public static Command Parse(string currentCommandLine)
{
int numberOfArguments = (currentCommandLine.Split(new char[]{'|'}, StringSplitOptions.RemoveEmptyEntries)).Length;
int commandNameLastIndex = currentCommandLine.IndexOf(' ');
if (commandNameLastIndex == -1)
{
throw new FormatException("Invalid command line !");
}
string commandName = currentCommandLine.Substring(0, commandNameLastIndex);
string commandParameters = currentCommandLine.Substring(commandNameLastIndex + 1);
string[] commandArguments = commandParameters.Split(new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
if (numberOfArguments != commandArguments.Length)
{
throw new FormatException("Invalid command or spaces !");
}
if (commandName.Contains('|'))
{
throw new FormatException("Invalid command: " + currentCommandLine);
}
for (int i = 0; i < commandArguments.Length; i++)
{
commandArguments[i] = commandArguments[i].Trim();
}
Command command = new Command(commandName, commandArguments);
return command;
}
public string ProcessCommand(Command currentCommand)
{
switch (currentCommand.CommandName)
{
case "AddEvent": return this.AddEvent(currentCommand);
case "DeleteEvents": return this.DeleteEvent(currentCommand);
case "ListEvents": return this.GetListEvents(currentCommand);
default:
throw new FormatException("WTF " + currentCommand.CommandName + " is?");
}
}
private string DeleteEvent(Command currentCommand)
{
if (currentCommand.Paramms.Length == 1)
{
int numberOfDeletedEvents = this.eventsManager.DeleteEventsByTitle(currentCommand.Paramms[0]);
if (numberOfDeletedEvents == 0)
{
return "No events found.";///1
}
return numberOfDeletedEvents + " events deleted";
}
throw new FormatException("Invalid params");
}
private string AddEvent(Command currentCommand)
{
if (currentCommand.Paramms.Length == 2)
{
var date = DateTime.ParseExact(currentCommand.Paramms[0], "yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture);
Event createdEventFromCommand = new Event(date, currentCommand.Paramms[1]);
this.eventsManager.AddEvent(createdEventFromCommand);
return "Event added";
}
if (currentCommand.Paramms.Length == 3)
{
var date = DateTime.ParseExact(currentCommand.Paramms[0], "yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture);
var createdEventFromCommand = new Event(date, currentCommand.Paramms[1], currentCommand.Paramms[2]);
this.eventsManager.AddEvent(createdEventFromCommand);
return "Event added";
}
throw new FormatException("Invalid params");
}
private string GetListEvents(Command currentCommand)
{
if (currentCommand.Paramms.Length == 2)
{
DateTime date = DateTime.ParseExact(currentCommand.Paramms[0], "yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture);
int commandNumber = int.Parse(currentCommand.Paramms[1]);
List<Event> events = this.eventsManager.ListEvents(date, commandNumber).ToList();
StringBuilder outputText = new StringBuilder();
if (!events.Any())
{
return "No events found";
}
foreach (var e in events)
{
outputText.AppendLine(e.ToString());
}
return outputText.ToString().Trim();
}
throw new FormatException("Invalid params!");
}