#!/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 || return "${ERR_GUARD_SOURCE}"

#######################################
# Check for required deb packages to run the script.
# Globals:
#   DIR_LOG
#   VAR_AUTO_INSTALL
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
check_pkgs() {
  ### Declare Arrays, HashMaps, and Variables.
  # shellcheck disable=SC2154
  declare -A  hmp_tool_pkg=(
    [btrfs]="btrfs-progs"
    [curl]="curl"
    [dmsetup]="dmsetup"
    [mkfs.vfat]="dosfstools"
    [e2label]="e2fsprogs"
    [tune2fs]="e2fsprogs"
    [fsck]="e2fsprogs"
    [expect]="expect"
    [efibootmgr]="efibootmgr"
    [fdisk]="fdisk"
    [file]="file"
    [awk]="gawk"
    [gdisk]="gdisk"
    [jq]="jq"
    [lsb_release]="lsb-release"
    [parted]="parted"
    [pwgen]="pwgen"
    [tree]="tree"
    [unzip]="unzip"
    [wget]="wget"
    [whois]="whois"
  )
  declare -a  ary_missing_pkgs=() ary_unique_pkgs=()
  declare     var_bin=""

  touch "${DIR_LOG}/0030_check_pkgs.log"

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

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

      ary_missing_pkgs+=("${hmp_tool_pkg[${var_bin}]}")

    fi

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

  ### Installing unique list of packages.
  # shellcheck disable=SC2312
  apt-get -o Acquire::PDiffs=false update 2>&1 | tee -a "${DIR_LOG}/0030_check_pkgs.log"
  if ((${#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[*]}'."
    # shellcheck disable=SC2312
    apt-get install -y --no-install-recommends --no-install-suggests "${ary_unique_pkgs[@]}" 2>&1 | tee -a "${DIR_LOG}/0030_check_pkgs.log"

  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)
      # shellcheck disable=SC2312
      apt-get install -y -t "${codename}-backports" debootstrap 2>&1 | tee -a "${DIR_LOG}/0030_check_pkgs.log"
    else
      # shellcheck disable=SC2312
      apt-get install -y debootstrap 2>&1 | tee -a "${DIR_LOG}/0030_check_pkgs.log"
    fi
  fi

  if [[ -z "$(command -v dialog || true)" ]]; then
    # shellcheck disable=SC2312
    if ! "${VAR_AUTO_INSTALL}"; then apt-get install -y --no-install-recommends dialog 2>&1 | tee -a "${DIR_LOG}/0030_check_pkgs.log"; fi
  fi

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