core/account.cpp

@@ -1,6 +1,7 @@
 #include "account.h"
 #include <qxmpp/QXmppMessage.h>
 #include <QDateTime>
+#include <QTimer>
 
 using namespace Core;
 
@@ -25,6 +26,7 @@ Account::Account(const QString& p_login, const QString& p_server, const QString&
     QObject::connect(&client, SIGNAL(disconnected()), this, SLOT(onClientDisconnected()));
     QObject::connect(&client, SIGNAL(presenceReceived(const QXmppPresence&)), this, SLOT(onPresenceReceived(const QXmppPresence&)));
     QObject::connect(&client, SIGNAL(messageReceived(const QXmppMessage&)), this, SLOT(onMessageReceived(const QXmppMessage&)));
+    QObject::connect(&client, SIGNAL(error(QXmppClient::Error)), this, SLOT(onClientError(QXmppClient::Error)));
     
     QXmppRosterManager& rm = client.rosterManager();
     
@@ -212,6 +214,8 @@ void Core::Account::addedAccount(const QString& jid)
         QObject::connect(contact, SIGNAL(nameChanged(const QString&)), this, SLOT(onContactNameChanged(const QString&)));
         QObject::connect(contact, SIGNAL(subscriptionStateChanged(Shared::SubscriptionState)), 
                          this, SLOT(onContactSubscriptionStateChanged(Shared::SubscriptionState)));
+        QObject::connect(contact, SIGNAL(needHistory(const QString&, const QString&)), this, SLOT(onContactNeedHistory(const QString&, const QString&)));
+        QObject::connect(contact, SIGNAL(historyResponse(const std::list<Shared::Message>&)), this, SLOT(onContactHistoryResponse(const std::list<Shared::Message>&)));
     }
 }
 
@@ -368,6 +372,10 @@ void Core::Account::sendMessage(const Shared::Message& data)
         QXmppMessage msg(data.getFrom(), data.getTo(), data.getBody(), data.getThread());
         msg.setId(data.getId());
         msg.setType(static_cast<QXmppMessage::Type>(data.getType()));       //it is safe here, my type is compatible
+        
+        std::map<QString, Contact*>::const_iterator itr = contacts.find(data.getPenPalJid());
+        itr->second->appendMessageToArchive(data);
+        
         client.sendPacket(msg);
     } else {
         qDebug() << "An attempt to send message with not connected account " << name << ", skipping";
@@ -386,27 +394,14 @@ void Core::Account::onCarbonMessageSent(const QXmppMessage& msg)
 
 bool Core::Account::handleChatMessage(const QXmppMessage& msg, bool outgoing, bool forwarded, bool guessing)
 {
-    QString body(msg.body());
+    const QString& body(msg.body());
     if (body.size() != 0) {
-        QString id(msg.id());
+        const QString& id(msg.id());
-        QDateTime time(msg.stamp());
         Shared::Message sMsg(Shared::Message::chat);
-        sMsg.setId(id);
+        initializeMessage(sMsg, msg, outgoing, forwarded, guessing);
-        sMsg.setFrom(msg.from());
+        std::map<QString, Contact*>::const_iterator itr = contacts.find(sMsg.getPenPalJid());
-        sMsg.setTo(msg.to());
+        itr->second->appendMessageToArchive(sMsg);
-        sMsg.setBody(body);
+        
-        sMsg.setForwarded(forwarded);
-        if (guessing) {
-            if (sMsg.getFromJid() == getLogin() + "@" + getServer()) {
-                outgoing = true;
-            } else {
-                outgoing = false;
-            }
-        }
-        sMsg.setOutgoing(outgoing);
-        if (time.isValid()) {
-            sMsg.setTime(time);
-        }
         emit message(sMsg);
         
         if (!forwarded && !outgoing) {
@@ -422,32 +417,108 @@ bool Core::Account::handleChatMessage(const QXmppMessage& msg, bool outgoing, bo
     return false;
 }
 
-void Core::Account::onMamMessageReceived(const QString& bareJid, const QXmppMessage& msg)
+void Core::Account::initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing, bool forwarded, bool guessing) const
 {
-    handleChatMessage(msg, false, true, true);
+    const QDateTime& time(source.stamp());
+    target.setId(source.id());
+    target.setFrom(source.from());
+    target.setTo(source.to());
+    target.setBody(source.body());
+    target.setForwarded(forwarded);
+    if (guessing) {
+        if (target.getFromJid() == getLogin() + "@" + getServer()) {
+            outgoing = true;
+        } else {
+            outgoing = false;
+        }
+    }
+    target.setOutgoing(outgoing);
+    if (time.isValid()) {
+        target.setTime(time);
+    } else {
+        target.setCurrentTime();
+    }
 }
 
-void Core::Account::requestAchive(const QString& jid)
+void Core::Account::onMamMessageReceived(const QString& queryId, const QXmppMessage& msg)
 {
+    std::map<QString, QString>::const_iterator itr = achiveQueries.find(queryId);
+    QString jid = itr->second;
+    std::map<QString, Contact*>::const_iterator citr = contacts.find(jid);
+    
+    if (citr != contacts.end()) {
+        Contact* cnt = citr->second;
+        if (msg.id().size() > 0 && msg.body().size() > 0) {
+            Shared::Message sMsg(Shared::Message::chat);
+            initializeMessage(sMsg, msg, false, true, true);
+            
+            cnt->addMessageToArchive(sMsg);
+        }
+        
+    }
+    //handleChatMessage(msg, false, true, true);
+}
+
+void Core::Account::requestArchive(const QString& jid, int count, const QString& before)
+{
+    qDebug() << "An archive request for " << jid << ", before " << before;
+    std::map<QString, Contact*>::const_iterator itr = contacts.find(jid);
+    if (itr == contacts.end()) {
+        qDebug() << "An attempt to request archive for" << jid << "in account" << name << ", but the contact with such id wasn't found, skipping";
+        return;
+    }
+    Contact* contact = itr->second;
+    
+    if (contact->getArchiveState() == Contact::empty && before.size() == 0) {
+        QXmppMessage msg(getFullJid(), jid, "", "");
+        QString last = Shared::generateUUID();
+        msg.setId(last);
+        msg.setType(QXmppMessage::Chat);
+        msg.setState(QXmppMessage::Active);
+        client.sendPacket(msg);
+        QTimer* timer = new QTimer;
+        QObject::connect(timer, &QTimer::timeout, [timer, contact, count, last](){
+            contact->requestFromEmpty(count, last);
+            timer->deleteLater();
+        });
+        
+        timer->setSingleShot(true);
+        timer->start(1000);
+    } else {
+        contact->requestHistory(count, before);
+    }
+}
+
+void Core::Account::onContactNeedHistory(const QString& before, const QString& after)
+{
+    Contact* contact = static_cast<Contact*>(sender());
     QXmppResultSetQuery query;
     query.setMax(100);
-    QDateTime from = QDateTime::currentDateTime().addDays(-7);
+    if (before.size() > 0) {
-
+        query.setBefore(before);
-    QString q = am->retrieveArchivedMessages("", "", jid, from, QDateTime(), query);
+    }
-    achiveQueries.insert(std::make_pair(q, jid));
+    if (after.size() > 0) {
+        query.setAfter(after);
+    }
+    
+    qDebug() << "Remote query from\"" << after << "\", to" << before;
+    
+    QString q = am->retrieveArchivedMessages("", "", contact->jid, QDateTime(), QDateTime(), query);
+    achiveQueries.insert(std::make_pair(q, contact->jid));
 }
 
+
 void Core::Account::onMamResultsReceived(const QString& queryId, const QXmppResultSetReply& resultSetReply, bool complete)
 {
     std::map<QString, QString>::const_iterator itr = achiveQueries.find(queryId);
     QString jid = itr->second;
     achiveQueries.erase(itr);
-    if (!complete) {
+    std::map<QString, Contact*>::const_iterator citr = contacts.find(jid);
-        QXmppResultSetQuery q;
+    if (citr != contacts.end()) {
-        q.setAfter(resultSetReply.last());
+        Contact* cnt = citr->second;
-        q.setMax(100);
+        
-        QString nQ = am->retrieveArchivedMessages("", "", jid, QDateTime::currentDateTime().addDays(-7), QDateTime(), q);
+        qDebug() << "Flushing messages for" << jid;
-        achiveQueries.insert(std::make_pair(nQ, jid));
+        cnt->flushMessagesToArchive(complete, resultSetReply.first(), resultSetReply.last());
     }
 }
 
@@ -534,3 +605,29 @@ Shared::SubscriptionState Core::Account::castSubscriptionState(QXmppRosterIq::It
     }
     return state;
 }
+
+void Core::Account::onContactHistoryResponse(const std::list<Shared::Message>& list)
+{
+    Contact* contact = static_cast<Contact*>(sender());
+    
+    qDebug() << "Collected history for contact " << contact->jid << list.size() << "elements";
+    emit responseArchive(contact->jid, list);
+}
+
+void Core::Account::onClientError(QXmppClient::Error err)
+{
+    switch (err) {
+        case QXmppClient::SocketError:
+            qDebug() << "Client socket error" << client.socketErrorString();
+            break;
+        case QXmppClient::XmppStreamError:
+            qDebug() << "Client stream error" << client.socketErrorString();
+            break;
+        case QXmppClient::KeepAliveError:
+            qDebug() << "Client keep alive error";
+            break;
+    }
+    
+    //onClientDisconnected();
+}
+

core/account.h

@@ -41,7 +41,7 @@ public:
     void setAvailability(Shared::Availability avail);
     QString getFullJid() const;
     void sendMessage(const Shared::Message& data);
-    void requestAchive(const QString& jid);
+    void requestArchive(const QString& jid, int count, const QString& before);
     
 signals:
     void connectionStateChanged(int);
@@ -55,6 +55,7 @@ signals:
     void addPresence(const QString& jid, const QString& name, const QMap<QString, QVariant>& data);
     void removePresence(const QString& jid, const QString& name);
     void message(const Shared::Message& data);
+    void responseArchive(const QString& jid, const std::list<Shared::Message>& list);
     
 private:
     QString name;
@@ -71,6 +72,7 @@ private:
 private slots:
     void onClientConnected();
     void onClientDisconnected();
+    void onClientError(QXmppClient::Error err);
     
     void onRosterReceived();
     void onRosterItemAdded(const QString& bareJid);
@@ -91,12 +93,15 @@ private slots:
     void onContactGroupRemoved(const QString& group);
     void onContactNameChanged(const QString& name);
     void onContactSubscriptionStateChanged(Shared::SubscriptionState state);
+    void onContactHistoryResponse(const std::list<Shared::Message>& list);
+    void onContactNeedHistory(const QString& before, const QString& after);
   
 private:
     void addedAccount(const QString &bareJid);
     bool handleChatMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
     void addToGroup(const QString& jid, const QString& group);
     void removeFromGroup(const QString& jid, const QString& group);
+    void initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing = false, bool forwarded = false, bool guessing = false) const;
     Shared::SubscriptionState castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs) const;
 };
 

core/archive.cpp

@@ -28,6 +28,7 @@ Core::Archive::Archive(const QString& p_jid, QObject* parent):
     QObject(parent),
     jid(p_jid),
     opened(false),
+    fromTheBeginning(false),
     environment(),
     main(),
     order()
@@ -54,14 +55,16 @@ void Core::Archive::open(const QString& account)
             }
         }
         
-        mdb_env_set_maxdbs(environment, 2);
+        mdb_env_set_maxdbs(environment, 3);
         mdb_env_open(environment, path.toStdString().c_str(), 0, 0664);
         
         MDB_txn *txn;
         mdb_txn_begin(environment, NULL, 0, &txn);
         mdb_dbi_open(txn, "main", MDB_CREATE, &main);
         mdb_dbi_open(txn, "order", MDB_CREATE | MDB_INTEGERKEY, &order);
+        mdb_dbi_open(txn, "order", MDB_CREATE, &stats);
         mdb_txn_commit(txn);
+        fromTheBeginning = _isFromTheBeginning();
         opened = true;
     }
 }
@@ -69,6 +72,7 @@ void Core::Archive::open(const QString& account)
 void Core::Archive::close()
 {
     if (opened) {
+        mdb_dbi_close(environment, stats);
         mdb_dbi_close(environment, order);
         mdb_dbi_close(environment, main);
         mdb_env_close(environment);
@@ -76,7 +80,7 @@ void Core::Archive::close()
     }
 }
 
-void Core::Archive::addElement(const Shared::Message& message)
+bool Core::Archive::addElement(const Shared::Message& message)
 {
     if (!opened) {
         throw Closed("addElement", jid.toStdString());
@@ -95,7 +99,7 @@ void Core::Archive::addElement(const Shared::Message& message)
     MDB_txn *txn;
     mdb_txn_begin(environment, NULL, 0, &txn);
     int rc;
-    rc = mdb_put(txn, main, &lmdbKey, &lmdbData, 0);
+    rc = mdb_put(txn, main, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
     if (rc == 0) {
         MDB_val orderKey;
         orderKey.mv_size = 8;
@@ -105,15 +109,19 @@ void Core::Archive::addElement(const Shared::Message& message)
         if (rc) {
             qDebug() << "An element couldn't be inserted into the index" << mdb_strerror(rc);
             mdb_txn_abort(txn);
+            return false;
         } else {
             rc = mdb_txn_commit(txn);
             if (rc) {
                 qDebug() << "A transaction error: " << mdb_strerror(rc);
+                return false;
             }
+            return true;
         }
     } else {
         qDebug() << "An element couldn't been added to the archive, skipping" << mdb_strerror(rc);
         mdb_txn_abort(txn);
+        return false;
     }
 }
 
@@ -184,7 +192,7 @@ QString Core::Archive::newestId()
         qDebug() << "Error geting newestId " << mdb_strerror(rc);
         mdb_cursor_close(cursor);
         mdb_txn_abort(txn);
-        throw new Empty(jid.toStdString());
+        throw Empty(jid.toStdString());
     } else {
         std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
         mdb_cursor_close(cursor);
@@ -198,6 +206,65 @@ Shared::Message Core::Archive::oldest()
     return getElement(oldestId());
 }
 
+unsigned int Core::Archive::addElements(const std::list<Shared::Message>& messages)
+{
+    if (!opened) {
+        throw Closed("addElements", jid.toStdString());
+    }
+    
+    int success = 0;
+    int rc = 0;
+    MDB_val lmdbKey, lmdbData;
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, 0, &txn);
+    std::list<Shared::Message>::const_iterator itr = messages.begin();
+    while (rc == 0 && itr != messages.end()) {
+        const Shared::Message& message = *itr;
+        
+        QByteArray ba;
+        QDataStream ds(&ba, QIODevice::WriteOnly);
+        message.serialize(ds);
+        quint64 stamp = message.getTime().toMSecsSinceEpoch();
+        const std::string& id = message.getId().toStdString();
+        
+        lmdbKey.mv_size = id.size();
+        lmdbKey.mv_data = (char*)id.c_str();
+        lmdbData.mv_size = ba.size();
+        lmdbData.mv_data = (uint8_t*)ba.data();
+        
+        rc = mdb_put(txn, main, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
+        if (rc == 0) {
+            MDB_val orderKey;
+            orderKey.mv_size = 8;
+            orderKey.mv_data = (uint8_t*) &stamp;
+            
+            rc = mdb_put(txn, order, &orderKey, &lmdbKey, 0);
+            if (rc) {
+                qDebug() << "An element couldn't be inserted into the index, aborting the transaction" << mdb_strerror(rc);
+            } else {
+                success++;
+            }
+        } else {
+            if (rc == MDB_KEYEXIST) {
+                rc = 0;
+            } else {
+                qDebug() << "An element couldn't been added to the archive, aborting the transaction" << mdb_strerror(rc);
+            }
+        }
+        itr++;
+    }
+    
+    if (rc != 0) {
+        mdb_txn_abort(txn);
+        success = 0;
+    } else {
+        mdb_txn_commit(txn);
+    }
+    
+    return success;
+}
+
+
 QString Core::Archive::oldestId()
 {
     if (!opened) {
@@ -215,7 +282,7 @@ QString Core::Archive::oldestId()
         qDebug() << "Error geting oldestId " << mdb_strerror(rc);
         mdb_cursor_close(cursor);
         mdb_txn_abort(txn);
-        throw new Empty(jid.toStdString());
+        throw Empty(jid.toStdString());
     } else {
         std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
         mdb_cursor_close(cursor);
@@ -237,3 +304,202 @@ long unsigned int Core::Archive::size() const
     mdb_txn_abort(txn);
     return stat.ms_entries;
 }
+
+std::list<Shared::Message> Core::Archive::getBefore(int count, const QString& id)
+{
+    if (!opened) {
+        throw Closed("getBefore", jid.toStdString());
+    }
+    std::list<Shared::Message> res;
+    MDB_cursor* cursor;
+    MDB_txn *txn;
+    MDB_val lmdbKey, lmdbData;
+    int rc;
+    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    if (id == "") {
+        rc = mdb_cursor_open(txn, order, &cursor);
+        rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_LAST);
+        if (rc) {
+            qDebug() << "Error getting before " << mdb_strerror(rc) << ", id:" << id;
+            mdb_cursor_close(cursor);
+            mdb_txn_abort(txn);
+            throw Empty(jid.toStdString());
+        }
+    } else {
+        std::string stdId(id.toStdString());
+        lmdbKey.mv_size = stdId.size();
+        lmdbKey.mv_data = (char*)stdId.c_str();
+        rc = mdb_get(txn, main, &lmdbKey, &lmdbData);
+        if (rc) {
+            qDebug() <<"Error getting before: no reference message" << mdb_strerror(rc) << ", id:" << id;
+            mdb_txn_abort(txn);
+            printKeys();
+            throw NotFound(stdId, jid.toStdString());
+        } else {
+            QByteArray ba((char*)lmdbData.mv_data, lmdbData.mv_size);
+            QDataStream ds(&ba, QIODevice::ReadOnly);
+            
+            Shared::Message msg;
+            msg.deserialize(ds);
+            quint64 stamp = msg.getTime().toMSecsSinceEpoch();
+            lmdbKey.mv_data = (quint8*)&stamp;
+            lmdbKey.mv_size = 8;
+            
+            rc = mdb_cursor_open(txn, order, &cursor);
+            rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_SET);
+            
+            if (rc) {
+                qDebug() << "Error getting before: couldn't set " << mdb_strerror(rc);
+                mdb_cursor_close(cursor);
+                mdb_txn_abort(txn);
+                throw NotFound(stdId, jid.toStdString());
+            } else {
+                rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_PREV);
+                if (rc) {
+                    qDebug() << "Error getting before, couldn't prev " << mdb_strerror(rc);
+                    mdb_cursor_close(cursor);
+                    mdb_txn_abort(txn);
+                    throw NotFound(stdId, jid.toStdString());
+                }
+            }
+        }
+    }
+    
+    do {
+        MDB_val dKey, dData;
+        dKey.mv_size = lmdbData.mv_size;
+        dKey.mv_data = lmdbData.mv_data;
+        rc = mdb_get(txn, main, &dKey, &dData);
+        if (rc) {
+            qDebug() <<"Get error: " << mdb_strerror(rc);
+            std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
+            mdb_txn_abort(txn);
+            throw NotFound(sId, jid.toStdString());
+        } else {
+            QByteArray ba((char*)dData.mv_data, dData.mv_size);
+            QDataStream ds(&ba, QIODevice::ReadOnly);
+            
+            res.emplace_back();
+            Shared::Message& msg = res.back();
+            msg.deserialize(ds);
+        }
+        
+        --count;
+        
+    } while (count > 0 && mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_PREV) == 0);
+    
+    mdb_cursor_close(cursor);
+    mdb_txn_abort(txn);
+    return res;
+}
+
+bool Core::Archive::_isFromTheBeginning()
+{
+    std::string strKey = "beginning";
+    
+    MDB_val lmdbKey, lmdbData;
+    lmdbKey.mv_size = strKey.size();
+    lmdbKey.mv_data = (char*)strKey.c_str();
+    
+    MDB_txn *txn;
+    int rc;
+    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    rc = mdb_get(txn, stats, &lmdbKey, &lmdbData);
+    if (rc == MDB_NOTFOUND) {
+        mdb_txn_abort(txn);
+        return false;
+    } else if (rc) {
+        qDebug() <<"isFromTheBeginning error: " << mdb_strerror(rc);
+        mdb_txn_abort(txn);
+        throw NotFound(strKey, jid.toStdString());
+    } else {
+        uint8_t value = *(uint8_t*)(lmdbData.mv_data);
+        bool is;
+        if (value == 144) {
+            is = false;
+        } else if (value == 72) {
+            is = true;
+        } else {
+            qDebug() <<"isFromTheBeginning error: stored value doesn't match any magic number, the answer is most probably wrong";
+        }
+        return is;
+    }
+}
+
+bool Core::Archive::isFromTheBeginning()
+{
+    if (!opened) {
+        throw Closed("isFromTheBeginning", jid.toStdString());
+    }
+    return fromTheBeginning;
+}
+
+void Core::Archive::setFromTheBeginning(bool is)
+{
+    if (!opened) {
+        throw Closed("setFromTheBeginning", jid.toStdString());
+    }
+    if (fromTheBeginning != is) {
+        fromTheBeginning = is;
+        const std::string& id = "beginning";
+        uint8_t value = 144;
+        if (is) {
+            value = 72;
+        }
+        
+        MDB_val lmdbKey, lmdbData;
+        lmdbKey.mv_size = id.size();
+        lmdbKey.mv_data = (char*)id.c_str();
+        lmdbData.mv_size = sizeof value;
+        lmdbData.mv_data = &value;
+        MDB_txn *txn;
+        mdb_txn_begin(environment, NULL, 0, &txn);
+        int rc;
+        rc = mdb_put(txn, stats, &lmdbKey, &lmdbData, 0);
+        if (rc != 0) {
+            qDebug() << "Couldn't store beginning key into stat database:" << mdb_strerror(rc);
+            mdb_txn_abort(txn);
+        }
+    }
+}
+
+void Core::Archive::printOrder()
+{
+    qDebug() << "Printing order";
+    MDB_txn *txn;
+    int rc;
+    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    MDB_cursor* cursor;
+    rc = mdb_cursor_open(txn, order, &cursor);
+    MDB_val lmdbKey, lmdbData;
+    
+    rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
+    
+    do {
+        std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
+        qDebug() << QString(sId.c_str());
+    } while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
+    
+    mdb_cursor_close(cursor);
+    mdb_txn_abort(txn);
+}
+
+void Core::Archive::printKeys()
+{
+    MDB_txn *txn;
+    int rc;
+    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    MDB_cursor* cursor;
+    rc = mdb_cursor_open(txn, main, &cursor);
+    MDB_val lmdbKey, lmdbData;
+    
+    rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
+    
+    do {
+        std::string sId((char*)lmdbKey.mv_data, lmdbKey.mv_size);
+        qDebug() << QString(sId.c_str());
+    } while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
+    
+    mdb_cursor_close(cursor);
+    mdb_txn_abort(txn);
+}

core/archive.h

@@ -23,6 +23,7 @@
 #include "../global.h"
 #include <lmdb.h>
 #include "../exception.h"
+#include <list>
 
 namespace Core {
 
@@ -36,7 +37,8 @@ public:
     void open(const QString& account);
     void close();
     
-    void addElement(const Shared::Message& message);
+    bool addElement(const Shared::Message& message);
+    unsigned int addElements(const std::list<Shared::Message>& messages);
     Shared::Message getElement(const QString& id);
     Shared::Message oldest();
     QString oldestId();
@@ -44,6 +46,9 @@ public:
     QString newestId();
     void clear();
     long unsigned int size() const;
+    std::list<Shared::Message> getBefore(int count, const QString& id);
+    bool isFromTheBeginning();
+    void setFromTheBeginning(bool is);
     
 public:
     const QString jid;
@@ -97,9 +102,15 @@ public:
     
 private:
     bool opened;
+    bool fromTheBeginning;
     MDB_env* environment;
     MDB_dbi main;
     MDB_dbi order;
+    MDB_dbi stats;
+    
+    bool _isFromTheBeginning();
+    void printOrder();
+    void printKeys();
 };
 
 }

core/contact.cpp

@@ -17,6 +17,7 @@
  */
 
 #include "contact.h"
+#include <QDebug>
 
 Core::Contact::Contact(const QString& pJid, const QString& account, QObject* parent):
     QObject(parent),
@@ -25,9 +26,23 @@ Core::Contact::Contact(const QString& pJid, const QString& account, QObject* par
     groups(),
     archiveState(empty),
     archive(new Archive(jid)),
-    subscriptionState(Shared::unknown)
+    subscriptionState(Shared::unknown),
+    syncronizing(false),
+    requestedCount(0),
+    requestedBefore(),
+    hisoryCache(),
+    appendCache(),
+    responseCache(),
+    requestCache()
 {
     archive->open(account);
+    if (archive->isFromTheBeginning()) {
+        archiveState = beginning;
+    } else {
+        if (archive->size() != 0) {
+            archiveState = chunk;
+        }
+    }
 }
 
 Core::Contact::~Contact()
@@ -91,3 +106,236 @@ unsigned int Core::Contact::groupsCount() const
 {
     return groups.size();
 }
+
+void Core::Contact::addMessageToArchive(const Shared::Message& msg)
+{
+    if (msg.getId().size() > 0 && msg.getBody().size() > 0) {
+        hisoryCache.emplace_back(msg);
+    }
+}
+
+void Core::Contact::requestHistory(int count, const QString& before)
+{
+    if (syncronizing) {
+        requestCache.emplace_back(count, before);
+    } else {
+        performRequest(count, before);
+    }
+}
+
+void Core::Contact::nextRequest()
+{
+    if (syncronizing) {
+        if (requestedCount != -1) {
+            emit historyResponse(responseCache);
+        }
+    }
+    if (requestCache.size() > 0) {
+        std::pair<int, QString> request = requestCache.front();
+        requestCache.pop_front();
+        performRequest(request.first, request.second);
+    } else {
+        syncronizing = false;
+        requestedCount = 0;
+        requestedBefore = "";
+        hisoryCache.clear();
+        responseCache.clear();
+    }
+}
+
+void Core::Contact::performRequest(int count, const QString& before)
+{
+    syncronizing = true;
+    requestedCount = count;
+    requestedBefore = before;
+    hisoryCache.clear();
+    responseCache.clear();
+    
+    switch (archiveState) {
+        case empty:
+            emit needHistory(before, "");
+            break;
+        case chunk:
+        case beginning:
+            if (count != -1) {
+                requestCache.emplace_back(requestedCount, before);
+                requestedCount = -1;
+            }
+            emit needHistory("", archive->newestId());
+            break;
+        case end: 
+            if (count != -1) {
+                QString lBefore;
+                if (responseCache.size() > 0) {
+                    lBefore = responseCache.front().getId();
+                } else {
+                    lBefore = before;
+                }
+                bool found = false;
+                try {
+                    std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), lBefore);
+                    responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
+                    found = true;
+                } catch (Archive::NotFound e) {
+                    requestCache.emplace_back(requestedCount, before);
+                    requestedCount = -1;
+                    emit needHistory(archive->oldestId(), "");
+                }
+                
+                if (found) {
+                    int rSize = responseCache.size();
+                    if (rSize < count) {
+                        if (rSize != 0) {
+                            emit needHistory(responseCache.front().getId(), "");
+                        } else {
+                            emit needHistory(before, "");
+                        }
+                    } else {
+                        nextRequest();
+                    }
+                }
+            } else {
+                emit needHistory(archive->oldestId(), "");
+            }
+            break;
+        case complete:
+            try {
+                std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), before);
+                responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
+            } catch (Archive::NotFound e) {
+                qDebug("requesting id hasn't been found in archive, skipping");
+            }
+            nextRequest();
+            break;
+    }
+}
+
+void Core::Contact::appendMessageToArchive(const Shared::Message& msg)
+{
+    const QString& id = msg.getId(); 
+    if (id.size() > 0) {
+        if (msg.getBody().size() > 0) {
+            switch (archiveState) {
+                case empty:
+                    if (archive->addElement(msg)) {
+                        archiveState = end;
+                    };
+                    if (!syncronizing) {
+                        requestHistory(-1, id);
+                    }
+                    break;
+                case beginning:
+                    appendCache.emplace_back(msg);
+                    if (!syncronizing) {
+                        requestHistory(-1, id);
+                    }
+                    break;
+                case end:
+                    archive->addElement(msg);
+                    break;
+                case chunk:
+                    appendCache.emplace_back(msg);
+                    if (!syncronizing) {
+                        requestHistory(-1, id);
+                    }
+                    break;
+                case complete:
+                    archive->addElement(msg);
+                    break;
+            }
+        } else if (!syncronizing && archiveState == empty) {
+            requestHistory(-1, id);
+        }
+    }
+}
+
+void Core::Contact::flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId)
+{
+    unsigned int added(0);
+    if (hisoryCache.size() > 0) {
+        added = archive->addElements(hisoryCache);
+        qDebug() << "Added" << added << "messages to the archive";
+        hisoryCache.clear();
+    }
+    
+    switch (archiveState) {
+            break;
+        case beginning:
+            if (finished) {
+                archiveState = complete;
+                nextRequest();
+            } else {
+                emit needHistory("", lastId);
+            }
+        case chunk:
+            if (finished) {
+                archiveState = end;
+                nextRequest();
+            } else {
+                emit needHistory("", lastId);
+            }
+            break;
+        case empty:
+            archiveState = end;
+        case end:
+            if (finished) {
+                archiveState = complete;
+                archive->setFromTheBeginning(true);
+            }
+            if (requestedCount != -1) {
+                QString before;
+                if (responseCache.size() > 0) {
+                    before = responseCache.front().getId();
+                } else {
+                    before = requestedBefore;
+                }
+                
+                bool found = false;
+                try {
+                    std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), before);
+                    responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
+                    found = true;
+                } catch (Archive::NotFound e) {}
+                if (!found || requestedCount < responseCache.size()) {
+                    if (archiveState == complete) {
+                        nextRequest();
+                    } else {
+                        emit needHistory(firstId, "");
+                    }
+                } else {
+                    nextRequest();
+                }
+            } else {
+                if (added != 0) {
+                    nextRequest();
+                } else {
+                    emit needHistory(firstId, "");
+                }
+            }
+            break;
+        case complete:
+            nextRequest();
+            break;
+    }
+}
+
+void Core::Contact::requestFromEmpty(int count, const QString& before)
+{
+    if (syncronizing) {
+        qDebug("perform from empty didn't work, another request queued");
+    } else {
+        if (archiveState != empty) {
+            qDebug("perform from empty didn't work, the state is not empty");
+            requestHistory(count, before);
+        } else {
+            syncronizing = true;
+            requestedCount = count;
+            requestedBefore = "";
+            hisoryCache.clear();
+            responseCache.clear();
+            
+            emit needHistory(before, "");
+        }
+    }
+}
+

core/contact.h

@@ -21,8 +21,10 @@
 
 #include <QObject>
 #include <QSet>
+#include <QString>
 #include "archive.h"
 #include "../global.h"
+#include <list>
 
 namespace Core {
 
@@ -39,7 +41,7 @@ public:
     };
     Contact(const QString& pJid, const QString& account, QObject* parent = 0);
     ~Contact();
-    
+
     ArchiveState getArchiveState() const;
     QString getName() const;
     void setName(const QString& n);
@@ -48,13 +50,20 @@ public:
     void setSubscriptionState(Shared::SubscriptionState state);
     Shared::SubscriptionState getSubscriptionState() const;
     unsigned int groupsCount() const;
-    
+    void addMessageToArchive(const Shared::Message& msg);
+    void appendMessageToArchive(const Shared::Message& msg);
+    void flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId);
+    void requestHistory(int count, const QString& before);
+    void requestFromEmpty(int count, const QString& before);
+
 signals:
     void groupAdded(const QString& name);
     void groupRemoved(const QString& name);
     void nameChanged(const QString& name);
     void subscriptionStateChanged(Shared::SubscriptionState state);
-    
+    void historyResponse(const std::list<Shared::Message>& messages);
+    void needHistory(const QString& before, const QString& after);
+
 public:
     const QString jid;
 
@@ -64,6 +73,18 @@ private:
     ArchiveState archiveState;
     Archive* archive;
     Shared::SubscriptionState subscriptionState;
+
+    bool syncronizing;
+    int requestedCount;
+    QString requestedBefore;
+    std::list<Shared::Message> hisoryCache;
+    std::list<Shared::Message> appendCache;
+    std::list<Shared::Message> responseCache;
+    std::list<std::pair<int, QString>> requestCache;
+
+private:
+    void nextRequest();
+    void performRequest(int count, const QString& before);
 };
 
 }

core/squawk.cpp

@@ -96,6 +96,8 @@ void Core::Squawk::addAccount(const QString& login, const QString& server, const
             this, SLOT(onAccountAddPresence(const QString&, const QString&, const QMap<QString, QVariant>&)));
     connect(acc, SIGNAL(removePresence(const QString&, const QString&)), this, SLOT(onAccountRemovePresence(const QString&, const QString&)));
     connect(acc, SIGNAL(message(const Shared::Message&)), this, SLOT(onAccountMessage(const Shared::Message&)));
+    connect(acc, SIGNAL(responseArchive(const QString&, const std::list<Shared::Message>&)), 
+            this, SLOT(onAccountResponseArchive(const QString&, const std::list<Shared::Message>&)));
     
     QMap<QString, QVariant> map = {
         {"login", login},
@@ -221,12 +223,19 @@ void Core::Squawk::sendMessage(const QString& account, const Shared::Message& da
     itr->second->sendMessage(data);
 }
 
-void Core::Squawk::requestArchive(const QString& account, const QString& jid)
+void Core::Squawk::requestArchive(const QString& account, const QString& jid, int count, const QString& before)
 {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to request an archive of non existing account, skipping");
         return;
     }
-    itr->second->requestAchive(jid);
+    itr->second->requestArchive(jid, count, before);
 }
+
+void Core::Squawk::onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list)
+{
+    Account* acc = static_cast<Account*>(sender());
+    emit responseArchive(acc->getName(), jid, list);
+}
+

core/squawk.h

@@ -36,6 +36,7 @@ signals:
     void removePresence(const QString& account, const QString& jid, const QString& name);
     void stateChanged(int state);
     void accountMessage(const QString& account, const Shared::Message& data);
+    void responseArchive(const QString& account, const QString& jid, const std::list<Shared::Message>& list);
     
 public slots:
     void start();
@@ -45,7 +46,7 @@ public slots:
     void disconnectAccount(const QString& account);
     void changeState(int state);
     void sendMessage(const QString& account, const Shared::Message& data);
-    void requestArchive(const QString& account, const QString& jid);
+    void requestArchive(const QString& account, const QString& jid, int count, const QString& before);
     
 private:
     typedef std::deque<Account*> Accounts;
@@ -70,6 +71,7 @@ private slots:
     void onAccountAddPresence(const QString& jid, const QString& name, const QMap<QString, QVariant>& data);
     void onAccountRemovePresence(const QString& jid, const QString& name);
     void onAccountMessage(const Shared::Message& data);
+    void onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list);
 };
 
 }

global.cpp

@@ -176,12 +176,7 @@ bool Shared::Message::getForwarded() const
 
 void Shared::Message::generateRandomId()
 {
-    uuid_t uuid;
+    id = generateUUID();
-    uuid_generate(uuid);
-    
-    char uuid_str[36];
-    uuid_unparse_lower(uuid, uuid_str);
-    id = uuid_str;
 }
 
 QString Shared::Message::getThread() const
@@ -241,3 +236,19 @@ void Shared::Message::deserialize(QDataStream& data)
     data >> outgoing;
     data >> forwarded;
 }
+
+QString Shared::generateUUID()
+{
+    uuid_t uuid;
+    uuid_generate(uuid);
+    
+    char uuid_str[36];
+    uuid_unparse_lower(uuid, uuid_str);
+    return uuid_str;
+}
+
+void Shared::Message::setCurrentTime()
+{
+    time = QDateTime::currentDateTime();
+}
+

global.h

@@ -53,6 +53,8 @@ static const std::deque<QString> availabilityNames = {"Online", "Away", "Absent"
 
 static const std::deque<QString> subscriptionStateThemeIcons = {"edit-none", "arrow-down-double", "arrow-up-double", "dialog-ok", "question"};
 
+QString generateUUID();
+
 class Message {
 public:
     enum Type {
@@ -78,6 +80,7 @@ public:
     void setOutgoing(bool og);
     void setForwarded(bool fwd);
     void setType(Type t);
+    void setCurrentTime();
     
     QString getFrom() const;
     QString getFromJid() const;

main.cpp

@@ -9,6 +9,7 @@
 int main(int argc, char *argv[])
 {
     qRegisterMetaType<Shared::Message>("Shared::Message");
+    qRegisterMetaType<std::list<Shared::Message>>("std::list<Shared::Message>");
     
     QApplication app(argc, argv);
     SignalCatcher sc(&app);
@@ -35,7 +36,7 @@ int main(int argc, char *argv[])
     QObject::connect(&w, SIGNAL(disconnectAccount(const QString&)), squawk, SLOT(disconnectAccount(const QString&)));
     QObject::connect(&w, SIGNAL(changeState(int)), squawk, SLOT(changeState(int)));
     QObject::connect(&w, SIGNAL(sendMessage(const QString&, const Shared::Message&)), squawk, SLOT(sendMessage(const QString&, const Shared::Message&)));
-    QObject::connect(&w, SIGNAL(requestArchive(const QString&, const QString&)), squawk, SLOT(requestArchive(const QString&, const QString&)));
+    QObject::connect(&w, SIGNAL(requestArchive(const QString&, const QString&, int, const QString&)), squawk, SLOT(requestArchive(const QString&, const QString&, int, const QString&)));
     
     QObject::connect(squawk, SIGNAL(newAccount(const QMap<QString, QVariant>&)), &w, SLOT(newAccount(const QMap<QString, QVariant>&)));
     QObject::connect(squawk, SIGNAL(accountAvailabilityChanged(const QString&, int)), &w, SLOT(accountAvailabilityChanged(const QString&, int)));
@@ -53,6 +54,8 @@ int main(int argc, char *argv[])
     QObject::connect(squawk, SIGNAL(removePresence(const QString&, const QString&, const QString&)), &w, SLOT(removePresence(const QString&, const QString&, const QString&)));
     QObject::connect(squawk, SIGNAL(stateChanged(int)), &w, SLOT(stateChanged(int)));
     QObject::connect(squawk, SIGNAL(accountMessage(const QString&, const Shared::Message&)), &w, SLOT(accountMessage(const QString&, const Shared::Message&)));
+    QObject::connect(squawk, SIGNAL(responseArchive(const QString&, const QString&, const std::list<Shared::Message>&)), 
+                     &w, SLOT(responseArchive(const QString&, const QString&, const std::list<Shared::Message>&)));
     
     //qDebug() << QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
     

ui/CMakeLists.txt

@@ -8,6 +8,10 @@ set(CMAKE_AUTOUIC ON)
 
 # Find the QtWidgets library
 find_package(Qt5Widgets CONFIG REQUIRED)
+find_package(Qt5Qml CONFIG REQUIRED)
+find_package(Qt5QuickCompiler)
+find_package(Qt5Quick CONFIG REQUIRED)
+find_package(Qt5QuickWidgets CONFIG REQUIRED)
 
 set(squawkUI_SRC
   squawk.cpp
@@ -28,6 +32,9 @@ add_library(squawkUI ${squawkUI_SRC})
 
 # Use the Widgets module from Qt 5.
 target_link_libraries(squawkUI Qt5::Widgets)
+target_link_libraries(squawkUI Qt5::Quick)
+target_link_libraries(squawkUI Qt5::Qml)
+target_link_libraries(squawkUI Qt5::QuickWidgets)
 
 # Install the executable
 install(TARGETS squawkUI DESTINATION lib)

ui/conversation.cpp

@@ -20,6 +20,7 @@
 #include "ui_conversation.h"
 #include <QDebug>
 #include <QScrollBar>
+#include <QTimer>
 
 Conversation::Conversation(Models::Contact* p_contact, QWidget* parent):
     QWidget(parent),
@@ -30,7 +31,9 @@ Conversation::Conversation(Models::Contact* p_contact, QWidget* parent):
     activePalResource(),
     thread(),
     scroll(down),
-    manualSliderChange(false)
+    manualSliderChange(false),
+    requestingHistory(false),
+    everShown(false)
 {
     m_ui->setupUi(this);
     m_ui->splitter->setSizes({300, 0});
@@ -116,6 +119,7 @@ void Conversation::addMessage(const Shared::Message& data)
 {
     int pos = m_ui->scrollArea->verticalScrollBar()->sliderPosition();
     int max = m_ui->scrollArea->verticalScrollBar()->maximum();
+    
     MessageLine::Position place = line->message(data);
     if (place == MessageLine::invalid) {
         return;
@@ -183,6 +187,7 @@ void Conversation::onEnterPressed()
         msg.setBody(body);
         msg.setOutgoing(true);
         msg.generateRandomId();
+        msg.setCurrentTime();
         addMessage(msg);
         emit sendMessage(msg);
     }
@@ -195,6 +200,18 @@ void Conversation::onMessagesResize(int amount)
         case down:
             m_ui->scrollArea->verticalScrollBar()->setValue(m_ui->scrollArea->verticalScrollBar()->maximum());
             break;
+        case keep: {
+            int max = m_ui->scrollArea->verticalScrollBar()->maximum();
+            int value = m_ui->scrollArea->verticalScrollBar()->value() + amount;
+            m_ui->scrollArea->verticalScrollBar()->setValue(value);
+            
+            if (value == max) {
+                scroll = down;
+            } else {
+                scroll = nothing;
+            }
+        }
+            break;
         default:
             break;
     }
@@ -207,7 +224,35 @@ void Conversation::onSliderValueChanged(int value)
         if (value == m_ui->scrollArea->verticalScrollBar()->maximum()) {
             scroll = down;
         } else {
+            if (!requestingHistory && value == 0) {
+                m_ui->historyStatus->setPixmap(QIcon::fromTheme("view-refresh").pixmap(25));
+                requestingHistory = true;
+                emit requestArchive(line->firstMessageId());
+            }
             scroll = nothing;
         }
     }
 }
+
+void Conversation::responseArchive(const std::list<Shared::Message> list)
+{
+    requestingHistory = false;
+    scroll = keep;
+    
+    m_ui->historyStatus->clear();
+    for (std::list<Shared::Message>::const_iterator itr = list.begin(), end = list.end(); itr != end; ++itr) {
+        addMessage(*itr);
+    }
+}
+
+void Conversation::showEvent(QShowEvent* event)
+{
+    if (!everShown) {
+        everShown = true;
+        m_ui->historyStatus->setPixmap(QIcon::fromTheme("view-refresh").pixmap(25));
+        requestingHistory = true;
+        emit requestArchive(line->firstMessageId());
+    }
+    
+    QWidget::showEvent(event);
+}

ui/conversation.h

@@ -56,9 +56,12 @@ public:
     void addMessage(const Shared::Message& data);
     
     void setPalResource(const QString& res);
+    void responseArchive(const std::list<Shared::Message> list);
+    void showEvent(QShowEvent * event) override;
     
 signals:
     void sendMessage(const Shared::Message& message);
+    void requestArchive(const QString& before);
     
 protected:
     void setState(Shared::Availability state);
@@ -85,6 +88,8 @@ private:
     QString thread;
     Scroll scroll;
     bool manualSliderChange;
+    bool requestingHistory;
+    bool everShown;
 };
 
 #endif // CONVERSATION_H

ui/conversation.ui

@@ -105,6 +105,13 @@
            </property>
           </spacer>
          </item>
+         <item>
+          <widget class="QLabel" name="historyStatus">
+           <property name="text">
+            <string/>
+           </property>
+          </widget>
+         </item>
          <item>
           <widget class="QLabel" name="avatar">
            <property name="text">
@@ -134,7 +141,7 @@
             <x>0</x>
             <y>0</y>
             <width>572</width>
-            <height>162</height>
+            <height>95</height>
            </rect>
           </property>
           <layout class="QHBoxLayout" name="horizontalLayout_2">

ui/messageline.cpp

@@ -76,6 +76,12 @@ MessageLine::Position MessageLine::message(const Shared::Message& msg)
     
     QLabel* body = new QLabel(msg.getBody());
     QLabel* sender = new QLabel();
+    QLabel* time = new QLabel(msg.getTime().toLocalTime().toString());
+    QFont dFont = time->font();
+    dFont.setItalic(true);
+    dFont.setPointSize(dFont.pointSize() - 2);
+    time->setFont(dFont);
+    time->setForegroundRole(QPalette::ToolTipText);
     QFont f;
     f.setBold(true);
     sender->setFont(f);
@@ -84,10 +90,12 @@ MessageLine::Position MessageLine::message(const Shared::Message& msg)
     
     vBox->addWidget(sender);
     vBox->addWidget(body);
+    vBox->addWidget(time);
     
     if (msg.getOutgoing()) {
-        body->setAlignment(Qt::AlignRight);
+        //body->setAlignment(Qt::AlignRight);
         sender->setAlignment(Qt::AlignRight);
+        time->setAlignment(Qt::AlignRight);
         sender->setText(myName);
         hBox->addStretch();
         hBox->addWidget(message);
@@ -132,3 +140,13 @@ void MessageLine::resizeEvent(QResizeEvent* event)
     QWidget::resizeEvent(event);
     emit resize(event->size().height() - event->oldSize().height());
 }
+
+
+QString MessageLine::firstMessageId() const
+{
+    if (messageOrder.size() == 0) {
+        return "";
+    } else {
+        return messageOrder.begin()->second->getId();
+    }
+}

ui/messageline.h

@@ -25,6 +25,7 @@
 #include <QLabel>
 #include <QResizeEvent>
 #include "../global.h"
+#include <QtQuickWidgets/QQuickWidget>
 
 class MessageLine : public QWidget
 {
@@ -42,6 +43,9 @@ public:
     Position message(const Shared::Message& msg);
     void setMyName(const QString& name);
     void setPalName(const QString& jid, const QString& name);
+    QString firstMessageId() const;
+    void showBusyIndicator();
+    void hideBusyIndicator();
     
 signals:
     void resize(int amount);
@@ -67,6 +71,7 @@ private:
     QString myName;
     std::map<QString, QString> palNames;
     std::deque<QHBoxLayout*> views;
+    QQuickWidget busy;
 };
 
 #endif // MESSAGELINE_H

ui/squawk.cpp

@@ -189,6 +189,7 @@ void Squawk::onRosterItemDoubleClicked(const QModelIndex& item)
                 conv->setAttribute(Qt::WA_DeleteOnClose);
                 connect(conv, SIGNAL(destroyed(QObject*)), this, SLOT(onConversationClosed(QObject*)));
                 connect(conv, SIGNAL(sendMessage(const Shared::Message&)), this, SLOT(onConversationMessage(const Shared::Message&)));
+                connect(conv, SIGNAL(requestArchive(const QString&)), this, SLOT(onConversationRequestArchive(const QString&)));
                 
                 conversations.insert(std::make_pair(id, conv));
                 rosterModel.dropMessages(account, jid);
@@ -198,7 +199,6 @@ void Squawk::onRosterItemDoubleClicked(const QModelIndex& item)
                 if (res.size() > 0) {
                     itr->second->setPalResource(res);
                 }
-                requestArchive(account, jid);
             }
         }
     }
@@ -234,3 +234,19 @@ void Squawk::onConversationMessage(const Shared::Message& msg)
     
     emit sendMessage(conv->getAccount(), msg);
 }
+
+void Squawk::onConversationRequestArchive(const QString& before)
+{
+    Conversation* conv = static_cast<Conversation*>(sender());
+    requestArchive(conv->getAccount(), conv->getJid(), 20, before); //TODO amount as a settings value
+}
+
+void Squawk::responseArchive(const QString& account, const QString& jid, const std::list<Shared::Message>& list)
+{
+    Models::Roster::ElId id(account, jid);
+    
+    Conversations::const_iterator itr = conversations.find(id);
+    if (itr != conversations.end()) {
+        itr->second->responseArchive(list);
+    }
+}

ui/squawk.h

@@ -6,6 +6,7 @@
 #include <QCloseEvent>
 #include <deque>
 #include <map>
+#include <list>
 
 #include "accounts.h"
 #include "conversation.h"
@@ -31,7 +32,7 @@ signals:
     void disconnectAccount(const QString&);
     void changeState(int state);
     void sendMessage(const QString& account, const Shared::Message& data);
-    void requestArchive(const QString& account, const QString& jid);
+    void requestArchive(const QString& account, const QString& jid, int count, const QString& before);
     
 public slots:
     void newAccount(const QMap<QString, QVariant>& account);
@@ -47,6 +48,7 @@ public slots:
     void removePresence(const QString& account, const QString& jid, const QString& name);
     void stateChanged(int state);
     void accountMessage(const QString& account, const Shared::Message& data);
+    void responseArchive(const QString& account, const QString& jid, const std::list<Shared::Message>& list);
     
 private:
     typedef std::map<Models::Roster::ElId, Conversation*> Conversations;
@@ -66,6 +68,7 @@ private slots:
     void onComboboxActivated(int index);
     void onRosterItemDoubleClicked(const QModelIndex& item);
     void onConversationMessage(const Shared::Message& msg);
+    void onConversationRequestArchive(const QString& before);
     
 };