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#!/bin/sh
set -eu

usage() {
	cat <<-'EOF'
		Usage: pb FILENAME.adoc [CONTENT]
	EOF
}


TITLE=FIXME
while getopts 't:' flag; do
	case "$flag" in
		(t)
			TITLE="$OPTARG"
			;;
		(*)
			usage >&2
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))


FILENAME="${1:-}"
SOURCE="${2:-}"
eval "$(assert-arg -- "$FILENAME" 'FILENAME')"
FILENAME="${FILENAME%.adoc}.adoc"

cd "$(dirname "$(readlink -f -- "$0")")"/../../

DIR=src/content/pastebins/"$(timestamp | sed 's|-|/|g')"
OUT="$DIR"/"$FILENAME"

if [ -e "$OUT" ]; then
	printf '"%s" already exists.\n' "$OUT" >&2
	exit 2
fi

if [ -n "$SOURCE" ]; then
	CONTENT="$(cat "$SOURCE")"
else
	if [ -t 0 ]; then
		CONTENT='FIXME'
	else
		printf 'Reading from STDIN...\n' >&2
		CONTENT="$(cat)"
		exec 0</dev/tty
	fi
fi

mkdir -p "$DIR"
printf '= %s\n\n[source,sh]\n----\n%s\n----\n' "$TITLE" "$CONTENT" > "$OUT"
${VISUAL:-${EDITOR:-vi}} "$OUT"

sh mkdeps.sh > deps.mk
git reset .
git add "$OUT" deps.mk
git commit -m "pb(1): Auto-add \"$OUT\""