!7

module TimerModule > DynBigNumber {
  bool active;
  long setAt, setTill;
  
  start {
    dm_onTopInput(voidfunc(fS s) {
      new Matches m;
      if "* minutes" {
        switch to q();
        int minutes = parseEnglishNumberOrInt($1);
        if (minutes <= 0) ret;
        setFields(active := true, setAt := now(), setTill := now()+fromMinutes(minutes));
        print("Timer set to " + minutes + " from now");
      }
    });
    doEvery(1.0, r updateMe);
  }
  
  void update {
    long now = now();
    if (setTill == 0 || !active) ret with setValue("");
    if (setTill <= now) {
      setValue("ALARM!");
      vmBus_send('timerAlarm, module());
      ret;
    } else {
      long seconds = iround(toSeconds(setTill-now));
      setValue(seconds/60 + ":" + formatInt(mod(seconds, 60), 2));
    }
  }
  
  // API
  
  void reset enter {
    setFields(active := false, setAt := 0L, setTill := 0L);
    update();
  }
}