#!/usr/bin/env bash
#
START=$(date +%s)
OS_DISTRO="$(lsb_release -ds)"
OS_ARCH="$(uname -m)"
NUM_CORES=$(nproc || echo 1)
#
##############################################################
# Title          : BBNC - BorgBackup Nextcloud               #
# Description    : BorgBackup Nextcloud for Debian/Ubuntu    #
#                                                            #
#                                                            #
# Author         : Mark Schenk <info@foxly.de>               #
# Date           : 2021-10-06 08:32                          #
# License        : MIT                                       #
# Version        : 1.1                                       #
#                                                            #
# Usage          : bash ./backup.sh                          #
echo ""                                                      #
echo " Detected OS     : $OS_DISTRO"                         #
echo " Detected Arch   : $OS_ARCH"                           #
echo " Detected Cores  : $NUM_CORES"                         #
echo ""                                                      #
##############################################################
####################
# Helper functions #
####################

displaytime() {
  local T=$1
  local D=$((T / 60 / 60 / 24))
  local H=$((T / 60 / 60 % 24))
  local M=$((T / 60 % 60))
  local S=$((T % 60))

  ((D > 0)) && printf '%d days ' $D
  ((H > 0)) && printf '%d hours ' $H
  ((M > 0)) && printf '%d minutes ' $M
  ((D > 0 || H > 0 || M > 0)) && printf 'and '

  printf '%d seconds\n' $S
}
####################
# Colors           #
####################

FSI='\033['
FRED="${FSI}1;31m"
FGREEN="${FSI}1;32m"
FYELLOW="${FSI}1;33m"
FBLUE="${FSI}1;36m"
FEND="${FSI}0m"

######################
# Check requirements #
######################

# Check if user is root
[ "$(id -u)" != "0" ] && {
  echo "Error: You must be root or use sudo to run this script"
  exit 1
}

command_exists() {
  command -v "$@" > /dev/null 2>&1
}

# Make sure, that we are on Debian or Ubuntu
if ! command_exists apt-get; then
  echo "This script cannot run on any other system than Debian or Ubuntu"
  exit 1
fi

# Checking if lsb_release is installed or install it
if ! command_exists lsb_release; then
  apt-get update && apt-get install -qq lsb-release > /dev/null 2>&1
fi
#
#
#
#                                       ToDo:
#
# Which PHP version do you use e.g. 7.3 , 7.4 , 8.0
phpversion="8.0"
# Just adjust the domain here e.g. cloud.example.org or example.org
domain="nextcloud.domain.tld"
#
# DATABASES: Remove "#" for the correct database
#
# You can back up all databases or specific databases. For all databases enter "all".  --> Optional only for MariaDB/MySQL databases stored in CloudPanel.
# databases="db1,db2 or all"
#
# echo  " Datenbank Backups "
# clpctl db:backup --databases=$databases
# echo  " Datenbank Backups erstellt! "
#
# Optional only for PostgreSQL databases that are not stored in CloudPanel.
echo -e "\e[93mcreate database backups"
databases="DATABASENAME"
postbackupdir="/home/cloudpanel/backups"
sudo -u postgres pg_dump $databases > $postbackupdir/BBNC-$(date +%d-%m-%Y_%H-%M-%S).sql
echo -e "${FGREEN}Process has been finished successfully after $(displaytime $(($(date +%s) - START)))!${FEND}"
#
# Here you can assign a password (Borg passphrase) for the Borg backup archive.
backupPassword="P@ssw0rd"
# Here you have to specify the path to the Borg repository.
backupRepo="/path/to/Repo"
#
#
#
# No Changes needed
clpLocation="/home/cloudpanel/htdocs/"
# You must edit this user if you are not using the default installation of ClouPanel. 
# Otherwise, you can leave this value unchanged.
user="clp"
#

# Nextcloud Maintenance
echo ""
sudo -u $user php$phpversion $clpLocation$domain/occ maintenance:mode --on
echo ""


export BORG_REPO=$backupRepo
export BORG_PASSPHRASE=$backupPassword
 
info() { printf "\n%s %s\n\n" "$( date )" "$*" >&2; }
trap 'echo $( date ) Backup unterbrochen >&2; exit 2' INT TERM
 
info "Start backup"
 

# Here the backup is created, adjust this as you would like to have it

borg create                         \
    --stats                         \
    --compression lz4               \
    ::'{hostname}-{now}'            \
    /home/cloudpanel/backups                        \
    /home/cloudpanel/htdocs
 
backup_exit=$?

# Nextcloud Maintenance
echo ""
sudo -u $user php$phpversion $clpLocation$domain/occ maintenance:mode --off
echo ""
echo "Ende des Backups:"
echo "Storage space usage of the backups:"
echo ""
df -h ${backupRepo}

info "Loeschen von alten Backups"
# Automatically delete old backups
borg prune                          \
    --prefix '{hostname}-'          \
    --keep-daily    7               \
    --keep-weekly   4               \
    --keep-monthly  6
 
prune_exit=$?

# Information whether the backup worked.
global_exit=$(( backup_exit > prune_exit ? backup_exit : prune_exit ))
 
if [ ${global_exit} -eq 0 ]; then
    info "\e[32mBackup und/oder Prune erfolgreich beendet"
elif [ ${global_exit} -eq 1 ]; then
    info "\e[33mBackup und/oder Prune beendet mit Warungen"
else
    info "\e[31mBackup und/oder Prune beendet mit Fehlern"
fi
echo -e "${FGREEN}Process has been finished successfully after $(displaytime $(($(date +%s) - START)))!${FEND}"
exit ${global_exit}