactDetailMappings[i].versitPropertyName);
        QPair<QContactDetail::DetailType, int> contactDetail;
        contactDetail.first =
            versitContactDetailMappings[i].detailType;
        contactDetail.second =
            versitContactDetailMappings[i].detailField;
        mDetailMappings.insert(versitPropertyName,contactDetail);
    }

    // Context mappings
    int contextCount = sizeof(versitContextMappings)/sizeof(VersitContextMapping);
    for (int i=0; i < contextCount; i++) {
        mContextMappings.insert(
            versitContextMappings[i].contactContext,
            QLatin1String(versitContextMappings[i].versitString));
    }

    // Subtype mappings (insert in reverse order, so first definition (most recent insertion) is found first)
    int subTypeCount = sizeof(versitSubTypeMappings)/sizeof(VersitSubTypeMapping);
    for (int i=(subTypeCount - 1); i >= 0; --i) {
        mSubTypeMappings.insert(
            QLatin1String(versitSubTypeMappings[i].versitString),
            QPair<QContactDetail::DetailType, int>(
                        versitSubTypeMappings[i].detailType,
                        versitSubTypeMappings[i].contactSubType));
    }

    mPluginPropertyHandlers = QVersitContactPluginLoader::instance()->createContactHandlers(profiles);
}

/*!
 * Destructor.
 */
QVersitContactImporterPrivate::~QVersitContactImporterPrivate()
{
    delete mDefaultResourceHandler;
    foreach (QVersitContactHandler* pluginHandler, mPluginPropertyHandlers) {
        delete pluginHandler;
    }
}

/*!
 * Generates a QContact from \a versitDocument.
 */
bool QVersitContactImporterPrivate::importContact(
        const QVersitDocument& document, int contactIndex, QContact* contact,
        QVersitContactImporter::Error* error)
{
    if (document.componentType() != QStringLiteral("VCARD")
        && document.type() != QVersitDocument::VCard21Type
        && document.type() != QVersitDocument::VCard30Type) {
        *error = QVersitContactImporter::InvalidDocumentError;
        return false;
    }
    const QList<QVersitProperty> properties = document.properties();
    if (properties.size() == 0) {
        *error = QVersitContactImporter::EmptyDocumentError;
        return false;
    }

    // First, do the properties with PREF set so they appear first in the contact details
    foreach (const QVersitProperty& property, properties) {
        QStringList typeParameters = property.parameters().values(QStringLiteral("TYPE"));
        if (typeParameters.contains(QStringLiteral("PREF"), Qt::CaseInsensitive))
            importProperty(document, property, contactIndex, contact);
    }
    // ... then, do the rest of the properties.
    foreach (const QVersitProperty& property, properties) {
        QStringList typeParameters = property.parameters().values(QStringLiteral("TYPE"));
        if (!typeParameters.contains(QStringLiteral("PREF"), Qt::CaseInsensitive))
            importProperty(document, property, contactIndex, contact);
    }

    contact->setType(QContactType::TypeContact);

    mRestoreHandler.documentProcessed();
    // run plugin handlers
    foreach (QVersitContactImporterPropertyHandlerV2* handler, mPluginPropertyHandlers) {
        handler->documentProcessed(document, contact);
    }
    // run the v2 handler, if set
    if (mPropertyHandler2 && mPropertyHandlerVersion > 1) {
        mPropertyHandler2->documentProcessed(document, contact);
    }

    return true;
}

void QVersitContactImporterPrivate::importProperty(
        const QVersitDocument& document, const QVersitProperty& property, int contactIndex,
        QContact* contact)
{
    if (mPropertyHandler
        && mPropertyHandlerVersion == 1
        && mPropertyHandler->preProcessProperty(document, property, contactIndex, contact))
        return;

    QPair<QContactDetail::DetailType, int> detailDefinition =
        mDetailMappings.value(property.name());
    QContactDetail::DetailType detailType = detailDefinition.first;

    QList<QContactDetail> updatedDetails;

    bool success = false;

    // The following functions create and save the details to the contact
    switch (detailType) {
    case QContactDetail::TypeAddress:
        success = createAddress(property, contact, &updatedDetails); // pass in group
        break;
    case QContactDetail::TypeAnniversary:
        success = createAnniversary(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeAvatar:
        success = createAvatar(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeBirthday:
        success = createBirthday(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeExtendedDetail:
        success = createExtendedDetail(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeFamily:
        success = createFamily(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeFavorite:
        success = createFavorite(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeGender:
        success = createGender(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeGeoLocation:
        success = createGeoLocation(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeName:
        success = createName(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeNickname:
        success = createNicknames(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeDisplayLabel:
        success = createDisplaylabel(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeOnlineAccount:
        success = createOnlineAccount(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeOrganization:
        success = createOrganization(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypePhoneNumber:
        success = createPhone(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeRingtone:
        success = createRingtone(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeTag:
        success = createTags(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeTimestamp:
        success = createTimeStamp(property, contact, &updatedDetails);
        break;
    case QContactDetail::TypeVersion:
        success = createVersion(property, contact, &updatedDetails);
        break;
    default:
        // Look up mDetailMappings for a simple mapping from property to detail.
        success = createNameValueDetail(property, contact, &updatedDetails);
        break;
    }

    if (mRestoreHandler.propertyProcessed(property, &updatedDetails))
        success = true;

    // run plugin handlers
    foreach (QVersitContactImporterPropertyHandlerV2* handler, mPluginPropertyHandlers) {
        handler->propertyProcessed(document, property, *contact, &success, &updatedDetails);
    }
    // run the v2 handler, if set
    if (mPropertyHandler2 && mPropertyHandlerVersion > 1) {
        mPropertyHandler2->propertyProcessed(document, property, *contact, &success, &updatedDetails);
    }

    foreach (QContactDetail detail, updatedDetails) {
        contact->saveDetail(&detail);
    }

    // run the v1 handler, if set
    if (mPropertyHandler && mPropertyHandlerVersion == 1)
        mPropertyHandler->postProcessProperty(document, property, success, contactIndex, contact);
}
/*!
 * Creates a QContactName from \a property
 */
bool QVersitContactImporterPrivate::createName(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    QContactName name;
    QContactDetail detail = contact->detail(QContactName::Type);
    if (!detail.isEmpty()) {
        // If multiple name properties exist,
        // discard all except the first occurrence
        if (!detail.value(QContactName::FieldFirstName).toString().isEmpty())
            return false;
        else
            name = QContactName(static_cast<QContactName>(detail));
    }

    QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::CompoundType
            || variant.type() != QVariant::StringList)
        return false;
    QStringList values = variant.toStringList();
    QString value(takeFirst(values));
    if (!value.isEmpty())
        name.setLastName(value);
    value = takeFirst(values);
    if (!value.isEmpty())
        name.setFirstName(value);
    value = takeFirst(values);
    if (!value.isEmpty())
        name.setMiddleName(value);
    value = takeFirst(values);
    if (!value.isEmpty())
        name.setPrefix(value);
    value = takeFirst(values);
    if (!value.isEmpty())
        name.setSuffix(value);

    saveDetailWithContext(updatedDetails, name, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactPhoneNumber from \a property
 */
bool QVersitContactImporterPrivate::createPhone(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactPhoneNumber phone;
    QString value(property.value());
    if (value.isEmpty())
        return false;
    phone.setNumber(property.value());
    QStringList subTypes(extractSubTypes(property));
    QList<int> subTypesInt;

    foreach (const QString &stringValue, subTypes) {
        if (!mContextMappings.values().contains(stringValue)) {
            QMultiHash<QString, QPair<QContactDetail::DetailType, int> >::const_iterator
                it = mSubTypeMappings.constFind(stringValue);
            if (it != mSubTypeMappings.constEnd()) {
                int mappedValue = it.value().second;
                subTypesInt << mappedValue;
            }
        }
    }

    if (property.name() == QStringLiteral("X-ASSISTANT-TEL"))
        subTypesInt << QContactPhoneNumber::SubTypeAssistant;
    if (!subTypesInt.isEmpty())
        phone.setSubTypes(subTypesInt);
    saveDetailWithContext(updatedDetails, phone, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactAddress from \a property
 */
bool QVersitContactImporterPrivate::createAddress(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactAddress address;

    QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::CompoundType
            || variant.type() != QVariant::StringList)
        return false;
    QStringList addressParts = variant.toStringList();
    QString value(takeFirst(addressParts));
    if (!value.isEmpty())
        address.setPostOfficeBox(value);
    // There is no setter for the Extended Address in QContactAddress:
    if (!addressParts.isEmpty())
        addressParts.removeFirst();
    value = takeFirst(addressParts);
    if (!value.isEmpty())
        address.setStreet(value);
    value = takeFirst(addressParts);
    if (!value.isEmpty())
        address.setLocality(value);
    value = takeFirst(addressParts);
    if (!value.isEmpty())
        address.setRegion(value);
    value = takeFirst(addressParts);
    if (!value.isEmpty())
        address.setPostcode(value);
    value = takeFirst(addressParts);
    if (!value.isEmpty())
        address.setCountry(value);
    QStringList subTypes(extractSubTypes(property));
    QList<int> subTypesInt;

    foreach (const QString &stringValue, subTypes) {
        QMultiHash<QString, QPair<QContactDetail::DetailType, int> >::const_iterator
            it = mSubTypeMappings.constFind(stringValue);
        if (it != mSubTypeMappings.constEnd()) {
            int mappedValue = it.value().second;
            subTypesInt << mappedValue;
        }
    }

    if (!subTypesInt.isEmpty())
        address.setSubTypes(subTypesInt);

    saveDetailWithContext(updatedDetails, address, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactOrganization from \a property
 */
bool QVersitContactImporterPrivate::createOrganization(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    QContactOrganization organization;
    QPair<QContactDetail::DetailType, int> detailTypeAndFieldName =
        mDetailMappings.value(property.name());
    int fieldName = detailTypeAndFieldName.second;
    QList<QContactOrganization> organizations = contact->details<QContactOrganization>();
    foreach(const QContactOrganization& current, organizations) {
        if (current.value(fieldName).toString().length() == 0) {
            organization = current;
            break;
        }
    }
    if (fieldName == QContactOrganization::FieldName) {
        setOrganizationNames(organization, property);
    } else if (fieldName == QContactOrganization::FieldTitle) {
        organization.setTitle(property.value());
    } else if (fieldName == QContactOrganization::FieldRole) {
        organization.setRole(property.value());
    } else if (fieldName == QContactOrganization::FieldLogoUrl) {
        setOrganizationLogo(organization, property);
    } else if (fieldName == QContactOrganization::FieldAssistantName) {
        organization.setAssistantName(property.value());
    } else {
        return false;
    }

    saveDetailWithContext(updatedDetails, organization, extractContexts(property));
    return true;
}

/*!
 * Set the organization name and department(s) from \a property.
 */
void QVersitContactImporterPrivate::setOrganizationNames(
    QContactOrganization& organization, const QVersitProperty& property) const
{
    QVariant variant = property.variantValue();
    if (property.valueType() == QVersitProperty::CompoundType
        && variant.type() == QVariant::StringList) {
        QStringList values = variant.toStringList();
        QString name(takeFirst(values));
        if (!name.isEmpty())
            organization.setName(name);
        if (!values.isEmpty())
            organization.setDepartment(values);
    }
}

/*!
 * Set the organization logo from \a property.
 */
void QVersitContactImporterPrivate::setOrganizationLogo(
    QContactOrganization& org, const QVersitProperty& property) const
{
    QString location;
    QByteArray data;
    saveDataFromProperty(property, &location, &data);
    if (!location.isEmpty())
        org.setLogoUrl(QUrl(location));
}

/*!
 * Creates a QContactTimeStamp from \a property
 */
bool QVersitContactImporterPrivate::createTimeStamp(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactTimestamp timeStamp;
    QString value(property.value());
    QDateTime dateTime = parseDateTime(value);
    if (!dateTime.isValid())
        return false;
    timeStamp.setLastModified(dateTime);
    saveDetailWithContext(updatedDetails, timeStamp, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactVersion from \a property
 */
bool QVersitContactImporterPrivate::createVersion(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    // Allow only on version detail, discard others.
    QContactDetail detail = contact->detail(QContactVersion::Type);
    if (!detail.isEmpty())
        return false; // Only one version detail is created

    QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::CompoundType
            || variant.type() != QVariant::StringList)
        return false;
    QStringList values = variant.toStringList();
    bool ok;
    QContactVersion version;
    version.setSequenceNumber(takeFirst(values).toInt(&ok));
    version.setExtendedVersion(takeFirst(values).toLocal8Bit());
    if (ok) {
        saveDetailWithContext(updatedDetails, version, extractContexts(property));
        return true;
    } else {
        return false;
    }
}

/*!
 * Creates a QContactAnniversary from \a property
 */
bool QVersitContactImporterPrivate::createAnniversary(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactAnniversary anniversary;
    bool justDate = false;
    QDateTime dateTime = parseDateTime(property.value(), &justDate);
    if (!dateTime.isValid())
        return false;
    if (justDate)
        anniversary.setOriginalDate(dateTime.date());
    else
        anniversary.setOriginalDateTime(dateTime);
    saveDetailWithContext(updatedDetails, anniversary, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactBirthday from \a property
 */
bool QVersitContactImporterPrivate::createBirthday(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactBirthday bday;
    bool justDate = false;
    QDateTime dateTime = parseDateTime(property.value(), &justDate);
    if (!dateTime.isValid())
        return false;
    if (justDate)
        bday.setDate(dateTime.date());
    else
        bday.setDateTime(dateTime);
    saveDetailWithContext(updatedDetails, bday, extractContexts(property));
    return true;
}

/*!
* Creates a QContactDisplayLabel from \a property
*/
bool QVersitContactImporterPrivate::createDisplaylabel(
   const QVersitProperty& property,
   QContact* contact,
   QList<QContactDetail>* updatedDetails)
{
    QString label(property.value());
    if (!label.isEmpty()) {
        QContactDisplayLabel displayLabel;
        QContactDisplayLabel existingDisplayLabel = contact->detail<QContactDisplayLabel>();
        if (!existingDisplayLabel.isEmpty()) {
             displayLabel = existingDisplayLabel;
        }
        displayLabel.setLabel(property.value());
        saveDetailWithContext(updatedDetails, displayLabel, extractContexts(property));
        return true;
    } else {
        return false;
    }
}

/*!
 * Creates QContactNicknames from \a property
 */
bool QVersitContactImporterPrivate::createNicknames(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::ListType
            || variant.type() != QVariant::StringList)
        return false;
    QStringList values = variant.toStringList();
    QList<int> contexts = extractContexts(property);

    // We don't want to make duplicates of existing nicknames
    QSet<QString> existingNicknames;
    foreach (const QContactNickname& nickname, contact->details<QContactNickname>()) {
        existingNicknames.insert(nickname.nickname());
    }
    foreach(const QString& value, values) {
        if (!value.isEmpty() && !existingNicknames.contains(value)) {
            QContactNickname nickname;
            nickname.setNickname(value);
            saveDetailWithContext(updatedDetails, nickname, contexts);
            existingNicknames.insert(value);
        }
    }
    return true;
}

/*!
 * Creates QContactTags from \a property
 */
bool QVersitContactImporterPrivate::createTags(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::ListType
            || variant.type() != QVariant::StringList)
        return false;
    QStringList values = variant.toStringList();
    QList<int> contexts = extractContexts(property);

    // We don't want to make duplicates of existing tags
    QSet<QString> existingTags;
    foreach (const QContactTag& tag, contact->details<QContactTag>()) {
        existingTags.insert(tag.tag());
    }
    foreach(const QString& value, values) {
        if (!value.isEmpty() && !existingTags.contains(value)) {
            QContactTag tag;
            tag.setTag(value);
            saveDetailWithContext(updatedDetails, tag, contexts);
            existingTags.insert(value);
        }
    }
    return true;
}

/*!
 * Creates a QContactOnlineAccount from \a property
 */
bool QVersitContactImporterPrivate::createOnlineAccount(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactOnlineAccount onlineAccount;
    QString value(property.value());
    if (value.isEmpty())
        return false;
    onlineAccount.setAccountUri(property.value());
    if (property.name() == QStringLiteral("X-SIP")) {
        QStringList subTypes = extractSubTypes(property);
        QList<int> subTypesInt;

        foreach (const QString &stringValue, subTypes) {
            QMultiHash<QString, QPair<QContactDetail::DetailType, int> >::const_iterator
                it = mSubTypeMappings.constFind(stringValue);
            if (it != mSubTypeMappings.constEnd()) {
                int mappedValue = it.value().second;
                subTypesInt << mappedValue;
            }
        }
        if (subTypes.isEmpty())
            subTypesInt.append(QContactOnlineAccount::SubTypeSip);
        onlineAccount.setSubTypes(subTypesInt);
    } else if (property.name() == QStringLiteral("X-IMPP") ||
               property.name() == QStringLiteral("IMPP")) {
        QList<int> subTypeImppList;
        subTypeImppList << QContactOnlineAccount::SubTypeImpp;
        onlineAccount.setSubTypes(subTypeImppList);
    } else if (property.name() == QStringLiteral("X-JABBER")) {
        QList<int> subTypeImppList;
        subTypeImppList << QContactOnlineAccount::SubTypeImpp;
        onlineAccount.setSubTypes(subTypeImppList);
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolJabber);
    } else if (property.name() == QStringLiteral("X-AIM")) {
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolAim);
    } else if (property.name() == QStringLiteral("X-ICQ")) {
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolIcq);
    } else if (property.name() == QStringLiteral("X-MSN")) {
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolMsn);
    } else if (property.name() == QStringLiteral("X-QQ")) {
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolQq);
    } else if (property.name() == QStringLiteral("X-YAHOO")) {
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolYahoo);
    } else if (property.name() == QStringLiteral("X-SKYPE") ||
            property.name() == QStringLiteral("X-SKYPE-USERNAME")) {
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolSkype);
    } else {
        onlineAccount.setValue(QContactOnlineAccount::FieldProtocol,
                               QContactOnlineAccount::ProtocolUnknown);
    }

    saveDetailWithContext(updatedDetails, onlineAccount, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactRingtone from \a property
 */
bool QVersitContactImporterPrivate::createRingtone(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QString location;
    QByteArray data;
    if (saveDataFromProperty(property, &location, &data) && !location.isEmpty()) {
        QContactRingtone ringtone;
        ringtone.setAudioRingtoneUrl(location);
        saveDetailWithContext(updatedDetails, ringtone, extractContexts(property));
        return true;
    }
    return false;
}

/*!
 * Creates a QContactAvatar from \a property
 */
bool QVersitContactImporterPrivate::createAvatar(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QString location;
    QByteArray data;
    bool success = false;

    if (saveDataFromProperty(property, &location, &data) && !location.isEmpty()) {
        QContactAvatar avatar;
        avatar.setImageUrl(location);
        saveDetailWithContext(updatedDetails, avatar, extractContexts(property));
        success = true;
    }
    return success;
}

/*!
 * Creates a QContactGeoLocation from \a property
 */
bool QVersitContactImporterPrivate::createGeoLocation(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactGeoLocation geo;
    QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::CompoundType
            || variant.type() != QVariant::StringList)
        return false;
    QStringList values = variant.toStringList();
    bool ok1;
    geo.setLatitude(takeFirst(values).toDouble(&ok1));
    bool ok2;
    geo.setLongitude(takeFirst(values).toDouble(&ok2));

    if (ok1 && ok2) {
        saveDetailWithContext(updatedDetails, geo, extractContexts(property));
        return true;
    } else {
        return false;
    }
}

/*!
 * Creates a QContactFamily from \a property
 */
bool QVersitContactImporterPrivate::createFamily(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    QString val = property.value();
    QContactFamily family = contact->detail<QContactFamily>();
    if (property.name() == QStringLiteral("X-SPOUSE")) {
        if (val.isEmpty())
            return false;
        family.setSpouse(val);
    } else if (property.name() == QStringLiteral("X-CHILDREN")) {
        QVariant variant = property.variantValue();
        if (property.valueType() != QVersitProperty::ListType
                || variant.type() != QVariant::StringList)
            return false;
        QStringList values = variant.toStringList();
        if (values.isEmpty())
            return false;
        family.setChildren(values);
    } else {
        return false;
    }

    saveDetailWithContext(updatedDetails, family, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactFavorite from \a property
 */
bool QVersitContactImporterPrivate::createFavorite(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    QContactDetail detail = contact->detail(QContactFavorite::Type);
    if (!detail.isEmpty()) {
        // If multiple favorite properties exist,
        // discard all except the first occurrence
        return false;
    }

    QContactFavorite favorite;
    QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::CompoundType
            || variant.type() != QVariant::StringList)
        return false;

    QStringList values = variant.toStringList();

    QString value(takeFirst(values));
    if (value.isEmpty())
        return false;
    if (value == QStringLiteral("true"))
        favorite.setFavorite(true);
    else if (value == QStringLiteral("false"))
        favorite.setFavorite(false);
    else
        return false;

    value = takeFirst(values);
    if (value.isEmpty())
        return false;
    bool ok = true;
    int index = value.toInt(&ok);
    if (ok)
        favorite.setIndex(index);
    else
        return false;

    saveDetailWithContext(updatedDetails, favorite, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactGender from \a property
 */
bool QVersitContactImporterPrivate::createGender(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    QContactGender gender;
    QContactDetail detail = contact->detail(QContactGender::Type);
    if (!detail.isEmpty()) {
        // If multiple gender properties exist,
        // discard all except the first occurrence
        if (!detail.value(QContactGender::FieldGender).toBool())
            return false;
        else
            gender = QContactGender(static_cast<QContactGender>(detail));
    }
    QString val = property.value().toUpper();
    if (property.name() != QStringLiteral("X-GENDER") || val.isEmpty())
        return false;
    if (val == QStringLiteral("MALE")) {
        gender.setGender(QContactGender::GenderMale);
    } else if (val == QStringLiteral("FEMALE")) {
        gender.setGender(QContactGender::GenderFemale);
    } else if (val == QStringLiteral("UNSPECIFIED")) {
        gender.setGender(QContactGender::GenderUnspecified);
    } else {
        return false;
    }

    saveDetailWithContext(updatedDetails, gender, extractContexts(property));
    return true;
}

/*!
 * Creates a QContactExtendedDetail from \a property
 */
bool QVersitContactImporterPrivate::createExtendedDetail(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QContactExtendedDetail extendedDetail;
    const QVariant variant = property.variantValue();
    if (property.valueType() != QVersitProperty::CompoundType
            || variant.type() != QVariant::StringList)
        return false;

    QStringList values = variant.toStringList();
    extendedDetail.setName(takeFirst(values));
    QVariant data;
    if (VersitUtils::convertFromJson(takeFirst(values), &data))
        extendedDetail.setData(data);
    else
        return false;

    saveDetailWithContext(updatedDetails, extendedDetail, extractContexts(property));
    return true;
}

/*!
 * Creates a simple name-value contact detail.
 */
bool QVersitContactImporterPrivate::createNameValueDetail(
    const QVersitProperty& property,
    QContact* contact,
    QList<QContactDetail>* updatedDetails)
{
    Q_UNUSED(contact)
    QString value(property.value());
    if (value.isEmpty())
        return false;
    QPair<QContactDetail::DetailType, int> nameAndValueType =
        mDetailMappings.value(property.name());
    if (nameAndValueType.first == QContactDetail::TypeUndefined)
        return false;

    QContactDetail detail(nameAndValueType.first);
    detail.setValue(nameAndValueType.second, value);

    saveDetailWithContext(updatedDetails, detail, extractContexts(property));
    return true;
}

/*!
 * Extracts the list of contexts from \a types
 */
QList<int> QVersitContactImporterPrivate::extractContexts(
    const QVersitProperty& property) const
{
    QStringList types = property.parameters().values(QStringLiteral("TYPE"));
    QList<int> contexts;
    foreach (const QString& type, types) {
        QString value = type.toUpper();
        if (mContextMappings.values().contains(value))
            contexts << mContextMappings.key(value);
    }
    return contexts;
}

/*!
 * Extracts the list of subtypes from \a property
 */
QStringList QVersitContactImporterPrivate::extractSubTypes(
    const QVersitProperty& property) const
{
    QStringList types = property.parameters().values(QStringLiteral("TYPE"));
    QStringList subTypes;
    foreach (const QString& type, types) {
        QString subType = type.toUpper();
        if (subType.length() > 0)
            subTypes += subType;
    }
    return subTypes;
}

/*!
 * Takes the first value in \a list, or an empty QString is if the list is empty.
 */
QString QVersitContactImporterPrivate::takeFirst(QList<QString>& list) const
{
    return list.empty() ? QString() : list.takeFirst();
}

/*!
 * Parses a date and time from text
 */
QDateTime QVersitContactImporterPrivate::parseDateTime(QString value, bool *justDate) const
{
    bool hasTime = false;
    bool utc = value.endsWith(QLatin1Char('Z'), Qt::CaseInsensitive);
    if (utc)
        value.chop(1); // take away z from end;

    QDateTime dateTime;
    if (value.contains(QLatin1Char('-'))) {
        dateTime = QDateTime::fromString(value,Qt::ISODate);
        hasTime = dateTime.isValid() && value.contains(QLatin1Char('T'));
    } else {
        switch (value.length()) {
        case 8:
            dateTime = QDateTime::fromString(value, QStringLiteral("yyyyMMdd"));
            break;
        case 15:
            dateTime = QDateTime::fromString(value, QStringLiteral("yyyyMMddThhmmss"));
            hasTime = true;
            break;
        // default: return invalid
        }
    }

    if (utc)
        dateTime.setTimeSpec(Qt::UTC);

    if (justDate)
        *justDate = !hasTime && !utc; // UTC implies a time of midnight

    return dateTime;
}

/*!
 * Extracts either a location (URI/filepath) from a \a property, or data (eg. if it was base64
 * encoded).  If the property contains data, an attempt is made to save it and the location of the
 * saved resource is recovered to *\a location.  The data is stored into *\a data.
 */
bool QVersitContactImporterPrivate::saveDataFromProperty(const QVersitProperty &property,
                                                            QString *location,
                                                            QByteArray *data) const
{
    bool found = false;
    const QString valueParam = property.parameters().value(QStringLiteral("VALUE")).toUpper();
    QVariant variant(property.variantValue());
    if (variant.type() == QVariant::String
        || valueParam == QStringLiteral("URL")
        || valueParam == QStringLiteral("URI")) {
        *location = property.value();
        found |= !location->isEmpty();
    } else if (variant.type() == QVariant::ByteArray) {
        *data = variant.toByteArray();
        if (!data->isEmpty()) {
            found = true;
            *location = saveContentToFile(property, *data);
        }
    }
    return found;
}

/*!
 * Writes \a data to a file and returns the filename.  \a property specifies the context in which
 * the data was found.
 */
QString QVersitContactImporterPrivate::saveContentToFile(
    const QVersitProperty& property, const QByteArray& data) const
{
    QString filename;
    bool ok = false;
    if (mResourceHandler)
        ok = mResourceHandler->saveResource(data, property, &filename);
    return ok ? filename : QString();
}

/*!
 * Adds \a detail to the \a updatedDetails list.  Also sets the contexts to \a contexts if it is not
 * empty.
 */
void QVersitContactImporterPrivate::saveDetailWithContext(
        QList<QContactDetail>* updatedDetails,
        QContactDetail detail,
        const QList<int>& contexts)
{
    if (!contexts.isEmpty())
        detail.setContexts(contexts);
    updatedDetails->append(detail);
}

QT_END_NAMESPACE_VERSIT
