#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-FileType: SOURCE
# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
# SPDX-PackageName: CISS.debian.installer
# SPDX-Security-Contact: security@coresecret.eu

guard_sourcing

#######################################
# Specify the network interface card (NIC) interactively for setup.
# Globals:
#   DIR_TMP
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
check_nic() {
  # shellcheck disable=SC2312
  ip -o link show | awk -F': ' '{print $2}' | sed 's!lo!!' | sed '/^$/d' | awk '{$1=$1};1' >| "${DIR_TMP}nic.tmp"
  declare var_counter=1
  declare var_line=""
  declare var_nic=""
  declare var_radiolist=""

  while IFS= read -r var_line; do
    var_radiolist="${var_radiolist} ${var_line} ${var_counter} on "
    ((var_counter++))
  done < "${DIR_TMP}nic.tmp"

  # shellcheck disable=SC2086 disable=SC2248
  var_nic=$(dialog --ascii-lines --clear --backtitle "Specify the NIC for setup" --radiolist "NIC available" 0 0 ${var_counter} ${var_radiolist} 3>&1 1>&2 2>&3)
  clear

  do_log "info" "file_only" "1030() You have selected: '${var_nic}' - proceeding with setup."
  guard_dir && return 0
}
### Prevents accidental 'unset -f'.
# shellcheck disable=SC2034
readonly -f check_nic
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh