setup

#!/usr/bin/env bash
# SPDX-License-Identifier: MIT
#
# MIT License
#
# Copyright (c) 2019 Ericsson
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is furnished
# to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
# OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

set -e

if [ "$#" -lt 2 ] || [ "$#" -gt 3 ]; then
	cat 1>&2 << EOF
USAGE
	setup path url [<rev>]

	path = workspace path
	url  = OWEL url
	rev  = a specific revision (SHA-1/tag)

EXAMPLES
	# setup 'xyz-top' in directory 'xyz'
	$ setup xyz ssh://xyz/xyz-top

	# setup 'xyz-top' starting from 1.0.1
	$ setup src/xyz-1.0.1 ssh://xyz/xyz-top 1.0.1
EOF
	exit 1
fi

path="$1"
url="$2"

if [ -d "${path}" ]; then
	echo "error: '${path}' already exist" 1>&2
	exit 1
fi

if ! command -v git > /dev/null; then
	echo "error: 'git' is not found" 1>&2
	exit 1
fi

if [ "x${USER}" != "x" ]; then
	OVE_USER="${USER}"
elif [ "x${LOGNAME}" != "x" ]; then
	OVE_USER="${LOGNAME}"
elif command -v whoami > /dev/null; then
	OVE_USER="$(\whoami)"
else
	OVE_USER="ove"
fi

if [ "$OVE_USER" = "root" ]; then
	prompt="#"
else
	prompt="$"
fi

run() {
	echo "${prompt} $*"
	if ! eval "$*"; then
		echo "error: '$*' failed" 1>&2
		exit 1
	fi
}

run "mkdir -p ${path}"
run "cd ${path}"
run "git clone -q ${url}"
run "git clone -q https://github.com/Ericsson/ove.git .ove"
owel=${2##*/}
owel=${owel%.*}
run "ln -s ${owel} .owel"
run "ln -s .ove/ove ove"
if [ "$#" -eq 3 ]; then
	run "git -C .owel -c advice.detachedHead=false checkout $3"
fi

owel_cache=/tmp/${OVE_USER}/ove/owel.cache
if [ -d /var/tmp ]; then
	owel_cache=/var${owel_cache}
fi
if [ -e "${owel_cache}" ]; then
	rm "${owel_cache}"
fi

echo
echo "Please run:"
echo "${prompt} cd ${path}"
echo "${prompt} source ove"