#!/bin/sh
set -eu

usage() {
	cat <<-'EOF'
		Usage:
		  eslaide FILENAME.slides > FILENAME.ps
		  eslaide -h
	EOF
}

help() {
	cat <<-'EOF'


		Options:
		  -h, --help         show this message

		  FILENAME.slides    the name of the input .slides file


		Process the FILENAME.slides, and generate the derived PostScript
		file.


		Examples:

		  Generate the PostScript for a presentation:

		    $ eslaide src/a-presentation.md > src/a-presentation.ps
	EOF
}


for f in "$@"; do
	case "$f" in
		--)
			break
			;;
		--help)
			usage
			help
			exit
			;;
		*)
			;;
	esac
done

while getopts 'h' flag; do
	case "$flag" in
		h)
			usage
			help
			exit
			;;
		*)
			usage >&2
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))

. src/lib.sh

FILENAME="${1:-}"
eval "$(assert_arg "$FILENAME" 'FILENAME.slides)"


# shellcheck source=/dev/null
. "${FILENAME%.*}.conf"
DIR="$(dirname "$FILENAME")"



echo TODO >&2