/*
    Object Viewer Qt
    Copyright (C) 2010 Dzmitry Kamiahin <dnk-88@tut.by>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "stdpch.h"
#include "configuration.h"

// NeL includes
#include <nel/misc/debug.h>
#include <nel/misc/hierarchical_timer.h>
#include <nel/misc/config_file.h>
#include <nel/misc/path.h>

#include "modules.h"

using namespace std;
using namespace NLMISC;

namespace NLQT
{

CConfiguration::CConfiguration()
{

}

CConfiguration::~CConfiguration()
{

}

void CConfiguration::init()
{
	nldebug("CConfiguration::init");

	// verify data
	nlassert(!ConfigCallbacks.size());

	// load config
	try
	{
		ConfigFile.load(NLQT_CONFIG_FILE);
	}
	catch(...)
	{
		nlerror("Error opening files object_viewer.cfg or object_viewer_default.cfg. Check this files");
	}
	// setup config file callback
	Modules::config().setCallback("SearchPaths", CConfigCallback(this, &CConfiguration::cfcbSearchPaths));

}

void CConfiguration::release()
{
	nldebug("CConfiguration::release");

	Modules::config().dropCallback("SearchPaths");

	// save and release the config file
	if (ConfigFile.exists("SaveConfig") && ConfigFile.getVarPtr("SaveConfig")->asBool())
	{
		ConfigFile.save();
	}
	ConfigFile.clear();

	// release the search paths etc
	CPath::releaseInstance();

	// verify data
	nlassert(!ConfigCallbacks.size());
}

void CConfiguration::updateUtilities()
{
	//H_AUTO2
	CConfigFile::checkConfigFiles();
}

void CConfiguration::configSearchPaths()
{
	cfcbSearchPaths(Modules::config().getConfigFile().getVar("SearchPaths"));
}

void CConfiguration::configRemapExtensions()
{
	CConfigFile::CVar *var;
	var = ConfigFile.getVarPtr("RemapExtensions");
	uint varsize = var->size();
	for (uint i = 0; i < varsize; i += 2)
		CPath::remapExtension(var->asString(i), var->asString(i + 1), true);
}

void CConfiguration::setAndCallback(const std::string &varName, CConfigCallback configCallback)
{
	ConfigCallbacks[varName] = configCallback;
	ConfigFile.setCallback(varName, cbConfigCallback);
	configCallback(*ConfigFile.getVarPtr(varName));
}

void CConfiguration::setCallback(const std::string &varName, CConfigCallback configCallback)
{
	ConfigCallbacks[varName] = configCallback;
	ConfigFile.setCallback(varName, cbConfigCallback);
}

void CConfiguration::dropCallback(const std::string &varName)
{
	ConfigFile.setCallback(varName, NULL);
	ConfigCallbacks.erase(varName);
}

float CConfiguration::getValue(const string &varName, float defaultValue)
{
	if (ConfigFile.exists(varName)) return ConfigFile.getVar(varName).asFloat();
	CConfigFile::CVar varToCopy;
	varToCopy.forceAsDouble((double)defaultValue);
	ConfigFile.insertVar(varName, varToCopy);
	return defaultValue;
}

double CConfiguration::getValue(const string &varName, double defaultValue)
{
	if (ConfigFile.exists(varName)) return ConfigFile.getVar(varName).asDouble();
	CConfigFile::CVar varToCopy;
	varToCopy.forceAsDouble(defaultValue);
	ConfigFile.insertVar(varName, varToCopy);
	return defaultValue;
}

int CConfiguration::getValue(const string &varName, int defaultValue)
{
	if (ConfigFile.exists(varName)) return ConfigFile.getVar(varName).asInt();
	CConfigFile::CVar varToCopy;
	varToCopy.forceAsInt(defaultValue);
	ConfigFile.insertVar(varName, varToCopy);
	return defaultValue;
}

string CConfiguration::getValue(const string &varName, const string &defaultValue)
{
	if (ConfigFile.exists(varName)) return ConfigFile.getVar(varName).asString();
	CConfigFile::CVar varToCopy;
	varToCopy.forceAsString(defaultValue);
	ConfigFile.insertVar(varName, varToCopy);
	return defaultValue;
}

ucstring CConfiguration::getValue(const string &varName, const ucstring &defaultValue)
{
	if (ConfigFile.exists(varName)) return ucstring::makeFromUtf8(ConfigFile.getVar(varName).asString());
	CConfigFile::CVar varToCopy;
	varToCopy.forceAsString(defaultValue.toUtf8());
	ConfigFile.insertVar(varName, varToCopy);
	return defaultValue;
}

bool CConfiguration::getValue(const string &varName, bool defaultValue)
{
	if (ConfigFile.exists(varName)) return ConfigFile.getVar(varName).asBool();
	CConfigFile::CVar varToCopy;
	varToCopy.forceAsInt(defaultValue ? 1 : 0);
	ConfigFile.insertVar(varName, varToCopy);
	return defaultValue;
}

CRGBA CConfiguration::getValue(const string &varName, const CRGBA &defaultValue)
{
	if (ConfigFile.exists(varName))
	{
		return getValue(ConfigFile.getVar(varName), defaultValue);
	}
	else
	{
		// create a new value only if one doesn't exist
		CConfigFile::CVar varToCopy;
		varToCopy.forceAsInt(defaultValue.R);
		varToCopy.setAsInt(defaultValue.G, 1);
		varToCopy.setAsInt(defaultValue.B, 2);
		varToCopy.setAsInt(defaultValue.A, 3);
		ConfigFile.insertVar(varName, varToCopy);
	}
	return defaultValue;
}

CRGBA CConfiguration::getValue(const CConfigFile::CVar &var, const CRGBA &defaultValue)
{
	if (var.size() >= 3)
	{
		if (var.size() > 4)
			nlwarning("RGBA value in config value '%s' is too long, ignoring unused values");
		return CRGBA((uint8)var.asInt(0), (uint8)var.asInt(1), (uint8)var.asInt(2), var.size() >= 4 ? (uint8)var.asInt(3) : 255);
	}
	nlwarning("Invalid RGBA value in config value '%s', reverting to default { %i, %i, %i, %i }", var.Name.c_str(), (sint)defaultValue.R, (sint)defaultValue.G, (sint)defaultValue.B, (sint)defaultValue.A);
	return defaultValue;
}

void CConfiguration::cbConfigCallback(NLMISC::CConfigFile::CVar &var)
{
	Modules::config().ConfigCallbacks[var.Name](var);
}

void CConfiguration::cfcbSearchPaths(NLMISC::CConfigFile::CVar &var)
{
	uint varsize = var.size();
	for (uint i = 0; i < varsize; ++i)
		CPath::addSearchPath(var.asString(i), false, false);
}

} /* namespace NLQT */