/*
   Copyright (C) 2009 - 2018 by Yurii Chernyi <terraninfo@terraninfo.net>
   Part of the Battle for Wesnoth Project https://www.wesnoth.org/

   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.

   See the COPYING file for more details.
*/

/**
 * CPP AI Support engine - creating specific ai components from config
 * @file
 */

#include "ai/composite/ai.hpp"
#include "ai/composite/aspect.hpp"
#include "ai/composite/goal.hpp"
#include "ai/composite/rca.hpp"
#include "ai/composite/stage.hpp"
#include "ai/default/engine_cpp.hpp"
#include "log.hpp"

namespace ai {

static lg::log_domain log_ai_engine_cpp("ai/engine/cpp");
#define DBG_AI_ENGINE_CPP LOG_STREAM(debug, log_ai_engine_cpp)
#define LOG_AI_ENGINE_CPP LOG_STREAM(info, log_ai_engine_cpp)
#define ERR_AI_ENGINE_CPP LOG_STREAM(err, log_ai_engine_cpp)

engine_cpp::engine_cpp( readonly_context &context, const config &cfg )
	: engine(context,cfg)
{
	name_ = "cpp";
}

engine_cpp::~engine_cpp()
{
}


void engine_cpp::do_parse_aspect_from_config( const config &cfg, const std::string &id, std::back_insert_iterator<std::vector< aspect_ptr >> b )
{
	const std::string aspect_factory_key = id+"*"+cfg["name"];//@note: hack which combines aspect id and name to get the std::string key of the aspect factory
	aspect_factory::factory_map::iterator f = aspect_factory::get_list().find(aspect_factory_key);
	if (f == aspect_factory::get_list().end()){
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNKNOWN aspect["<<aspect_factory_key<<"]" << std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	aspect_ptr new_aspect = f->second->get_new_instance(ai_,cfg,id);
	if (!new_aspect) {
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNABLE TO CREATE aspect, key=["<<aspect_factory_key<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	*b = new_aspect;
}


void engine_cpp::do_parse_candidate_action_from_config( rca_context &context, const config &cfg, std::back_insert_iterator<std::vector< candidate_action_ptr >> b ){
	candidate_action_factory::factory_map::iterator f = candidate_action_factory::get_list().find(cfg["name"]);
	if (f == candidate_action_factory::get_list().end()){
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNKNOWN candidate_action["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	candidate_action_ptr new_candidate_action = f->second->get_new_instance(context,cfg);
	if (!new_candidate_action) {
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNABLE TO CREATE candidate_action["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	*b = new_candidate_action;

}

void engine_cpp::do_parse_stage_from_config( ai_context &context, const config &cfg, std::back_insert_iterator<std::vector< stage_ptr >> b )
{
	stage_factory::factory_map::iterator f = stage_factory::get_list().find(cfg["name"]);
	if (f == stage_factory::get_list().end()){
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNKNOWN stage["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	stage_ptr new_stage = f->second->get_new_instance(context,cfg);
	if (!new_stage) {
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNABLE TO CREATE stage["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	*b = new_stage;
}


void engine_cpp::do_parse_goal_from_config(const config &cfg, std::back_insert_iterator<std::vector< goal_ptr >> b )
{
	goal_factory::factory_map::iterator f = goal_factory::get_list().find(cfg["name"]);
	if (f == goal_factory::get_list().end()){
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNKNOWN goal["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	goal_ptr new_goal = f->second->get_new_instance(ai_,cfg);
	if (!new_goal || !new_goal->ok()) {
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNABLE TO CREATE goal["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	*b = new_goal;
}


void engine_cpp::do_parse_engine_from_config(const config &cfg, std::back_insert_iterator<std::vector< engine_ptr >> b )
{
	engine_factory::factory_map::iterator f = engine_factory::get_list().find(cfg["name"]);
	if (f == engine_factory::get_list().end()){
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNKNOWN engine["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	engine_ptr new_engine = f->second->get_new_instance(ai_,cfg);
	if (!new_engine) {
		ERR_AI_ENGINE_CPP << "side "<<ai_.get_side()<< " : UNABLE TO CREATE engine["<<cfg["name"]<<"]"<< std::endl;
		DBG_AI_ENGINE_CPP << "config snippet contains: " << std::endl << cfg << std::endl;
		return;
	}
	*b = new_engine;
}


} //end of namespace ai
