#!/usr/bin/env bash
# Stolen from https://devops.stackexchange.com/a/8984 and adapted to my use case

if (( $# == 0 )) ; then
  echo "Missing file input arguments"
  exit 1
fi

for FILE in "$@"
do
  RESOURCE=$(sed -n 's/^resource "\([^"]*\)" "\([^"]*\)".*/-target=\1.\2 /gp' "$FILE")
  MODULE=$(sed -n 's/^module "\([^"]*\)".*/-target=module.\1 /gp' "$FILE")
  if [[ -z "$RESOURCE" ]] && [[ -z "$MODULE" ]]; then
    echo "Cannot detect terraform resource and module in $FILE" >&2
    exit 1
  fi

  if [[ -n "$RESOURCE" ]]; then
    echo -e $"$RESOURCE"
  fi
  if [[ -n "$MODULE" ]]; then
    echo -e $"$MODULE"
  fi
done