#! /bin/bash

learn-harmony()(

  set -eu

  [ "${1:-}" != "-d" ]  || { set -x ; shift ; }
  trap '[ "$?" = "0" ] || >&2 echo  ABNORMAL TERMINATION' EXIT

  BASE_DIR=$(readlink -f "$(dirname "${BASH_SOURCE}")/..")
  SCRIPTS_DIR=$(readlink -f "$(dirname "${BASH_SOURCE}")")
  . "${SCRIPTS_DIR}/common"
  export PATH=$SCRIPTS_DIR:$PATH

  _short_help(){

    cat <<-EOM
  
  NAME
    learn-harmony -- Harmony Learning Tool prototype
    ($(basename ${BASE_DIR}) example)

  SYNOPSYS

    learn-harmony [GLOBAL_OPTIONS] COMMAND [OPTIONS]

    learn-harmony list              # List learning steps
    learn-harmony show STEP         # Show instruction of step STEP
    learn-harmony check [STEP]        # Verify that your ready to begin step STEP+1

EOM

  }

  _extra_help(){

    cat <<-EOM

  GLOBAL_OPTIONS

    -d     Debug mode.

  WARNINGS

    This script is experimetal. Use with caution.
EOM

  }

case "${1:-}" in

  -h|--help|"")
	_short_help
	_extra_help
	;;
   ls|list)
	   echo "not implemented"
	   ;;
   show)
	   echo "not implemented"
	   ;;
   verify)
	   echo "not implemented"
	   ;;
   *)
        _warn "Unknown COMMAND '$1'"
	exit 1
	;;
esac 

)


[ "$0" != "${BASH_SOURCE}" ] || learn-harmony "${@}"