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#include <QtGui>

#include <QDebug>

#include <qservicemanager.h>

#include <qserviceinterfacedescriptor.h>

#include "todotool.h"

Q_DECLARE_METATYPE(QServiceInterfaceDescriptor)

ToDoTool::ToDoTool(QWidget *parent, Qt::WindowFlags flags)

    : QWidget(parent, flags)

{

    setupUi(this);

    serviceManager = new QServiceManager(this);

    registerExampleServices();

    setWindowTitle(tr("ToDoTool"));

    init();

}

ToDoTool::~ToDoTool()

{

    unregisterExampleServices();

}

void ToDoTool::soundAlarm(const QDateTime& alarm)

{

    QString message = notesObject->property("message").toString();

    QMessageBox msgBox;

    msgBox.setWindowTitle("Alert");

    msgBox.setText(alarm.toString() + "\n\n" + message);

    msgBox.exec();

}

void ToDoTool::init()

{

    QServiceManager mgr;

    QServiceFilter filter;

    filter.setServiceName("NotesManagerService");

    QList<QServiceInterfaceDescriptor> list = serviceManager->findInterfaces(filter);

    notesObject = mgr.loadInterface(list[0]);

    if (notesObject)

        notesObject->setParent(this);

    {

        currentNote = 1;

        searchWord = "";    

        refreshList();

        QObject::connect(notesObject, SIGNAL(soundAlarm(QDateTime)), 

                         this, SLOT(soundAlarm(QDateTime)));

    }

}

void ToDoTool::registerExampleServices()

{

    QStringList exampleXmlFiles;

    exampleXmlFiles << "notesmanagerservice.xml";

    foreach (const QString &fileName, exampleXmlFiles) {

        QString path = QCoreApplication::applicationDirPath() + "/xmldata/" + fileName;

        serviceManager->addService(path);

    }

}

void ToDoTool::unregisterExampleServices()

{

    serviceManager->removeService("DatabaseManagerService");

}

void ToDoTool::refreshList()

{

        QMetaObject::invokeMethod(notesObject, "getNotes", 

                                  Q_RETURN_ARG(QList<Note>, ret),

                                  Q_ARG(QString, searchWord)); 

        totalNotes = ret.size();

        if (totalNotes < 1)

            currentNote = 0;

        refreshNotes();

}

void ToDoTool::refreshNotes()

{

    countLabel->setText(QString::number(currentNote) + "/" + QString::number(totalNotes));

    if (currentNote == 0) {

        dateLabel->setText("");

        noteLabel->setText("Click + to add a note");

    }

    else {

        dateLabel->setText(ret[currentNote-1].alert.toString());

        noteLabel->setText(ret[currentNote-1].message);

    }

}

void ToDoTool::on_nextButton_clicked()

{

    if (currentNote < totalNotes) {

        currentNote++;

        refreshNotes();

    }

}

void ToDoTool::on_prevButton_clicked()

{

    if (currentNote > 1) {

        currentNote--;

        refreshNotes();

    }

}

void ToDoTool::on_addButton_clicked()

{

    // re-implement date-time input method

    bool ok;

    QString newNote = QInputDialog::getText(this, tr("ToDoTool"), 

                                            tr("Add a new note + alarm of format:\nnote#yyyy-mm-dd#hh:mm"), 

                                            QLineEdit::Normal, QDir::home().dirName(), &ok);

    if (ok && !newNote.isEmpty()) {

        QStringList note = newNote.split(QRegExp("#"));

        if (note.size() == 3) {

            QStringList date = note.at(1).split("-");

            QStringList time = note.at(2).split(":");

            if (date.size() == 3 && time.size() == 2) {

                QDateTime alarm = QDateTime::fromString(note.at(1)+" "+note.at(2),"yyyy-MM-dd HH:mm");

                QMetaObject::invokeMethod(notesObject, "addNote",

                                          Q_ARG(QString, note.at(0)),

                                          Q_ARG(QDateTime, alarm));

                refreshList();

            }

        } else {

                QMetaObject::invokeMethod(notesObject, "addNote",

                                          Q_ARG(QString, note.at(0)),

                                          Q_ARG(QDateTime, QDateTime::currentDateTime()));

        }

        refreshList();

    }

}

void ToDoTool::on_deleteButton_clicked()

{

    if (currentNote != 0) {

        QMessageBox msgBox;

        msgBox.setWindowTitle("ToDoTool");

        msgBox.setText("Are you sure you want to remove this note item?");

        msgBox.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);

        if (msgBox.exec() == QMessageBox::Ok) {

            int index = ret[currentNote-1].index;

            QMetaObject::invokeMethod(notesObject, "removeNote", Q_ARG(int, index));

            if (currentNote > 1)

                currentNote--;

            refreshList();

        }

    }

}

void ToDoTool::on_searchButton_clicked()

{

    bool ok;

    QString searchNote = QInputDialog::getText(this, tr("ToDoTool"), tr("Find a note:"),

                                               QLineEdit::Normal, QDir::home().dirName(), &ok);

    if (ok) {

        if (searchNote.isEmpty())

            searchWord = "";

        else

            searchWord = searchNote;

        currentNote = 1;

        refreshList();

    }

}