/// <summary>
/// Accepts a command string and handles the parsing and execution of the command and the included arguments.
/// </summary>
/// <param name="commandString">The command string. Usually a string passed in from a command line interface by the user.</param>
/// <returns>A CommandResult option containing properties relevant to how data should be processed by the UI.</returns>
public CommandResult ExecuteCommand(string commandString)
{
if (commandString == null) commandString = string.Empty;
var hasSpace = commandString.Contains(' ');
var spaceIndex = 0;
if (hasSpace)
spaceIndex = commandString.IndexOf(' ');
// Parse command string to find the command name.
string commandName = hasSpace ? commandString.Remove(spaceIndex) : commandString;
if (_currentUser != null)
{
_currentUser.LastLogin = DateTime.UtcNow;
_dataBucket.UserRepository.UpdateUser(_currentUser);
_dataBucket.SaveChanges();
}
// Check for alias. Replace command name with alias.
if ((_commandContext.Status & ContextStatus.Forced) == 0)
{
var alias = defaultAliases.SingleOrDefault(x => x.Shortcut.Is(commandName));
if (_currentUser != null)
alias = _dataBucket.AliasRepository.GetAlias(_currentUser.Username, commandName);
if (alias != null)
{
commandString = hasSpace ? alias.Command + commandString.Remove(0, spaceIndex) : alias.Command;
hasSpace = commandString.Contains(' ');
spaceIndex = 0;
if (hasSpace)
spaceIndex = commandString.IndexOf(' ');
commandName = hasSpace ? commandString.Remove(spaceIndex) : commandString;
}
}
// Parse command string and divide up arguments into a string array.
var args = hasSpace ?
commandString.Remove(0, spaceIndex)
.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries) : null;
// Obtain all roles the current user is a part of.
var availableRoles = _currentUser != null ? _currentUser.Roles.Select(x => x.Name).ToArray() : new string[] { "Visitor" };
// Create command result.
var commandResult = new CommandResult(TerminalEvents)
{
Command = commandName.ToUpper(),
CurrentUser = _currentUser,
CommandContext = _commandContext,
IPAddress = _ipAddress,
};
// Obtain all commands for the roles the user is a part of.
var commands = _commands
.Where(x => x.Roles.Any(y => availableRoles.Any(z => z.Is(y))))
.ToList();
foreach (var cmd in commands)
{
cmd.CommandResult = commandResult;
cmd.AvailableCommands = commands;
}
if (_currentUser != null && _currentUser.BanInfo != null)
if (DateTime.UtcNow < _currentUser.BanInfo.EndDate)
return BanMessage(commandResult);
else
{
_dataBucket.UserRepository.UnbanUser(_currentUser.Username);
_dataBucket.UserRepository.UpdateUser(_currentUser);
_dataBucket.SaveChanges();
}
// Obtain the command the user intends to execute from the list of available commands.
var command = commands.SingleOrDefault(x => x.Name.Is(commandName));
if (commandName.Is("INITIALIZE"))
commandResult.DeactivateContext();
// Perform different behaviors based on the current command context.
switch (_commandContext.Status)
{
// Perform normal command execution.
case ContextStatus.Disabled:
if (command != null)
{
command.CommandResult.Command = command.Name;
command.Invoke(args);
}
break;
// Perform normal command execution.
// If command does not exist, attempt to use command context instead.
case ContextStatus.Passive:
if (command != null)
{
command.CommandResult.Command = command.Name;
command.Invoke(args);
}
else if (!commandName.Is("HELP"))
{
command = commands.SingleOrDefault(x => x.Name.Is(_commandContext.Command));
if (command != null)
{
args = commandString.Contains(' ') ? commandString.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries) : new string[] { commandString };
var newArgs = new List<string>();
if (_commandContext.Args != null) newArgs.AddRange(_commandContext.Args);
newArgs.AddRange(args);
command.CommandResult.Command = command.Name;
command.Invoke(newArgs.ToArray());
}
}
break;
// Perform command execution using command context.
// Reset command context if "CANCEL" is supplied.
case ContextStatus.Forced:
if (!commandName.Is("CANCEL"))
{
command = commands.SingleOrDefault(x => x.Name.Is(_commandContext.Command));
if (command != null)
{
command.CommandResult.Command = command.Name;
if (_commandContext.Prompt)
{
var newStrings = new List<string>();
if (_commandContext.PromptData != null)
newStrings.AddRange(_commandContext.PromptData);
newStrings.Add(commandString);
_commandContext.PromptData = newStrings.ToArray();
command.Invoke(_commandContext.Args);
}
else
{
args = commandString.Contains(' ') ? commandString.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries) : new string[] { commandString };
var newArgs = new List<string>();
if (_commandContext.Args != null) newArgs.AddRange(_commandContext.Args);
newArgs.AddRange(args);
args = newArgs.ToArray();
command.Invoke(args);
}
}
}
else
{
commandResult.RestoreContext();
commandResult.WriteLine("Action canceled.");
}
break;
}
// If command does not exist, check if the command was "HELP".
// If so, call the ShowHelp method to show help information for all available commands.
if (command == null)
{
if (commandName.Is("HELP"))
commandResult = DisplayHelp(commands, args, commandResult);
else if (!commandName.Is("CANCEL"))
if (commandName.IsNullOrWhiteSpace())
commandResult.WriteLine("You must supply a command.");
else
commandResult.WriteLine("'{0}' is not a recognized command or is not available in the current context.", commandName);
}
_currentUser = commandResult.CurrentUser;
if (_currentUser != null && _currentUser.BanInfo != null)
if (DateTime.UtcNow < _currentUser.BanInfo.EndDate)
return BanMessage(commandResult);
else
{
_dataBucket.UserRepository.UnbanUser(_currentUser.Username);
_dataBucket.UserRepository.UpdateUser(_currentUser);
_dataBucket.SaveChanges();
}
// Temporarily notify of messages on each command execution.
if (_currentUser != null)
{
var unreadMessageCount = _dataBucket.MessageRepository.UnreadMessages(_currentUser.Username);
if (unreadMessageCount > 0)
{
commandResult.WriteLine();
commandResult.WriteLine("You have {0} unread message(s).", unreadMessageCount);
}
}
commandResult.TerminalTitle = string.Format("Terminal - {0}", _currentUser != null ? _currentUser.Username : "******");
FinalParsing(commandResult);
return commandResult;
}
public void Invoke(string[] args)
{
var options = new OptionSet();
options.Add(
"?|help",
"Show help information.",
x => HelpUtility.WriteHelpInformation(this, options)
);
List<string> parsedArgs = null;
if (args != null)
{
try
{
parsedArgs = options.Parse(args);
}
catch (OptionException ex)
{
CommandResult.WriteLine(ex.Message);
}
}
var registrationStatus = _dataBucket.VariableRepository.GetVariable("Registration");
if (registrationStatus.Equals("Open", StringComparison.InvariantCultureIgnoreCase) || CommandResult.CommandContext.PromptData != null)
{
CommandResult.CommandContext.Prompt = false;
InviteCode inviteCode = null;
if (CommandResult.CommandContext.PromptData != null)
inviteCode = _dataBucket.InviteCodeRepository.GetInviteCode(CommandResult.CommandContext.PromptData[0]);
if (CommandResult.CommandContext.PromptData == null || inviteCode != null)
{
if (inviteCode != null)
{
if (parsedArgs == null)
parsedArgs = new List<string> { inviteCode.Username };
else
parsedArgs.Insert(0, inviteCode.Username);
}
if ((parsedArgs == null || parsedArgs.Count == 0))
{
CommandResult.WriteLine("Enter your desired username. (no spaces. sorry.)");
CommandResult.SetContext(ContextStatus.Forced, Name, args, "Username");
}
else if (parsedArgs.Count == 1)
{
if (parsedArgs[0].Length >= 3 && parsedArgs[0].Length <= 30)
{
if (!_dataBucket.UserRepository.CheckUserExists(parsedArgs[0]))
{
CommandResult.WriteLine("Enter your desired password.");
CommandResult.PasswordField = true;
CommandResult.SetContext(ContextStatus.Forced, Name, args, "Password");
}
else
{
CommandResult.WriteLine("Username already exists.");
CommandResult.WriteLine("Enter a different username.");
CommandResult.SetContext(ContextStatus.Forced, Name, null, "Username");
}
}
else
{
CommandResult.WriteLine("Username must be between 3 and 15 characters.");
CommandResult.WriteLine("Enter a different username.");
CommandResult.SetContext(ContextStatus.Forced, Name, null, "Username");
}
}
else if (parsedArgs.Count == 2)
{
if (parsedArgs[0].Length >= 3 && parsedArgs[0].Length <= 15)
{
if (!_dataBucket.UserRepository.CheckUserExists(parsedArgs[0]))
{
CommandResult.WriteLine("Re-enter your desired password.");
CommandResult.PasswordField = true;
CommandResult.SetContext(ContextStatus.Forced, Name, args, "Confirm Password");
}
else
{
CommandResult.WriteLine("Username already exists.");
CommandResult.WriteLine("Enter your desired username.");
CommandResult.SetContext(ContextStatus.Forced, Name, null, "Username");
}
}
else
{
CommandResult.WriteLine("Username must be between 3 and 15 characters.");
CommandResult.WriteLine("Enter a different username.");
CommandResult.SetContext(ContextStatus.Forced, Name, null, "Username");
}
}
else if (parsedArgs.Count == 3)
{
if (parsedArgs[0].Length >= 3 && parsedArgs[0].Length <= 15)
{
var user = _dataBucket.UserRepository.GetUser(parsedArgs[0]);
if (user == null)
{
if (parsedArgs[1] == parsedArgs[2])
{
user = new User
{
Username = parsedArgs[0],
Password = parsedArgs[1],
JoinDate = DateTime.UtcNow,
LastLogin = DateTime.UtcNow,
TimeZone = "UTC",
Sound = true,
};
var role = _dataBucket.UserRepository.GetRole("User");
user.Roles = new List<Role> { role };
if (inviteCode != null)
_dataBucket.InviteCodeRepository.DeleteInviteCode(inviteCode);
_dataBucket.UserRepository.AddUser(user);
_dataBucket.SaveChanges();
var defaultAliases = new List<Alias>
{
new Alias
{
Username = user.Username,
Shortcut = "lb",
Command = "BOARDS"
},
new Alias
{
Username = user.Username,
Shortcut = "b",
Command = "BOARD"
},
new Alias
{
Username = user.Username,
Shortcut = "t",
Command = "TOPIC"
},
new Alias
{
Username = user.Username,
Shortcut = "lm",
Command = "MESSAGES"
},
new Alias
{
Username = user.Username,
Shortcut = "m",
Command = "MESSAGE"
}
};
defaultAliases.ForEach(x => _dataBucket.AliasRepository.AddAlias(x));
_dataBucket.SaveChanges();
CommandResult.CurrentUser = user;
CommandResult.WriteLine("Thank you for registering.");
//CommandResult.WriteLine();
//var STATS = AvailableCommands.SingleOrDefault(x => x.Name.Is("STATS"));
//STATS.Invoke(new string[] { "-users" });
CommandResult.WriteLine();
CommandResult.WriteLine("You are now logged in as {0}.", CommandResult.CurrentUser.Username);
CommandResult.DeactivateContext();
}
else
{
CommandResult.WriteLine("Passwords did not match.");
CommandResult.WriteLine("Enter your desired password.");
CommandResult.PasswordField = true;
CommandResult.SetContext(ContextStatus.Forced, Name, new string[] { parsedArgs[0] }, "Password");
}
}
else
{
CommandResult.WriteLine("Username already exists.");
CommandResult.WriteLine("Enter your desired username.");
CommandResult.SetContext(ContextStatus.Forced, Name, null, "Username");
}
}
else
{
CommandResult.WriteLine("Username must be between 3 and 15 characters.");
CommandResult.WriteLine("Enter a different username.");
CommandResult.SetContext(ContextStatus.Forced, Name, null, "Username");
}
}
}
else
{
CommandResult.WriteLine("You did not supply a valid invite code.");
CommandResult.DeactivateContext();
}
}
else if (registrationStatus.Equals("Invite-Only", StringComparison.InvariantCultureIgnoreCase))
{
CommandResult.WriteLine("Enter your invite code.");
CommandResult.SetPrompt(Name, args, "Invite Code");
}
else if (registrationStatus.Equals("Closed", StringComparison.InvariantCultureIgnoreCase))
CommandResult.WriteLine("Registration is currently closed.");
}
/// <summary>
/// Deletes a user from the data context.
/// </summary>
/// <param name="user">The user to be deleted.</param>
public void DeleteUser(User user)
{
_entityContainer.Users.Remove(user);
}
/// <summary>
/// Updates an existing user in the data context.
/// </summary>
/// <param name="user">The user to be updated.</param>
public void UpdateUser(User user)
{
}
/// <summary>
/// Adds a user to the data context.
/// </summary>
/// <param name="user">The user to be added.</param>
public void AddUser(User user)
{
_entityContainer.Users.Add(user);
}
