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

#include <vector>

#include "auxiliary/functions.h"
#include "core/gameserver.h"
#include "filesystem/filesystem.h"
#include "filesystem/inifile.h"
#include "game/game.h"
#include "game/ship.h"
#include "game/star.h"
#include "math/mathlib.h"
#include "sys/sys.h"

namespace game
{

ShipModel		*default_shipmodel;
/*----- engine game functions ------------------------------------- */

/// list the ship model registry
void func_list_ship(std::string const &args)
{
	ShipModel::list();
}

/// a player joins the game
void func_join(core::Player *player, std::string const &args)
{
	if (player->control())
		return;

	player->player_control = new Ship(player, default_shipmodel);
	player->control()->entity_color = player->color();
	
	std::string message("^B");
	message.append(player->name());
	message.append("^B joins the game.");
	core::server()->broadcast(message);

	player->player_dirty = true;
}

/// a player joins the spectators
void func_spectate(core::Player *player, std::string const &args)
{
	if (!player->player_control)
		return;

	std::string message("^B");
	message.append(player->name());
	message.append("^B spectates.");
	core::server()->broadcast(message);

	if (player->control()) {
		// player has only ship for now
		player->player_control->die();
		player->player_control = 0;
	}

	player->player_dirty = true;
}

/// a player buys a ship
void func_buy(core::Player *player, std::string const &args)
{
	
	std::string shipname;
	std::string helpstr;
	std::istringstream is(args);
	is >> shipname;

	ShipModel *shipmodel = 0;
	for (std::list<ShipModel *>::iterator smit = ShipModel::registry.begin(); smit != ShipModel::registry.end(); smit++) {
		if (shipname == (*smit)->modelname()) {
			shipmodel = (*smit);
			break;
		}

		if (helpstr.size())
			helpstr.append("^N|^B");
		helpstr.append((*smit)->modelname());
	}

	if (shipmodel) {
		// player has only ship for now
		if (player->control()) {
			player->player_control->die();
			player->player_control = 0;
		}

		player->player_control = new Ship(player, shipmodel);
		player->control()->entity_color = player->color();

		core::server()->broadcast("^N" + player->name() + " ^Bpurchased " + aux::article(shipmodel->name()));
		player->player_dirty = true;
	} else {
		core::server()->send(player, "Usage: buy <" + helpstr + "^N>");
	}
}
/*----- Game ------------------------------------------------------ */

Game::Game() : core::Module("Project::OSiRiON")
{
}

Game::~Game()
{
}

void Game::init()
{
	using math::Vector3f;
	using math::Color;

	module_running = false;

	ShipModel::clear();

	// setup the game world
	filesystem::IniFile worldini;
	worldini.open("world");

	if (!worldini.is_open()) {
		con_error << "Could not open ini/world.ini!" << std::endl;
		abort();
		return;
	}

	Star *star = 0;
	core::Entity *entity = 0;

	float direction;
	float pitch;
	float roll;

	while (worldini.getline()) {
		if (worldini.got_key()) {
			if (worldini.section().compare("star") == 0) {
				if (worldini.got_key_string("name", star->entity_name))
					continue;
				else if (worldini.got_key_string("model", star->entity_modelname))
					 continue;
				else if (worldini.got_key_vector3f("location", star->entity_location ))
					continue;
				else if (worldini.got_key_color("color", star->entity_color))
					continue;
				else
					con_warn << worldini.name() << " unknown key '" << worldini.key() << "' at line " << worldini.line() << std::endl;

			} else if (worldini.section().compare("entity") == 0) {

				std::string shapename;

				if (worldini.got_key_string("shape", shapename)) {
					if (shapename.compare("axis") == 0) {
						entity->entity_shape = core::Entity::Axis;
					} else if (shapename.compare("cube") == 0) {
						entity->entity_shape = core::Entity::Cube;
					} else if (shapename.compare("diamond") == 0) {
						entity->entity_shape = core::Entity::Diamond;
					} else if (shapename.compare("sphere") == 0) {
						entity->entity_shape = core::Entity::Sphere;
					} else {
						con_warn << worldini.name() << " unknown shape '" << shapename << "' at line " << worldini.line() << std::endl;
					}
					continue;
				} else	if (worldini.got_key_string("name", entity->entity_name))
					continue;
				else if (worldini.got_key_string("model", entity->entity_modelname))
					continue;
				else if (worldini.got_key_angle("direction", direction)) {
					entity->axis().change_direction(direction);
					continue;
				} else if (worldini.got_key_angle("pitch", pitch)) {
					entity->axis().change_pitch(pitch);
					continue;
				} else if (worldini.got_key_angle("roll", roll)) {
					entity->axis().change_roll(roll);
					continue;
				} else if (worldini.got_key_angle("radius", entity->entity_radius))
					continue;
				else if (worldini.got_key_vector3f("location", entity->entity_location))
					continue;
				else if (worldini.got_key_color("color", entity->entity_color))
					continue;
				else
					con_warn << worldini.name() << " unknown key '" << worldini.key() << "' at line " << worldini.line() << std::endl;
			}
		} else if (worldini.got_section("star")) {
			star = new Star();

		} else if (worldini.got_section("entity")) {
			entity = new core::Entity();
			entity->entity_flags += core::Entity::Static;

		} else if (worldini.got_section()) {
			con_warn << worldini.name() << " unknown section '" << worldini.section() << "' at line " << worldini.line() << std::endl;
		}
	}
	worldini.close();

	// read ship model specifications
	// note: 
	// do not reuse the previous IniFile instance, some gcc versions do not like it
	filesystem::IniFile shipsini;
	shipsini.open("ships");
	if (!shipsini.is_open()) {
		con_error << "Could not open ini/ships.ini!" << std::endl;
		abort();
		return;
	}

	ShipModel *shipmodel = 0;
	default_shipmodel = 0;

	while (shipsini.getline()) {
		if (shipsini.got_key()) {
			if (shipsini.section().compare("ship") == 0) {

				if (shipsini.got_key_string("name",shipmodel->shipmodel_name)) {
					 continue;
				} else if (shipsini.got_key_string("model", shipmodel->shipmodel_modelname)) {
					continue;
				} else if (shipsini.got_key("default")) {
					default_shipmodel = shipmodel;
					continue;
				} else if (shipsini.got_key_float("acceleration", shipmodel->shipmodel_acceleration)) {
					continue;
				} else if (shipsini.got_key_float("maxspeed", shipmodel->shipmodel_maxspeed)) {
					continue;
				} else if (shipsini.got_key_float("turnspeed", shipmodel->shipmodel_turnspeed)) {
					continue;
				} else {
					con_warn << shipsini.name() << " unknown key '" << shipsini.key() << "' at line " << shipsini.line() << std::endl;
				}
			}
		} else if (shipsini.got_section("ship")) {
			shipmodel = new ShipModel();

			if (!default_shipmodel)
				default_shipmodel = shipmodel; 

		} else if (shipsini.got_section()) {
			con_warn << shipsini.name() << " unknown section '" << shipsini.section() << "' at line " << shipsini.line() << std::endl;
		}
	}
	shipsini.close();

	if (!default_shipmodel) {
		con_error << "No default ship model in ini/ships.ini!\n";
		return;
	}

	// add engine game functions
	core::Func::add("buy", (core::GameFuncPtr) func_buy);
	core::Func::add("join", (core::GameFuncPtr) func_join);
	core::Func::add("spectate", (core::GameFuncPtr) func_spectate);

	// add engine core functions
	core::Func::add("list_ship", (core::FuncPtr) func_list_ship);

	// add engine game variables
	core::Cvar::set("g_testgamevariable", "1", core::Cvar::Game);
	core::Cvar::set("g_name", name().c_str(), core::Cvar::Game | core::Cvar::ReadOnly);
	
	// indicate the module is ready to run frames
	module_running = true;
}

void Game::shutdown()
{
	// game functions are automaticly removed

	// remove engine core functions
	core::Func::remove("list_ship");

	ShipModel::clear();
	module_running = false;
}

void Game::frame(float seconds)
{
	if (!running())
		return;
}

void Game::player_connect(core::Player *player)
{
	std::string args;
	func_spectate(player, args);
}

void Game::player_disconnect(core::Player *player)
{
	if (player->control()) {
		// player has only one ship for now
		player->control()->die();
		player->player_control = 0;
	}
}

} // namespace game