#!/usr/bin/env bash
#=============================================================================
# Copyright 2010-2012 Kitware, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#=============================================================================

# Run this script to set up the topic stage for pushing changes.

# Project configuration instructions:
#
# - Run a Topic Stage repository next to the main project repository.
#
# - Populate adjacent "config" file with:
#    stage.url = Topic Stage repository URL
#    stage.pushurl = Topic Stage push URL if not "$url"

egrep-q() {
	egrep "$@" >/dev/null 2>/dev/null
}

die() {
	echo 1>&2 "$@" ; exit 1
}

# Make sure we are inside the repository.
cd "${BASH_SOURCE%/*}" &&

# Load the project configuration.
url=$(git config -f config --get stage.url) &&
pushurl=$(git config -f config --get stage.pushurl || echo '') ||
die 'This project is not configured to use a topic stage.'

# Configure the remote if necessary.
if git config remote.stage.url >/dev/null; then
	echo 'Topic stage already configured.'
else
	echo 'Setting up the topic stage...' &&
	git remote add stage "$url" &&
	if test -n "$pushurl"; then
		git config remote.stage.pushurl "$pushurl"
	fi
fi || die 'Could not add the topic stage remote.'