Implement viewing and responding to polls

src/pollhandler.h

@@ -0,0 +1,57 @@
+// SPDX-FileCopyrightText: 2022 Tobias Fella <fella@posteo.de>
+// SPDX-License-Identifier: LGPL-2.0-or-later
+
+#pragma once
+
+#include <QJsonObject>
+#include <QObject>
+#include <QPair>
+
+class NeoChatRoom;
+
+class PollHandler : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(NeoChatRoom *room READ room WRITE setRoom NOTIFY roomChanged)
+    Q_PROPERTY(QString pollStartEventId READ pollStartEventId WRITE setPollStartEventId NOTIFY pollStartEventIdChanged)
+    Q_PROPERTY(QJsonObject answers READ answers NOTIFY answersChanged)
+    Q_PROPERTY(QJsonObject counts READ counts NOTIFY answersChanged)
+    Q_PROPERTY(bool hasEnded READ hasEnded NOTIFY hasEndedChanged)
+    Q_PROPERTY(int answerCount READ answerCount NOTIFY answersChanged)
+
+public:
+    PollHandler(QObject *parent = nullptr);
+
+    NeoChatRoom *room() const;
+    void setRoom(NeoChatRoom *room);
+
+    QString pollStartEventId() const;
+    void setPollStartEventId(const QString &eventId);
+
+    bool hasEnded() const;
+    int answerCount() const;
+
+    void checkLoadRelations();
+
+    QJsonObject answers() const;
+    QJsonObject counts() const;
+    Q_INVOKABLE void sendPollAnswer(const QString &eventId, const QString &answerId);
+
+Q_SIGNALS:
+    void roomChanged();
+    void pollStartEventIdChanged();
+    void answersChanged();
+    void hasEndedChanged();
+
+private:
+    NeoChatRoom *m_room = nullptr;
+    QString m_pollStartEventId;
+
+    void handleAnswer(const QJsonObject &object, const QString &sender, QDateTime timestamp);
+    QMap<QString, QDateTime> m_answerTimestamps;
+    QJsonObject m_answers;
+    int m_maxVotes = 1;
+    bool m_hasEnded = false;
+    QDateTime m_endedTimestamp;
+};