#! /bin/bash

function init-file-repo() {
  local command="restic -r ${RESTIC_REPOSITORY}/files -v init"

  if [ -z ${CERTIFICATE_FILE} ];
  then
    ${command} --cacert ${CERTIFICATE_FILE}
  else
    ${command}
  fi
}

# First arg is the directory, second is optional for the path to a certificate file
function backup-directory() {
  local directory="$1"; shift

  local command-unlock="restic -v -r ${RESTIC_REPOSITORY}/files unlock --cleanup-cache"
  local command-backup="cd ${directory} && restic -v -r ${RESTIC_REPOSITORY}/files backup ."
  local command-forget="restic -v -r ${RESTIC_REPOSITORY}/files forget --keep-last 1 --keep-within ${RESTIC_DAYS_TO_KEEP}d --prune"

  if [ -z ${CERTIFICATE_FILE} ];
  then
    ${command-unlock} --cacert ${CERTIFICATE_FILE}
    ${command-backup} --cacert ${CERTIFICATE_FILE}
    ${command-forget} --cacert ${CERTIFICATE_FILE}
  else
    ${command-unlock}
    ${command-backup}
    ${command-forget}
  fi
}

# First arg is the directory, the remaining args are the sub-directories (relative to the first directory) to backup.
function backup-fs-from-directory() {
  local directory="$1"; shift

  local command-unlock="restic -v -r ${RESTIC_REPOSITORY}/files unlock --cleanup-cache"
  local command-backup="cd ${directory} && restic -v -r ${RESTIC_REPOSITORY}/files backup $@"
  local command-forget="restic -v -r ${RESTIC_REPOSITORY}/files forget --keep-last 1 --keep-within ${RESTIC_DAYS_TO_KEEP}d --prune"
  
  if [ -z ${CERTIFICATE_FILE} ];
  then
    ${command-unlock} --cacert ${CERTIFICATE_FILE}
    ${command-backup} --cacert ${CERTIFICATE_FILE}
    ${command-forget} --cacert ${CERTIFICATE_FILE}
  else
    ${command-unlock}
    ${command-backup}
    ${command-forget}
  fi
  
}

function restore-directory() {
  local directory="$1"; shift

  local command-unlock="restic -v -r ${RESTIC_REPOSITORY}/files unlock --cleanup-cache"
  local command-restore="restic -v -r $RESTIC_REPOSITORY/files restore latest --target ${directory}"

  if [ -z ${CERTIFICATE_FILE} ];
  then
    ${command-unlock} --cacert ${CERTIFICATE_FILE}
    rm -rf ${directory}*
    ${command-restore} --cacert ${CERTIFICATE_FILE}
  else
    ${command-unlock}
    rm -rf ${directory}*
    ${command-restore}
  fi
  
}