Merge branch 'pr1489'

Removes chat history of friend when removed, fixes #1486

src/historykeeper.cpp

@@ -138,6 +138,24 @@ HistoryKeeper::~HistoryKeeper()
     delete db;
 }
 
+void HistoryKeeper::removeFriendHistory(const QString& chat)
+{
+    int chat_id = getChatID(chat, ctSingle).first;
+
+    db->exec("BEGIN TRANSACTION;");
+
+    QString cmd = QString("DELETE FROM chats WHERE name = '%1';").arg(chat);
+    db->exec(cmd);
+    cmd = QString("DELETE FROM aliases WHERE user_id = '%1';").arg(chat);
+    db->exec(cmd);
+    cmd = QString("DELETE FROM sent_status WHERE id IN (SELECT id FROM history WHERE chat_id = '%1');").arg(chat_id);
+    db->exec(cmd);
+    cmd = QString("DELETE FROM history WHERE chat_id = '%1';").arg(chat_id);
+    db->exec(cmd);
+
+    db->exec("COMMIT TRANSACTION;");
+}
+
 qint64 HistoryKeeper::addChatEntry(const QString& chat, const QString& message, const QString& sender, const QDateTime &dt, bool isSent)
 {
     QList<QString> cmds = generateAddChatEntryCmd(chat, message, sender, dt, isSent);

src/historykeeper.h

@@ -54,6 +54,7 @@ public:
     static bool removeHistory(int encrypted = -1);
     static QList<HistMessage> exportMessagesDeleteFile(int encrypted = -1);
 
+    void removeFriendHistory(const QString& chat);
     qint64 addChatEntry(const QString& chat, const QString& message, const QString& sender, const QDateTime &dt, bool isSent);
     qint64 addGroupChatEntry(const QString& chat, const QString& message, const QString& sender, const QDateTime &dt);
     QList<HistMessage> getChatHistory(ChatType ct, const QString &chat, const QDateTime &time_from, const QDateTime &time_to);

src/widget/widget.cpp

@@ -866,6 +866,7 @@ void Widget::removeFriend(Friend* f, bool fake)
     }
     FriendList::removeFriend(f->getFriendID(), fake);
     Nexus::getCore()->removeFriend(f->getFriendID(), fake);
+    HistoryKeeper::getInstance()->removeFriendHistory(f->getToxID().publicKey);
     delete f;
     if (ui->mainHead->layout()->isEmpty())
         onAddClicked();