backup.sh

# This script uses the following tools:
# - ccrypt
# - rclone

#!/bin/bash

# Array of directories you want to backup. It will loop through these directories and backup any
# directory inside it. Files will be ignored
directories_to_backup=("/storage/docker")

# Array of directory names you want to exclude, this uses just a simple string comparison
exclude_directories=("plex")

# Simple YYYYmmdd based foldername
time_stamp=$(date +%Y%m%d)

# If you want all files to be set to a certain owner, before backing up
# Otherwise make this an empty string
owner="sorted:docker"

# The location of your rclone config
rclone_config="/storage/docker/_scripts/rclone.conf"

# Folder where a timestamp based folder will be created, this will contain
# the encrypted archives as well.
backup_dir="/storage/backup/docker/${time_stamp}"

# File on my server, containing the encryption key for the created archives.
passkey="/storage/backup/docker/.passkey"

# Google drive rclone destination
gdrive="drive:/backup"

create_backup_dir () {
  mkdir -p "${backup_dir}"
}

compress () {
  echo "Compressing $1 => ${backup_dir}/$1.tgz"
  tar -czf ${backup_dir}/$1.tgz $1
}

encrypt () {
  echo "Encrypting ${backup_dir}/$1.tgz => $1.tgz.cpt"
  ccrypt -f -k ${passkey} ${backup_dir}/$1.tgz
}

clone () {
  echo "Clone $2.tgz.cpt => $1"
  rclone --config ${rclone_config} copy ${backup_dir}/$2.tgz.cpt $1
}

set_owner () {
  if [[ "$owner" == "" ]]; then
    echo "Skipping owner"
  else
    echo "Setting owner for $1"
    chown ${owner} $1 -R *
  fi
}

backup_directory () {
  cd $1

  for d in */ ; do
    directory=$(basename $d)

    if in_array $directory $exclude_directories; then
      echo "Skipping $directory, excluded"
    else
      if [[ "$directory" == *".old" ]]; then
        echo "Skipping $directory, marked as old"
      else
        set_owner $directory
        compress $directory
        encrypt $directory
        clone $gdrive $directory
      fi
    fi  
  done
}

in_array() {
  local dir="$1"
  shift 1
  local array=("$@")

  local value
  for value in "${array[@]}"; do
    [ "$value" = "$dir" ] && return 0
  done
  return 1
}

create_backup_dir

for i in "${directories_to_backup[@]}"; do 
  backup_directory "$i" ;
done