#!/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

#######################################
# Check for required deb packages to run the script.
# Globals:
#   VAR_AUTO_INSTALL
# Arguments:
#   None
#######################################
check_pkgs() {
  ### Declare Arrays, HashMaps, and Variables.
  # shellcheck disable=SC2154
  declare -A  hmp_command_packages=(
    [apt-transport-https]=apt-transport-https
    [bzip2]=bzip2
    [ca-certificates]=ca-certificates
    [curl]=curl
    [expect]=expect
    [fdisk]=fdisk
    [gdisk]=gdisk
    [git]=git
    [gpg]=gnupg
    [lsb_release]=lsb-release
    [mkfs.btrfs]=btrfs-progs
    [mkfs.ext4]=e2fsprogs
    [mkfs.fat]=dosfstools
    [mkswap]=util-linux
    [mkfs.xfs]=xfsprogs
    [parted]=parted
    [pwgen]=pwgen
    [tar]=tar
    [wget]=wget
    [whois]=whois
    [xz]=xz-utils
    [yq]=yq
  )
  declare -a  ary_missing_pkgs=() ary_unique_pkgs=()
  declare     var_cmd=""

  ### Collecting missing binaries.
  for var_cmd in "${!hmp_command_packages[@]}"; do

    if ! command -v "${var_cmd}" &>/dev/null; then

      ary_missing_pkgs+=("${hmp_command_packages[${var_cmd}]}")

    fi

  done
  do_log "debug" "file_only" "0030() [ary_missing_pkgs]='${ary_missing_pkgs[*]}'."

  ### Installing unique list of packages.
  apt-get update > /dev/null 2>&1
  if ((${#ary_missing_pkgs[@]})); then

    # shellcheck disable=SC2312
    mapfile -t ary_unique_pkgs < <(printf '%s\n' "${ary_missing_pkgs[@]}" | sort -u)
    do_log "debug" "file_only" "0030() [ary_unique_pkgs]='${ary_unique_pkgs[*]}'."
    apt-get install -y --no-install-recommends --no-install-suggests "${ary_unique_pkgs[*]}" 2>&1

  fi

  if [[ -z "$(command -v debootstrap || true)" ]]; then
    if grep -RqsE '^[[:space:]]*deb .*backports' /etc/apt/sources.list /etc/apt/sources.list.d; then
      # shellcheck disable=SC2155
      declare codename=$(lsb_release -sc)
      apt-get install -y -t "${codename}-backports" debootstrap
    else
      apt-get install -y debootstrap
    fi
  fi

  if [[ -z "$(command -v dialog || true)" ]]; then
    if ! "${VAR_AUTO_INSTALL}"; then apt-get install -y --no-install-recommends dialog; fi
  fi

  guard_dir && return 0
}
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh