#!/bin/bash --norc
# Usage: ./.do_setversion {currentversionstr} {newversionstr}

cat << !
  These files will be revised...
!
(
  echo -e "readme.txt: \c"; egrep '^Stable tag: ' readme.txt | head -1
  echo -e "readme.txt: \c"; egrep '^Version: ' readme.txt | head -1
  echo -e "backgammon.php: \c"; egrep '^Version: ' backgammon.php | head -1
  echo -e "backgammon.php: \c"; egrep 'define..FHK_BACKGAMMON_VERSION.,' backgammon.php | head -1
) | cat -n | sed -e 's/^/    /'

if [ "${1}x" == 'x' -o "${2}x" == 'x' ]; then
  echo "" >&2
  echo "Usage: ./.do_setversion {currentversionstr} {newversionstr}" >&2
  exit 1
fi

if [ "${1}x" == "${2}x" ]; then
  echo "" >&2
  echo "Refusing to update from same version. Nothing to do." >&2
  exit 3
fi

V=$(egrep 'define..FHK_BACKGAMMON_VERSION.,' backgammon.php | head -1 | sed -e 's/^.*, *//' -e "s/'//g" -e 's/);//')

if [ "${V}x" == "${2}x" ]; then
  echo "" >&2
  echo "The version already appears to be set to version $2. Nothing to do." >&2
  exit 4
fi

if [ "${V}x" != "${1}x" ]; then
  echo "" >&2
  echo "Detected current version as $V ... doesn't match $1 ... try using: ./.do_setversion $V $2" >&2
  exit 2
fi

echo "" >&2
echo "Current version is $V  ... will reset to $2" >&2

sedfiles "^Stable tag: $V" "Stable tag: $2" readme.txt
sedfiles "^Version: $V" "Version: $2" readme.txt
sedfiles "^Version: $V" "Version: $2" backgammon.php
sedfiles "'FHK_BACKGAMMON_VERSION', '$V'" "'FHK_BACKGAMMON_VERSION', '$2'" backgammon.php

exit 0