File indexing completed on 2024-05-12 17:08:53

 /*
     SPDX-FileCopyrightText: 2013 Mark Gaiser <markg85@gmail.com>
     SPDX-FileCopyrightText: 2016 Martin Klapetek <mklapetek@kde.org>
     SPDX-FileCopyrightText: 2021 Carl Schwan <carlschwan@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "daysmodel.h"
 #include "eventdatadecorator.h"
 
 #include <QByteArray>
 #include <QDebug>
 #include <QDir>
 #include <QMetaObject>
 
 constexpr int maxEventDisplayed = 5;
 
 class DaysModelPrivate
 {
 public:
     explicit DaysModelPrivate();
 
     QList<DayData> *data = nullptr;
     QList<QObject *> qmlData;
     QMultiHash<QDate, CalendarEvents::EventData> eventsData;
     QHash<QDate /* Gregorian */, QDate> alternateDatesData;
     QHash<QDate, CalendarEvents::CalendarEventsPlugin::SubLabel> subLabelsData;
 
     QDate lastRequestedAgendaDate;
     bool agendaNeedsUpdate = false;
 
     // QML Ownership
     EventPluginsManager *pluginsManager = nullptr;
 };
 
 DaysModelPrivate::DaysModelPrivate()
 {
 }
 
 DaysModel::DaysModel(QObject *parent)
     : QAbstractItemModel(parent)
     , d(new DaysModelPrivate)
 {
 }
 
 DaysModel::~DaysModel()
 {
     delete d;
 }
 
 void DaysModel::setSourceData(QList<DayData> *data)
 {
     if (d->data != data) {
         beginResetModel();
         d->data = data;
         endResetModel();
     }
 }
 
 int DaysModel::rowCount(const QModelIndex &parent) const
 {
     if (!parent.isValid()) {
         // day count
         if (d->data->size() <= 0) {
             return 0;
         } else {
             return d->data->size();
         }
     } else {
         // event count
         const auto &eventDatas = data(parent, Roles::Events).value<QList<CalendarEvents::EventData>>();
         Q_ASSERT(eventDatas.count() <= maxEventDisplayed);
         return eventDatas.count();
     }
 }
 
 int DaysModel::columnCount(const QModelIndex &parent) const
 {
     Q_UNUSED(parent)
     return 1;
 }
 
 QVariant DaysModel::data(const QModelIndex &index, int role) const
 {
     if (!index.isValid()) {
         return {};
     }
 
     const int row = index.row();
 
     if (!index.parent().isValid()) {
         // Fetch days in month
         const DayData &currentData = d->data->at(row);
         const QDate currentDate(currentData.yearNumber, currentData.monthNumber, currentData.dayNumber);
 
         switch (role) {
         case isCurrent:
             return currentData.isCurrent;
         case containsEventItems:
             return d->eventsData.contains(currentDate);
         case Events:
             return QVariant::fromValue(d->eventsData.values(currentDate));
         case EventCount:
             return d->eventsData.values(currentDate).count();
         case containsMajorEventItems:
             return hasMajorEventAtDate(currentDate);
         case containsMinorEventItems:
             return hasMinorEventAtDate(currentDate);
         case dayNumber:
             return currentData.dayNumber;
         case monthNumber:
             return currentData.monthNumber;
         case yearNumber:
             return currentData.yearNumber;
         default:
             break;
         }
 
         if (d->alternateDatesData.count(currentDate)) {
             switch (role) {
             case AlternateYearNumber:
                 return d->alternateDatesData.value(currentDate).year();
             case AlternateMonthNumber:
                 return d->alternateDatesData.value(currentDate).month();
             case AlternateDayNumber:
                 return d->alternateDatesData.value(currentDate).day();
             default:
                 break;
             }
         }
 
         if (d->subLabelsData.count(currentDate)) {
             switch (role) {
             case SubLabel:
                 return d->subLabelsData.value(currentDate).label;
             case SubYearLabel:
                 return d->subLabelsData.value(currentDate).yearLabel;
             case SubMonthLabel:
                 return d->subLabelsData.value(currentDate).monthLabel;
             case SubDayLabel:
                 return d->subLabelsData.value(currentDate).dayLabel;
             default:
                 break;
             }
         }
     } else {
         // Fetch event in day
         const auto &eventDatas = data(index.parent(), Roles::Events).value<QList<CalendarEvents::EventData>>();
         if (eventDatas.count() < row) {
             return {};
         }
 
         const auto &eventData = eventDatas[row];
         switch (role) {
         case EventColor:
             return eventData.eventColor();
         }
     }
     return {};
 }
 
 void DaysModel::update()
 {
     if (d->data->size() <= 0) {
         return;
     }
 
     // We need to reset the model since m_data has already been changed here
     // and we can't remove the events manually with beginRemoveRows() since
     // we don't know where the old events were located.
     beginResetModel();
     d->eventsData.clear();
     d->alternateDatesData.clear();
     d->subLabelsData.clear();
     endResetModel();
 
     if (d->pluginsManager) {
         const QDate modelFirstDay(d->data->at(0).yearNumber, d->data->at(0).monthNumber, d->data->at(0).dayNumber);
         const auto plugins = d->pluginsManager->plugins();
         for (CalendarEvents::CalendarEventsPlugin *eventsPlugin : plugins) {
             eventsPlugin->loadEventsForDateRange(modelFirstDay, modelFirstDay.addDays(42));
         }
     }
 
     // We always have 42 items (or weeks * num of days in week) so we only have to tell the view that the data changed.
     Q_EMIT dataChanged(index(0, 0), index(d->data->count() - 1, 0));
 }
 
 void DaysModel::onDataReady(const QMultiHash<QDate, CalendarEvents::EventData> &data)
 {
     d->eventsData.reserve(d->eventsData.size() + data.size());
     for (int i = 0; i < d->data->count(); i++) {
         const DayData &currentData = d->data->at(i);
         const QDate currentDate(currentData.yearNumber, currentData.monthNumber, currentData.dayNumber);
         if (!data.values(currentDate).isEmpty()) {
             // Make sure we don't display more than maxEventDisplayed events.
             const int currentCount = d->eventsData.values(currentDate).count();
             if (currentCount >= maxEventDisplayed) {
                 break;
             }
 
             const int addedEventCount = std::min<int>(currentCount + data.values(currentDate).count(), maxEventDisplayed) - currentCount;
 
             // Add event
             beginInsertRows(index(i, 0), 0, addedEventCount - 1);
             int stopCounter = currentCount;
             for (const auto &dataDay : data.values(currentDate)) {
                 if (stopCounter >= maxEventDisplayed) {
                     break;
                 }
                 stopCounter++;
                 d->eventsData.insert(currentDate, dataDay);
             }
             endInsertRows();
         }
     }
 
     if (data.contains(QDate::currentDate())) {
         d->agendaNeedsUpdate = true;
     }
 
     // only the containsEventItems roles may have changed
     Q_EMIT dataChanged(index(0, 0), index(d->data->count() - 1, 0), {containsEventItems, containsMajorEventItems, containsMinorEventItems, Events, EventCount});
 
     Q_EMIT agendaUpdated(QDate::currentDate());
 }
 
 void DaysModel::onEventModified(const CalendarEvents::EventData &data)
 {
     QList<QDate> updatesList;
     auto i = d->eventsData.begin();
     while (i != d->eventsData.end()) {
         if (i->uid() == data.uid()) {
             *i = data;
             updatesList << i.key();
         }
 
         ++i;
     }
 
     if (!updatesList.isEmpty()) {
         d->agendaNeedsUpdate = true;
     }
 
     for (const QDate date : std::as_const(updatesList)) {
         const QModelIndex changedIndex = indexForDate(date);
         if (changedIndex.isValid()) {
             Q_EMIT dataChanged(changedIndex, changedIndex, {containsEventItems, containsMajorEventItems, containsMinorEventItems, EventColor});
         }
         Q_EMIT agendaUpdated(date);
     }
 }
 
 void DaysModel::onEventRemoved(const QString &uid)
 {
     // HACK We should update the model with beginRemoveRows instead of
     // using beginResetModel() since this creates a small visual glitches
     // if an event is removed in Korganizer and the calendar is open.
     // Using beginRemoveRows instead we make the code a lot more complex
     // and if not done correctly will introduce bugs.
     beginResetModel();
     QList<QDate> updatesList;
     auto i = d->eventsData.begin();
     while (i != d->eventsData.end()) {
         if (i->uid() == uid) {
             updatesList << i.key();
             i = d->eventsData.erase(i);
         } else {
             ++i;
         }
     }
 
     if (!updatesList.isEmpty()) {
         d->agendaNeedsUpdate = true;
     }
 
     for (const QDate date : std::as_const(updatesList)) {
         const QModelIndex changedIndex = indexForDate(date);
         if (changedIndex.isValid()) {
             Q_EMIT dataChanged(changedIndex, changedIndex, {containsEventItems, containsMajorEventItems, containsMinorEventItems});
         }
 
         Q_EMIT agendaUpdated(date);
     }
     endResetModel();
 }
 
 void DaysModel::onAlternateDateReady(const QHash<QDate, QDate> &data)
 {
     d->alternateDatesData.reserve(d->alternateDatesData.size() + data.size());
     for (int i = 0; i < d->data->count(); i++) {
         const DayData &currentData = d->data->at(i);
         const QDate currentDate(currentData.yearNumber, currentData.monthNumber, currentData.dayNumber);
         if (!data.contains(currentDate)) {
             continue;
         }
         // Add an alternate date
         d->alternateDatesData.insert(currentDate, data.value(currentDate));
     }
 
     Q_EMIT dataChanged(index(0, 0), index(d->data->count() - 1, 0), {AlternateYearNumber, AlternateMonthNumber, AlternateDayNumber});
 }
 
 void DaysModel::onSubLabelReady(const QHash<QDate, CalendarEvents::CalendarEventsPlugin::SubLabel> &data)
 {
     d->subLabelsData.reserve(d->subLabelsData.size() + data.size());
     for (int i = 0; i < d->data->count(); i++) {
         const DayData &currentData = d->data->at(i);
         const QDate currentDate(currentData.yearNumber, currentData.monthNumber, currentData.dayNumber);
         if (!data.contains(currentDate)) {
             continue;
         }
         // Add/Overwrite a sub-label based on priority
         if (const auto &value = data.value(currentDate);
             !d->subLabelsData.count(currentDate) || (d->subLabelsData.count(currentDate) && value.priority > d->subLabelsData.value(currentDate).priority)) {
             d->subLabelsData.insert(currentDate, value);
         }
     }
 
     Q_EMIT dataChanged(index(0, 0), index(d->data->count() - 1, 0), {SubLabel, SubYearLabel, SubMonthLabel, SubDayLabel});
 }
 
 QList<QObject *> DaysModel::eventsForDate(const QDate &date)
 {
     if (d->lastRequestedAgendaDate == date && !d->agendaNeedsUpdate) {
         return d->qmlData;
     }
 
     d->lastRequestedAgendaDate = date;
     qDeleteAll(d->qmlData);
     d->qmlData.clear();
 
     QList<CalendarEvents::EventData> events = d->eventsData.values(date);
     d->qmlData.reserve(events.size());
 
     // sort events by their time and type
     std::sort(events.begin(), events.end(), [](const CalendarEvents::EventData &a, const CalendarEvents::EventData &b) {
         return b.type() > a.type() || b.startDateTime() > a.startDateTime();
     });
 
     for (const CalendarEvents::EventData &event : std::as_const(events)) {
         d->qmlData << new EventDataDecorator(event, this);
     }
 
     d->agendaNeedsUpdate = false;
     return d->qmlData;
 }
 
 QModelIndex DaysModel::indexForDate(const QDate &date)
 {
     if (!d->data) {
         return QModelIndex();
     }
 
     const DayData &firstDay = d->data->at(0);
     const QDate firstDate(firstDay.yearNumber, firstDay.monthNumber, firstDay.dayNumber);
 
     qint64 daysTo = firstDate.daysTo(date);
 
     return createIndex(daysTo, 0);
 }
 
 bool DaysModel::hasMajorEventAtDate(const QDate &date) const
 {
     auto it = d->eventsData.find(date);
     while (it != d->eventsData.end() && it.key() == date) {
         if (!it.value().isMinor()) {
             return true;
         }
         ++it;
     }
     return false;
 }
 
 bool DaysModel::hasMinorEventAtDate(const QDate &date) const
 {
     auto it = d->eventsData.find(date);
     while (it != d->eventsData.end() && it.key() == date) {
         if (it.value().isMinor()) {
             return true;
         }
         ++it;
     }
     return false;
 }
 
 void DaysModel::setPluginsManager(QObject *manager)
 {
     if (d->pluginsManager) {
         disconnect(d->pluginsManager, nullptr, this, nullptr);
     }
 
     EventPluginsManager *m = qobject_cast<EventPluginsManager *>(manager);
 
     if (!m) {
         return;
     }
 
     d->pluginsManager = m;
 
     connect(d->pluginsManager, &EventPluginsManager::dataReady, this, &DaysModel::onDataReady);
     connect(d->pluginsManager, &EventPluginsManager::eventModified, this, &DaysModel::onEventModified);
     connect(d->pluginsManager, &EventPluginsManager::eventRemoved, this, &DaysModel::onEventRemoved);
     connect(d->pluginsManager, &EventPluginsManager::alternateDateReady, this, &DaysModel::onAlternateDateReady);
     connect(d->pluginsManager, &EventPluginsManager::subLabelReady, this, &DaysModel::onSubLabelReady);
     connect(d->pluginsManager, &EventPluginsManager::pluginsChanged, this, &DaysModel::update);
 
     QMetaObject::invokeMethod(this, "update", Qt::QueuedConnection);
 }
 
 QHash<int, QByteArray> DaysModel::roleNames() const
 {
     return {
         {isCurrent, "isCurrent"},
         {containsEventItems, "containsEventItems"},
         {containsMajorEventItems, "containsMajorEventItems"},
         {containsMinorEventItems, "containsMinorEventItems"},
         {dayNumber, "dayNumber"},
         {monthNumber, "monthNumber"},
         {yearNumber, "yearNumber"},
         {EventColor, "eventColor"},
         {EventCount, "eventCount"},
         {Events, "events"},
         {AlternateYearNumber, "alternateYearNumber"},
         {AlternateMonthNumber, "alternateMonthNumber"},
         {AlternateDayNumber, "alternateDayNumber"},
         {SubLabel, "subLabel"},
         {SubYearLabel, "subYearLabel"},
         {SubMonthLabel, "subMonthLabel"},
         {SubDayLabel, "subDayLabel"},
     };
 }
 
 QModelIndex DaysModel::index(int row, int column, const QModelIndex &parent) const
 {
     if (parent.isValid()) {
         return createIndex(row, column, (intptr_t)parent.row());
     }
     return createIndex(row, column, nullptr);
 }
 
 QModelIndex DaysModel::parent(const QModelIndex &child) const
 {
     if (child.internalId()) {
         return createIndex(child.internalId(), 0, nullptr);
     }
     return QModelIndex();
 }
 
 Q_DECLARE_METATYPE(CalendarEvents::EventData)