| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
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| ** |
| ** This file is part of the Qt Network Auth module of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:BSD$ |
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| |
| #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::SystemLocaleShortDate); |
| 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 QPair<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(); |
| } |
| } |