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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "productlistmodel.h"
#include "marketplaceplugin.h"
#include <utils/algorithm.h>
#include <utils/executeondestruction.h>
#include <utils/networkaccessmanager.h>
#include <utils/qtcassert.h>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QPixmapCache>
#include <QRegularExpression>
#include <QTimer>
#include <QUrl>
namespace Marketplace {
namespace Internal {
static const QNetworkRequest constructRequest(const QString &collection)
{
QString url("https://marketplace.qt.io");
if (collection.isEmpty())
url.append("/collections.json");
else
url.append("/collections/").append(collection).append("/products.json");
return QNetworkRequest(url);
}
static const QString plainTextFromHtml(const QString &original)
{
QString plainText(original);
QRegularExpression breakReturn("<\\s*br/?\\s*>", QRegularExpression::CaseInsensitiveOption);
plainText.replace(breakReturn, "\n"); // "translate" <br/> into newline
plainText.remove(QRegularExpression("<[^>]*>")); // remove all tags
plainText = plainText.trimmed();
plainText.replace(QRegularExpression("\n{3,}"), "\n\n"); // consolidate some newlines
// FIXME the description text is usually too long and needs to get elided sensibly
return (plainText.length() > 157) ? plainText.left(157).append("...") : plainText;
}
ProductListModel::ProductListModel(QObject *parent)
: Core::ListModel(parent)
{
}
void ProductListModel::updateCollections()
{
emit toggleProgressIndicator(true);
QNetworkReply *reply = Utils::NetworkAccessManager::instance()->get(constructRequest({}));
connect(reply, &QNetworkReply::finished,
this, [this, reply]() { onFetchCollectionsFinished(reply); });
}
QPixmap ProductListModel::fetchPixmapAndUpdatePixmapCache(const QString &url) const
{
const_cast<ProductListModel *>(this)->queueImageForDownload(url);
return QPixmap();
}
void ProductListModel::onFetchCollectionsFinished(QNetworkReply *reply)
{
QTC_ASSERT(reply, return);
Utils::ExecuteOnDestruction replyDeleter([reply]() { reply->deleteLater(); });
if (reply->error() == QNetworkReply::NoError) {
const QJsonDocument doc = QJsonDocument::fromJson(reply->readAll());
if (doc.isNull())
return;
const QJsonArray collections = doc.object().value("collections").toArray();
for (int i = 0, end = collections.size(); i < end; ++i) {
const QJsonObject obj = collections.at(i).toObject();
const auto handle = obj.value("handle").toString();
const int productsCount = obj.value("products_count").toInt();
if (productsCount > 0 && handle != "all-products" && handle != "qt-education-1")
m_pendingCollections.append(handle);
}
if (!m_pendingCollections.isEmpty())
fetchCollectionsContents();
} else {
QVariant status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
if (status.isValid() && status.toInt() == 430)
QTimer::singleShot(30000, this, &ProductListModel::updateCollections);
else
emit errorOccurred(reply->error(), reply->errorString());
}
}
void ProductListModel::onFetchSingleCollectionFinished(QNetworkReply *reply)
{
emit toggleProgressIndicator(false);
QTC_ASSERT(reply, return);
Utils::ExecuteOnDestruction replyDeleter([reply]() { reply->deleteLater(); });
QList<Core::ListItem *> productsForCollection;
if (reply->error() == QNetworkReply::NoError) {
const QJsonDocument doc = QJsonDocument::fromJson(reply->readAll());
if (doc.isNull())
return;
const QJsonArray products = doc.object().value("products").toArray();
for (int i = 0, end = products.size(); i < end; ++i) {
const QJsonObject obj = products.at(i).toObject();
const QString handle = obj.value("handle").toString();
bool foundItem = Utils::findOrDefault(m_items, [handle](const Core::ListItem *it) {
return static_cast<const ProductItem *>(it)->handle == handle;
});
if (foundItem)
continue;
ProductItem *product = new ProductItem;
product->name = obj.value("title").toString();
product->description = plainTextFromHtml(obj.value("body_html").toString());
product->handle = handle;
for (auto val : obj.value("tags").toArray())
product->tags.append(val.toString());
const auto images = obj.value("images").toArray();
if (!images.isEmpty()) {
auto imgObj = images.first().toObject();
const QJsonValue imageSrc = imgObj.value("src");
if (imageSrc.isString())
product->imageUrl = imageSrc.toString();
}
productsForCollection.append(product);
}
if (!productsForCollection.isEmpty()) {
beginInsertRows(QModelIndex(), m_items.size(), m_items.size() + productsForCollection.size());
m_items.append(productsForCollection);
endInsertRows();
}
} else {
// bad.. but we still might be able to fetch another collection
qWarning() << "Failed to fetch collection:" << reply->errorString() << reply->error();
}
if (!m_pendingCollections.isEmpty()) // more collections? go ahead..
fetchCollectionsContents();
else if (m_items.isEmpty())
emit errorOccurred(0, "Failed to fetch any collection.");
}
void ProductListModel::fetchCollectionsContents()
{
QTC_ASSERT(!m_pendingCollections.isEmpty(), return);
const QString collection = m_pendingCollections.dequeue();
QNetworkReply *reply
= Utils::NetworkAccessManager::instance()->get(constructRequest(collection));
connect(reply, &QNetworkReply::finished,
this, [this, reply]() { onFetchSingleCollectionFinished(reply); });
}
void ProductListModel::queueImageForDownload(const QString &url)
{
m_pendingImages.insert(url);
if (!m_isDownloadingImage)
fetchNextImage();
}
void ProductListModel::fetchNextImage()
{
if (m_pendingImages.isEmpty()) {
m_isDownloadingImage = false;
return;
}
const auto it = m_pendingImages.begin();
const QString nextUrl = *it;
m_pendingImages.erase(it);
if (QPixmapCache::find(nextUrl, nullptr)) { // this image is already cached
updateModelIndexesForUrl(nextUrl); // it might have been added while downloading
fetchNextImage();
return;
}
m_isDownloadingImage = true;
QNetworkReply *reply = Utils::NetworkAccessManager::instance()->get(QNetworkRequest(nextUrl));
connect(reply, &QNetworkReply::finished,
this, [this, reply]() { onImageDownloadFinished(reply); });
}
void ProductListModel::onImageDownloadFinished(QNetworkReply *reply)
{
QTC_ASSERT(reply, return);
Utils::ExecuteOnDestruction replyDeleter([reply]() { reply->deleteLater(); });
if (reply->error() == QNetworkReply::NoError) {
const QByteArray data = reply->readAll();
QPixmap pixmap;
if (pixmap.loadFromData(data)) {
const QString url = reply->request().url().toString();
QPixmapCache::insert(url, pixmap.scaled(ProductListModel::defaultImageSize,
Qt::KeepAspectRatio, Qt::SmoothTransformation));
updateModelIndexesForUrl(url);
}
} // handle error not needed - it's okay'ish to have no images as long as the rest works
fetchNextImage();
}
void ProductListModel::updateModelIndexesForUrl(const QString &url)
{
for (int row = 0, end = m_items.size(); row < end; ++row) {
if (m_items.at(row)->imageUrl == url)
emit dataChanged(index(row), index(row), {ItemImageRole, Qt::DisplayRole});
}
}
} // namespace Internal
} // namespace Marketplace
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