#!/bin/sh -e
#
# byobu-select-backend
# Copyright (C) 2011-2014 Dustin Kirkland
#
# Authors: Dustin Kirkland <[email protected]>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.


PKG="byobu"
[ -r "$HOME/.byoburc" ] && . "$HOME/.byoburc"
[ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="/usr" || export BYOBU_PREFIX
. "${BYOBU_PREFIX}/lib/${PKG}/include/common"

usage () {
cat <<EOT
Usage: $0 [screen|tmux]

Without any parameters, it runs interactively.
EOT
exit 1
}

prompt() {
local choice
echo
echo "Select the byobu backend:"
echo " 1. tmux"
echo " 2. screen"
echo
printf "Choose 1-2 [1]: "
choice=$(head -n1)
case $choice in
1|"") _RET="tmux" ;;
2) _RET="screen" ;;
*) prompt ;;
esac
}

case $1 in
"")
prompt
choice="$_RET"
;;
screen|tmux)
choice="$1"
;;
*)
usage
;;
esac
echo "BYOBU_BACKEND=$choice" > "$BYOBU_CONFIG_DIR/backend"