#include "mainwindow.h"
#include "ui_mainwindow.h"

#include <QFile>
#include <QTimer>
#include <QtNetwork/QNetworkReply>

class QNetworkReply;
namespace yremote {

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    setFixedSize(size());
#if defined(Q_OS_WIN)
    setWindowFlags(windowFlags() | Qt::MSWindowsFixedSizeDialogHint);
#endif

    mSettings = new QSettings(QSettings::IniFormat, QSettings::UserScope, "RogoSoftware", "yremote");
    mNetworkManager = new QNetworkAccessManager(this);

    restoreGeometry(mSettings->value("geometry", saveGeometry()).toByteArray());
    move(mSettings->value("pos", pos()).toPoint());

    ui->txt_address->setText(mSettings->value("av_address", "").toString());
    mAddress = ui->txt_address->text();

    // setup volume value collection
    connect(&mTimerValCollect, &QTimer::timeout, this, &MainWindow::sendVolume);
    mTimerValCollect.setSingleShot(true);

    connect(&mTimerUpdateAddress, &QTimer::timeout, this, &MainWindow::updateAVState);
    mTimerUpdateAddress.setSingleShot(true);

    // load initial data and set update rate
    updateAVState();
    connect(&mTimerUpdateState, &QTimer::timeout, this, &MainWindow::updateAVState);
    mTimerUpdateState.start(TIME_UPDATE_STATE);

    QFile css(":style.css");
    if (css.open(QFile::ReadOnly | QFile::Text))
        this->setStyleSheet(css.readAll());
}

MainWindow::~MainWindow()
{
    delete ui;
    delete mSettings;
    delete mNetworkManager;
}

void MainWindow::sendCommand(QString cmd)
{
    QNetworkRequest request;
    request.setUrl("http://" + mAddress + ":80/YamahaRemoteControl/ctrl");
    request.setRawHeader("Content-Type", "text/xml; charset=UTF-8");
    request.setRawHeader("Content-Length", QByteArray::number(cmd.size()));

    mNetworkManager->post(request, cmd.toUtf8());
    connect(mNetworkManager, &QNetworkAccessManager::finished, this, &MainWindow::replyFinished);
}

void MainWindow::replyFinished(QNetworkReply* reply)
{
    QString ans;

    if(reply->error() == QNetworkReply::NoError) {
        QByteArray data = reply->readAll();
        ans = QString(data);
    } else {
        qDebug() << reply->url();
        qDebug() << reply->errorString();

        mPowered = false;
    }

    // check power state
    QRegularExpression regexPower("<Power_Control><Power>(.+)</Power></Power_Control>");
    QRegularExpressionMatch matchPower = regexPower.match(ans);
    if (matchPower.hasMatch()) {
        if (matchPower.captured(1) == "On") mPowered = true;
        else if (matchPower.captured(1) == "Off") mPowered = false;
    }

    // check volume
    QRegularExpression regexVolume("<Volume><Lvl><Val>(.+)</Val>");
    QRegularExpressionMatch matchVolume = regexVolume.match(ans);
    if (matchVolume.hasMatch()) {
        mVolume = matchVolume.captured(1).toInt();
    }

    // check input
    QRegularExpression regexInput("<Input><Input_Sel>(.+)</Input_Sel>");
    QRegularExpressionMatch matchInput = regexInput.match(ans);
    if (matchInput.hasMatch())
        mInput = matchInput.captured(1);

    reply->deleteLater();
    updateUi();
}

void MainWindow::updateUi() {
    ui->dial->setEnabled(mPowered);
    ui->dial->setValue(mVolume);
    ui->lbl_volume->setEnabled(mPowered);
    ui->btn_hdmi1->setEnabled(mPowered);
    ui->btn_hdmi2->setEnabled(mPowered);
    ui->btn_hdmi3->setEnabled(mPowered);
    ui->btn_spotify->setEnabled(mPowered);
    ui->btn_airplay->setEnabled(mPowered);
    ui->btn_audioin->setEnabled(mPowered);

    setActiveButton(mInput);
    setPowerState();
}

void MainWindow::setActiveButton(QString prop)
{
    for (QObject *q : ui->groupBox->children()) {
        QPushButton *b = dynamic_cast<QPushButton*>(q);
        if (b){
            if (b->property("input") == prop)
                b->setStyleSheet("background-color: #24e895; color: #404040;");
            else
                b->setStyleSheet("");
        }
    }
}

void MainWindow::setPowerState()
{
    if (mPowered) {
        ui->btn_onoff->setText("On");
        ui->btn_onoff->setStyleSheet("background-color: #24e895; color: #404040;");
        ui->lbl_volume->setStyleSheet("color: #24e895");
        ui->dial->setStyleSheet("background-color: #24e895");
    } else {
        ui->btn_onoff->setText("Off");
        ui->btn_onoff->setStyleSheet("");
        ui->lbl_volume->setStyleSheet("");
        ui->dial->setStyleSheet("");
        setActiveButton("");
    }
}

void MainWindow::on_txt_address_textEdited(const QString &arg1)
{
    mAddress = arg1;
    mSettings->setValue("av_address", mAddress);
    mTimerUpdateAddress.start(TIME_UPDATE_ADDRESS);
}

void MainWindow::on_btn_onoff_clicked()
{
    if (mPowered){
        sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone>"
                    "<Power_Control><Power>Standby</Power></Power_Control>"
                    "</Main_Zone></YAMAHA_AV>");

    } else {
        sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone>"
                    "<Power_Control><Power>On</Power></Power_Control>"
                    "</Main_Zone></YAMAHA_AV>");
    }
    mPowered = !mPowered;
    updateUi();
}

void MainWindow::on_dial_valueChanged(int value)
{
    int d = value % 10;

    if (!( d == -5 || d == 0 ))
        value -= d;

    ui->lbl_volume->setText(QString::number(value));
    mVolume = value;
    mTimerValCollect.start(TIME_VOL_COLLECT);
}

void MainWindow::sendVolume()
{
    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Volume><Lvl><Val>"
                + QString::number(mVolume)
                + "</Val><Exp>1</Exp><Unit>dB</Unit></Lvl></Volume></Main_Zone></YAMAHA_AV>");
}

void MainWindow::moveEvent(QMoveEvent *)
{
    mSettings->setValue("geometry", geometry());
    mSettings->setValue("pos", pos());
}

void MainWindow::updateAVState()
{
    sendCommand("<YAMAHA_AV cmd=\"GET\"><System><Power_Control><Power>GetParam</Power></Power_Control></System></YAMAHA_AV>");
    sendCommand("<YAMAHA_AV cmd=\"GET\"><Main_Zone><Volume><Lvl>GetParam</Lvl></Volume></Main_Zone></YAMAHA_AV>");
    sendCommand("<YAMAHA_AV cmd=\"GET\"><Main_Zone><Input><Input_Sel>GetParam</Input_Sel></Input></Main_Zone></YAMAHA_AV>");
}

void MainWindow::on_btn_hdmi1_clicked()
{
    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Input><Input_Sel>HDMI1</Input_Sel></Input></Main_Zone></YAMAHA_AV>");
    mInput = "HDMI1";
}

void MainWindow::on_btn_hdmi2_clicked()
{
    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Input><Input_Sel>HDMI2</Input_Sel></Input></Main_Zone></YAMAHA_AV>");
    mInput = "HDMI2";
}

void MainWindow::on_btn_hdmi3_clicked()
{
    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Input><Input_Sel>HDMI3</Input_Sel></Input></Main_Zone></YAMAHA_AV>");
    mInput = "HDMI3";
}

void MainWindow::on_btn_spotify_clicked()
{
    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Input><Input_Sel>Spotify</Input_Sel></Input></Main_Zone></YAMAHA_AV>");
    mInput = "Spotify";
}

void MainWindow::on_btn_airplay_clicked()
{
    // TODO
    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Input><Input_Sel>IPOD</Input_Sel></Input></Main_Zone></YAMAHA_AV>");
    mInput = "IPOD";
}

void MainWindow::on_btn_audioin_clicked()
{
    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Input><Input_Sel>AUDIO</Input_Sel></Input></Main_Zone></YAMAHA_AV>");
    mInput = "AUDIO";
}

}