websocket/chatcommand_startsimplegame.cpp

#include "chatcommand_startsimplegame.h"
#include "websocket.h"
#include "datastring.h"
#include "parameters.h"
#include "stringbuilder.h"
#include "message.h"
#include "Debug.h"
#include <inttypes.h>
#include "simplechatgame.h"

//  startsimplegame(messageid,gameid,username,gamedata)
// Starts a simple game.
// Returns simplegame(messageid,gameid) or error(message,messageid);

bool chatcommand_startsimplegame::processmessage(char first_letter,message *received_message,chatclient *client)
{
	if ((first_letter != 's') 
		|| (received_message->actual_message.substr(0,16)!="startsimplegame(")) {
		return false;
	}	
	
	Debug debug(__FILE__,__func__,__LINE__);
	message *new_message;
	datastring method_parameters;
	parameters parameters_parsed;
	bool parameter_success = true;
	int64_t messageid;
	datastring gameid;
	datastring username;
	datastring gamedata;
	simplechatgame *game;
	datastring error_message;
	biglist_item<simplechatgame *> *game_search;
	biglist_item<simplechatgameuser *> *user;	
	
	
	debug = __LINE__;
	method_parameters = received_message->actual_message.substr(16,received_message->actual_message.length-17);
	method_parameters.null_terminate(); // Used to comply with snprintf.
	parameters_parsed.long_parameter(method_parameters,parameter_success);
	parameters_parsed.string_parameter(method_parameters,parameter_success);
	parameters_parsed.string_parameter(method_parameters,parameter_success);
	parameters_parsed.string_parameter(method_parameters,parameter_success);
		
	debug = __LINE__;
	if (parameter_success) {
		// Give the parameters nice names.
		debug = __LINE__;
		messageid = parameters_parsed.long_parameters[0];
		gameid = parameters_parsed.string_parameters[1];
		username = parameters_parsed.string_parameters[2];		
		gamedata = parameters_parsed.string_parameters[3];
	
		debug = __LINE__;
		// Look to see if this gameid is already used.
		do { // loop only once
			// Look for this game.
			if (username.length == 0) {
				error_message = "A username is required.";
				error(client,error_message,messageid);
				return true;
			}
			game_search = the_websocket->find_simple_game(gameid);
			debug = __LINE__;
			if (game_search != nullptr) {
				error_message = "That gameid is already used.";
				error(client,error_message,messageid);
				return true;
			}
			debug = __LINE__;
			// Create a new game object.
			game = new simplechatgame();
			if (game == nullptr) {
				break;
			}
			debug = __LINE__;
			game->gameid = new datablock(gameid);
			if (game->gameid == nullptr) {
				delete game;
				break;
			}
			if (gamedata.length > 0) {
				game->gamedata = new datablock(gamedata);
				if (game->gamedata == nullptr) {
					delete game;
					break;
				}
			}
			user = game->add_user(client,username);
			if (user == nullptr) {
				delete game;
				break;
			}
			// Add the game to the list of games.
			game_search = the_websocket->add_simple_game(game);
			if (game_search == nullptr) {
				delete game;
				break;
			}
			debug = __LINE__;
			new_message = simplegamestarted(messageid,gameid);
			client->push_message(&new_message);
			return true;
		} while (false);
		error_message = "Out of memory.";
		error(client,error_message,messageid);
	} else {
		debug = __LINE__;
		parameters_not_correct(client,received_message);
	}
	debug = __LINE__;
	return true;
}