feat(MainDb): provide a way to fetch messages from db key

src/chat/chat-message/chat-message-p.h

@@ -149,8 +149,6 @@ private:
 	ContentType cContentType;
 	std::string cText;
 
-	std::weak_ptr<ConferenceChatMessageEvent> chatEvent;
-
 	// TODO: Remove my comment. VARIABLES OK.
 	// Do not expose.
 

src/chat/chat-message/chat-message.cpp

@@ -586,9 +586,10 @@ void ChatMessagePrivate::store() {
 		return;
 	}
 
-	shared_ptr<ConferenceChatMessageEvent> eventLog = chatEvent.lock();
-	if (eventLog) {
-		q->getChatRoom()->getCore()->getPrivate()->mainDb->updateEvent(eventLog);
+	unique_ptr<MainDb> &mainDb = q->getChatRoom()->getCore()->getPrivate()->mainDb;
+	if (dbKey.isValid()) {
+		shared_ptr<EventLog> eventLog = mainDb->getEventFromKey(dbKey);
+		mainDb->updateEvent(eventLog);
 
 		if (direction == ChatMessage::Direction::Incoming) {
 			if (!hasFileTransferContent()) {
@@ -602,9 +603,8 @@ void ChatMessagePrivate::store() {
 			}
 		}
 	} else {
-		eventLog = make_shared<ConferenceChatMessageEvent>(time, q->getSharedFromThis());
-		chatEvent = eventLog;
-		q->getChatRoom()->getCore()->getPrivate()->mainDb->addEvent(eventLog);
+		shared_ptr<EventLog> eventLog = make_shared<ConferenceChatMessageEvent>(time, q->getSharedFromThis());
+		mainDb->addEvent(eventLog);
 
 		if (direction == ChatMessage::Direction::Incoming) {
 			if (hasFileTransferContent()) {

src/db/main-db.cpp

@@ -1311,6 +1311,60 @@ MainDb::MainDb (const shared_ptr<Core> &core) : AbstractDb(*new MainDbPrivate),
 		return count;
 	}
 
+	shared_ptr<EventLog> MainDb::getEventFromKey (const MainDbKey &dbKey) {
+		shared_ptr<EventLog> event;
+
+		if (!dbKey.isValid()) {
+			lWarning() << "Unable to get event from invalid key.";
+			return event;
+		}
+
+		unique_ptr<MainDb> &q = dbKey.getPrivate()->core.lock()->getPrivate()->mainDb;
+		MainDbPrivate *d = q->getPrivate();
+
+		if (!q->isConnected()) {
+			lWarning() << "Unable to get event from key. Not connected.";
+			return event;
+		}
+
+		const long long &storageId = dbKey.getPrivate()->storageId;
+		event = d->getEventFromCache(storageId);
+		if (event)
+			return event;
+
+		// TODO: Improve. Deal with all events in the future.
+		static string query = "SELECT peer_sip_address.value, local_sip_address.value, type, event.creation_time"
+			"  FROM event, conference_event, chat_room, sip_address AS peer_sip_address, sip_address as local_sip_address"
+			"  WHERE event.id = :eventId"
+			"  AND conference_event.event_id = event.id"
+			"  AND conference_event.chat_room_id = chat_room.id"
+			"  AND chat_room.peer_sip_address_id = peer_sip_address.id"
+			"  AND chat_room.local_sip_address_id = local_sip_address.id";
+
+		L_BEGIN_LOG_EXCEPTION
+
+		soci::session *session = d->dbSession.getBackendSession<soci::session>();
+		soci::transaction tr(*session);
+
+		string peerSipAddress;
+		string localSipAddress;
+		int type;
+		tm creationTime;
+		*session << query, soci::into(peerSipAddress), soci::into(localSipAddress), soci::into(type),
+			soci::into(creationTime), soci::use(storageId);
+
+		event = d->selectGenericConferenceEvent(
+			storageId,
+			static_cast<EventLog::Type>(type),
+			Utils::getTmAsTimeT(creationTime),
+			ChatRoomId(IdentityAddress(peerSipAddress), IdentityAddress(localSipAddress))
+		);
+
+		L_END_LOG_EXCEPTION
+
+		return event;
+	}
+
 	list<shared_ptr<EventLog>> MainDb::getConferenceNotifiedEvents (
 		const ChatRoomId &chatRoomId,
 		unsigned int lastNotifyId
@@ -1449,7 +1503,7 @@ MainDb::MainDb (const shared_ptr<Core> &core) : AbstractDb(*new MainDbPrivate),
 		if (getUnreadChatMessagesCount(chatRoomId) == 0)
 			return;
 
-		string query = "UPDATE FROM conference_chat_message_event"
+		string query = "UPDATE conference_chat_message_event"
 			"  SET state = " + Utils::toString(static_cast<int>(ChatMessage::State::Displayed)) + " ";
 		query += "WHERE";
 		if (chatRoomId.isValid())

src/db/main-db.h

@@ -34,6 +34,7 @@ class ChatMessage;
 class ChatRoom;
 class Core;
 class EventLog;
+class MainDbKey;
 class MainDbPrivate;
 
 class MainDb : public AbstractDb, public CoreAccessor {
@@ -61,6 +62,8 @@ public:
 	static bool deleteEvent (const std::shared_ptr<EventLog> &eventLog);
 	int getEventsCount (FilterMask mask = NoFilter) const;
 
+	static std::shared_ptr<EventLog> getEventFromKey (const MainDbKey &dbKey);
+
 	// ---------------------------------------------------------------------------
 	// Conference notified events.
 	// ---------------------------------------------------------------------------