#!/bin/sh

#
# This script deletes a component tag
#
# Parameters
# $1 : component name
# $2 : tag type (doc, package, source, test)
# $3 : version
# $4 : release

#
# Environment variable that MUST be defined
# by the calling script
#
# SVN_URL SVN_USER SVN_PASS

#
# Source functions
#
. `dirname $0`/functions

#
# Binaries
#
BIN_ECHO="/bin/echo"
BIN_SVN="/usr/bin/svn"

#
# Parameters
#
SVN_COMPONENT=""
TAG_TYPE=""
SVN_VERSION=""
SVN_RELEASE=""

#
# Internal variables
#
EXIT=0

#
# Main script
#
if [ $EXIT -eq 0 ] ; then
	check_svn_parameters
	if [ -z "$1" ] ; then
		$BIN_ECHO "-> SVN component parameter is missing"
		EXIT=1
	else
		SVN_COMPONENT=$1
	fi
	if [ -z "$2" ] ; then
		$BIN_ECHO "-> Tag type parameter is missing (doc, package, source or test)"
		EXIT=1
	else
		if [ "$2" != "doc" -a "$2" != "package" -a "$2" != "source" -a "$2" != "test" ] ; then
			$BIN_ECHO "-> Tag type '$2' is not supported (doc, package, source or test)"
			EXIT=1
		else
			TAG_TYPE=$2
		fi
	fi
	if [ -z "$3" ] ; then
		$BIN_ECHO "-> SVN version parameter is missing"
		EXIT=1
	else
		SVN_VERSION=$3
	fi
	if [ -z "$4" ] ; then
		if [ "$TAG_TYPE" = "package" ] ; then
			$BIN_ECHO "-> SVN release parameter is missing"
			EXIT=1
		fi
	else
		SVN_RELEASE=$4
	fi
fi
if [ $EXIT -eq 0 ] ; then
	TAG_NAME=$SVN_VERSION
	if [ "$TAG_TYPE" = "package" ] ; then
		TAG_NAME="$TAG_NAME-$SVN_RELEASE"
	fi
	$BIN_SVN delete --username $SVN_USER --password $SVN_PASS -m "Delete tag $TAG_TYPE/$TAG_NAME of component $SVN_COMPONENT" $SVN_URL/tags/component/$SVN_COMPONENT/$TAG_TYPE/$TAG_NAME >> /dev/null 2>&1
	if [ $? -ne 0 ] ; then
		$BIN_ECHO "-> Error while deleting tag '$SVN_URL/tags/component/$SVN_COMPONENT/$TAG_TYPE/$TAG_NAME'"
		EXIT=1
	fi
fi
exit $EXIT