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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "twittertimelinemodel.h"
#include <QtGui>
#include <QtCore>
#include <QtWidgets>
TwitterTimelineModel::TwitterTimelineModel(QObject *parent) : QAbstractTableModel(parent)
{
connect(&twitter, &Twitter::authenticated, this, &TwitterTimelineModel::authenticated);
connect(&twitter, &Twitter::authenticated, this, &TwitterTimelineModel::updateTimeline);
}
int TwitterTimelineModel::rowCount(const QModelIndex &parent) const
{
#if defined(QT_DEBUG)
Q_ASSERT(!parent.isValid());
#else
Q_UNUSED(parent);
#endif
return tweets.size();
}
QVariant TwitterTimelineModel::data(const QModelIndex &index, int role) const
{
if (role != Qt::DisplayRole)
return QVariant();
auto it = tweets.begin();
std::advance(it, index.row());
switch (index.column())
{
case 0:
return QString::number(it->id);
case 1:
return it->createdAt.toString(Qt::ISODateWithMs);
case 2:
return it->user;
case 3:
return it->text;
}
return QVariant();
}
int TwitterTimelineModel::columnCount(const QModelIndex &) const
{
return 4;
}
QVariant TwitterTimelineModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole)
return QVariant();
if (orientation == Qt::Horizontal) {
switch (section) {
case 0:
return QStringLiteral("Id");
case 1:
return QStringLiteral("Created at");
case 2:
return QStringLiteral("User");
case 3:
return QStringLiteral("Text");
}
}
return section;
}
void TwitterTimelineModel::authenticate(const std::pair<QString, QString> &clientCredentials)
{
twitter.setClientCredentials(clientCredentials);
twitter.grant();
}
QAbstractOAuth::Status TwitterTimelineModel::status() const
{
return twitter.status();
}
void TwitterTimelineModel::updateTimeline()
{
if (twitter.status() != Twitter::Status::Granted)
QMessageBox::warning(nullptr, qApp->applicationName(), "Not authenticated");
QUrl url("https://api.twitter.com/1.1/statuses/home_timeline.json");
QVariantMap parameters;
if (tweets.size()) {
// Tweets are time-ordered, newest first. Pass the most recent
// ID we have to request everything more recent than it:
parameters.insert("since_id", QString::number(tweets.first().id));
// From https://dev.twitter.com/rest/reference/get/search/tweets:
// Returns results with an ID greater than (that is, more recent than)
// the specified ID. There are limits to the number of Tweets which can
// be accessed through the API. If the limit of Tweets has occurred
// since the since_id, the since_id will be forced to the oldest ID
// available.
}
QNetworkReply *reply = twitter.get(url, parameters);
connect(reply, &QNetworkReply::finished, this, &TwitterTimelineModel::parseJson);
}
void TwitterTimelineModel::parseJson()
{
QJsonParseError parseError;
auto reply = qobject_cast<QNetworkReply*>(sender());
Q_ASSERT(reply);
const auto data = reply->readAll();
const auto document = QJsonDocument::fromJson(data, &parseError);
if (parseError.error) {
qCritical() << "TwitterTimelineModel::parseJson. Error at:" << parseError.offset
<< parseError.errorString();
return;
} else if (document.isObject()) {
// Error received :(
const auto object = document.object();
const auto errorArray = object.value("errors").toArray();
Q_ASSERT_X(errorArray.size(), "parse", data);
QStringList errors;
for (const auto error : errorArray) {
Q_ASSERT(error.isObject());
Q_ASSERT(error.toObject().contains("message"));
errors.append(error.toObject().value("message").toString());
}
QMessageBox::warning(nullptr, qApp->applicationName(), errors.join("<br />"));
return;
}
Q_ASSERT_X(document.isArray(), "parse", data);
const auto array = document.array();
if (array.size()) {
beginInsertRows(QModelIndex(), 0, array.size() - 1);
auto before = tweets.begin();
for (const auto &value : array) {
Q_ASSERT(value.isObject());
const auto object = value.toObject();
const auto createdAt = QDateTime::fromString(object.value("created_at").toString(),
"ddd MMM dd HH:mm:ss +0000 yyyy");
before = tweets.insert(before, Tweet{
object.value("id").toVariant().toULongLong(),
createdAt,
object.value("user").toObject().value("name").toString(),
object.value("text").toString()
});
std::advance(before, 1);
}
endInsertRows();
}
}
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