// SPDX-License-Identifier: LGPL-3.0-or-later

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright (C) 2013 - 2024, nymea GmbH
* Copyright (C) 2024 - 2025, chargebyte austria GmbH
*
* This file is part of libnymea-app.
*
* libnymea-app is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* libnymea-app is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libnymea-app. If not, see <https://www.gnu.org/licenses/>.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include "mqttpolicies.h"
#include "mqttpolicy.h"

MqttPolicies::MqttPolicies(QObject *parent) : QAbstractListModel(parent)
{

}

int MqttPolicies::rowCount(const QModelIndex &index) const
{
    Q_UNUSED(index)
    return static_cast<int>(m_list.count());
}

QVariant MqttPolicies::data(const QModelIndex &index, int role) const
{
    switch (role) {
    case RoleClientId:
        return m_list.at(index.row())->clientId();
    case RoleUsername:
        return m_list.at(index.row())->username();
    case RolePassword:
        return m_list.at(index.row())->password();
    case RoleAllowedPublishTopicFilters:
        return m_list.at(index.row())->allowedPublishTopicFilters();
    case RoleAllowedSubscribeTopicFilters:
        return m_list.at(index.row())->allowedSubscribeTopicFilters();
    }
    return QVariant();
}

QHash<int, QByteArray> MqttPolicies::roleNames() const
{
    QHash<int, QByteArray> roles;
    roles.insert(RoleClientId, "clientId");
    roles.insert(RoleUsername, "username");
    roles.insert(RolePassword, "password");
    roles.insert(RoleAllowedPublishTopicFilters, "allowedPublishTopicFilters");
    roles.insert(RoleAllowedSubscribeTopicFilters, "allowedSubscribeTopicFilters");
    return roles;
}

void MqttPolicies::addPolicy(MqttPolicy *policy)
{
    policy->setParent(this);
    beginInsertRows(QModelIndex(), static_cast<int>(m_list.count()), static_cast<int>(m_list.count()));
    m_list.append(policy);

    connect(policy, &MqttPolicy::clientIdChanged, this, [this, policy]() {
        QModelIndex index = this->index(static_cast<int>(m_list.indexOf(policy)));
        emit dataChanged(index, index, {RoleClientId});
    });
    connect(policy, &MqttPolicy::usernameChanged, this, [this, policy]() {
        QModelIndex index = this->index(static_cast<int>(m_list.indexOf(policy)));
        emit dataChanged(index, index, {RoleUsername});
    });
    connect(policy, &MqttPolicy::passwordChanged, this, [this, policy]() {
        QModelIndex index = this->index(static_cast<int>(m_list.indexOf(policy)));
        emit dataChanged(index, index, {RolePassword});
    });
    connect(policy, &MqttPolicy::allowedPublishTopicFiltersChanged, this, [this, policy]() {
        QModelIndex index = this->index(static_cast<int>(m_list.indexOf(policy)));
        emit dataChanged(index, index, {RoleAllowedPublishTopicFilters});
    });
    connect(policy, &MqttPolicy::allowedSubscribeTopicFiltersChanged, this, [this, policy]() {
        QModelIndex index = this->index(static_cast<int>(m_list.indexOf(policy)));
        emit dataChanged(index, index, {RoleAllowedSubscribeTopicFilters});
    });

    endInsertRows();
    emit countChanged();
}

void MqttPolicies::removePolicy(MqttPolicy *policy)
{
    int idx = static_cast<int>(m_list.indexOf(policy));
    if (idx < 0) {
        return;
    }
    beginRemoveRows(QModelIndex(), idx, idx);
    m_list.takeAt(idx)->deleteLater();
    endRemoveRows();
}

MqttPolicy *MqttPolicies::getPolicy(const QString &clientId) const
{
    foreach (MqttPolicy* policy, m_list) {
        if (policy->clientId() == clientId) {
            return policy;
        }
    }
    return nullptr;
}

MqttPolicy *MqttPolicies::get(int index) const
{
    if (index < 0 || index >= m_list.count()){
        return nullptr;
    }
    return m_list.at(index);
}

void MqttPolicies::clear()
{
    beginResetModel();
    foreach (MqttPolicy* policy, m_list)
        policy->deleteLater();

    m_list.clear();
    endResetModel();
}