/*
 * Copyright (C) 2021  Christopher J. Howard
 *
 * This file is part of Antkeeper source code.
 *
 * Antkeeper source code 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 3 of the License, or
 * (at your option) any later version.
 *
 * Antkeeper source code 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 Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "game/load.hpp"
#include "application.hpp"
#include "debug/logger.hpp"
#include "resources/json.hpp"
#include "resources/resource-manager.hpp"
#include "render/model.hpp"
#include "render/material.hpp"
#include "render/passes/sky-pass.hpp"
#include "render/passes/ground-pass.hpp"
#include "entity/systems/astronomy.hpp"
#include <fstream>

namespace game {
namespace load {

void biome(game::context& ctx, const std::filesystem::path& path)
{
	ctx.logger->push_task("Loading biome from \"" + path.string() + "\"");
	try
	{
		json* data = ctx.resource_manager->load<json>(path);
		
		// Load location
		if (auto location = data->find("location"); location != data->end())
		{
			double elevation = 0.0;
			double latitude = 0.0;
			double longitude = 0.0;
			
			if (auto location_ele = location->find("elevation"); location_ele != location->end())
				elevation = location_ele->get<double>();
			else
				ctx.logger->warning("Biome elevation undefined");
			
			if (auto location_lat = location->find("latitude"); location_lat != location->end())
				latitude = math::radians<double>(location_lat->get<double>());
			else
				ctx.logger->warning("Biome latitude undefined");
			
			if (auto location_lon = location->find("longitude"); location_lon != location->end())
				longitude = math::radians<double>(location_lon->get<double>());
			else
				ctx.logger->warning("Biome longitude undefined");
			
			ctx.astronomy_system->set_observer_location({elevation, latitude, longitude});
		}
		else
		{
			ctx.logger->warning("Biome location undefined");
		}
		
		// Setup sky
		ctx.sky_pass->set_sky_model(ctx.resource_manager->load<render::model>("celestial-hemisphere.mdl"));
		
		// Load terrain
		if (auto terrain = data->find("terrain"); terrain != data->end())
		{
			if (auto material = terrain->find("material"); material != terrain->end())
			{
				render::model* terrestrial_hemisphere_model = ctx.resource_manager->load<render::model>("terrestrial-hemisphere.mdl");
				(*terrestrial_hemisphere_model->get_groups())[0]->set_material(ctx.resource_manager->load<render::material>(material->get<std::string>()));
				ctx.ground_pass->set_ground_model(terrestrial_hemisphere_model);
			}
			else
			{
				ctx.logger->warning("Biome terrain material undefined");
			}
		}
		else
		{
			ctx.logger->warning("Biome terrain undefined");
		}
	}
	catch (...)
	{
		ctx.logger->pop_task(EXIT_FAILURE);
	}
	ctx.logger->pop_task(EXIT_SUCCESS);
}

void colony(game::context& ctx, const std::filesystem::path& path)
{
	ctx.logger->push_task("Loading colony from \"" + path.string() + "\"");
	try
	{
		json* data = ctx.resource_manager->load<json>(path);
		
	}
	catch (...)
	{
		ctx.logger->pop_task(EXIT_FAILURE);
	}
	ctx.logger->pop_task(EXIT_SUCCESS);
}

} // namespace load
} // namespace game