public string ProcessCommand(Command command)
{
string cmdName = command.CommandName;
int argsLen = command.Arguments.Length;
if ((cmdName == "AddEvent") && (argsLen == 2))
{
return AddEventWithDateAndTitle(command);
}
else if ((cmdName == "AddEvent") && (argsLen == 3))
{
return AddEventWithDateTitleAndLocation(command);
}
else if ((cmdName == "DeleteEvents") && (argsLen == 1))
{
return DeleteEvent(command);
}
else if ((cmdName == "ListEvents") && (argsLen == 2))
{
return ListEvents(command);
}
else
{
throw new Exception("Non existing command : " + command.CommandName);
}
}
private string AddEventWithDateTitleAndLocation(Command command)
{
var date = DateTime.ParseExact(command.Arguments[0], "yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture);
var currentEvent = new CalendarEvent(date, command.Arguments[1], command.Arguments[2]);
this.EventsManager.AddEvent(currentEvent);
return "Event added";
}
public static Command Parse(string cmd)
{
int endOfCmd = cmd.IndexOf(' ');
if (endOfCmd == -1)
{
throw new ArgumentException("Invalid command" + cmd);
}
string cmdName = cmd.Substring(0, endOfCmd);
var cmdArguments = CommandArgumentsParser(cmd, endOfCmd);
var command = new Command(cmdName, cmdArguments);
return command;
}
private string ListEvents(Command command)
{
var date = DateTime.ParseExact(command.Arguments[0], "yyyy-MM-ddThh:mm:ss", CultureInfo.InvariantCulture);
var count = int.Parse(command.Arguments[1]);
var events = this.EventsManager.ListEvents(date, count).ToList();
var result = new StringBuilder();
if (!events.Any())
{
return "No events found";
}
foreach (var ev in events)
{
result.AppendLine(ev.ToString());
}
return result.ToString().Trim();
}
private string DeleteEvent(Command command)
{
int countOfDeletedItems = this.EventsManager.DeleteEventsByTitle(command.Arguments[0]);
if (countOfDeletedItems == 0)
{
return "No events found.";
}
return countOfDeletedItems + " events deleted";
}