#!/bin/bash
SMENUDIR=$(dirname $BASH_SOURCE)
export SMENUDIR

smenu_fetch () {
local repo=https://github.com/p-gen/smenu.git
if git clone $repo /tmp/smenu; then
  pushd /tmp/smenu || return 1
  if bash ./build.sh; then
    mv smenu "$SMENUDIR"
    chmod +x "$SMENUDIR/smenu"
  else
    echo Error attempting to build smenu from the repo
    return 1
  fi
    rm -rf /tmp/smenu
    popd || return 1
else 
  echo Error unable to fetch repo at https://github.com/p-gen/smenu.git
  return 1
fi
}

smenu () {
 [[ ! $SMENUDIR ]] && echo unable to establish Bash Template directory && return 2
 [[ ! -f "$SMENUDIR/smenu" ]] && smenu_fetch
 if [[ -f "$SMENUDIR/smenu" ]]; then
 [[ ! $@ ]] && set -- --help
 $SMENUDIR/smenu "$@"
else
  echo unable to fetch/build smenu, see $BASH_SOURCE
  return 1
fi
}

confirm () {
local res  
prompt=${1:-Please confirm your choice:}
res=$(
       smenu -2 ^Y -1 ^N -3 ^C -s /^N -x cur 10 \
              -m "${prompt}:"   \
         <<< "YES NO CANCEL"
     )

case $res in
  YES)
  res=0   ;;
  NO)
  res=1   ;;
  CANCEL)
  res=2  ;;
  *)
  res=3  ;;
esac
return $res
}

smenu_test () {
echo "testing smenu using a simple confirmation"  

confirm "Choose or abort and see return value"
echo $?  

if confirm "Choose or abort and an if statement is evaluated"; then 
echo "confirm returned 0/true (i.e. YES), proceed" 
else 
echo "confirm returned other than 0, i.e. false, do nothing"
fi 
}