#!/usr/bin/env zsh

# author:	Daniel Sommer <daniel.sommer@velvettear.de>
# license:	MIT

# exit on error
set -e

# check permissions
[[ "$EUID" != 0 ]] && printf "error: permission denied!\n" >&2 && exit 1

# check which action to execute
[[ -n "$1" ]] && action="$1" || action="backup"

# check if script exists
script="$(dirname $(realpath "$0"))/$action.sh"
[[ ! -x "$script" ]] && printf "error: script '"$script"' does not exist or is not executable!\n" >&2 && exit 1

# get the "home" directory
home="$(dirname $(realpath "$0"))"

# setup restic
export RESTIC_USER="$(whoami)"
export RESTIC_REPOSITORY="rest:http://192.168.100.101:8000"
export RESTIC_PASSWORD="\$Velvet90"
export RESTIC_COMPRESSION="auto"
export RESTIC_CACHE_DIR="/var/cache/restic"
export RESTIC_LOG="/var/log/restic-$action.log"

# check if .env file exists and source it
env="$home/$(hostname).env"
[[ -r "$env" ]] && source "$env"

# set default values for the notification if undefined
[[ -z "$RESTIC_NTFY_TITLE" ]] && RESTIC_NTFY_TITLE="$(hostname)"
[[ -z "$RESTIC_NTFY_ICON" ]] && RESTIC_NTFY_ICON="white_circle"

# execute "pre" action if defined
[[ -n "$RESTIC_ACTION_PRE" ]] && eval "$RESTIC_ACTION_PRE"

# source / execute restic script
source "$script" > >(tee "$RESTIC_LOG") 2>&1

# execute "post" action if defined
[[ -n "$RESTIC_ACTION_POST" ]] && eval "$RESTIC_ACTION_POST"

# send a notification
/etc/velvettear/scripts/notify.sh "restic" "$RESTIC_LOG" --title "$RESTIC_NTFY_TITLE" --icon "$RESTIC_NTFY_ICON" > /dev/null