#!/bin/sh
set -eu

usage() {
	cat <<-'EOF'
		Usage:
		  backup [-q] [TAG]
	EOF
}

help() {
	cat <<-'EOF'


		Options:
		  -q             disable verbose mode, useful for
		                 non-interactive sessions

		  TAG            the tag used to create the new
		                 backup (default: "default")


		The repository is expected to have been created with:

		  $ borg init -e repokey-blake2

		The following environment variables are expected to be exported:

		  $BORG_PASSCOMMAND
		  $BORG_REPO
		  $BORG_REMOTE_PATH

		Password-less SSH access is required, usually done via adding
		~/.ssh/id_rsa.pub to $SSH_REMOTE:.ssh/authorized_keys.


		Examples:

		  Run backup manually:

		    $ backup


		  Create backup with comment, and verbose mode active:

		    $ backup -q my-backup
	EOF
}

VERBOSE_FLAGS='--verbose --progress'
while getopts 'q' flag; do
	case "$flag" in
		(q)
			VERBOSE_FLAGS=''
			;;
		(*)
			usage >&2
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))


TAG="${1:-default}"
ARCHIVE="::{hostname}-{user}-{now}-$TAG"

borgy $VERBOSE_FLAGS "$ARCHIVE" ~/