#!/bin/sh
#
# kinect_patch_udev_rules - Patch contrib/ udev rules file to load UACFirmware
#
# Copyright (C) 2016  Antonio Ospite <ao2@ao2.it>
#
# This program is free software. It comes without any warranty, to
# the extent permitted by applicable law. You can redistribute it
# and/or modify it under the terms of the Do What The Fuck You Want
# To Public License, Version 2, as published by Sam Hocevar. See
# http://sam.zoy.org/wtfpl/COPYING for more details.

set -e

[ $# -lt 3 ] && { echo "usage: $(basename "$0") <firmware path> <kinect_upload_fw path> <55-kinect_audio.rules path>" 1>&2; exit 1; }
FIRMWARE_PATH="$1"
LOADER_PATH="$2"
UDEV_RULES_PATH="$3"

[ "x$FIRMWARE_PATH" != "x" ] || { echo "Empty FIRMWARE_PATH" 1>&2; exit 1;}
[ "x$LOADER_PATH" != "x" ] || { echo "Empty LOADER_PATH" 1>&2; exit 1;}

# The udev rules file must exist the other files may not exist just yet: they
# may be under a prefixed path different from the final one, like in the case
# when this is called at package creation time.
[ -f "$UDEV_RULES_PATH" ] || { echo "Cannot find the udev rules file: $UDEV_RULES_PATH" 1>&2; exit 1; }

if grep -q "@LOADER_PATH@ @FIRMWARE_PATH@" "$UDEV_RULES_PATH";
then
  sed -e "s|@LOADER_PATH@|${LOADER_PATH}|g" \
      -e "s|@FIRMWARE_PATH@|${FIRMWARE_PATH}|g" \
      -i "$UDEV_RULES_PATH"
else
  echo "$UDEV_RULES_PATH does not contain the expected placeholders." 2>&1
  exit 1
fi