/*
   core/module.cc
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#include "auxiliary/functions.h"
#include "core/module.h"
#include "sys/sys.h"

namespace core
{

/*-- static functions ----------------------------------------------*/

Module *Module::module_preload = 0;
Module *Module::module_active = 0;

Module::Registry Module::module_registry;

Module *Module::find(const std::string &label)
{
	Registry::iterator it = module_registry.find(label);
	if (it == module_registry.end())
		return 0;
	else
		return (*it).second;
}

Module *Module::find(const char *label)
{
	return(find(std::string(label)));
}

Module *Module::add(Module *module)
{
	Module *m = find(module->label());
	if (m) {
		con_warn << "module '" << module->label() << "' already registered!" << std::endl;
		delete module;
		return 0;
	}

	module_registry[module->label()] = module;

	if (!module_preload) {
		module_preload = module;
	}
	con_debug << "  " << module->label() << " " << module->name() << std::endl;

	return module;
}

Module *Module::load(const char *label)
{
	if (!label)
		return 0;

	Module *module = find(label);
	if (!module) {
		con_warn << "Could not find module '" << label << "'" << std::endl;
		return 0;
	}

	con_print << "  module " << module->label() << " " << module->name() << std::endl;
	module_preload = module;
	return module;
}

void Module::clear()
{
	for (Registry::iterator it = module_registry.begin(); it != module_registry.end(); it++) {
		Module *module = (*it).second;
		con_print << "  " << module->label() << " " << module->name() << std::endl;
	}
	
	module_registry.clear();
	module_preload = 0;
}

void Module::list()
{
	for (Registry::iterator it = module_registry.begin(); it != module_registry.end(); it++) {
		Module *module = (*it).second;
		con_print << "  " << module->label() << " " << module->name() << std::endl;

	}
	con_print << module_registry.size() << " registered game " << aux::plural("modules", module_registry.size()) << std::endl;
}

/*-- instance functions --------------------------------------------*/

Module::Module(const char *label, const char *name, bool interactive) :
	module_label(label), module_name(name)
{
	module_running = false;
	module_interactive = interactive;
}

Module::~Module()
{
	module_running = false;
	module_name.clear();
}

void Module::run()
{
	module_active = this;
	module_running = true;

	init();
}

void Module::terminate()
{
	shutdown();
	module_running = false;
	module_active = 0;
}

void Module::abort()
{
	module_running = false;
	module_active = 0;
}

}