#!/bin/sh
# stops the script immediately if any error is encountered
set -e

PINK="\033[35m"
RESET="\033[0m"

kanidm_backup() {
  # $1 = out path
  echo -e "$PINK  kanidm: backing up database$RESET"

  DATABASE_DUMP_PATH="$(mktemp)"
  chown kanidm:kanidm "$DATABASE_DUMP_PATH"
  run0 -u kanidm --unit=kanidmd sh -c "kanidmd database backup \"$DATABASE_DUMP_PATH\""

  rsync "$DATABASE_DUMP_PATH" "$1"
  rm "$DATABASE_DUMP_PATH"

  echo -e "$PINK  kanidm: DONE$RESET"
}

postgres_backup() {
  # $1 = database to backup
  # $2 = location to put backup
  echo -e "$PINK  postgres($1): backing up database $1 to stdout$RESET"
  run0 -u postgres pg_dump --dbname="$1" > "$2"

  echo -e "$PINK  postgres($1): DONE$RESET"
}

if [ "$1" = "" ]; then
  echo "$0: [BACKUP_DIR]"
  exit 1
elif [ "$USER" != "root" ]; then
  echo "$0: rerun the script as root"
  exit 1
fi

case "$1" in
  /*) echo " ";;
  *) echo "$0: use absolute path for backup dir"; exit 1;;
esac

BACKUP_DIR="$1"
echo -e "$PINK  using folder $BACKUP_DIR$RESET"
mkdir --parents "$BACKUP_DIR"

SERVICES="jellyfin radarr sonarr prowlarr uptime-kuma deluged forgejo karakeep-web karakeep-workers karakeep-browser"

systemctl stop $SERVICES

rsync -avP /media/ --exclude "media" --exclude "secrets" --exclude "torrents" --include "torrents/files/*" "$BACKUP_DIR"

kanidm_backup "$BACKUP_DIR"/apps/kanidm.bak
postgres_backup miniflux "$BACKUP_DIR"/apps/miniflux.sql

systemctl start $SERVICES

echo -e "\n\nBACKUP COMPLETED!"