/// <summary>
/// Check if the selected alias is available for this Login Account,
/// if the alias is not previously associated with this Login, and it
/// is available, create it.
/// </summary>
public static CheckAliasResult ValidateUsage(CSSDataContext db,
Login login, bool allowCreate, string legacyPassword, ref string callsignWithTags, out Alias alias)
{
alias = null;
//Parse Callsign
var match = Regex.Match(callsignWithTags,
string.Concat(@"^(?<token>\W)?(?<callsign>[a-z]\w+)(@(?<tag>\w+))?$"),
RegexOptions.Compiled | RegexOptions.IgnoreCase);
var token = match.Groups["token"].Value;
var callsign = match.Groups["callsign"].Value;
var tag = match.Groups["tag"].Value;
if (callsign.Length < MinAliasLength || callsign.Length > MaxAliasLength)
{
return(CheckAliasResult.Unavailable);
}
if (BadWords.ContainsBadWord(callsign) == true)
{
return(CheckAliasResult.ContainedBadWord);
}
alias = db.Alias.FirstOrDefault(p => p.Callsign == callsign);
IEnumerable <Group_Alias_GroupRole> group_roles = null;
//Check if this callsign is not empty
if (string.IsNullOrEmpty(callsign))
{
return(CheckAliasResult.Unavailable);
}
//Validate that alias is a member of group associated with this tag
if (!string.IsNullOrEmpty(tag))
{
if (alias == null)
{
return(CheckAliasResult.Unavailable);
}
group_roles = alias.Group_Alias_GroupRoles
.Where(p => p.Group.Tag == tag);
if (group_roles.Count() == 0)
{
return(CheckAliasResult.Unavailable);
}
//Override input tag
tag = group_roles.Select(p => p.Group.Tag).FirstOrDefault();
}
//Validate that the alias has the role which allows him to use this tag with this group
if (!string.IsNullOrEmpty(token))
{
if (alias == null)
{
return(CheckAliasResult.Unavailable);
}
var tokenChar = token[0];
//User has selected a @Tag
if (!string.IsNullOrEmpty(tag))
{
if (group_roles.Any(p => p.GroupRole.Token == tokenChar) == false)
{
return(CheckAliasResult.Unavailable);
}
}
//User has not selected a @Tag
else
{
group_roles = alias.Group_Alias_GroupRoles
.Where(p => p.GroupRole.Token == tokenChar && !p.Group.IsSquad);
if (group_roles.Count() == 0)
{
return(CheckAliasResult.Unavailable);
}
}
}
//Check if we can create this alias
if (alias == null)
{
if (login != null)
{
// Check that the user has not used up all their aliases.
if (GetAliasCount(db, login) <= 0)
{
return(CheckAliasResult.AliasLimit);
}
}
CheckAliasResult result = CheckAliasResult.Available;
if (Settings.Default.UseAsgsForLegacyCallsignCheck == true)
{
result = ValidateLegacyCallsignUsage(callsign, legacyPassword);
}
if (result != CheckAliasResult.Available)
{
return(result);
}
if (allowCreate && login != null)
{
alias = new Alias()
{
Callsign = callsign,
DateCreated = DateTime.Now,
IsDefault = false,
IsActive = true
};
login.Aliases.Add(alias);
db.SubmitChanges();
}
else //Alias does not exist, and we cannot create it.
{
return(CheckAliasResult.Available);
}
}
//Check if the user has this alias
else if (login != null)
{
int aliasID = alias.Id;
if (!login.Identity.Logins.SelectMany(p => p.Aliases).Any(p => p.Id == aliasID))
{
return(CheckAliasResult.Unavailable);
}
}
//Override input callsign
callsignWithTags = string.Format("{0}{1}{2}", token, alias.Callsign,
(!string.IsNullOrEmpty(tag)) ? "@" + tag : string.Empty);
return(CheckAliasResult.Registered);
}
public static int GetAliasCount(CSSDataContext db, string username)
{
Login login = Login.FindLoginByUsernameOrCallsign(db, username);
return(GetAliasCount(db, login));
}