system-update.sh

source @bashLib@

nix_config="${HOME}/.nix-config"

_has_unit_enabled() {
  [[ "$(systemctl is-enabled "${1}" 2>/dev/null)" == "enabled" ]]
}

_log() {
  echo
  echo -e "[${YELLOW}${BOLD}${1}${RESET}] ${BOLD}${2}${RESET}"
  echo
}

_migration_remove() {
  local file="${1}"
  local ask="${2:-}"

  if [[ -e ${file} && -w ${file} ]] && ([[ ${ask} != "1" ]] || _read_boolean "Remove ${file//"${HOME}"/"~"}?"); then
    _log "migration" "remove ${file//"${HOME}"/"~"}"
    rm -vrf "${file}"
  fi
}

_pull_changes() {
  if [[ -d ${2} && -w ${2} ]]; then
    _log "pull changes" "update ${1} project"
    git -C "${2}" pull --prune
  fi
}

_show_result_diff() {
  echo

  nvd diff "${1}" ./result

  rm result
}

if _is_root; then
  _log "Please don't run this script with root!"
  exit 1
fi

# add key
#_log "keychain" "add key"
#keychain "${HOME}/.ssh/keys/id_rsa.vcs"

# update ubuntu
if _available apt; then
  _log "apt" "update"
  sudo apt update
  _log "apt" "upgrade"
  sudo apt upgrade -y
  _log "apt" "autoclean"
  sudo apt autoclean -y
  _log "apt" "autoremove"
  sudo apt autoremove -y
fi

# update projects
_pull_changes "nix-config" "${nix_config}"
#_pull_changes "atom"        "${HOME}/.atom"
#_pull_changes "files"       "${HOME}/.files"
#_pull_changes "pass"        "${HOME}/.password-store"

# nix updates
# TODO: use scripts defined in home/development/nix
if _is_nixos; then
  _log "nix" "build nixos configuration"
  sudo nix build --builders '' --verbose "git+file:///${nix_config}#nixosConfigurations.$(hostname).config.system.build.toplevel"
  _show_result_diff "/nix/var/nix/profiles/system"

  _log "nix" "switch nixos configuration"
  sudo nixos-rebuild switch --flake "git+file:///${nix_config}"
fi

if [[ ${USER} == "nix-on-droid" ]] && _available nix-on-droid; then
  _log "nix" "build nix-on-droid configuration"
  nix build --show-trace -vv "git+file:///${nix_config}#nixOnDroidConfigurations.sams9.activationPackage" --impure
  _show_result_diff "/nix/var/nix/profiles/nix-on-droid"

  _log "nix" "switch nix-on-droid configuration"
  nix-on-droid switch --flake "git+file:///${nix_config}#sams9"
fi

if ! _is_nixos && _available home-manager; then
  _log "nix" "build home-manager configuration"
  nix build --builders '' --log-format internal-json --verbose "git+file:///${nix_config}#homeConfigurations.\"$(whoami)@$(hostname)\".activationPackage" |& nom --json
  _show_result_diff "/home/${USER}/.local/state/nix/profiles/home-manager"

  _log "nix" "switch home-manager configuration"
  home-manager switch --flake "git+file:///${nix_config}" -b hm-bak
fi

# general migrations
#if [[ ! -f "${HOME}/.age/key.txt" || -L "${HOME}/.age" ]] && _read_boolean "Generate ~/.age/key.txt?"; then
#    if [[ -L "${HOME}/.age" ]]; then
#        rm -v "${HOME}/.age"
#    fi
#
#    mkdir -p "${HOME}/.age"
#    age-keygen -o "${HOME}/.age/key.txt" 2>&1 |
#        sed -e "s,^Public key: \(.*\)\$,\n# $(hostname)-${USER} = \"\1\"," |
#        tee -a "${nix_config}/.agenix.toml"
#else
#    _migration_remove "${HOME}/.age-bak" 1
#fi

#_migration_remove "${HOME}/.ssh/id_rsa"
#_migration_remove "${HOME}/.ssh/id_rsa.pub"
#_migration_remove "${HOME}/.ssh/known_hosts.old"
#_migration_remove "${HOME}/.gnupg-setup" 1

#mapfile -t to_be_removed_pkgs < <(nix-env -q --json | jq -r ".[].pname" | grep -Ev '^(home-manager|nix-on-droid)-path$')
#if [[ "${#to_be_removed_pkgs[@]}" -ne 0 ]]; then
#    _log "migration" "remove manual installed packages via nix-env"
#    nix-env --uninstall "${to_be_removed_pkgs[@]}"
#fi