/** 
 * @file LLNearbyChat.cpp
 * @brief Nearby chat history scrolling panel implementation
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library 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;
 * version 2.1 of the License only.
 * 
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"
#include "llnearbychat.h"
#include "llviewercontrol.h"
#include "llviewerwindow.h"
#include "llrootview.h"
//#include "llchatitemscontainerctrl.h"
#include "lliconctrl.h"
#include "llfloatersidepanelcontainer.h"
#include "llfocusmgr.h"
#include "lllogchat.h"
#include "llresizebar.h"
#include "llresizehandle.h"
#include "llmenugl.h"
#include "llviewermenu.h"//for gMenuHolder

#include "llnearbychathandler.h"
#include "llchannelmanager.h"

#include "llagent.h" 			// gAgent
#include "llchathistory.h"
#include "llstylemap.h"

#include "llavatarnamecache.h"

#include "lldraghandle.h"

#include "llnearbychatbar.h"
#include "llfloaterreg.h"
#include "lltrans.h"

// --- 2 functions in the global namespace :( ---
bool isWordsName(const std::string& name)
{
	// checking to see if it's display name plus username in parentheses
	S32 open_paren = name.find(" (", 0);
	S32 close_paren = name.find(')', 0);

	if (open_paren != std::string::npos &&
		close_paren == name.length()-1)
	{
		return true;
	}
	else
	{
		//checking for a single space
		S32 pos = name.find(' ', 0);
		return std::string::npos != pos && name.rfind(' ', name.length()) == pos && 0 != pos && name.length()-1 != pos;
	}
}

std::string appendTime()
{
	time_t utc_time;
	utc_time = time_corrected();
	std::string timeStr ="["+ LLTrans::getString("TimeHour")+"]:["
		+LLTrans::getString("TimeMin")+"]";

	LLSD substitution;

	substitution["datetime"] = (S32) utc_time;
	LLStringUtil::format (timeStr, substitution);

	return timeStr;
}

static const S32 RESIZE_BAR_THICKNESS = 3;

static LLRegisterPanelClassWrapper<LLNearbyChat> t_panel_nearby_chat("panel_nearby_chat");

LLNearbyChat::LLNearbyChat(const LLNearbyChat::Params& p) 
:	LLPanel(p),
	mChatHistory(NULL)
{
}

BOOL LLNearbyChat::postBuild()
{
	//menu
	LLUICtrl::CommitCallbackRegistry::ScopedRegistrar registrar;
	LLUICtrl::EnableCallbackRegistry::ScopedRegistrar enable_registrar;

	enable_registrar.add("NearbyChat.Check", boost::bind(&LLNearbyChat::onNearbyChatCheckContextMenuItem, this, _2));
	registrar.add("NearbyChat.Action", boost::bind(&LLNearbyChat::onNearbyChatContextMenuItemClicked, this, _2));

	
	LLMenuGL* menu = LLUICtrlFactory::getInstance()->createFromFile<LLMenuGL>("menu_nearby_chat.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
	if(menu)
		mPopupMenuHandle = menu->getHandle();

	gSavedSettings.declareS32("nearbychat_showicons_and_names",2,"NearByChat header settings",true);

	mChatHistory = getChild<LLChatHistory>("chat_history");

	if(!LLPanel::postBuild())
		return false;
	
	return true;
}


void LLNearbyChat::appendMessage(const LLChat& chat, const LLSD &args)
{
	LLChat& tmp_chat = const_cast<LLChat&>(chat);

	if(tmp_chat.mTimeStr.empty())
		tmp_chat.mTimeStr = appendTime();

	if (!chat.mMuted)
	{
		tmp_chat.mFromName = chat.mFromName;
		LLSD chat_args;
		if (args) chat_args = args;
		chat_args["use_plain_text_chat_history"] =
				gSavedSettings.getBOOL("PlainTextChatHistory");
		chat_args["show_time"] = gSavedSettings.getBOOL("IMShowTime");
		chat_args["show_names_for_p2p_conv"] = false
				|| gSavedSettings.getBOOL("IMShowNamesForP2PConv");

		mChatHistory->appendMessage(chat, chat_args);
	}
}

void	LLNearbyChat::addMessage(const LLChat& chat,bool archive,const LLSD &args)
{
	appendMessage(chat, args);

	if(archive)
	{
		mMessageArchive.push_back(chat);
		if(mMessageArchive.size()>200)
			mMessageArchive.erase(mMessageArchive.begin());
	}

	// logging
	if (!args["do_not_log"].asBoolean()
			&& gSavedPerAccountSettings.getBOOL("LogNearbyChat"))
	{
		std::string from_name = chat.mFromName;

		if (chat.mSourceType == CHAT_SOURCE_AGENT)
		{
			// if the chat is coming from an agent, log the complete name
			LLAvatarName av_name;
			LLAvatarNameCache::get(chat.mFromID, &av_name);

			if (!av_name.mIsDisplayNameDefault)
			{
				from_name = av_name.getCompleteName();
			}
		}

		LLLogChat::saveHistory("chat", from_name, chat.mFromID, chat.mText);
	}
}

void LLNearbyChat::onNearbySpeakers()
{
	LLSD param;
	param["people_panel_tab_name"] = "nearby_panel";
	LLFloaterSidePanelContainer::showPanel("people", "panel_people", param);
}

void	LLNearbyChat::onNearbyChatContextMenuItemClicked(const LLSD& userdata)
{
}

bool	LLNearbyChat::onNearbyChatCheckContextMenuItem(const LLSD& userdata)
{
	std::string str = userdata.asString();
	if(str == "nearby_people")
		onNearbySpeakers();	
	return false;
}

void LLNearbyChat::removeScreenChat()
{
	LLNotificationsUI::LLScreenChannelBase* chat_channel = LLNotificationsUI::LLChannelManager::getInstance()->findChannelByID(LLUUID(gSavedSettings.getString("NearByChatChannelUUID")));
	if(chat_channel)
	{
		chat_channel->removeToastsFromChannel();
	}
}

void	LLNearbyChat::setVisible(BOOL visible)
{
	if(visible)
	{
		removeScreenChat();
	}

	LLPanel::setVisible(visible);
}


void LLNearbyChat::getAllowedRect(LLRect& rect)
{
	rect = gViewerWindow->getWorldViewRectScaled();
}

void LLNearbyChat::updateChatHistoryStyle()
{
	mChatHistory->clear();

	LLSD do_not_log;
	do_not_log["do_not_log"] = true;
	for(std::vector<LLChat>::iterator it = mMessageArchive.begin();it!=mMessageArchive.end();++it)
	{
		// Update the messages without re-writing them to a log file.
		addMessage(*it,false, do_not_log);
	}
}

//static 
void LLNearbyChat::processChatHistoryStyleUpdate()
{
	LLFloater* chat_bar = LLFloaterReg::getInstance("chat_bar");
	LLNearbyChat* nearby_chat = chat_bar->findChild<LLNearbyChat>("nearby_chat");
	if(nearby_chat)
		nearby_chat->updateChatHistoryStyle();
}

void LLNearbyChat::loadHistory()
{
	LLSD do_not_log;
	do_not_log["do_not_log"] = true;

	std::list<LLSD> history;
	LLLogChat::loadAllHistory("chat", history);

	std::list<LLSD>::const_iterator it = history.begin();
	while (it != history.end())
	{
		const LLSD& msg = *it;

		std::string from = msg[IM_FROM];
		LLUUID from_id;
		if (msg[IM_FROM_ID].isDefined())
		{
			from_id = msg[IM_FROM_ID].asUUID();
		}
		else
 		{
			std::string legacy_name = gCacheName->buildLegacyName(from);
 			gCacheName->getUUID(legacy_name, from_id);
 		}

		LLChat chat;
		chat.mFromName = from;
		chat.mFromID = from_id;
		chat.mText = msg[IM_TEXT].asString();
		chat.mTimeStr = msg[IM_TIME].asString();
		chat.mChatStyle = CHAT_STYLE_HISTORY;

		chat.mSourceType = CHAT_SOURCE_AGENT;
		if (from_id.isNull() && SYSTEM_FROM == from)
		{	
			chat.mSourceType = CHAT_SOURCE_SYSTEM;
			
		}
		else if (from_id.isNull())
		{
			chat.mSourceType = isWordsName(from) ? CHAT_SOURCE_UNKNOWN : CHAT_SOURCE_OBJECT;
		}

		addMessage(chat, true, do_not_log);

		it++;
	}
}

//static
LLNearbyChat* LLNearbyChat::getInstance()
{
	LLFloater* chat_bar = LLFloaterReg::getInstance("chat_bar");
	return chat_bar->findChild<LLNearbyChat>("nearby_chat");
}

////////////////////////////////////////////////////////////////////////////////
//
void LLNearbyChat::onFocusReceived()
{
	setBackgroundOpaque(true);
	LLPanel::onFocusReceived();
}

////////////////////////////////////////////////////////////////////////////////
//
void LLNearbyChat::onFocusLost()
{
	setBackgroundOpaque(false);
	LLPanel::onFocusLost();
}

BOOL	LLNearbyChat::handleMouseDown(S32 x, S32 y, MASK mask)
{
	//fix for EXT-6625
	//highlight NearbyChat history whenever mouseclick happen in NearbyChat
	//setting focus to eidtor will force onFocusLost() call that in its turn will change 
	//background opaque. This all happenn since NearByChat is "chrome" and didn't process focus change.
	
	if(mChatHistory)
		mChatHistory->setFocus(TRUE);
	return LLPanel::handleMouseDown(x, y, mask);
}

void LLNearbyChat::draw()
{
	// *HACK: Update transparency type depending on whether our children have focus.
	// This is needed because this floater is chrome and thus cannot accept focus, so
	// the transparency type setting code from LLFloater::setFocus() isn't reached.
	if (getTransparencyType() != TT_DEFAULT)
	{
		setTransparencyType(hasFocus() ? TT_ACTIVE : TT_INACTIVE);
	}

	LLPanel::draw();
}