#!/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

#######################################
# Function to prepare the filesystem to mount each partition on the respective path.
# Globals:
#   HMP_MOUNTPATH_DEV
#   VAR_RECIPE_STRING
#   VAR_SETUP_PART
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
setup_filesystem() {
  ### Declare Arrays and Variables.
  declare -Ag HMP_MOUNTPATH_DEV
  declare var_dev var_part var_encryption_enable var_encryption_label var_mount_enable var_mount_path var_node
  declare -a ary_devs ary_parts

  ### Iterate over all devices in the recipe.
  # shellcheck disable=SC2312
  readarray -t ary_devs < <(yq e -r ".recipe.${VAR_RECIPE_STRING}.dev | keys | .[]" "${VAR_SETUP_PART}")
  for var_dev in "${ary_devs[@]}"; do

    ### Iterate over all partitions for this device.
    # shellcheck disable=SC2312
    readarray -t ary_parts < <(yq e -r ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev} | keys | .[]" "${VAR_SETUP_PART}")
    for var_part in "${ary_parts[@]}"; do

      ### Extract parameters from YAML.
      var_encryption_enable=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.enable" "${VAR_SETUP_PART}")
      var_encryption_label=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.label"   "${VAR_SETUP_PART}")
      var_mount_enable=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.enable"           "${VAR_SETUP_PART}")
      var_mount_path=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.path"               "${VAR_SETUP_PART}")

      [[ -z "${var_mount_path}" ]] && continue

      [[ "${var_mount_enable,,}" != "true" ]] && continue

      [[ "${var_mount_path,,}" == "swap" || "${var_mount_path,,}" == "/tmp" ]] && continue

      if [[ "${var_encryption_enable}" == "true" ]]; then

        var_node="/dev/mapper/${var_encryption_label}"

      elif [[ "${var_encryption_enable}" == "false" ]]; then

        var_node="/dev/${var_dev}${var_part}"

      else

        do_log "error" "file_only" "Invalid value for encryption_enable: '${var_encryption_enable}', should be true or false."
        continue

      fi

      HMP_MOUNTPATH_DEV["${var_mount_path}"]="${var_node}"
      do_log "info" "file_only" "Saved in HashMap HMP_MOUNTPATH_DEV: '${var_mount_path}' -> '${HMP_MOUNTPATH_DEV["${var_mount_path}"]}'"

    done

  done
  return 0
}
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