#!/bin/sh
# env
# Written in 2019 by Lucas
# CC0 1.0 Universal/Public domain - No rights reserved
#
# To the extent possible under law, the author(s) have dedicated all
# copyright and related and neighboring rights to this software to the
# public domain worldwide. This software is distributed without any
# warranty. You should have received a copy of the CC0 Public Domain
# Dedication along with this software. If not, see
# <http://creativecommons.org/publicdomain/zero/1.0/>.

usage() {
	cat - <<. >&2
Usage:
	${0##*/} [-2pu] service
.
	exit 1
}

clip() { xclip -q -r -l 1 -sel clip 2>/dev/null; }

get_user() {
	echo user
	sekrit get services/"$1"/user | clip
}

get_pass() {
	echo pass
	sekrit get services/"$1"/pass | clip
}

get_2fa() {
	echo 2fa
	otpcli_opts=
	case $1 in
	isnic)	otpcli_opts="-H sha512 -d 8"
		;;
	esac
	sekrit get services/"$1"/2fa | otpcli $otpcli_opts | clip
}

get_from_flags() {
	user=$1
	pass=$2
	sfa=$3
	s=$4

	if [ $user = yes ] && ! sekrit has services/"$s"/user; then
		printf "%s: service \"%s\" has no user.\n" \
		    "${0##*/}" "$s" >&2
		exit 1
	fi
	if [ $pass = yes ] && ! sekrit has services/"$s"/pass; then
		printf "%s: service \"%s\" has no pass.\n" \
		    "${0##*/}" "$s" >&2
		exit 1
	fi
	if [ $sfa = yes ] && ! sekrit has services/"$s"/2fa; then
		printf "%s: service \"%s\" has no 2fa.\n" \
		    "${0##*/}" "$s" >&2
		exit 1
	fi

	[ $user = yes ] && get_user "$s"
	[ $pass = yes ] && get_pass "$s"
	[ $sfa = yes ] && get_2fa "$s"
}

get_all() {
	s=$1
	if ! sekrit has services/"$s"/pass; then
		printf "%s: Unknown service \"%s\".\n" \
		    "${0##*/}" "$s" >&2
		exit 1
	fi

	sekrit has services/"$s"/user && get_user "$s"
	get_pass "$s"
	sekrit has services/"$s"/2fa && get_2fa "$s"
}

sfa=no
pass=no
user=no
while getopts 2pu flag; do
	case $flag in
	2)	sfa=yes
		;;
	p)	pass=yes
		;;
	u)	user=yes
		;;
	*)	usage
		;;
	esac
done
shift $(($OPTIND - 1))

if [ $# -ne 1 ] || [ -z "$1" ]; then
	usage
fi
service=$1

if [ $sfa = yes ] || [ $pass = yes ] || [ $user = yes ]; then
	get_from_flags $user $pass $sfa "$service"
else
	get_all "$service"
fi