/*
 * Squawk messenger. 
 * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "contact.h"
#include <QDebug>

Core::Contact::Contact(const QString& pJid, const QString& account, QObject* parent):
    RosterItem(pJid, account, parent),
    groups(),
    subscriptionState(Shared::SubscriptionState::unknown)
{
}

Core::Contact::~Contact()
{
}

QSet<QString> Core::Contact::getGroups() const
{
    return groups;
}

unsigned int Core::Contact::groupsCount() const
{
    return groups.size();
}

void Core::Contact::setGroups(const QSet<QString>& set)
{
    QSet<QString> toRemove = groups - set;
    QSet<QString> toAdd = set - groups;
    
    groups = set;
    
    for (QSet<QString>::iterator itr = toRemove.begin(), end = toRemove.end(); itr != end; ++itr) {
        emit groupRemoved(*itr);
    }
    
    for (QSet<QString>::iterator itr = toAdd.begin(), end = toAdd.end(); itr != end; ++itr) {
        emit groupAdded(*itr);
    }
}

Shared::SubscriptionState Core::Contact::getSubscriptionState() const
{
    return subscriptionState;
}

void Core::Contact::setSubscriptionState(Shared::SubscriptionState state)
{
    if (subscriptionState != state) {
        subscriptionState = state;
        emit subscriptionStateChanged(subscriptionState);
    }
}

void Core::Contact::handlePresence(const QXmppPresence& pres)
{
    switch (pres.vCardUpdateType()) {
        case QXmppPresence::VCardUpdateNone:            //this presence has nothing to do with photo
            break;
        case QXmppPresence::VCardUpdateNotReady:        //let's say the photo didn't change here
            break;
        case QXmppPresence::VCardUpdateNoPhoto: {       //there is no photo, need to drop if any
            Archive::AvatarInfo info;
            bool hasAvatar = readAvatarInfo(info);
            if (!hasAvatar || !info.autogenerated) {
                setAutoGeneratedAvatar();
            }
        }         
        break;
        case QXmppPresence::VCardUpdateValidPhoto:{     //there is a photo, need to load
            Archive::AvatarInfo info;
            bool hasAvatar = readAvatarInfo(info);
            if (hasAvatar) {
                if (info.autogenerated || info.hash != pres.photoHash()) {
                    emit requestVCard(jid);
                }
            } else {
                emit requestVCard(jid);
            }
            break;
        }      
    }
}