if [[ "$#" -eq 0 ]]; then
    echo "see $0 --help"
    exit 0;
fi

while [ $# -gt 0 ]; do
  case "$1" in
    -u)
      USERNAME=$2
      ;;
    -p)
      PASSWORD=$2
      ;;
    -s)
      START_TIME=$2
      ;;
    -e)
     END_TIME=$2
      ;;
    --help)
      echo -e "usage: $0 -u userName -p 123pass -s "12:00 am" -e "08:00 am""

      exit 0
      ;;
    *)
      echo "Invalid argument: $1"
      echo "see $0 --help"
      exit -1
  esac
  shift
  shift
done