#!/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

#######################################
# Update generated sources.
# Every 'apt-get install' command is invoked by adding 'export INITRD=No'
# to suppress the 'update-initramfs'-Kernel-Hooks, according to the initramfs-tools manpage:
# https://manpages.debian.org/testing/initramfs-tools-core/initramfs-tools.7.en.html
# Globals:
#   RECOVERY
#   TARGET
#   VAR_RUN_RECOVERY
#   apt_updates_policy
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
update_sources() {
  ### Declare Arrays, HashMaps, and Variables.
  declare -r  var_logfile="/root/.ciss/cdi/log/4110_update_sources.log"
  declare     var_target="${TARGET}"

  ### Check for TARGET / RECOVERY.
  [[ "${VAR_RUN_RECOVERY}" == "true" ]] && var_target="${RECOVERY}"

  chroot_logger "${var_target}${var_logfile}"

  ### Update generated sources.
  # shellcheck disable=SC2312
  chroot_script "${var_target}" "
    apt-get update 2>&1 | tee -a ${var_logfile}
  "
  do_log "info" "file_only" "4110() Sources lists: updated successfully."


  ### Update unattended, security, or no unattended updates at all.
  if [[ "${apt_updates_policy,,}" == "unattended" ]]; then

    chroot_script "${var_target}" "
      export INITRD=No
      apt-get install -y --no-install-recommends --no-install-suggests unattended-upgrades 2>&1 | tee -a ${var_logfile}
    "
    do_log "info" "file_only" "4110() The update policy was set at installation time to: '${apt_updates_policy}'."

  elif [[ "${apt_updates_policy,,}" == "security" ]]; then

    chroot_script "${var_target}" "
      export INITRD=No
      apt-get install -y --no-install-recommends --no-install-suggests unattended-upgrades 2>&1 | tee -a ${var_logfile}
    "

    # shellcheck disable=SC2016
    sed -i 's/^[[:space:]]*"origin=Debian,codename=\${distro_codename},label=Debian";/\/\/ &/' "${var_target}/etc/apt/apt.conf.d/50unattended-upgrades"
    do_log "info" "file_only" "4110() The update policy was set at installation time to: '${apt_updates_policy}'."

  elif [[ "${apt_updates_policy,,}" == "none" ]]; then

    do_log "info" "file_only" "4110() The update policy was set at installation time to: '${apt_updates_policy}'."

  else

    do_log "warning" "file_only" "4110() Update policy '${apt_updates_policy}': is not supported. Using 'none' as default."

  fi

  guard_dir && return 0
}
### Prevents accidental 'unset -f'.
# shellcheck disable=SC2034
readonly -f update_sources
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh