view main/Surveyer.cpp @ 1583:0510dea7ef84 dev/refactor-piper-related

Introduce some POD structs for describing an external server application and the desired libraries to load from it, and disambiguating between empty list request and invalid list request. This allows for overriding PiperVampPluginFactory behaviour for using a PluginScan to populate the list request.

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    
    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 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "Surveyer.h"

#include <iostream>

#include <QNetworkAccessManager>

#include <QSettings>
#include <QMessageBox>
#include <QDesktopServices>
#include <QPushButton>
#include <QUrl>

#include "../version.h"

#include "transform/TransformFactory.h"
#include "plugin/PluginIdentifier.h"

Surveyer::Surveyer(QString hostname, QString testPath, QString surveyPath) :
    m_httpFailed(false),
    m_hostname(hostname),
    m_testPath(testPath),
    m_surveyPath(surveyPath),
    m_reply(0),
    m_nm(new QNetworkAccessManager)
{
    QSettings settings;
    settings.beginGroup("Survey");
    if (!settings.contains("countdown")) {
        settings.setValue("countdown", 15);
        settings.endGroup();
        return;
    }
    int countdown = settings.value("countdown").toInt();
    if (countdown == 0) {
        // The countdown value will now remain 0 until we have
        // successfully tested for a survey and offered it to the
        // user.  If the survey doesn't exist any more, then we'll
        // simply never present it to the user and the countdown will
        // remain 0 forever.  If the survey does exist, then we offer
        // the user the chance to respond to it and (regardless of
        // whether they want to or not) set the countdown to -1 so
        // that it is never offered again.
        QUrl url(QString("http://%1/%2").arg(m_hostname).arg(m_testPath));
        cerr << "Surveyer: Test URL is " << url << endl;
        m_reply = m_nm->get(QNetworkRequest(url));
        connect(m_reply, SIGNAL(error(QNetworkReply::NetworkError)),
                this, SLOT(error(QNetworkReply::NetworkError)));
        connect(m_reply, SIGNAL(finished()), this, SLOT(finished()));
    } else if (countdown > 0) {
        settings.setValue("countdown", countdown-1);
    }
    settings.endGroup();
}

Surveyer::~Surveyer()
{
    if (m_reply) {
        m_reply->abort();
        m_reply->deleteLater();
    }
    delete m_nm;
}

void
Surveyer::error(QNetworkReply::NetworkError)
{
    cerr << "Surveyer: error: " << m_reply->errorString() << endl;
    m_httpFailed = true;
}

void
Surveyer::finished()
{
    if (m_httpFailed) return;

    QString title = "Sonic Visualiser - User Survey";
    QString text = "<h3>Sonic Visualiser: Take part in our survey!</h3><p>We at Queen Mary, University of London are running a short survey for users of Sonic Visualiser.  We are trying to find out how useful Sonic Visualiser is to people, and what we can do to improve it.</p><p>We do not ask for any personal information, and it should only take five minutes.</p><p>Would you like to take part?</p>";

    QMessageBox mb(dynamic_cast<QWidget *>(parent()));
    mb.setWindowTitle(title);
    mb.setText(text);

    QPushButton *yes = mb.addButton(tr("Yes! Take me to the survey"), QMessageBox::ActionRole);
    mb.addButton(tr("No, thanks"), QMessageBox::RejectRole);

    mb.exec();

    QSettings settings;
    settings.beginGroup("Survey");
    settings.setValue("countdown", -1);
    settings.endGroup();

    if (mb.clickedButton() == yes) {
        QString svarg = SV_VERSION;
        QString platformarg = "unknown";
#ifdef Q_OS_WIN32
        platformarg = "win32";
#else
#ifdef Q_OS_MAC
        platformarg = "osx";
#else
        platformarg = "posix";
#endif
#endif
        QString plugsarg;
        TransformFactory *tf = TransformFactory::getInstance();
        if (tf) {
            TransformList tl = tf->getAllTransformDescriptions();
            std::set<QString> packages;
            for (size_t i = 0; i < tl.size(); ++i) {
                TransformId id = tl[i].identifier;
                Transform t;
                t.setIdentifier(id);
                QString plugid = t.getPluginIdentifier();
                QString type, soname, label;
                PluginIdentifier::parseIdentifier(plugid, type, soname, label);
                if (type == "vamp") packages.insert(soname);
            }
            for (std::set<QString>::const_iterator i = packages.begin();
                 i != packages.end(); ++i) {
                if (plugsarg != "") plugsarg = plugsarg + ",";
                plugsarg = plugsarg + *i;
            }
        }
        QDesktopServices::openUrl(QUrl(QString("http://%1/%2?sv=%3&plugs=%4&platform=%5").arg(m_hostname).arg(m_surveyPath).arg(svarg).arg(plugsarg).arg(platformarg)));
    }
}