# -*- mode: sh; sh-basic-offset: 2; indent-tabs-mode: nil; -*-
# vim: set filetype=sh sw=2 sts=2 expandtab autoindent:
#
# restic helper for backupninja
#

HELPERS="$HELPERS restic:fast_secure_efficient_backup"

declare -a restic_includes
declare -a restic_excludes

# FUNCTIONS

function do_restic_repository() {
  REPLY=
  while [ -z "$REPLY" -o -z "$restic_repository" ]; do
    inputBox "$restic_title - Repository" "Enter Repository (eg. rclone:remote:bucket):" "$restic_repository"
    [ $? = 0 ] || return 1
    restic_repository="$REPLY"
  done
}

function do_restic_password_file() {
  REPLY=
  while [ -z "$REPLY" -o -z "$restic_password_file" ]; do
    inputBox "$restic_title - Password File" "Enter password-file (eg. /etc/restic.passwd) containing repository password:" "$restic_password_file"
    [ $? = 0 ] || return 1
    restic_password_file="$REPLY"
  done
}

function do_restic_general() {
  # set restic_repository
  do_restic_repository ; [ $? = 0 ] || return 1

  # set restic_password_file
  do_restic_password_file ; [ $? = 0 ] || return 1

  _gen_done="(DONE)"
  setDefault back
}

function do_restic_includes() {
   set -o noglob
   # choose the files to backup
   REPLY=
   while [ -z "$REPLY" ]; do
      formBegin "$restic_title - host system: includes"
         for ((i=0; i < ${#restic_includes[@]} ; i++)); do
            formItem include ${restic_includes[$i]}
         done
         formItem include
         formItem include
         formItem include
         formItem include
         formItem include
         formItem include
         formItem include
         formItem include
      formDisplay
      [ $? = 0 ] || return
      unset restic_includes
      restic_includes=($REPLY)
   done
   set +o noglob
}

function do_restic_excludes() {
   set -o noglob
   formBegin "$restic_title: host system: excludes"
     for ((i=0; i < ${#restic_excludes[@]} ; i++))
     do
       formItem exclude ${restic_excludes[$i]}
     done
     formItem exclude
     formItem exclude
     formItem exclude
     formItem exclude
     formItem exclude
     formItem exclude
     formItem exclude
     formItem exclude
   formDisplay
   [ $? = 0 ] || return
   unset restic_excludes
   restic_excludes=($REPLY)
   set +o noglob
}

function do_restic_backup() {
  do_restic_includes
  [ $? = 0 ] || return 1

  do_restic_excludes
  [ $? = 0 ] || return 1

  _back_done="(DONE)"
  setDefault finish
}


function do_restic_finish() {
  get_next_filename $configdirectory/90.restic

  cat > $next_filename <<EOF
## for more options see
## - example.restic
## - $restic_docs

# Minimal output
[general]
run_backup = yes
EOF

  echo "repository = $restic_repository" >> $next_filename
  echo "password_file = $restic_password_file" >> $next_filename

  cat >> $next_filename <<EOF

[backup]
EOF

   ## includes ##
   set -o noglob
   for ((i=0; i < ${#restic_includes[@]} ; i++)); do
      echo "include = ${restic_includes[$i]}" >> $next_filename
   done
   set +o noglob

   ## excludes ##
   set -o noglob
   for ((i=0; i < ${#restic_excludes[@]} ; i++)); do
     echo exclude = ${restic_excludes[$i]} >> $next_filename
   done
   set +o noglob

  chmod 600 $next_filename
}

function restic_main_menu() {
  while true; do
    genitem="General Restic settings $_gen_done"
    backitem="Backup settings $_back_done"
    menuBox "$restic_title" "choose a step:" \
      gen "$genitem" \
      back "$backitem" \
      finish "finish and create config file"
    [ $? = 0 ] || return
    result="$REPLY"
    case "$result" in
      "gen") do_restic_general;;
      "back") do_restic_backup;;
      "finish")
        if [[ "$_gen_done$_back_done" != "(DONE)(DONE)" ]]; then
          msgBox "$restic_title" "You cannot create the config file until all steps are completed."
        else
          do_restic_finish
          return
        fi
        ;;
    esac
  done
}

function restic_wizard {
  require_packages rclone

  # global variables
  restic_title="restic action wizard"
  restic_docs="https://restic.readthedocs.io/en/latest"

  _gen_done=
  _back_done=

  restic_main_menu
}