/** 
 * @file llliveappconfig.cpp
 * @brief Configuration information for an LLApp that overrides indra.xml
 *
 * $LicenseInfo:firstyear=2003&license=viewerlgpl$
 * 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 "linden_common.h"

#include "llliveappconfig.h"

#include "llapp.h"
#include "llsd.h"
#include "llsdserialize.h"

LLLiveAppConfig::LLLiveAppConfig(
	const std::string& filename,
	F32 refresh_period,
	LLApp::OptionPriority priority) :
	LLLiveFile(filename, refresh_period),
	mPriority(priority)
{ }


LLLiveAppConfig::~LLLiveAppConfig()
{ }

// virtual 
bool LLLiveAppConfig::loadFile()
{
	LL_INFOS() << "LLLiveAppConfig::loadFile(): reading from "
		<< filename() << LL_ENDL;
    std::ifstream file(filename().c_str());
	LLSD config;
    if (file.is_open())
    {
        LLSDSerialize::fromXML(config, file);
		if(!config.isMap())
		{
			LL_WARNS() << "Live app config not an map in " << filename()
				<< " Ignoring the data." << LL_ENDL;
			return false;
		}
		file.close();
    }
	else
	{
		LL_INFOS() << "Live file " << filename() << " does not exit." << LL_ENDL;
	}
	// *NOTE: we do not handle the else case here because we would not
	// have attempted to load the file unless LLLiveFile had
	// determined there was a reason to load it. This only happens
	// when either the file has been updated or it is either suddenly
	// in existence or has passed out of existence. Therefore, we want
	// to set the config to an empty config, and return that it
	// changed.

	LLApp* app = LLApp::instance();
	if(app) app->setOptionData(mPriority, config);
	return true;
}