#!/bin/sh
set -u

if [ -n "${ZSH_VERSION:-}" ]; then
  # don't execute trap on return from functions
  setopt local_options posix_traps no_warn_create_global
fi

RESOURCE=idiotheke.de
PASSWORD="$(pass $RESOURCE)"
LOGIN="$(echo "$PASSWORD" | sed -rne 's/login: //p')"
URL="$(echo "$PASSWORD" | sed -rne 's/url: //p')"
PASSWORD="${PASSWORD%%
*}" #first line only

if [ -n "${1:-}" ]; then
  ASKPASS="$(tempfile --prefix=askpass --mode=700)"
  cleanup() { rm -f $ASKPASS; trap - 0; }
  trap cleanup 0

  echo '#!/bin/sh' >> $ASKPASS
  echo "echo ${LOGIN}:${PASSWORD}" >> $ASKPASS

  wget --continue --use-askpass="$ASKPASS" "$@"

  cleanup
  ! command -v unfunction >/dev/null || unfunction cleanup
else
  LFTP_PASSWORD="$PASSWORD" lftp -e "open -u $LOGIN --env-password $URL"
fi

unset RESOURCE LOGIN PASSWORD URL ASKPASS