#!/bin/sh

# upload_zaptel: upload a zaptel tarball to updates.xorcom.com
#

set -e

BRANCH_NAME=1.4
REV=HEAD
ZAPTEL_BASE=http://svn.digium.com/svn/zaptel
TARBALLS_DIR=$PWD

me=`basename $0`

say() {
  echo "$me: $@"
}

usage() {
  echo >&2 "$0: Generate snapshot from Zaptel SVN"
  echo >&2 '    ($Id$)'
  echo >&2 ""
  echo >&2 "$0 [-r REV] [-2] [-s]"
  echo >&2 "$0 <-h | --help>: This message"
  echo >&2 ""
  echo >&2 "Options:"
  echo >&2 "   -2 --zap12:         Use Asterisk 1.2. Implies -u."
  echo >&2 "   -r --rev REV:       extract xpp-zaptel from this revision ($REV)."
  echo >&2 "   -s --show:          Just show  versions. Do nothing"

}

gen_changelog() {
	SVN2CL_CMD="${SVN2CL_CMD:-`which svn2cl`}"
	# FIXME: add better parsing here if you want to pass extra
	# arguments through the environment to SVN2CL_CMD
	if [ ! -x "$SVN2CL_CMD" ]; then
		say "Not creating changelog: svn2cl not available."
		# FIXME: any point in creating an empty ChangeLog file?
		return
	fi
	$SVN2CL_CMD --include-rev --output "$1" -r 1:$REV "$2"
}

opt_showonly=no

options=`getopt -o 2hr:s --long zap12,help,rev:,revision:,show -- "$@"`
if [ $? != 0 ] ; then echo >&2 "Terminating..." ; exit 1 ; fi

# Note the quotes around `$TEMP': they are essential!
eval set -- "$options"

while true ; do
	case "$1" in
		-2|--zap12) BRANCH_NAME=1.2;;
		-s|--show) opt_showonly=yes ;;
		-r|--rev|--revision) REV="$2"; shift ;;
		-h|--help) usage; exit 0;; 
		--) shift ; break ;;
	esac
	shift;
done

BRANCH=branches/$BRANCH_NAME
ZAPTEL_URL=$ZAPTEL_BASE/$BRANCH

set -e

# Get the name of the "previous version" for this release.
# The idea is to look at the latest tag for that branhch. Tags are
# global, and hence we filter tag names by branch name.
#
# Note: this strips any minor version number. 
# e.g: if last releast was 1.4.5.1, this will still return 1.4.5 . Here
# we rely on the fact that the revision number will be added.
zap_ver=`svn ls -r $REV $ZAPTEL_BASE/tags | grep "^$BRANCH_NAME" \
  | sed -e "s/\($BRANCH_NAME\.[0-9]\+\)[/.-].*/\1/" \
  | sort -nu -t . -k 3 | tail -n 1`

real_rev=`svn info -r $REV $ZAPTEL_URL \
  | awk '/^Last Changed Rev: /{print $4}'`

ver_full="$zap_ver.9.svn.r$real_rev"
tar_name="zaptel-$ver_full"
tar_ball_full="$TARBALLS_DIR/$tar_name.tar.gz"

say "Version: $ver_full (ver: $zap_ver, rev: $real_rev)"
say "Tarball:  $tar_ball_full"

if [ "$opt_showonly" = 'yes' ]; then
	exit 0;
fi

ZAP_CHECKOUT_DIR=`mktemp -d zaptel_checkout_dir_XXXXXX` 

# Package a tarball from the subversion, using 'make dist':
svn export -q -r $REV $ZAPTEL_URL $ZAP_CHECKOUT_DIR/$tar_name
echo "$ver_full" >$ZAP_CHECKOUT_DIR/$tar_name/.version
gen_changelog $ZAP_CHECKOUT_DIR/$tar_name/ChangeLog $ZAPTEL_URL
tar cz -C $ZAP_CHECKOUT_DIR -f $tar_ball_full $tar_name

rm -rf $ZAP_CHECKOUT_DIR