#!/bin/sh
#
#    byobu-shell: display the MOTD and launch the default shell
#    Copyright (C) 2008 Canonical Ltd.
#
#    Authors: Dustin Kirkland <kirkland@byobu.org>
#
#    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 "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="@prefix@" || export BYOBU_PREFIX
. "${BYOBU_PREFIX}/lib/${PKG}/include/common"

FLAG="$BYOBU_CONFIG_DIR/.welcome-displayed"

# Find a MOTD, seems that they're moving around
for i in /etc/motd /run/motd.dynamic /run/motd; do
	[ -r $i ] && [ ! -e "$HOME"/.hushlogin ] && cat $i && break
done

if [ ! -e "$FLAG" ]; then
	echo
	echo "Welcome to the light, powerful, text window manager, Byobu."
	echo "You can toggle the launch of Byobu at login with:"
	echo "  'byobu-disable' and 'byobu-enable'"
	echo
	echo "For tips, tricks, and more information, see:"
	echo " * https://byobu.org"
	echo
	touch "$FLAG"
fi

# Use a login shell (-l) so that profiles are sourced and PS1 is colourised.
# Exceptions:
#   fish  - "status --is-login" triggers autostart, causing an infinite loop (LP#2064030)
#   zsh   - .zshrc commonly guards against login context with [[ -o login ]] && return,
#           which silently skips interactive config; drop -l so the first window matches
#           default-command 'exec $SHELL' used for all subsequent windows (GH: #104)
if [ -n "$SHELL" ] && [ -x "$SHELL" ]; then
	case "$SHELL" in
		*/fish|*/zsh)
			exec "$SHELL"
			;;
		*)
			exec "$SHELL" -l
			;;
	esac
else
	exec /bin/sh -l
fi

# vi: syntax=sh ts=4 noexpandtab
