run.sh

#!/usr/bin/env bash

readonly _FONTS_PKGLIST="${HOME}/dev/env/devenv.archive/pkglist/arch/fonts.pkgs"
readonly _BASE_PKGLIST="${HOME}/dev/env/devenv.archive/pkglist/arch/base.pkgs"

__is_excluded() {
  local _item _excluded
  _item="${1}"
  shift
  for _excluded in "$@"; do
    [[ "${_excluded}" == "${_item}" ]] && return 0
  done
  return 1
}

__ping() {
  local _host="${1}"
  if ping -c 1 -W 1 "${_host}" &>/dev/null; then
    echo "reached"
  else
    echo "unreached"
  fi
}

__activate() {
  local _service="${1}"
  echo
  echo "[::] info: activating ${_service} ..." >&2
  [[ "${_service}" == "bluetooth" ]] && sudo modprobe btusb
  [[ "${_service}" == "ufw" ]] && sudo ufw enable
  sudo systemctl enable --now "${_service}"
  sudo systemctl start --now "${_service}"
  [[ "${_service}" == "ufw" ]] && sudo ufw status verbose
  echo "[::] info: activating ${_service} ... done. exit(0)." >&2
  echo
}

__install() {
  local _file_path _type _items
  _file_path="${1}"
  _type="${2}"
  if [[ ! -f "${_file_path}" ]]; then
    echo
    echo "[!!] error: file not found: '${_file_path}'." >&2
    echo "[!!] error: installing ${_type} failed. exit(1)." >&2
    echo
    exit 1
  fi
  echo
  echo "[::] info: installing ${_type} ..." >&2
  mapfile -t _items < <(grep -vE "^\s*#|^\s*$" "${_file_path}")
  ((${#_items[@]} > 0)) && yay -S --noconfirm "${_items[@]}" || {
    echo "[!!] error: installing ${_type} failed. exit(1)." >&2
    echo
    exit 1
  }
  [[ "${_type}" == "fonts" ]] && sudo fc-cache -fv
  echo "[::] info: installing ${_type} ... done. exit(0)." >&2
  echo
}

__link() {
  local _src _dst _type _confirm
  _src="${1}"
  _dst="${2}"
  _type="${3}"
  echo
  echo "[::] info: linking '${_dst##*/}' config ..." >&2
  if [[ -L "${_dst}" && "$(readlink "${_dst}")" == "${_src}" ]]; then
    echo "[::] info: skipped linking '${_dst}' config - already linked. exit(0)." >&2
    echo
    return 0
  fi
  if [[ "${_type}" == "dir" && -d "${_dst}" ]] || [[ "${_type}" == "file" && -f "${_dst}" ]]; then
    echo "[~!] warn: '${_dst}' config exists. exit(1)." >&2
    _confirm=""
    read -rp "[::] info: remove it ? [y/N] " _confirm
    _confirm="${_confirm,,}"
    if [[ -n "${_confirm}" && "${_confirm}" =~ ^[Yy]$ ]]; then
      rm -rf "${_dst}"
      echo "[::] info: removed '${_dst}' config. exit(0)." >&2
    else
      echo "[::] info: skipped linking '${_dst##*/}' config. exit(0)." >&2
      echo
      return 0
    fi
  fi
  ln -s "${_src}" "${_dst}"
  echo "[::] info: linking '${_dst##*/}' config ... done. exit(0)." >&2
  echo
}

_check() {
  echo
  echo "[::] info: checking requirements ..." >&2
  local _exclude_list _value
  _exclude_list=()
  while (($# > 0)); do
    case "${1}" in
    --exclude=*)
      _value="${1#--exclude=}"
      if [[ -n "${_value}" ]]; then
        IFS=',' read -ra _exclude_list <<<"${_value}"
      else
        _exclude_list=()
      fi
      shift
      ;;
    *)
      echo "[!!] error: unknown option '${1}'. exit(1)." >&2
      echo
      shift
      exit 1
      ;;
    esac
  done
  if __is_excluded "yay" "${_exclude_list[@]}"; then
    echo "[::](yay) check: excluded. exit(0)." >&2
  else
    if [[ -n $(command -v yay) ]]; then
      echo "[>>](yay) check: passed. exit(0)." >&2
    else
      echo "[>>](yay) check: failed." >&2
      echo "[!!] error: 'yay' is not installed. exit(1)." >&2
      echo
      exit 1
    fi
  fi
  if __is_excluded "hostname" "${_exclude_list[@]}"; then
    echo "[::](hostname) check: excluded. exit(0)." >&2
  else
    if [[ "${HOSTNAME}" == "asa" ]]; then
      echo "[>>](hostname) check: passed. exit(0)." >&2
    else
      echo "[>>](hostname) check: failed." >&2
      echo "[!!] error: hostname must be 'asa' (got: '${HOSTNAME}'). exit(1)." >&2
      echo
      exit 1
    fi
  fi
  if __is_excluded "user" "${_exclude_list[@]}"; then
    echo "[::](user) check: excluded. exit(0)." >&2
  else
    if [[ "${USER}" == "akileshas" ]]; then
      echo "[>>](user) check: passed. exit(0)." >&2
    else
      echo "[>>](user) check: failed." >&2
      echo "[!!] error: user must be 'akileshas' (got: '${USER}'). exit(1)." >&2
      echo
      exit 1
    fi
  fi
  if __is_excluded "ping" "${_exclude_list[@]}"; then
    echo "[::](ping) check: excluded. exit(0)." >&2
  else
    if [[ $(__ping "8.8.8.8") == "reached" ]]; then
      echo "[>>](ping) check: passed. exit(0)." >&2
    else
      echo "[>>](ping) check: failed." >&2
      echo "[!!] error: disconnected. exit(1)." >&2
      echo
      exit 1
    fi
  fi
  echo "[::] info: checking requirements ... done. exit(0)." >&2
  echo
}

_sync() {
  echo
  echo "[::] info: updating and synchronizing the system ..." >&2
  sudo pacman -Syyu --noconfirm
  yay -Syyu --noconfirm
  echo "[::] info: updating and synchronizing the system ... done. exit(0)." >&2
  echo
}

_init() {
  sudo -v
  local _check_args _skip_check _skip_sync _value
  _check_args=()
  _skip_check=0
  _skip_sync=0
  while (($# > 0)); do
    case "${1}" in
    --check-exclude=*)
      _value="${1#--check-exclude=}"
      _check_args+=("--exclude=${_value}")
      shift
      ;;
    --skip-check)
      _skip_check=1
      shift
      ;;
    --skip-sync)
      _skip_sync=1
      shift
      ;;
    *)
      echo "[!!] error: unknown option '${1}'. exit(1)." >&2
      echo
      shift
      exit 1
      ;;
    esac
  done
  if ((${_skip_check} == 0)); then
    _check "${_check_args[@]}"
  else
    echo
    echo "[::] info: skipping check. exit(0)." >&2
    ((${_skip_sync} == 1)) && echo
  fi
  if ((${_skip_sync} == 0)); then
    _sync
  else
    echo "[::] info: skipping system synchronization. exit(0)." >&2
    echo
  fi
}

_pre() {
  _init --check-exclude=yay,hostname --skip-sync
  echo
  echo "[#!](akileshas@asa) info: preparing my system ..." >&2
  echo
  echo "[::] info: creating directories ..." >&2
  mkdir -p ~/Desktop \
    ~/.rtorrent \
    ~/Documents \
    ~/Documents/Books \
    ~/Documents/Papers \
    ~/Documents/Vault \
    ~/Documents/Vault/Personal \
    ~/Documents/Vault/Work \
    ~/Downloads \
    ~/Music \
    ~/Music/Playlist \
    ~/Music/Track \
    ~/Pictures \
    ~/Pictures/Vault \
    ~/Pictures/Wallpaper \
    ~/Pictures/Screenshots \
    ~/Public \
    ~/Templates \
    ~/Videos \
    ~/Videos/OBS \
    ~/Videos/Man \
    ~/dev \
    ~/dev/env \
    ~/dev/repos \
    ~/dev/mirrors \
    ~/dev/orgs \
    ~/dev/orgs/deepomni \
    ~/dev/orgs/deepomni/repos \
    ~/dev/orgs/deepomni/forks \
    ~/dev/orgs/deepomni/mirrors \
    ~/dev/orgs/deepomni/tmp \
    ~/dev/orgs/tinygrad \
    ~/dev/orgs/tinygrad/repos \
    ~/dev/orgs/tinygrad/forks \
    ~/dev/orgs/tinygrad/mirrors \
    ~/dev/orgs/tinygrad/tmp \
    ~/dev/tmp
  echo "[::] info: creating directories ... done. exit(0)." >&2
  echo
  echo "[#!](akileshas@asa) info: preparing my system ... done. exit(0). ;)" >&2
  echo
}

_setup() {
  local _v
  _init --check-exclude=hostname
  echo
  echo "[#!](akileshas@asa) info: setting up my system ..." >&2
  __install "${_FONTS_PKGLIST}" "fonts"
  __install "${_BASE_PKGLIST}" "base packages"
  # __activate "bluetooth"
  # __activate "paccache.timer"
  __activate "power-profiles-daemon"
  __activate "ufw"
  __link ~/dev/env/devenv.archive/bash/inputrc ~/.inputrc "file"
  __link ~/dev/env/devenv.archive/bash/login ~/.bash_login "file"
  __link ~/dev/env/devenv.archive/bash/logout ~/.bash_logout "file"
  __link ~/dev/env/devenv.archive/bash/profile ~/.bash_profile "file"
  __link ~/dev/env/devenv.archive/bash/rc ~/.bashrc "file"
  __link ~/dev/env/devenv.archive/fuzzel ~/.config/fuzzel "dir"
  for _v in 2.0 3.0 4.0; do
    __link ~/dev/env/devenv.archive/gtk/gtk-${_v} ~/.config/gtk-${_v} "dir"
  done
  __link ~/dev/env/devenv.archive/mako ~/.config/mako "dir"
  __link ~/dev/env/devenv.archive/niri ~/.config/niri "dir"
  __link ~/dev/env/devenv.archive/nvim-v0.11 ~/.config/nvim-devenv-v0.11 "dir"
  __link ~/dev/env/devenv.archive/rtorrent/.rtorrent.rc ~/.rtorrent.rc "file"
  __link ~/dev/env/devenv.archive/starship ~/.config/starship "dir"
  __link ~/dev/env/devenv.archive/tmux/.tmux.conf ~/.tmux.conf "file"
  __link ~/dev/env/devenv.archive/waybar ~/.config/waybar "dir"
  __link ~/dev/env/devenv.archive/wezterm ~/.config/wezterm "dir"
  echo "[#!](akileshas@asa) info: setting up my system ... done. exit(0). ;)" >&2
  echo
}

_install_fonts() {
  _init --check-exclude=hostname
  echo
  echo "[#!](akileshas@asa) info: installing system fonts ..." >&2
  __install "${_FONTS_PKGLIST}" "fonts"
  echo "[#!](akileshas@asa) info: installing system fonts ... done. exit(0). ;)" >&2
  echo
}

_usage() {
  echo
  echo "'akileshas@asa' system setup script" >&2
  echo
  echo "usage:" >&2
  echo "  bash ./run.sh [options]" >&2
  echo "  bash ./run.sh [command] [options]" >&2
  echo
  echo "commands:" >&2
  echo "  init [options]            initialize system (runs checks and optionally syncs)." >&2
  echo "    --check-exclude=items   exclude checks (comma-separated: yay,user,hostname)." >&2
  echo "    --skip-check            skip checks step." >&2
  echo "    --skip-sync             skip system sync step." >&2
  echo "  check [options]           run pre-flight checks (yay, user, hostname, ping)." >&2
  echo "    --exclude=items         exclude checks (comma-separated: yay,user,host)." >&2
  echo "  sync                      sync system time and update mirrors/packages." >&2
  echo "  pre                       pre-install setup (e.g. enabling services)." >&2
  echo "  setup                     run main setup logic (install packages, fonts, link dotfiles)." >&2
  # echo "  post                      post-setup steps (e.g. enable services, cleanup)." >&2
  echo "  install-fonts             install system fonts." >&2
  echo
  echo "options:" >&2
  echo "  -h, --help                show help message." >&2
  echo
}

_main() {
  case "${1}" in
  --help | -h)
    _usage
    shift
    exit 0
    ;;
  "")
    _init
    exit 0
    ;;
  esac
  echo
  echo "[\$_] info: building the system ..." >&2
  case "${1}" in
  init)
    shift
    _init "$@"
    exit 0
    ;;
  sync)
    _sync
    shift
    exit 0
    ;;
  check)
    shift
    _check "$@"
    exit 0
    ;;
  pre)
    _pre
    shift
    exit 0
    ;;
  setup)
    _setup
    shift
    exit 0
    ;;
  # post )
  #   _post
  #   shift
  #   exit 0
  #   ;;
  install-fonts)
    _install_fonts
    shift
    exit 0
    ;;
  *)
    echo "[!!] error: unknown option '${1}'. exit(1)." >&2
    echo
    shift
    exit 1
    ;;
  esac
  echo "[\$_] info: building the system ... done. exit(0). [ʘ‿ʘ]" >&2
  echo
}

_main "$@"

unset -f __is_excluded __ping __activate __install __link _check _sync _init _pre _setup _install_fonts _usage _main
unset _FONTS_PKGLIST _BASE_PKGLIST