/*
 * Copyright (C) 
 * Copyright (C) 
 *
 * 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 2 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 "Config.h"
#include "Errors.h"

// Defined here as it must not be exposed to end-users.
bool ConfigMgr::GetValueHelper(const char* name, ACE_TString &result)
{
    GuardType guard(_configLock);

    if (_config.get() == 0)
        return false;

    ACE_TString section_name;
    ACE_Configuration_Section_Key section_key;
    const ACE_Configuration_Section_Key &root_key = _config->root_section();

    int i = 0;
    while (_config->enumerate_sections(root_key, i, section_name) == 0)
    {
        _config->open_section(root_key, section_name.c_str(), 0, section_key);
        if (_config->get_string_value(section_key, name, result) == 0)
            return true;
        ++i;
    }

    return false;
}

bool ConfigMgr::LoadInitial(char const* file)
{
    ASSERT(file);

    GuardType guard(_configLock);

    _config.reset(new ACE_Configuration_Heap());
    if (_config->open() == 0)
        if (LoadData(file))
            return true;

    _config.reset();
    return false;
}

bool ConfigMgr::LoadMore(char const* file)
{
    ASSERT(file);
    ASSERT(_config);

    GuardType guard(_configLock);

    return LoadData(file);
}

bool ConfigMgr::Reload()
{
    for(std::vector<std::string>::iterator it = _confFiles.begin(); it != _confFiles.end(); ++it) {
        if (it==_confFiles.begin()) {
            if (!LoadInitial((*it).c_str()))
                return false;
        } else {
            if (!LoadMore((*it).c_str()))
                return false;
        }
    }

    return true;
}

bool ConfigMgr::LoadData(char const* file)
{
    if(std::find(_confFiles.begin(), _confFiles.end(), file) == _confFiles.end()) {
        _confFiles.push_back(file);
    }

    ACE_Ini_ImpExp config_importer(*_config.get());
    if (config_importer.import_config(file) == 0)
        return true;

    return false;
}

std::string ConfigMgr::GetStringDefault(const char* name, const std::string &def)
{
    ACE_TString val;
    return GetValueHelper(name, val) ? val.c_str() : def;
}

bool ConfigMgr::GetBoolDefault(const char* name, bool def)
{
    ACE_TString val;

    if (!GetValueHelper(name, val))
        return def;

    return (val == "true" || val == "TRUE" || val == "yes" || val == "YES" ||
        val == "1");
}

int ConfigMgr::GetIntDefault(const char* name, int def)
{
    ACE_TString val;
    return GetValueHelper(name, val) ? atoi(val.c_str()) : def;
}

float ConfigMgr::GetFloatDefault(const char* name, float def)
{
    ACE_TString val;
    return GetValueHelper(name, val) ? (float)atof(val.c_str()) : def;
}

std::list<std::string> ConfigMgr::GetKeysByString(std::string const& name)
{
    GuardType guard(_configLock);

    std::list<std::string> keys;
    if (_config.get() == 0)
        return keys;

    ACE_TString section_name;
    ACE_Configuration_Section_Key section_key;
    const ACE_Configuration_Section_Key &root_key = _config->root_section();

    int i = 0;
    while (_config->enumerate_sections(root_key, i++, section_name) == 0)
    {
        _config->open_section(root_key, section_name.c_str(), 0, section_key);

        ACE_TString key_name;
        ACE_Configuration::VALUETYPE type;
        int j = 0;
        while (_config->enumerate_values(section_key, j++, key_name, type) == 0)
        {
            std::string temp = key_name.c_str();

            if (!temp.find(name))
                keys.push_back(temp);
        }
    }

    return keys;
}