/*
 * Copyright (c) 2009-2013 Juli Mallett. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <config/config.h>

////////////////////////////////////////////////////////////////////////////////
//                                                                            //
// File:           config.cc                                                  //
// Description:    main configuration parser                                  //
// Project:        WANProxy XTech                                             //
// Adapted by:     Andreu Vidal Bramfeld-Software                             //
// Last modified:  2015-04-01                                                 //
//                                                                            //
////////////////////////////////////////////////////////////////////////////////

bool
Config::activate(const std::string& oname)
{
	if (object_map_.find(oname) == object_map_.end()) {
		ERROR(log_) << "Object (" << oname << ") can not be activated as it does not exist.";
		return (false);
	}

	ConfigObject *co = object_map_[oname];
	return (co->activate());
}

bool
Config::create(const std::string& cname, const std::string& oname)
{
	if (class_map_.find(cname) == class_map_.end()) {
		ERROR(log_) << "Class (" << cname << ") not present.";
		return (false);
	}
	if (object_map_.find(oname) != object_map_.end()) {
		ERROR(log_) << "Refusing to create object (" << oname << ") twice.";
		return (false);
	}

	ConfigClass *cc = class_map_[cname];

	object_map_[oname] = new ConfigObject(this, oname, cc, cc->allocate());

	return (true);
}

bool
Config::set(const std::string& oname, const std::string& mname,
	    const std::string& vstr)
{
	if (object_map_.find(oname) == object_map_.end()) {
		ERROR(log_) << "Can not set member value on object (" << oname << ") that does not exist.";
		return (false);
	}

	ConfigObject *co = object_map_[oname];

#if 0
	ConfigType *ct = cc->member(mname);
	if (ct == NULL) {
		ERROR(log_) << "No such member (" << mname << ") in object (" << oname << ")";
		return (false);
	}
#endif

	if (vstr[0] == '$') {
		std::string::const_iterator dot;

		dot = std::find(vstr.begin(), vstr.end(), '.');

		std::string ooname(vstr.begin() + 1, dot);
		std::string omname(dot + 1, vstr.end());

		if (ooname == "" || omname == "") {
			ERROR(log_) << "Refernece to invalid object (" << ooname << ") or member (" << omname << ") by name.";
			return (false);
		}

		if (object_map_.find(ooname) == object_map_.end()) {
			ERROR(log_) << "Reference to non-existant object (" << ooname << ")";
			return (false);
		}

		ConfigObject *oco = object_map_[ooname];

		object_field_string_map_t::const_iterator fsit;
		fsit = field_strings_map_.find(object_field_string_map_t::key_type(oco, omname));
		if (fsit == field_strings_map_.end()) {
			ERROR(log_) << "Reference to unset member (" << omname << ") in object (" << ooname << ")";
			return (false);
		}

		return (set(oname, mname, fsit->second));
	}

	if (!co->set(mname, vstr)) {
		ERROR(log_) << "Member (" << mname << ") in object (" << oname << ") could not be set.";
		return (false);
	}

	field_strings_map_[object_field_string_map_t::key_type(co, mname)] = vstr;

	return (true);
}

void
Config::import(ConfigClass *cc)
{
	if (class_map_.find(cc->name_) != class_map_.end())
		return;

	class_map_[cc->name_] = cc;
}

void
Config::marshall(ConfigExporter *exp) const
{
	std::map<std::string, ConfigObject *>::const_iterator it;

	for (it = object_map_.begin(); it != object_map_.end(); ++it)
		exp->object(it->second, it->first);
}