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#include "contactlistpage.h"

#ifdef BUILD_VERSIT

#include "qversitreader.h"

#include "qversitcontactimporter.h"

#include "qversitwriter.h"

#include "qversitcontactexporter.h"

#endif

#include <QtGui>

ContactListPage::ContactListPage(QWidget *parent)

        : QWidget(parent)

{

    m_manager = 0;

    m_currentFilter = QContactFilter();

    m_backendsCombo = new QComboBox(this);

    QStringList availableManagers = QContactManager::availableManagers();

    m_backendsCombo->addItems(availableManagers);

    connect(m_backendsCombo, SIGNAL(currentIndexChanged(QString)), this, SLOT(backendSelected()));

    m_filterActiveLabel = new QLabel("Inactive");

    m_filterActiveLabel->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));

    m_contactsList = new QListWidget(this);

    QPushButton* m_addContactBtn = new QPushButton("Add", this);

    connect(m_addContactBtn, SIGNAL(clicked()), this, SLOT(addContactClicked()));

    QPushButton* m_editBtn = new QPushButton("Edit", this);

    connect(m_editBtn, SIGNAL(clicked()), this, SLOT(editClicked()));

    QPushButton* m_deleteBtn = new QPushButton("Delete", this);

    connect(m_deleteBtn, SIGNAL(clicked()), this, SLOT(deleteClicked()));

    QPushButton* m_filterBtn = new QPushButton("Filter", this);

    connect(m_filterBtn, SIGNAL(clicked()), this, SLOT(filterClicked()));

    QPushButton* m_importBtn = new QPushButton("Import");

    connect(m_importBtn, SIGNAL(clicked()), this, SLOT(importClicked()));

    QPushButton* m_exportBtn = new QPushButton("Export");

    connect(m_exportBtn, SIGNAL(clicked()), this, SLOT(exportClicked()));

    QFormLayout *backendLayout = new QFormLayout;

    backendLayout->addRow("Store:", m_backendsCombo);

    backendLayout->addRow("Filter:", m_filterActiveLabel);

    QHBoxLayout *btnLayout1 = new QHBoxLayout;

    btnLayout1->addWidget(m_addContactBtn);

    btnLayout1->addWidget(m_editBtn);

    btnLayout1->addWidget(m_deleteBtn);

    btnLayout1->addWidget(m_filterBtn);

    QHBoxLayout *btnLayout2 = new QHBoxLayout;

    btnLayout2->addWidget(m_importBtn);

    btnLayout2->addWidget(m_exportBtn);

    QVBoxLayout *bookLayout = new QVBoxLayout;

    bookLayout->addLayout(backendLayout);

    bookLayout->addWidget(m_contactsList);

    bookLayout->addLayout(btnLayout1);

#ifdef BUILD_VERSIT

    bookLayout->addLayout(btnLayout2);

#endif

    setLayout(bookLayout);

    // force update to backend.

    QTimer::singleShot(0, this, SLOT(backendSelected()));

}

ContactListPage::~ContactListPage()

{

    QList<QContactManager*> initialisedManagers = m_initialisedManagers.values();

    while (!initialisedManagers.isEmpty()) {

        QContactManager *deleteMe = initialisedManagers.takeFirst();

        delete deleteMe;

    }

}

void ContactListPage::backendSelected()

{

    QString backend = m_backendsCombo->currentText();

    // first, check to see if they reselected the same backend.

    if (m_manager && m_manager->managerName() == backend)

        return;

    // the change is real.  update.

    if (m_initialisedManagers.contains(backend)) {

        m_manager = m_initialisedManagers.value(backend);

    } else {

        m_manager = new QContactManager(backend);

        m_initialisedManagers.insert(backend, m_manager);

    }

    // signal that the manager has changed.

    emit managerChanged(m_manager);

    // and... rebuild the list.

    rebuildList(m_currentFilter);

}

void ContactListPage::rebuildList(const QContactFilter& filter)

{

    // first, check to see whether the filter does anything

    if (filter == QContactFilter())

        m_filterActiveLabel->setText("Inactive");

    else

        m_filterActiveLabel->setText("Active");

    QContact currContact;

    m_currentFilter = filter;

    m_contactsList->clear();

    m_idToListIndex.clear();

    QList<QContactLocalId> contactIds = m_manager->contactIds(m_currentFilter);

    foreach (const QContactLocalId& id, contactIds) {

        QListWidgetItem *currItem = new QListWidgetItem;

        currContact = m_manager->contact(id);

        currItem->setData(Qt::DisplayRole, currContact.displayLabel());

        currItem->setData(Qt::UserRole, currContact.localId()); // also store the id of the contact.

        m_idToListIndex.insert(currContact.localId(), m_contactsList->count());

        m_contactsList->addItem(currItem);

    }

}

void ContactListPage::addContactClicked()

{

    emit showEditorPage(QContactLocalId(0));

}

void ContactListPage::editClicked()

{

    if (m_contactsList->currentItem())

        emit showEditorPage(QContactLocalId(m_contactsList->currentItem()->data(Qt::UserRole).toUInt()));

    // else, nothing selected; ignore.

}

void ContactListPage::filterClicked()

{

    emit showFilterPage(m_currentFilter);

}

void ContactListPage::deleteClicked()

{

    if (!m_manager) {

        qWarning() << "No manager selected; cannot delete.";

        return;

    }

    if (!m_contactsList->currentItem()) {

        qWarning() << "Nothing to delete.";

        return;

    }

    QContactLocalId contactId = QContactLocalId(m_contactsList->currentItem()->data(Qt::UserRole).toUInt());

    bool success = m_manager->removeContact(contactId);

    if (success) {

        delete m_contactsList->takeItem(m_contactsList->currentRow());

        QMessageBox::information(this, "Success!", "Contact deleted successfully!");

    }

    else

        QMessageBox::information(this, "Failed!", "Failed to delete contact!");

}

void ContactListPage::importClicked()

{

#ifdef BUILD_VERSIT

    if (!m_manager) {

        qWarning() << "No manager selected; cannot import";

        return;

    }

    QString fileName = QFileDialog::getOpenFileName(this,

       tr("Select vCard file"), ".", tr("vCard files (*.vcf)"));

    QFile file(fileName);

    file.open(QIODevice::ReadOnly);

    if (file.isReadable()) {

        QVersitReader reader;

        reader.setDevice(&file);

        if (reader.startReading() && reader.waitForFinished()) {

            QVersitContactImporter importer;

            QList<QContact> contacts = importer.importContacts(reader.results());

            QMap<int, QContactManager::Error> errorMap;

            m_manager->saveContacts(&contacts, &errorMap);

            rebuildList(m_currentFilter);

        }

    }

#endif

}

void ContactListPage::exportClicked()

{

#ifdef BUILD_VERSIT

    if (!m_manager) {

        qWarning() << "No manager selected; cannot import";

        return;

    }

    QList<QContact> contacts = m_manager->contacts(QList<QContactSortOrder>(), QStringList());

    QString fileName = QFileDialog::getSaveFileName(this, tr("Save vCard"),

                                                    "./contacts.vcf",

                                                    tr("vCards (*.vcf)"));

    QFile file(fileName);

    file.open(QIODevice::WriteOnly);

    if (file.isWritable()) {

        QVersitContactExporter exporter;

        QList<QVersitDocument> documents = exporter.exportContacts(contacts);

        QVersitWriter writer;

        writer.setDevice(&file);

        writer.startWriting(documents);

        writer.waitForFinished();

    }

#endif

}