public override string ToString()
{
StringBuilder sb = new StringBuilder();
// TODO - Rewrite this shit. Use dictionary or something.
// Yes, I know that string interpolation exists, but I dont like it.
sb.AppendFormat(
"levelID={0}&version={1}&user_id={2}&credits={3}&cowboyChance={4}&title={5}&time={6}¬e={7}&min_level={8}&song={9}&gravity={10}&max_time={11}&has_pass={12}&live={13}&items={14}&gameMode={15}&data={16}",
this.Id,
this.Version,
this.UserId,
String.Empty,
this.CowboyChance,
this.Title.ToUrlEncodedString(),
this.SubmittedDate.GetSecondsSinceUnixTime(),
this.Note.ToUrlEncodedString(),
this.MinLevel,
this.Song,
this.Gravity.ToString(StringFormat.DECIMAL_TWO, CultureInfo.InvariantCulture),
this.MaxTime,
!String.IsNullOrEmpty(this.PassHash),
Convert.ToInt32(this.Live),
this.Items,
this.GameMode.GetEnumDescription(),
this.Data);
using (MD5Wrapper md5 = new MD5Wrapper())
{
String hash = md5.GetHashedString(String.Concat(this.Version.ToString(), this.Id.ToString(), sb.ToString(), Pepper.LEVEL_LOAD));
sb.Append(hash);
}
return(sb.ToString());
}
/// <summary>
/// Processes list of levels and returns its string representation ready to be sent to client.
/// </summary>
/// <param name="levels">List of LevelRowDTO.</param>
/// <returns></returns>
public static String GetLevelListString(this IList <LevelRowDTO> levels)
{
if (!levels.Any())
{
return(String.Empty);
}
StringBuilder sb = new StringBuilder();
for (Int32 i = 0; i < levels.Count; i++)
{
LevelRowDTO current = levels[i];
// TODO - Rewrite this shit. Use dictionary or something.
// Yes, I know that string interpolation exists, but I dont like it.
sb.AppendFormat(
"levelID{0}={1}&version{0}={2}&title{0}={3}&rating{0}={4}&playCount{0}={5}&minLevel{0}={6}¬e{0}={7}&userName{0}={8}&group{0}={9}&live{0}={10}&pass{0}={11}&type{0}={12}{13}",
i,
current.LevelId,
current.Version,
current.Title.ToUrlEncodedString(),
current.Rating.ToString(StringFormat.DECIMAL_TWO, CultureInfo.InvariantCulture) ?? String.Empty,
current.PlayCount,
current.MinRank,
current.Note.ToUrlEncodedString(),
current.Username.ToUrlEncodedString(),
current.Group,
Convert.ToInt32(current.IsPublished),
current.HasPass ? StatusMessages.ONE : String.Empty,
current.GameMode.GetEnumDescription().FirstOrDefault() + String.Empty,
(i < levels.Count - 1) ? Separators.AMPERSAND : String.Empty);
}
using (MD5Wrapper md5 = new MD5Wrapper())
{
String hash = md5.GetHashedString(String.Concat(sb.ToString(), Pepper.LEVEL_LIST));
sb.Append(String.Concat("&hash=", hash));
}
return(sb.ToString());
}
public void SaveLevel(Int64 userId, String username, LevelDataDTO levelData, String ipAddress)
{
// TODO - Validation of level data.
// TODO - Consider the difference based approach when saving levels.
if (levelData == null)
{
throw new PR2Exception(ErrorMessages.ERR_NO_LEVEL_DATA);
}
else if (String.IsNullOrEmpty(levelData.Title))
{
throw new PR2Exception(ErrorMessages.ERR_NO_LEVEL_TITLE);
}
else if (levelData.GameMode == GameMode.Unknown)
{
throw new PR2Exception(ErrorMessages.ERR_INVALID_GAME_MODE);
}
else if (!String.IsNullOrEmpty(levelData.Items) &&
!Regex.IsMatch(levelData.Items, ValidationConstraints.LEVEL_ITEMS_PATTERN))
{
throw new PR2Exception(ErrorMessages.ERR_INVALID_ITEMS);
}
using (MD5Wrapper md5 = new MD5Wrapper())
{
String hash = md5.GetHashedString(
String.Concat(levelData.Title, username?.ToLower() ?? String.Empty, levelData.Data, Pepper.LEVEL_SAVE));
if (String.CompareOrdinal(hash, levelData.Hash) != 0)
{
throw new PR2Exception(ErrorMessages.ERR_LEVEL_DATA_HASH_MISMATCH);
}
}
DateTime utcDateMinus1min = DateTime.UtcNow.AddMinutes(-1); // To prevent usage of SQL functions.
LevelVersion lastSaved = this.dbContext.LevelVersions
.Where(v => v.Level != null && v.Level.AuthorId == userId && DateTime.Compare(v.SubmittedDate, utcDateMinus1min) > 0)
.OrderByDescending(v => v.SubmittedDate).FirstOrDefault();
if (lastSaved != null)
{
throw new PR2Exception(String.Format(
ErrorMessages.ERR_WAIT_BEFORE_SAVING,
Math.Round(TimeSpan.FromMinutes(1).Subtract(DateTime.UtcNow.Subtract(lastSaved.SubmittedDate.ToUniversalTime())).TotalSeconds)));
}
Level level = this.dbContext.Levels.FirstOrDefault(l => l.AuthorId == userId && l.Title == levelData.Title);
if (level == null)
{
level = new Level
{
AuthorId = userId,
Title = levelData.Title,
IsDeleted = false
};
this.dbContext.Levels.Add(level);
}
level.IsPublished = levelData.Live;
this.dbContext.LevelVersions.Add(new LevelVersion
{
Level = level,
SubmittedDate = DateTime.UtcNow,
SubmittedIP = ipAddress,
Note = levelData.Note,
GameMode = levelData.GameMode,
MinRank = levelData.MinLevel,
CowboyChance = levelData.CowboyChance,
Gravity = levelData.Gravity,
Song = levelData.Song,
MaxTime = levelData.MaxTime,
Items = levelData.Items,
Data = levelData.Data,
PassHash = levelData.PassHash
});
this.dbContext.SaveChanges();
}