#!/bin/sh
set -ex

usage() {
	set +x
	printf "\
Usage:
	%s start [window manager]\n" "$argv0" >>/dev/stderr
	exit 1
}

[ -n "$1" ] || usage

# assumption: $HOME contains the path to the user's home directory

DISPLAYM_CONFIG="$HOME/.config/displaym"; export DISPLAYM_CONFIG
[ -d "$DISPLAYM_CONFIG" ] || mkdir -p "$DISPLAYM_CONFIG"

case "$1" in
	(start)
		WM="$2"; export WM
		cat "$DISPLAYM_CONFIG/.xinitrc" "$DISPLAYM_CONFIG/$WM/.xinitrc" >"$HOME/.xinitrc"
		sh "$DISPLAYM_CONFIG/$WM/start.sh"
		;;
	(stop)
		sh "$DISPLAYM_CONFIG/$WM/stop.sh"
		pkill "$WM"
		;;
	(*) usage ;;
esac