/*
* Copyright (C) 2010 Robin H.Johnson, Ovechko Kostyantyn <fastinetserver@gmail.com>.
*
* Project: IDFetch.
* Developer: Ovechko Kostyantyn Olexandrovich (Kharkiv State Technical University of Construction and Architecture, Ukraine).
* Mentor: Robin H. Johnson (Gentoo Linux: Developer, Trustee & Infrastructure Lead).
* Mentoring organization: Gentoo Linux.
* Sponsored by GSOC 2010.
*
* This file is part of Segget.
*
* Segget 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* Segget 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 Segget; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "config.h"

void Tconfig::load_settings_from_config_file(){
	try{
		ifstream file;
		file.exceptions (ifstream::failbit | ifstream::badbit);
		try{
			file.open(config_file_name.c_str());
		}
		catch(...){
			merror("Error opening settings file: "+config_file_name+". Default settings will be used. Check if config file: "+config_file_name+" exists and segget has rights to access it.");
			return;
		}
		try{
			//processing file
			string line;
			string name;
			string value;
			string inSection;
			int posEqual;
			while (not(file.eof())) {
				getline(file,line);
				if (! line.length()) continue;
				if (line[0] == '#') continue;
				if (line[0] == ';') continue;
				line=noupper(line);
			if (line[0] == '[') {
					inSection=trim(line.substr(1,line.find(']')-1));
					continue;
				}
				posEqual=line.find('=');
				name  = trim(line.substr(0,posEqual));
				value = trim(line.substr(posEqual+1));
				content_[inSection+'/'+name]=noupper(value);
			}
		}catch(ifstream::failure e){
			if (!file.eof()){
				merror("Settings file: "+config_file_name+" was opened, but an error occured while reading it.");
				return;
			}
		}catch(...){
			merror("Settings file: "+config_file_name+" was opened, but an error occured while reading settings from it.");
		}
	}catch(...){
		merror("Error in config.cpp: load_settings_from_config_file()");
	}
}

int Tconfig::set(string const& section, string const& entry, string &dst) const {
	try{
		map<string,string>::const_iterator ci = content_.find(section + '/' + entry);
		if (ci == content_.end()){
			merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+" has not been set.");
			merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+dst+". Default value forced.");
			return 1;
		}
		else{
			dst=ci->second;
			merror("Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+dst);
			return 0;
		}
	}catch(...){
		merror("Error in config.cpp: set(string &dst, string const& section, string const& entry)");
		return 1;
	}
}
int Tconfig::set(string const& section, string const& entry, ulong &dst, uint const& min_limit, uint const& max_limit) const {
	try{
		uint return_value;
		map<string,string>::const_iterator ci = content_.find(section + '/' + entry);
		if (ci == content_.end()){
			merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+" has not been set.");
			merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(dst)+". Default value forced.");
			return 1;
		}
		else{
			return_value=atoi(ci->second.c_str());
			if (return_value==0)
				if (toString(return_value)!=ci->second){
					merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry
							+" must have an integer value in range from "+toString(min_limit)
							+" to "+toString(max_limit)
							+". Can't convert "+ci->second
							+" to integer. ");
					merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(dst)+". Default value forced.");
					return 1;
				}
			if ((return_value>=min_limit) and (return_value<=max_limit)){
				//everything is ok
				merror("Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(return_value));
				dst=return_value;
				return 0;
			}else{
				merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry
					+" must have an integer value in range from "+toString(min_limit)
					+" to "+toString(max_limit)+".");
					merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(dst)+". Default value forced.");
				return 1;
			}
		}
	}catch(...){
		merror("Error in config.cpp: set(ulong &dst, string const& section, string const& entry, uint const& min_limit, uint const& max_limit)");
		return 1;
	}
}

int Tconfig::set(string const& section, string const& entry, bool &dst) const {
	try{
		uint return_value;
		map<std::string,string>::const_iterator ci = content_.find(section + '/' + entry);
		if (ci == content_.end()){
			merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+" has not been set.");
			merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(dst)+". Default value forced.");
			return 1;
		}
		else{
			return_value=atoi(ci->second.c_str());
			if (return_value==0)
				if (toString(return_value)!=ci->second){
					merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry
							+" must have a boolean value: 0 or 1"
							+". Can't convert "+ci->second
							+" to 0 or 1. ");
					merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(dst)+". Default value forced.");
					return 1;
				}
			if ((return_value==0) or (return_value==1)){
				//everything is ok
				merror("Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(return_value));
				dst=return_value;
				return 0;
			}else{
				merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry
					+" must have a boolean value: 0 or 1");
				merror("! Settings in file:"+config_file_name+" ["+section+"]."+entry+"="+toString(dst)+". Default value forced.");
				return 1;
			}
		}
	}catch(...){
		merror("Error in config.cpp: set(bool &dst, string const& section, string const& entry)");
		return 1;
	}
}

void Tconfig::clear(){
	try{
		content_.clear();
	}catch(...){
		merror("Error in config.cpp: clear()");
	}
}