/// <summary>
/// Takes a valid game ID and process Boggle game logic and returns a score based on word evaluation.
/// </summary>
/// <param name="games"></param>
/// <param name="GameID"></param>
/// <returns></returns>
public PlayResponse PlayWord(PlayRequest games, string GamedID, out HttpStatusCode status)
{
string word = games.Word;
string trimmed;
// Various types of condition checks for request object, played word and game ID
if (word == null || (trimmed = word.Trim()).Length == 0 || games.UserToken == null)
{
status = Forbidden;
return(null);
}
if (!Int32.TryParse(GamedID, out int id))
{
status = Forbidden;
return(null);
}
PlayResponse response = new PlayResponse();
using (SqlConnection conn = new SqlConnection(BoggleDB))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
if (!IsUserTokenValid(games.UserToken, conn, trans) || id < 1 || id > GetRecentGameID(conn, trans) ||
!IsPlayerInGame(games.UserToken, conn, trans, id))
{
status = Forbidden;
return(null);
}
if (ComputeTimeLeft(id, conn, trans) < 1)
{
status = Conflict;
return(null);
}
// If everything is fine at this point, insert the played word into DB
using (SqlCommand comm = new SqlCommand("INSERT INTO Words (Word, Player, GameID, Score) VALUES (@Word, @Player, @GameID, @Score)", conn, trans))
{
BoggleBoard board = FetchBoard(id, conn, trans);
List <WordsPlayed> playedList = FetchWords(games.UserToken, id, conn, trans);
// Compute score with gameboard and played word list
int score = ComputeScore(trimmed, board, playedList);
comm.Parameters.AddWithValue("@Word", trimmed);
comm.Parameters.AddWithValue("@Player", games.UserToken);
comm.Parameters.AddWithValue("@GameID", id);
comm.Parameters.AddWithValue("@Score", score);
// Compose response message
response.Score = score;
comm.ExecuteNonQuery();
}
trans.Commit();
}
}
status = OK;
return(response);
}
/// <summary>
/// Handles the request after all relevant info has been parsed out
/// </summary>
/// <param name="line"></param>
/// <param name="p"></param>
private void ProcessRequest(string line, object p = null)
{
String result = "";
// this handles 'make user' request
if (makeUserPattern.IsMatch(firstLine))
{
UserNickames name = JsonConvert.DeserializeObject <UserNickames>(line);
dynamic user = new BoggleService().Register(name, out HttpStatusCode status);
result = ComposeResponse(user, status);
}
// this handles 'join game' request
else if (joinGamePattern.IsMatch(firstLine))
{
GameRequest request = JsonConvert.DeserializeObject <GameRequest>(line);
JoinResponse response = new BoggleService().Join(request, out HttpStatusCode status);
result = ComposeResponse(response, status);
}
// this handles 'update game status' with brief parameter on or off
else if (updateNoBriefPattern.IsMatch(firstLine) || updateBriefPattern.IsMatch(firstLine))
{
Match m;
string gameID = "";
string briefParam = null;
string brief = "";
// if brief parameter is not provided
if (updateNoBriefPattern.Match(firstLine).Success)
{
m = updateNoBriefPattern.Match(firstLine);
gameID = m.Groups[1].ToString();
}
// or not provided, parse brief parameter
if (updateBriefPattern.Match(firstLine).Success)
{
m = updateBriefPattern.Match(firstLine);
// game ID is embedded in first group of regex pattern
gameID = m.Groups[1].ToString();
// brief parameter is embedded in second group of regex pattern
briefParam = m.Groups[2].ToString();
// remove irrelevent strings
brief = briefParam.Substring(7);
}
GameStatus response;
HttpStatusCode status;
if (briefParam == null)
{
response = new BoggleService().Update(gameID, "No", out status);
}
else
{
response = new BoggleService().Update(gameID, brief, out status);
}
result = ComposeResponse(response, status);
}
// this handles playword request
else if (playWordPattern.IsMatch(firstLine))
{
string gameID = playWordPattern.Match(firstLine).Groups[1].ToString();
PlayRequest request = JsonConvert.DeserializeObject <PlayRequest>(line);
PlayResponse response = new BoggleService().PlayWord(request, gameID, out HttpStatusCode status);
result = ComposeResponse(response, status);
}
// this handles cancel game request
else if (cancelPattern.IsMatch(firstLine))
{
UserObject user = JsonConvert.DeserializeObject <UserObject>(line);
new BoggleService().CancelJoinRequest(user, out HttpStatusCode status);
result = ComposeResponse(null, status);
}
// capturing whatever string requests that does not match any of the above regex patterns
else
{
result = "HTTP/1.1 " + "403" + " Forbidden" + "\r\n\r\n";
}
socket.BeginSend(result, (x, y) => { socket.Shutdown(SocketShutdown.Both); }, null);
}