// SPDX-FileCopyrightText: 2023 Tobias Fella <tobias.fella@kde.org>
// SPDX-License-Identifier: LGPL-2.0-or-later

#include "notificationsmodel.h"

#include <Quotient/events/event.h>
#include <Quotient/uri.h>

#include "eventhandler.h"
#include "neochatroom.h"

using namespace Quotient;

NotificationsModel::NotificationsModel(QObject *parent)
    : QAbstractListModel(parent)
{
}

int NotificationsModel::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)
    return m_notifications.count();
}

QVariant NotificationsModel::data(const QModelIndex &index, int role) const
{
    auto row = index.row();
    if (row < 0 || row >= m_notifications.count()) {
        return {};
    }
    if (role == TextRole) {
        return m_notifications[row].text;
    }
    if (role == RoomIdRole) {
        return m_notifications[row].roomId;
    }
    if (role == AuthorName) {
        return m_notifications[row].authorName;
    }
    if (role == AuthorAvatar) {
        return m_notifications[row].authorAvatar;
    }
    if (role == RoomRole) {
        return QVariant::fromValue(m_connection->room(m_notifications[row].roomId));
    }
    if (role == EventIdRole) {
        return m_notifications[row].eventId;
    }
    if (role == RoomDisplayNameRole) {
        return m_notifications[row].roomDisplayName;
    }
    if (role == UriRole) {
        return Uri(m_notifications[row].roomId.toLatin1(), m_notifications[row].eventId.toLatin1()).toUrl();
    }
    return {};
}

QHash<int, QByteArray> NotificationsModel::roleNames() const
{
    return {
        {TextRole, "notificationText"},
        {RoomIdRole, "roomId"},
        {AuthorName, "authorName"},
        {AuthorAvatar, "authorAvatar"},
        {RoomRole, "room"},
        {EventIdRole, "eventId"},
        {RoomDisplayNameRole, "roomDisplayName"},
        {UriRole, "uri"},
    };
}

NeoChatConnection *NotificationsModel::connection() const
{
    return m_connection;
}

void NotificationsModel::setConnection(NeoChatConnection *connection)
{
    if (m_connection) {
        // disconnect things...
    }
    if (!connection) {
        return;
    }
    m_connection = connection;
    Q_EMIT connectionChanged();
    connect(connection, &Connection::syncDone, this, [this]() {
        loadData();
    });
    loadData();
}

void NotificationsModel::loadData()
{
    if (!m_connection) {
        return;
    }
    if (m_job || (!m_notifications.empty() && m_nextToken.isEmpty())) {
        return;
    }
    m_job = m_connection->callApi<GetNotificationsJob>(m_nextToken);
    Q_EMIT loadingChanged();
    connect(m_job, &BaseJob::finished, this, [this]() {
        m_nextToken = m_job->nextToken();
        Q_EMIT nextTokenChanged();
        for (const auto &notification : m_job->notifications()) {
            if (std::any_of(notification.actions.constBegin(), notification.actions.constEnd(), [](const QVariant &it) {
                    if (it.canConvert<QVariantMap>()) {
                        if (it.toMap()["set_tweak"_L1] == "highlight"_L1) {
                            return true;
                        }
                    }
                    return false;
                })) {
                const auto &authorId = notification.event->fullJson()["sender"_L1].toString();
                const auto &room = m_connection->room(notification.roomId);
                if (!room) {
                    continue;
                }
                auto u = room->member(authorId).avatarUrl();
                auto avatar = u.isEmpty() ? QUrl() : connection()->makeMediaUrl(u);
                const auto &authorAvatar = avatar.isValid() && avatar.scheme() == u"mxc"_s ? avatar : QUrl();

                const auto &roomEvent = eventCast<const RoomEvent>(notification.event.get());
                if (!roomEvent) {
                    continue;
                }

                beginInsertRows({}, m_notifications.length(), m_notifications.length());
                m_notifications += Notification{
                    .roomId = notification.roomId,
                    .text = room->member(authorId).htmlSafeDisplayName() + (roomEvent->is<StateEvent>() ? u" "_s : u": "_s)
                        + EventHandler::plainBody(dynamic_cast<NeoChatRoom *>(room), roomEvent, true),
                    .authorName = room->member(authorId).htmlSafeDisplayName(),
                    .authorAvatar = authorAvatar,
                    .eventId = roomEvent->id(),
                    .roomDisplayName = room->displayName(),
                };
                endInsertRows();
            }
        }
        m_job = nullptr;
        Q_EMIT loadingChanged();
    });
}

bool NotificationsModel::canFetchMore(const QModelIndex &parent) const
{
    Q_UNUSED(parent);
    return !m_nextToken.isEmpty();
}

void NotificationsModel::fetchMore(const QModelIndex &parent)
{
    Q_UNUSED(parent);
    loadData();
}

bool NotificationsModel::loading() const
{
    return m_job;
}

QString NotificationsModel::nextToken() const
{
    return m_nextToken;
}

#include "moc_notificationsmodel.cpp"
