public IObservable <string> Evaluate(ParsedLine line)
{
if (!line.IsCommand || line.Command.ToLower() != "countdown")
{
return(null);
}
var options = new CountdownTimerOptions();
if (!Parser.Default.ParseArguments(line.Args, options))
{
return(Return(options.GetUsage()));
}
try
{
int seconds = options.DurationSeconds;
int interval = options.IntervalSeconds;
var unitLabels = options.ParseUnitLabels(options.IntervalString);
// Create an interval sequence that fires off a value every [interval] seconds
IObservable <string> seq = Interval(TimeSpan.FromSeconds(interval))
// Run that seq until the total time has exceeded the [seconds] value
.TakeWhile(l => ((l + 1) * interval) < seconds)
// Project each element in the sequence to a human-readable time value
.Select(
l =>
String.Format("{0} remaining...",
FormatRemaining(seconds - ((l + 1) * interval), unitLabels)));
// If there are any other events configured, merge them into the sequence
if (options.Events.Any())
{
var events = options.Events.OrderBy(@event => @event.Target);
var eventTimes = Interval(TimeSpan.FromSeconds(1))
.TakeWhile(l => l < seconds)
.Where(l => events.Any(@event => @event.Target == l))
.Select(l => events.First(@event => @event.Target == l).Message);
seq = seq.Merge(eventTimes);
}
// Add a start and end message
return(Return(String.Format("{0} remaining...", FormatRemaining(seconds, options.ParseUnitLabels(options.DurationString))))
.Concat(seq)
.Concat(Return(String.Join(" ", options.FinishedMessage))));
}
catch (ArgumentException)
{
return(Return(options.GetUsage()));
}
}
public IObservable<string> Evaluate(ParsedLine line)
{
if(!line.IsCommand || line.Command.ToLower() != "countdown")
{
return null;
}
var options = new CountdownTimerOptions();
if(!Parser.Default.ParseArguments(line.Args, options))
{
return Return(options.GetUsage());
}
try
{
int seconds = options.DurationSeconds;
int interval = options.IntervalSeconds;
var unitLabels = options.ParseUnitLabels(options.IntervalString);
// Create an interval sequence that fires off a value every [interval] seconds
IObservable<string> seq = Interval(TimeSpan.FromSeconds(interval))
// Run that seq until the total time has exceeded the [seconds] value
.TakeWhile(l => ((l + 1) * interval) < seconds)
// Project each element in the sequence to a human-readable time value
.Select(
l =>
String.Format("{0} remaining...",
FormatRemaining(seconds - ((l + 1) * interval), unitLabels)));
// If there are any other events configured, merge them into the sequence
if(options.Events.Any())
{
var events = options.Events.OrderBy(@event => @event.Target);
var eventTimes = Interval(TimeSpan.FromSeconds(1))
.TakeWhile(l => l < seconds)
.Where(l => events.Any(@event => @event.Target == l))
.Select(l => events.First(@event => @event.Target == l).Message);
seq = seq.Merge(eventTimes);
}
// Add a start and end message
return Return(String.Format("{0} remaining...", FormatRemaining(seconds, options.ParseUnitLabels(options.DurationString))))
.Concat(seq)
.Concat(Return(String.Join(" ", options.FinishedMessage)));
}
catch(ArgumentException)
{
return Return(options.GetUsage());
}
}