/*
 * Copyright 2008-2009 Ben Boeckel <MathStuf@gmail.com>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

// Header include
#include "SoundUI.h"

// Sigmod includes
#include <sigmod/Game.h>
#include <sigmod/Sound.h>

// KDE includes
#include <KFileDialog>
#include <KLineEdit>
#include <KMessageBox>
#include <KPushButton>
#include <KUrl>

// Phonon includes
#include <Phonon/AudioOutput>
#include <Phonon/MediaObject>
#include <Phonon/SeekSlider>
#include <Phonon/VolumeSlider>

// Qt includes
#include <QtCore/QBuffer>
#include <QtCore/QFile>
#include <QtCore/QTime>
#include <QtGui/QLabel>
#include <QtGui/QVBoxLayout>
#include <QtUiTools/QUiLoader>

using namespace Sigmod;
using namespace Sigmodr::Widgets;

SoundUI::SoundUI(Sound* sound, QWidget* parent) :
        ObjectUI(parent),
        m_output(new Phonon::AudioOutput(Phonon::MusicCategory, this)),
        m_media(new Phonon::MediaObject(this)),
        m_buffer(new QBuffer)
{
    setObjects(sound, new Sound(*sound));
}

SoundUI::~SoundUI()
{
    delete m_media;
    delete m_buffer;
}

void SoundUI::initGui()
{
    QFile file(":/gui/sound.ui");
    file.open(QFile::ReadOnly);
    QWidget *formWidget = QUiLoader().load(&file, this);
    file.close();
    ui_name = formWidget->findChild<KLineEdit*>("varName");
    Phonon::SeekSlider* seeker = formWidget->findChild<Phonon::SeekSlider*>("seeker");
    ui_time = formWidget->findChild<QLabel*>("label");
    ui_play = formWidget->findChild<KPushButton*>("buttonPlay");
    ui_stop = formWidget->findChild<KPushButton*>("buttonStop");
    Phonon::VolumeSlider* sliderVolume = formWidget->findChild<Phonon::VolumeSlider*>("sliderVolume");
    KPushButton* buttonBrowse = formWidget->findChild<KPushButton*>("buttonBrowse");
    Phonon::createPath(m_media, m_output);
    m_media->setTickInterval(100);
    seeker->setMediaObject(m_media);
    sliderVolume->setAudioOutput(m_output);
    connect(m_media, SIGNAL(tick(qint64)), this, SLOT(tick(qint64)));
    connect(m_media, SIGNAL(stateChanged(Phonon::State, Phonon::State)), this, SLOT(stateChanged(Phonon::State)));
    connect(ui_play, SIGNAL(clicked()), m_media, SLOT(play()));
    connect(ui_stop, SIGNAL(clicked()), m_media, SLOT(stop()));
    QVBoxLayout* layout = new QVBoxLayout;
    layout->addWidget(formWidget);
    setLayout(layout);
    ui_play->setIcon(KIcon("media-playback-start"));
    ui_stop->setIcon(KIcon("media-playback-stop"));
    buttonBrowse->setIcon(KIcon("document-open"));
}

void SoundUI::refreshGui()
{
    resetAudioData();
}

void SoundUI::setGui()
{
    ui_name->setText(qobject_cast<Sound*>(modified())->name());
}

void SoundUI::apply()
{
    *qobject_cast<Sound*>(original()) = *qobject_cast<Sound*>(modified());
    emit(changed(false));
}

void SoundUI::discard()
{
    *qobject_cast<Sound*>(modified()) = *qobject_cast<Sound*>(original());
    setGui();
    emit(changed(false));
}

void SoundUI::nameChanged(const QString& name)
{
    const int cursor = ui_name->cursorPosition();
    qobject_cast<Sound*>(modified())->setName(name);
    ui_name->setCursorPosition(cursor);
}

void SoundUI::browse()
{
    QFile file(KFileDialog::getOpenFileName(KUrl("kfiledialog:///audio"), "audio/*|Audio files", this));
    if (file.open(QIODevice::ReadOnly))
    {
        qobject_cast<Sound*>(modified())->setData(file.readAll());
        file.close();
        resetAudioData();
    }
}

void SoundUI::stateChanged(Phonon::State newState)
{
    switch (newState)
    {
        case Phonon::ErrorState:
            if (m_media->errorType() == Phonon::FatalError)
                KMessageBox::warningContinueCancel(this, "Fatal Error", m_media->errorString());
            else
                KMessageBox::warningContinueCancel(this, "Error", m_media->errorString());
            break;
        case Phonon::PlayingState:
            disconnect(ui_play, SIGNAL(clicked()), m_media, SLOT(play()));
            connect(ui_play, SIGNAL(clicked()), m_media, SLOT(pause()));
            ui_play->setIcon(KIcon("media-playback-pause"));
            ui_stop->setEnabled(true);
            break;
        case Phonon::StoppedState:
            disconnect(ui_play, SIGNAL(clicked()), m_media, SLOT(play()));
            disconnect(ui_play, SIGNAL(clicked()), m_media, SLOT(pause()));
            connect(ui_play, SIGNAL(clicked()), m_media, SLOT(play()));
            ui_play->setIcon(KIcon("media-playback-start"));
            ui_stop->setEnabled(false);
            tick(0);
            break;
        case Phonon::PausedState:
            disconnect(ui_play, SIGNAL(clicked()), m_media, SLOT(play()));
            disconnect(ui_play, SIGNAL(clicked()), m_media, SLOT(pause()));
            connect(ui_play, SIGNAL(clicked()), m_media, SLOT(play()));
            ui_play->setIcon(KIcon("media-playback-start"));
            ui_stop->setEnabled(true);
            break;
        default:
            break;
    }
}

void SoundUI::resetAudioData()
{
    m_media->stop();
    m_buffer->setData(qobject_cast<Sound*>(modified())->data());
    m_media->setCurrentSource(m_buffer);
    tick(0);
}

void SoundUI::tick(qint64 time)
{
    QTime currentTime(0, (time / 60000) % 60, (time / 1000) % 60, time % 1000);
    qint64 total = m_media->totalTime();
    QTime totalTime(0, (total / 60000) % 60, (total / 1000) % 60, total % 1000);
    ui_time->setText(QString("%1 / %2").arg(currentTime.toString("mm:ss.zzz")).arg(totalTime.toString("mm:ss.zzz")));
}