private ICommand InstanceCommand(string input)
{
List<string> inputParams = input.Split("|").ToList();
string commandName = inputParams[0].ToLower();
inputParams.RemoveAt(0);
var commandType = Assembly.GetEntryAssembly()
?.GetTypes()
.Where(type => typeof(ICommand).IsAssignableFrom(type))
.FirstOrDefault(type => type.Name.Replace("Command", string.Empty).ToLower() == commandName);
if (commandType != null)
{
ICommand command = (ICommand)Activator.CreateInstance(commandType);
command.ConsoleReader = this.consoleReader;
command.ConsoleWriter = this.consoleWriter;
command.Parameters = inputParams;
command.Principal = this.currentlyLoggedInUser;
return command;
}
return null;
}
public void HandleInput()
{
this.consoleWriter.Write(Constants.ConsoleForumOutputPrefix);
string input = this.consoleReader.ReadLine();
ICommand command = this.InstanceCommand(input);
if (command == null)
{
this.consoleWriter.Write(Constants.ConsoleForumOutputPrefix);
this.consoleWriter.ErrorLine("Unsupported command...");
Thread.Sleep(Constants.NotificationDelay);
this.Reset();
}
else
{
if (!this.IsAuthorized(command))
{
this.consoleWriter.Write(Constants.ConsoleForumOutputPrefix);
this.consoleWriter.ErrorLine("You have no access to this command.");
Thread.Sleep(Constants.NotificationDelay);
this.Reset();
}
else
{
command.Execute();
if (command.ResetsConsole) this.Reset();
}
}
}
private bool IsAuthorized(ICommand command)
{
var authAttributes = command
.GetType()
.GetCustomAttributes()
.Where(attribute => attribute.GetType().Name.Contains("CommandAttribute"))
.ToList();
if (!authAttributes.Any())
{
return true;
}
else
{
return
(this.IsLoggedIn() && authAttributes
.Any(attribute => attribute.GetType().Name.Contains(this.currentlyLoggedInUser.User.Role.ToString())))
|| (!this.IsLoggedIn() && authAttributes
.Any(attribute => attribute.GetType() == typeof(GuestCommandAttribute)));
}
}
