#!/bin/bash

if [[ -z "$1" ]]; then
   echo "File missing or use -"
   exit 1
fi

if [[ "$1" = "-" ]]; then
  pv "$1" | gpg -d
  exit $?
fi

if [[ -e "${1%.gpg}" ]]; then
   echo "Target already exists"
   exit 1
fi

echo Creating "${1%.gpg}"
if [[ -z "$GPGPASS" ]]; then
   pv "$1" | gpg -d -o "${1%.gpg}" || {
   echo ""
   echo "If agent doesnt work, then:"
   echo "Give password with env GPGPASS ( GPGPASS=secret gpg-decrypt $1 )"
   }
else
  {
    echo "$GPGPASS";
    pv "$1";
  } | \
    gpg -o "${1%.gpg}" -d --passphrase-fd 0 --batch --yes
fi