#!/bin/sh
set -eu

APP_NAME="lemana-vpn"
DEFAULT_RAW_BASE_URL="https://git.dokops.ru/dokril/lemana-vpn/raw/branch/main"

RAW_BASE_URL="${LEMANA_VPN_RAW_BASE_URL:-$DEFAULT_RAW_BASE_URL}"
INSTALL_BIN_DIR="${LEMANA_VPN_BIN_DIR:-$HOME/bin}"
CONFIG_DIR="${LEMANA_VPN_CONFIG_DIR:-$HOME/.config/lemana-vpn}"
OC_CONFIG_DIR="${OPENCONNECT_LITE_CONFIG_DIR:-$HOME/.config/openconnect-lite}"
DNS_CLEANUP="/usr/local/sbin/lemana-vpn-dns-cleanup"
# Read saved scalar settings without executing shell code. Explicit environment wins.
read_saved_settings() {
  [ -f "$CONFIG_DIR/env" ] || [ -f "$OC_CONFIG_DIR/config.toml" ] || return 0
  CONFIG_FILE="$CONFIG_DIR/env" OC_CONFIG_FILE="$OC_CONFIG_DIR/config.toml" python3 - <<'PYCONFIG'
import json
import os
import re
import shlex
from pathlib import Path

keys = ("MODE", "USERNAME", "BW_ITEM", "USE_TOUCHID", "AUTH_PROFILE", "CREDENTIAL_SOURCE", "USE_BITWARDEN", "LOCAL_OTP", "AUTO_SOURCE")
pattern = re.compile(r"(?m)^(?:export[ \t]+)?(LEMANA_VPN_(?:" + "|".join(keys) + r"))=[ \t]*(\"(?:\\[\s\S]|[^\"\\])*\"|'[^']*'|[^\r\n]*)[ \t]*(?:#.*)?$")
values = {}
path = Path(os.environ["CONFIG_FILE"])
if path.exists():
    for match in pattern.finditer(path.read_text()):
        key, raw = match.groups()
        if raw.startswith('"'):
            value = re.sub(r'\\([$`"\\\n])', lambda m: "" if m[1] == "\n" else m[1], raw[1:-1])
        else:
            parts = shlex.split(raw, comments=True)
            if len(parts) > 1:
                continue
            value = parts[0] if parts else ""
        values[key] = value

if not values.get("LEMANA_VPN_USERNAME") and "LEMANA_VPN_USERNAME" not in os.environ:
    path = Path(os.environ["OC_CONFIG_FILE"])
    if path.exists():
        section = re.search(r"""(?ms)^[ \t]*\[[ \t]*(?:credentials|"credentials"|'credentials')[ \t]*\][ \t]*(?:#[^\n]*)?(?:\n|\Z)(.*?)(?=^[ \t]*\[|\Z)""", path.read_text())
        match = re.search(r"""(?m)^[ \t]*(?:username|"username"|'username')[ \t]*=[ \t]*("(?:\\.|[^"\\])*"|'[^']*')""", section[1] if section else "")
        if match:
            raw = match[1]
            values["LEMANA_VPN_USERNAME"] = json.loads(raw) if raw.startswith('"') else raw[1:-1]

# Select auth behavior from one priority layer; saved legacy fields cannot override it.
if "LEMANA_VPN_MODE" not in os.environ and any("LEMANA_VPN_" + key in os.environ for key in ("AUTH_PROFILE", "CREDENTIAL_SOURCE", "USE_BITWARDEN")):
    for key in ("MODE", "AUTH_PROFILE", "CREDENTIAL_SOURCE", "USE_BITWARDEN", "LOCAL_OTP"):
        values.pop("LEMANA_VPN_" + key, None)
if "LEMANA_VPN_MODE" in os.environ:
    values.pop("LEMANA_VPN_LOCAL_OTP", None)
for key, value in values.items():
    if key not in os.environ:
        print(key + "=" + shlex.quote(value))
        if key == "LEMANA_VPN_USERNAME":
            print("SAVED_USERNAME=" + shlex.quote(value))
PYCONFIG
}
saved_settings="$(read_saved_settings)"
eval "$saved_settings"
USERNAME="${LEMANA_VPN_USERNAME:-}"
BW_ITEM="${LEMANA_VPN_BW_ITEM:-LM LDAP}"
MODE="${LEMANA_VPN_MODE:-}"
LOCAL_OTP="${LEMANA_VPN_LOCAL_OTP:-0}"
AUTO_SOURCE="${LEMANA_VPN_AUTO_SOURCE:-keychain}"
MANUAL_FORCED=0
CREDENTIAL_SOURCE="${LEMANA_VPN_CREDENTIAL_SOURCE:-}"
AUTH_PROFILE="${LEMANA_VPN_AUTH_PROFILE:-manual}"
USE_BITWARDEN="${LEMANA_VPN_USE_BITWARDEN:-0}"
USE_TOUCHID="${LEMANA_VPN_USE_TOUCHID:-0}"
INSTALL_SUDOERS=1
INSTALL_ALIASES=1
INSTALL_APP=1
INSTALL_AUTOSTART=1
CONFIGURE_LOGIN=0
CONFIGURE_KEYCHAIN=0
IMPORT_YANDEX_KEY=0
DRY_RUN=0
FORCE=0
INTERACTIVE=auto
BITWARDEN_FORCED=0
MODE_FORCED=0
CREDENTIAL_SOURCE_FORCED=0
AUTH_PROFILE_FORCED=0
TOUCHID_FORCED=0
[ "${LEMANA_VPN_USE_TOUCHID+x}" != x ] || TOUCHID_FORCED=1
SUDOERS_FORCED=0
SHELL_FORCED=0
APP_FORCED=0
AUTOSTART_FORCED=0
CONFIGURE_KEYCHAIN_FORCED=0
CONFIGURE_LOGIN_FORCED=0
APP_DIR="${LEMANA_VPN_APP_DIR:-$HOME/Applications/LemanaVPN.app}"
LAUNCH_AGENT="$HOME/Library/LaunchAgents/ru.dokops.LemanaVPN.plist"

if [ -t 1 ] && [ -z "${NO_COLOR:-}" ] && [ "${TERM:-}" != "dumb" ]; then
  C_RESET="$(printf '\033[0m')"
  C_BOLD="$(printf '\033[1m')"
  C_DIM="$(printf '\033[2m')"
  C_RED="$(printf '\033[31m')"
  C_GREEN="$(printf '\033[32m')"
  C_YELLOW="$(printf '\033[33m')"
  C_BLUE="$(printf '\033[34m')"
  C_CYAN="$(printf '\033[36m')"
else
  C_RESET=""
  C_BOLD=""
  C_DIM=""
  C_RED=""
  C_GREEN=""
  C_YELLOW=""
  C_BLUE=""
  C_CYAN=""
fi

if [ "${LEMANA_VPN_NO_EMOJI:-0}" = "1" ]; then
  E_STEP=">"
  E_INFO="i"
  E_OK="+"
  E_WARN="!"
  E_SKIP="-"
  E_ERROR="x"
else
  E_STEP="➡️"
  E_INFO="ℹ️"
  E_OK="✅"
  E_WARN="⚠️"
  E_SKIP="⏭️"
  E_ERROR="❌"
fi

usage() {
  cat <<'USAGE'
Usage:
  sh install.sh [options]

Options:
  --with-bitwarden          Install/use Bitwarden CLI module as an optional credential source
  --without-bitwarden       Do not install/use Bitwarden CLI (default)
  --mode VALUE              Profile: manual-keychain, keychain-auto or bitwarden-auto
  --credential-source VALUE  Legacy credential source: none, keychain, or bitwarden
  --auth-profile VALUE      Legacy compatibility profile
  --with-touchid            Install/use keychain-fingerprint Touch ID helper with Bitwarden
  --without-touchid         Do not install/use Touch ID helper
  --configure-login         Prompt for LDAP username/password after install
  --configure-keychain      Prompt for LDAP password and permanent 2FA setup code after install
  --import-yandex-key       Import a local Yandex Key backup after login setup (Terminal required)
  --username VALUE          Corporate LDAP username (otherwise asked on first Terminal connection)
  --bw-item VALUE           Bitwarden item name (default: LM LDAP)
  --raw-base-url URL        Raw file base URL for curl installs
  --no-sudoers              Do not install sudoers rules
  --no-shell                Do not update ~/.zshrc aliases
  --with-app                Build/install macOS menu bar app (default)
  --without-app             Do not build/install macOS menu bar app
  --with-autostart          Install LaunchAgent for menu bar app (default)
  --without-autostart       Do not install LaunchAgent
  --interactive             Ask before installing optional missing modules
  --non-interactive         Use selected/default modules without prompts
  --minimal                 Manual-first install without optional credential helpers
  --dry-run                 Print actions without changing files
  --force                   Reinstall files even when present
  -h, --help                Show this help

Examples:
  sh install.sh
  sh install.sh --mode manual-keychain --configure-login
  sh install.sh --mode bitwarden-auto
  sh install.sh --configure-login
  sh install.sh --without-touchid
USAGE
}

apply_mode_defaults() {
  case "$MODE" in
    manual-keychain)
      LOCAL_OTP=0
      AUTH_PROFILE="saved-login"
      CREDENTIAL_SOURCE="keychain"
      USE_BITWARDEN=0
      USE_TOUCHID=0
      ;;
    keychain-auto)
      AUTH_PROFILE="auto"
      CREDENTIAL_SOURCE="keychain"
      USE_BITWARDEN=0
      USE_TOUCHID=0
      LOCAL_OTP=1
      AUTO_SOURCE=keychain
      ;;
    bitwarden-auto)
      LOCAL_OTP=0
      AUTO_SOURCE=bitwarden
      AUTH_PROFILE="auto"
      CREDENTIAL_SOURCE="bitwarden"
      USE_BITWARDEN=1
      if [ "$TOUCHID_FORCED" -eq 0 ]; then
        USE_TOUCHID=1
      fi
      ;;
    *)
      echo "--mode requires manual-keychain, keychain-auto or bitwarden-auto" >&2
      exit 1
      ;;
  esac
}

normalize_mode_from_legacy() {
  if [ -z "$MODE" ]; then
    [ -n "$CREDENTIAL_SOURCE" ] || { [ "$USE_BITWARDEN" -ne 1 ] || CREDENTIAL_SOURCE=bitwarden; }
    case "$CREDENTIAL_SOURCE:$AUTH_PROFILE" in
      bitwarden:*|*:auto)
        MODE="bitwarden-auto"
        ;;
      *)
        MODE="manual-keychain"
        ;;
    esac
  fi
  if [ "$MODE" = manual-keychain ] && [ "$LOCAL_OTP" = 1 ] && [ "$MANUAL_FORCED" -eq 0 ]; then
    MODE=keychain-auto
  fi
  apply_mode_defaults
}

while [ "$#" -gt 0 ]; do
  case "$1" in
    --with-bitwarden)
      MODE="bitwarden-auto"
      MODE_FORCED=1
      apply_mode_defaults
      BITWARDEN_FORCED=1
      CREDENTIAL_SOURCE_FORCED=1
      ;;
    --without-bitwarden)
      MANUAL_FORCED=1
      MODE="manual-keychain"
      MODE_FORCED=1
      apply_mode_defaults
      USE_BITWARDEN=0
      USE_TOUCHID=0
      BITWARDEN_FORCED=1
      ;;
    --mode)
      shift
      [ "$#" -gt 0 ] || { echo "--mode requires manual-keychain, keychain-auto or bitwarden-auto" >&2; exit 1; }
      MODE="$1"
      [ "$MODE" != manual-keychain ] || MANUAL_FORCED=1
      MODE_FORCED=1
      apply_mode_defaults
      ;;
    --credential-source)
      shift
      [ "$#" -gt 0 ] || { echo "--credential-source requires none, keychain, or bitwarden" >&2; exit 1; }
      CREDENTIAL_SOURCE="$1"
      CREDENTIAL_SOURCE_FORCED=1
      case "$CREDENTIAL_SOURCE" in
        none|keychain)
          if [ "$MODE_FORCED" -eq 0 ]; then
            MODE="manual-keychain"
            MANUAL_FORCED=1
          fi
          ;;
        bitwarden)
          if [ "$MODE_FORCED" -eq 0 ]; then
            MODE="bitwarden-auto"
          fi
          ;;
        *)
          echo "--credential-source requires none, keychain, or bitwarden" >&2
          exit 1
          ;;
      esac
      ;;
    --auth-profile)
      shift
      [ "$#" -gt 0 ] || { echo "--auth-profile requires manual, saved-login, saved-totp, or auto" >&2; exit 1; }
      AUTH_PROFILE="$1"
      AUTH_PROFILE_FORCED=1
      case "$AUTH_PROFILE" in
        manual|saved-login)
          if [ "$MODE_FORCED" -eq 0 ]; then
            MODE="manual-keychain"
            MANUAL_FORCED=1
          fi
          ;;
        saved-totp|auto)
          if [ "$MODE_FORCED" -eq 0 ]; then
            MODE="bitwarden-auto"
          fi
          ;;
        *)
          echo "--auth-profile requires manual, saved-login, saved-totp, or auto" >&2
          exit 1
          ;;
      esac
      ;;
    --with-touchid)
      USE_TOUCHID=1
      TOUCHID_FORCED=1
      ;;
    --without-touchid)
      USE_TOUCHID=0
      TOUCHID_FORCED=1
      ;;
    --configure-login)
      MANUAL_FORCED=1
      if [ "$MODE_FORCED" -eq 0 ]; then
        MODE="manual-keychain"
      fi
      CONFIGURE_LOGIN=1
      CONFIGURE_LOGIN_FORCED=1
      CONFIGURE_KEYCHAIN=0
      ;;
    --import-yandex-key)
      IMPORT_YANDEX_KEY=1
      if [ "$MODE_FORCED" -eq 0 ]; then
        MODE="keychain-auto"
      fi
      MODE_FORCED=1
      ;;
    --configure-keychain)
      if [ "$MODE_FORCED" -eq 0 ]; then
        MODE="bitwarden-auto"
      fi
      CONFIGURE_KEYCHAIN=1
      CONFIGURE_LOGIN=0
      CONFIGURE_KEYCHAIN_FORCED=1
      ;;
    --username)
      shift
      [ "$#" -gt 0 ] || { echo "--username requires a value" >&2; exit 1; }
      USERNAME="$1"
      ;;
    --bw-item)
      shift
      [ "$#" -gt 0 ] || { echo "--bw-item requires a value" >&2; exit 1; }
      BW_ITEM="$1"
      ;;
    --raw-base-url)
      shift
      [ "$#" -gt 0 ] || { echo "--raw-base-url requires a value" >&2; exit 1; }
      RAW_BASE_URL="${1%/}"
      ;;
    --no-sudoers)
      INSTALL_SUDOERS=0
      SUDOERS_FORCED=1
      ;;
    --no-shell)
      INSTALL_ALIASES=0
      SHELL_FORCED=1
      ;;
    --with-app)
      INSTALL_APP=1
      APP_FORCED=1
      ;;
    --without-app)
      INSTALL_APP=0
      INSTALL_AUTOSTART=0
      APP_FORCED=1
      AUTOSTART_FORCED=1
      ;;
    --with-autostart)
      INSTALL_AUTOSTART=1
      AUTOSTART_FORCED=1
      ;;
    --without-autostart)
      INSTALL_AUTOSTART=0
      AUTOSTART_FORCED=1
      ;;
    --interactive) INTERACTIVE=1 ;;
    --non-interactive) INTERACTIVE=0 ;;
    --minimal)
      MANUAL_FORCED=1
      MODE="manual-keychain"
      MODE_FORCED=1
      apply_mode_defaults
      BITWARDEN_FORCED=1
      CREDENTIAL_SOURCE_FORCED=1
      AUTH_PROFILE_FORCED=1
      TOUCHID_FORCED=1
      ;;
    --dry-run) DRY_RUN=1 ;;
    --force) FORCE=1 ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      echo "Unknown option: $1" >&2
      usage >&2
      exit 1
      ;;
  esac
  shift
done

[ -z "$MODE" ] || MODE_FORCED=1
normalize_mode_from_legacy

log() {
  printf '%s\n' "$*"
}

color_line() {
  color="$1"
  shift
  printf '%s%s%s\n' "$color" "$*" "$C_RESET"
}

log_step() {
  color_line "$C_BOLD$C_CYAN" "$E_STEP $*"
}

log_info() {
  color_line "$C_BLUE" "$E_INFO $*"
}

log_detail() {
  color_line "$C_DIM" "   $*"
}

log_ok() {
  color_line "$C_GREEN" "$E_OK $*"
}

log_warn() {
  color_line "$C_YELLOW" "$E_WARN $*"
}

log_skip() {
  color_line "$C_DIM" "$E_SKIP $*"
}

die() {
  printf '%s%s ERROR: %s%s\n' "$C_RED" "$E_ERROR" "$*" "$C_RESET" >&2
  exit 1
}

run() {
  if [ "$DRY_RUN" -eq 1 ]; then
    printf '+'
    for arg in "$@"; do
      printf ' %s' "$arg"
    done
    printf '\n'
    return 0
  fi
  "$@"
}

need_cmd() {
  command -v "$1" >/dev/null 2>&1 || die "Command not found: $1"
}

tty_available() {
  { [ -r /dev/tty ] && [ -w /dev/tty ]; } || return 1
  { : <> /dev/tty; } 2>/dev/null
}

has_tty() {
  tty_available || [ -t 0 ]
}

interactive_enabled() {
  case "$INTERACTIVE" in
    1) has_tty ;;
    0) return 1 ;;
    auto) has_tty ;;
    *) return 1 ;;
  esac
}

prompt_printf() {
  if tty_available; then
    printf "$@" > /dev/tty
  else
    printf "$@"
  fi
}

prompt_read_answer() {
  if tty_available; then
    IFS= read -r answer < /dev/tty || answer=""
  else
    IFS= read -r answer || answer=""
  fi
}

preserve_existing_username() {
  if [ -n "${SAVED_USERNAME:-}" ] && [ "$USERNAME" = "$SAVED_USERNAME" ]; then
    log_info "Preserving existing LDAP username from previous config"
  fi
}

yes_no() {
  prompt="$1"
  default_answer="$2"
  [ "$default_answer" = "y" ] || [ "$default_answer" = "n" ] || die "Invalid yes_no default: $default_answer"

  if ! interactive_enabled; then
    [ "$default_answer" = "y" ]
    return $?
  fi

  if [ "$default_answer" = "y" ]; then
    suffix="[Y/n]"
  else
    suffix="[y/N]"
  fi

  while :; do
    prompt_printf '%s%s %s%s ' "$C_BOLD" "$prompt" "$suffix" "$C_RESET"
    prompt_read_answer
    case "$answer" in
      "") [ "$default_answer" = "y" ]; return $? ;;
      y|Y|yes|YES|Yes|д|Д|да|Да|ДА) return 0 ;;
      n|N|no|NO|No|н|Н|нет|Нет|НЕТ) return 1 ;;
      *) prompt_printf 'Введите y или n.\n' ;;
    esac
  done
}

print_install_intro() {
  log_step "Lemana VPN установит приложение для подключения к корпоративному VPN"
  log_detail "Есть два режима: ручной ввод кода и автоматический вход. Для автоматического входа выберите ключ на Mac или Bitwarden."
  log_detail "Ключ из Яндекс Ключа можно импортировать отдельно, без Bitwarden."
}

choose_auth_profile_interactive() {
  log_step "Выбираю режим подключения"
  log_detail "Если не уверены, просто нажмите Enter: будет ручной режим с сохранением логина и пароля."

  while :; do
    prompt_printf '\n'
    prompt_printf '%sКакой режим использовать?%s\n' "$C_BOLD" "$C_RESET"
    prompt_printf '  1) Ручной вход: запомнить логин и пароль на этом Mac (рекомендуется)\n'
    prompt_printf '     Логин и пароль подставятся из macOS Keychain. Одноразовый код вводится руками каждый раз.\n\n'
    prompt_printf '  2) Автоматический вход\n'
    prompt_printf '     Пароль и код подставляются автоматически, форма отправляется без ручного ввода.\n'
    prompt_printf '%sВыбор [1/2, Enter=1]:%s ' "$C_BOLD" "$C_RESET"

    prompt_read_answer
    case "$answer" in
      ""|1)
        MANUAL_FORCED=1
        MODE=manual-keychain
        apply_mode_defaults
        CONFIGURE_LOGIN=1
        CONFIGURE_KEYCHAIN=0
        ;;
      2)
        prompt_printf 'Источник данных: 1) Ключ на этом Mac, 2) Bitwarden [1/2, Enter=1]: '
        prompt_read_answer
        case "$answer" in
          ""|1) MODE=keychain-auto; CONFIGURE_LOGIN=1 ;;
          2) MODE=bitwarden-auto; CONFIGURE_LOGIN=0 ;;
          *) prompt_printf 'Введите 1 или 2.\n'; continue ;;
        esac
        apply_mode_defaults
        CONFIGURE_KEYCHAIN=0
        ;;
      *)
        prompt_printf 'Введите 1 или 2. Если не уверены, нажмите Enter.\n'
        continue
        ;;
    esac
    break
  done

  case "$MODE" in
    manual-keychain)
      log_info "Режим подключения: логин и пароль в macOS Keychain, одноразовый код вручную"
      ;;
    keychain-auto)
      log_info "Режим подключения: автоматический, ключ на этом Mac"
      ;;
    bitwarden-auto)
      log_info "Режим подключения: автоматический, Bitwarden"
      ;;
  esac
}

bool_word() {
  if "$@" >/dev/null 2>&1; then
    printf 'yes'
  else
    printf 'no'
  fi
}

keychain_has() {
  security find-generic-password -s "$1" -a "$2" >/dev/null 2>&1
}

zsh_aliases_installed() {
  [ -f "$HOME/.zshrc" ] && grep -q '^# >>> lemana-vpn$' "$HOME/.zshrc"
}

print_detected_state() {
  log_step "Проверяю установленное окружение"
  log_detail "Так установщик понимает, какие модули уже есть, а по каким нужно спросить."
  log "Detected state:"
  log "  openconnect:       $(bool_word command -v openconnect)"
  log "  pipx:              $(bool_word command -v pipx)"
  log "  openconnect-lite:  $(bool_word test -x "$HOME/.local/bin/openconnect-lite")"
  log "  Bitwarden CLI:     $(bool_word command -v bw)"
  log "  Touch ID helper:   $(bool_word test -x "$INSTALL_BIN_DIR/keychain-fingerprint")"
  log "  DNS cleanup:       $(bool_word test -x "$DNS_CLEANUP")"
  log "  sudoers:           $(bool_word test -f /etc/sudoers.d/lemana-vpn-openconnect)/$(bool_word test -f /etc/sudoers.d/lemana-vpn-dns)"
  log "  shell aliases:     $(bool_word zsh_aliases_installed)"
  log "  Swift:             $(bool_word command -v swift)"
  log "  Menu Bar app:      $(bool_word test -x "$APP_DIR/Contents/MacOS/LemanaVPN")"
  log "  LaunchAgent:       $(bool_word test -f "$LAUNCH_AGENT")"
  log "  Keychain password: $(bool_word keychain_has openconnect-lite "$USERNAME")"
  log "  Keychain 2FA setup: $(bool_word keychain_has openconnect-lite "totp/$USERNAME")"
}

choose_modules() {
  if interactive_enabled; then
    print_install_intro
  fi
  print_detected_state

  case "$AUTH_PROFILE" in
    manual|saved-login|saved-totp|auto) ;;
    *)
      die "Unknown auth profile: $AUTH_PROFILE"
      ;;
  esac

  if [ "$CREDENTIAL_SOURCE_FORCED" -eq 0 ] && [ "$CREDENTIAL_SOURCE" = "none" ] && [ "$AUTH_PROFILE" != "manual" ]; then
    CREDENTIAL_SOURCE=keychain
  fi

  case "$CREDENTIAL_SOURCE" in
    none)
      USE_BITWARDEN=0
      USE_TOUCHID=0
      ;;
    bitwarden)
      USE_BITWARDEN=1
      ;;
    keychain)
      USE_BITWARDEN=0
      USE_TOUCHID=0
      ;;
    *)
      die "Unknown credential source: $CREDENTIAL_SOURCE"
      ;;
  esac

  if ! interactive_enabled; then
    log_skip "Interactive prompts: off"
    return 0
  fi

  log_info "Interactive prompts: on"
  log_detail "Установщик проведёт по понятному выбору режима входа; флаги командной строки имеют приоритет."

  if [ "$MODE_FORCED" -eq 0 ] && [ "$AUTH_PROFILE_FORCED" -eq 0 ] && [ "$CREDENTIAL_SOURCE_FORCED" -eq 0 ]; then
    choose_auth_profile_interactive
  fi

  if [ "$CREDENTIAL_SOURCE" = "bitwarden" ] && [ "$BITWARDEN_FORCED" -eq 0 ] && ! command -v bw >/dev/null 2>&1; then
    if yes_no "Bitwarden не найден на этом Mac. Установить его сейчас?" n; then
      MODE=bitwarden-auto
      apply_mode_defaults
    else
      MODE=manual-keychain
      apply_mode_defaults
      CONFIGURE_LOGIN=1
    fi
  fi

  if [ "$TOUCHID_FORCED" -eq 0 ]; then
    if [ "$USE_BITWARDEN" -eq 1 ]; then
      if ! [ -x "$INSTALL_BIN_DIR/keychain-fingerprint" ]; then
        if yes_no "Разрешить Touch ID для открытия Bitwarden?" y; then
          USE_TOUCHID=1
        else
          USE_TOUCHID=0
        fi
      fi
    else
      USE_TOUCHID=0
    fi
  fi

  if [ "$SUDOERS_FORCED" -eq 0 ]; then
    if ! [ -f /etc/sudoers.d/lemana-vpn-openconnect ] || ! [ -f /etc/sudoers.d/lemana-vpn-dns ]; then
      if yes_no "Настроить sudoers для VPN/DNS без повторного sudo-пароля?" y; then
        INSTALL_SUDOERS=1
      else
        INSTALL_SUDOERS=0
      fi
    fi
  fi

  if [ "$SHELL_FORCED" -eq 0 ] && ! zsh_aliases_installed; then
    if yes_no "Добавить алиасы vpn/vpn-debug/vpn-fix-dns в ~/.zshrc?" y; then
      INSTALL_ALIASES=1
    else
      INSTALL_ALIASES=0
    fi
  fi

  if [ "$APP_FORCED" -eq 0 ] && ! [ -x "$APP_DIR/Contents/MacOS/LemanaVPN" ]; then
    if yes_no "Swift Menu Bar app не найден. Собрать и установить LemanaVPN.app?" y; then
      INSTALL_APP=1
    else
      INSTALL_APP=0
      INSTALL_AUTOSTART=0
    fi
  fi

  if [ "$AUTOSTART_FORCED" -eq 0 ] && [ "$INSTALL_APP" -eq 1 ] && ! [ -f "$LAUNCH_AGENT" ]; then
    if yes_no "Включить автозапуск LemanaVPN.app при логине?" y; then
      INSTALL_AUTOSTART=1
    else
      INSTALL_AUTOSTART=0
    fi
  fi

  if [ "$CONFIGURE_LOGIN_FORCED" -eq 0 ] && [ "$MODE" != "bitwarden-auto" ] && [ "$CONFIGURE_LOGIN" -eq 0 ]; then
    if ! keychain_has openconnect-lite "$USERNAME"; then
      if yes_no "Запомнить логин и пароль в macOS Keychain после установки?" y; then
        CONFIGURE_LOGIN=1
      fi
    fi
  fi

  if [ "$CONFIGURE_KEYCHAIN_FORCED" -eq 0 ] && [ "$MODE" = "bitwarden-auto" ] && [ "$CREDENTIAL_SOURCE" = "keychain" ] && [ "$CONFIGURE_KEYCHAIN" -eq 0 ]; then
    if ! keychain_has openconnect-lite "$USERNAME" || ! keychain_has openconnect-lite "totp/$USERNAME"; then
      if yes_no "Сохранить пароль и постоянный код настройки 2FA в macOS Keychain после установки?" y; then
        CONFIGURE_KEYCHAIN=1
      fi
    fi
  fi
  if [ "$MODE" != "bitwarden-auto" ] && [ "$IMPORT_YANDEX_KEY" -eq 0 ] && ! keychain_has openconnect-lite "totp/$USERNAME"; then
    import_default=n
    [ "$MODE" != keychain-auto ] || import_default=y
    if yes_no "Импортировать код из Яндекс Ключа и включить автоматический вход?" "$import_default"; then
      IMPORT_YANDEX_KEY=1
    fi
  fi
}

script_dir() {
  case "$0" in
    */*) cd "$(dirname "$0")" 2>/dev/null && pwd ;;
    *)
      if [ -f "$PWD/$0" ]; then
        pwd
      else
        return 1
      fi
      ;;
  esac
}

download_file() {
  src="$1"
  dst="$2"
  local_dir="$(script_dir 2>/dev/null || true)"

  if [ -n "$local_dir" ] && [ -f "$local_dir/$src" ]; then
    run cp "$local_dir/$src" "$dst"
    return 0
  fi

  if [ "${LEMANA_VPN_USE_LOCAL_FILES:-0}" = "1" ] && [ -f "$PWD/$src" ]; then
    run cp "$PWD/$src" "$dst"
    return 0
  fi

  need_cmd curl
  run curl -fsSL "$RAW_BASE_URL/$src" -o "$dst"
}

write_file() {
  dst="$1"
  content="$2"
  if [ "$DRY_RUN" -eq 1 ]; then
    printf '+ write %s\n' "$dst"
    return 0
  fi
  printf '%s\n' "$content" > "$dst"
}

render_template_file() {
  src="$1"
  dst="$2"
  if [ "$DRY_RUN" -eq 1 ]; then
    printf '+ render %s -> %s\n' "$src" "$dst"
    return 0
  fi
  USERNAME="$USERNAME" BW_ITEM="$BW_ITEM" DNS_CLEANUP="$DNS_CLEANUP" USE_TOUCHID="$USE_TOUCHID" AUTO_SOURCE="$AUTO_SOURCE" \
    CONFIG_FILE="$CONFIG_DIR/env" python3 - "$src" "$dst" <<'PYCONFIG'
import os
import re
import sys
from pathlib import Path


def shell_value(value):
    return value.replace("\\", "\\\\").replace('"', '\\"').replace("$", "\\$").replace("`", "\\`")


rendered = Path(sys.argv[1]).read_text()
rendered = re.sub(r"\{\{(USERNAME|BW_ITEM|DNS_CLEANUP|USE_TOUCHID|AUTO_SOURCE)\}\}", lambda m: shell_value(os.environ[m[1]]), rendered)
keys = re.findall(r"(?m)^(LEMANA_VPN_\w+)=", rendered)
existing = Path(os.environ["CONFIG_FILE"])
kept = ""
if existing.exists():
    pattern = r"(?m)^(?:export[ \t]+)?(?:" + "|".join(keys) + r")=[ \t]*(?:\"(?:\\[\s\S]|[^\"\\])*\"|'[^']*'|[^\r\n]*)[ \t]*\n?"
    kept = re.sub(pattern, "", existing.read_text()).rstrip()
Path(sys.argv[2]).write_text((kept + "\n" if kept else "") + rendered)
PYCONFIG
}

install_homebrew_packages() {
  need_cmd brew

  log_step "Проверяю Homebrew-зависимости"
  log_detail "openconnect нужен как VPN-клиент, pipx — для изолированной установки openconnect-lite."

  for pkg in openconnect pipx; do
    if brew list "$pkg" >/dev/null 2>&1; then
      log_ok "Homebrew package already installed: $pkg"
    else
      log_info "Installing Homebrew package: $pkg"
      run brew install "$pkg"
    fi
  done

  if [ "$USE_BITWARDEN" -eq 1 ]; then
    if brew list bitwarden-cli >/dev/null 2>&1; then
      log_ok "Homebrew package already installed: bitwarden-cli"
    else
      log_info "Installing Homebrew package: bitwarden-cli"
      log_detail "Bitwarden CLI нужен, чтобы брать LDAP-пароль и постоянный код настройки 2FA из item '$BW_ITEM'."
      run brew install bitwarden-cli
    fi
  else
    log_skip "Bitwarden module disabled; пропускаю bitwarden-cli."
  fi
}

install_openconnect_lite() {
  need_cmd pipx

  log_step "Проверяю openconnect-lite"
  log_detail "openconnect-lite открывает SAML/Keycloak SSO и передаёт полученную сессию в openconnect."

  if [ -x "$HOME/.local/bin/openconnect-lite" ] && [ "$FORCE" -eq 0 ]; then
    log_ok "openconnect-lite already installed"
  else
    log_info "Installing openconnect-lite via pipx"
    run pipx install openconnect-lite
  fi

  if pipx --help 2>/dev/null | grep -q ' pin '; then
    log_detail "Закрепляю pipx package, чтобы случайное обновление не сломало SSO-патчи."
    run pipx pin openconnect-lite >/dev/null 2>&1 || true
  fi
}

install_cli() {
  tmp="$1"
  log_step "Обновляю CLI и uninstall helper"
  log_detail "CLI управляет подключением, статусом модулей, Bitwarden/Keychain sync и runtime-патчами."

  run mkdir -p "$INSTALL_BIN_DIR"

  download_file "bin/vpn-lemanapro.sh" "$tmp/vpn-lemanapro.sh"
  run install -m 755 "$tmp/vpn-lemanapro.sh" "$INSTALL_BIN_DIR/vpn-lemanapro.sh"
  log_ok "CLI installed: $INSTALL_BIN_DIR/vpn-lemanapro.sh"

  download_file "bin/lemana-vpn-import-yandex.py" "$tmp/lemana-vpn-import-yandex.py"
  run install -m 644 "$tmp/lemana-vpn-import-yandex.py" "$INSTALL_BIN_DIR/lemana-vpn-import-yandex.py"

  download_file "uninstall.sh" "$tmp/uninstall.sh"
  run install -m 755 "$tmp/uninstall.sh" "$INSTALL_BIN_DIR/uninstall-lemana-vpn.sh"
  log_ok "Uninstall helper installed: $INSTALL_BIN_DIR/uninstall-lemana-vpn.sh"
}

install_config() {
  tmp="$1"
  mode_template="$tmp/$MODE.env"
  log_step "Записываю конфигурацию"
  log_detail "Здесь сохраняются выбранный режим входа, LDAP username если он задан, и профиль openconnect-lite для Keycloak SSO."

  run mkdir -p "$CONFIG_DIR" "$OC_CONFIG_DIR"

  download_file "templates/openconnect-lite-config.toml" "$tmp/openconnect-lite-config.toml"
  if [ "$DRY_RUN" -eq 1 ]; then
    printf '+ render %s/config.toml\n' "$OC_CONFIG_DIR"
  else
    USERNAME="$USERNAME" python3 - "$OC_CONFIG_DIR/config.toml" "$tmp/openconnect-lite-config.toml" "$tmp/config.toml" <<'PYCONFIG'
import json
import os
import re
import sys
from pathlib import Path

existing, template, destination = map(Path, sys.argv[1:])
text = (existing if existing.exists() else template).read_text()
username = "username = " + json.dumps(os.environ["USERNAME"], ensure_ascii=False)
section = re.search(r"""(?ms)^[ \t]*\[[ \t]*(?:credentials|"credentials"|'credentials')[ \t]*\][ \t]*(?:#[^\n]*)?(?:\n|\Z)(.*?)(?=^[ \t]*\[|\Z)""", text)
if section:
    body = section[1]
    username_key = r"""(?m)^[ \t]*(?:username|"username"|'username')[ \t]*="""
    if re.search(username_key, body):
        body = re.sub(username_key + r".*$", lambda _: username, body)
    else:
        body = username + "\n" + body
    prefix = text[:section.start(1)]
    text = prefix + ("" if prefix.endswith("\n") else "\n") + body + text[section.end(1):]
else:
    text = text.rstrip() + "\n\n[credentials]\n" + username + "\n"
destination.write_text(text)
PYCONFIG
  fi

  download_file "templates/$MODE.env" "$mode_template"
  render_template_file "$mode_template" "$tmp/env"
  run install -m 600 "$tmp/config.toml" "$OC_CONFIG_DIR/config.toml"
  run install -m 600 "$tmp/env" "$CONFIG_DIR/env"
  log_ok "Config installed: $CONFIG_DIR/env"
}

install_dns_cleanup() {
  tmp="$1"
  dns_cleanup_dir="$(dirname "$DNS_CLEANUP")"

  log_step "Устанавливаю DNS cleanup wrapper"
  log_detail "Wrapper сохраняет прежние DNS и восстанавливает изменения VPN после отключения или перезагрузки."
  log_detail "macOS может запросить sudo-пароль для записи в $dns_cleanup_dir."

  download_file "libexec/lemana-vpn-dns-cleanup" "$tmp/lemana-vpn-dns-cleanup"
  run sudo install -d -m 755 -o root -g wheel "$dns_cleanup_dir"
  log_info "Installing DNS cleanup wrapper: $DNS_CLEANUP"
  run sudo install -m 755 -o root -g wheel "$tmp/lemana-vpn-dns-cleanup" "$DNS_CLEANUP"
  log_ok "DNS cleanup wrapper installed"
}

install_sudoers() {
  if [ "$INSTALL_SUDOERS" -ne 1 ]; then
    log_skip "Sudoers module disabled; openconnect/DNS cleanup могут спрашивать пароль sudo."
    return 0
  fi

  if [ -f /etc/sudoers.d/lemana-vpn-openconnect ] && [ -f /etc/sudoers.d/lemana-vpn-dns ] && [ "$FORCE" -eq 0 ]; then
    log_ok "Sudoers rules already installed"
    return 0
  fi

  log_step "Настраиваю sudoers"
  log_detail "Это убирает повторный sudo-пароль при подключении, но разрешает только openconnect и DNS cleanup wrapper."

  openconnect_bin="$(brew --prefix)/bin/openconnect"
  [ -x "$openconnect_bin" ] || openconnect_bin="$(command -v openconnect || true)"
  [ -n "$openconnect_bin" ] || die "openconnect binary not found"

  tmp="$1"
  current_user="$(id -un)"

  run sudo install -d -m 755 -o root -g wheel /etc/sudoers.d

  write_file "$tmp/sudoers-openconnect" "$current_user ALL=(ALL) NOPASSWD: $openconnect_bin"
  run sudo install -m 440 -o root -g wheel "$tmp/sudoers-openconnect" /etc/sudoers.d/lemana-vpn-openconnect
  run sudo visudo -c -f /etc/sudoers.d/lemana-vpn-openconnect
  log_ok "sudoers openconnect rule is valid"

  write_file "$tmp/sudoers-dns" "$current_user ALL=(ALL) NOPASSWD: $DNS_CLEANUP"
  run sudo install -m 440 -o root -g wheel "$tmp/sudoers-dns" /etc/sudoers.d/lemana-vpn-dns
  run sudo visudo -c -f /etc/sudoers.d/lemana-vpn-dns
  log_ok "sudoers DNS cleanup rule is valid"
}

install_touchid_helper() {
  if [ "$USE_TOUCHID" -ne 1 ]; then
    log_skip "Touch ID module disabled; мастер-пароль Bitwarden будет вводиться вручную при необходимости."
    return 0
  fi

  log_step "Проверяю Touch ID helper"
  log_detail "Helper добавляет локальный Touch ID prompt перед чтением мастер-пароля Bitwarden из Keychain."

  if [ -x "$INSTALL_BIN_DIR/keychain-fingerprint" ] && [ "$FORCE" -eq 0 ]; then
    log_ok "Touch ID helper already installed: $INSTALL_BIN_DIR/keychain-fingerprint"
    return 0
  fi

  need_cmd git
  need_cmd swiftc

  tmp="$1"
  log_info "Building keychain-fingerprint helper"
  run git clone --depth 1 https://github.com/dss99911/keychain-fingerprint.git "$tmp/keychain-fingerprint"
  run swiftc -o "$tmp/keychain-fingerprint-bin" "$tmp/keychain-fingerprint/main.swift" -framework LocalAuthentication -framework Security
  run install -m 700 "$tmp/keychain-fingerprint-bin" "$INSTALL_BIN_DIR/keychain-fingerprint"
  log_ok "Touch ID helper installed"
}

install_menu_bar_app() {
  if [ "$INSTALL_APP" -ne 1 ]; then
    log_skip "Menu Bar app disabled; CLI и алиасы останутся основным интерфейсом."
    return 0
  fi

  need_cmd swift

  tmp="$1"
  app_src="$tmp/app"
  log_step "Собираю Swift Menu Bar app"
  log_detail "Приложение живёт в status bar и вызывает $INSTALL_BIN_DIR/vpn-lemanapro.sh для подключения и статуса модулей."
  log_detail "Swift build может занять минуту; строки вида '[2/5] Write swift-version...' — нормальный вывод компилятора."

  run mkdir -p "$app_src/Sources/LemanaVPN"

  download_file "app/Package.swift" "$app_src/Package.swift"
  download_file "app/Sources/LemanaVPN/LemanaVPNApp.swift" "$app_src/Sources/LemanaVPN/LemanaVPNApp.swift"
  download_file "app/Sources/LemanaVPN/VPNManager.swift" "$app_src/Sources/LemanaVPN/VPNManager.swift"
  download_file "app/Sources/LemanaVPN/BoundedLog.swift" "$app_src/Sources/LemanaVPN/BoundedLog.swift"
  download_file "app/Sources/LemanaVPN/SessionTiming.swift" "$app_src/Sources/LemanaVPN/SessionTiming.swift"
  download_file "app/Sources/LemanaVPN/VPNIcons.swift" "$app_src/Sources/LemanaVPN/VPNIcons.swift"

  log_info "Building LemanaVPN.app"
  run swift build -c release --package-path "$app_src"

  app_bin="$app_src/.build/release/LemanaVPN"
  info_plist="$tmp/Info.plist"

  if [ "$DRY_RUN" -eq 0 ] && [ ! -x "$app_bin" ]; then
    die "Swift build did not produce $app_bin"
  fi

  run mkdir -p "$APP_DIR/Contents/MacOS" "$APP_DIR/Contents/Resources"
  run install -m 755 "$app_bin" "$APP_DIR/Contents/MacOS/LemanaVPN"

  write_file "$info_plist" '<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>CFBundleExecutable</key>
  <string>LemanaVPN</string>
  <key>CFBundleIdentifier</key>
  <string>ru.dokops.LemanaVPN</string>
  <key>CFBundleName</key>
  <string>LemanaVPN</string>
  <key>CFBundleDisplayName</key>
  <string>LemanaVPN</string>
  <key>CFBundlePackageType</key>
  <string>APPL</string>
  <key>CFBundleShortVersionString</key>
  <string>1.0</string>
  <key>CFBundleVersion</key>
  <string>1</string>
  <key>LSMinimumSystemVersion</key>
  <string>13.0</string>
  <key>LSUIElement</key>
  <true/>
</dict>
</plist>'
  run install -m 644 "$info_plist" "$APP_DIR/Contents/Info.plist"
  log_ok "Menu Bar app installed: $APP_DIR"
}

install_launch_agent() {
  if [ "$INSTALL_AUTOSTART" -ne 1 ]; then
    log_skip "Autostart disabled; LemanaVPN.app можно запускать вручную."
    return 0
  fi
  if [ "$INSTALL_APP" -ne 1 ]; then
    log_skip "Autostart skipped because Menu Bar app is disabled."
    return 0
  fi

  tmp="$1"
  plist="$tmp/ru.dokops.LemanaVPN.plist"
  log_step "Настраиваю автозапуск Menu Bar app"
  log_detail "LaunchAgent запускает LemanaVPN.app при логине, чтобы VPN был доступен из status bar."

  run mkdir -p "$HOME/Library/LaunchAgents"
  write_file "$plist" "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
<plist version=\"1.0\">
<dict>
  <key>Label</key>
  <string>ru.dokops.LemanaVPN</string>
  <key>ProgramArguments</key>
  <array>
    <string>$APP_DIR/Contents/MacOS/LemanaVPN</string>
  </array>
  <key>RunAtLoad</key>
  <true/>
  <key>KeepAlive</key>
  <false/>
</dict>
</plist>"
  run install -m 644 "$plist" "$LAUNCH_AGENT"
  if [ "$DRY_RUN" -eq 0 ]; then
    launchctl unload "$LAUNCH_AGENT" >/dev/null 2>&1 || true
    launchctl load "$LAUNCH_AGENT" >/dev/null 2>&1 || true
  else
    printf '+ launchctl load %s\n' "$LAUNCH_AGENT"
  fi
  log_ok "LaunchAgent installed: $LAUNCH_AGENT"
}

restart_running_menu_bar_app() {
  [ "$INSTALL_APP" -eq 1 ] || return 0

  if [ "$DRY_RUN" -eq 1 ]; then
    printf '+ restart LemanaVPN.app if running\n'
    return 0
  fi

  if pgrep -x LemanaVPN >/dev/null 2>&1; then
    log_step "Перезапускаю уже запущенное LemanaVPN.app"
    log_detail "Это нужно, чтобы status bar приложение сразу увидело свежий CLI и новый код."
    killall LemanaVPN >/dev/null 2>&1 || true
    sleep 1
    open "$APP_DIR" >/dev/null 2>&1 || true
    log_ok "LemanaVPN.app restarted"
  else
    log_skip "LemanaVPN.app сейчас не запущен; перезапуск не нужен."
  fi
}

install_shell_aliases() {
  if [ "$INSTALL_ALIASES" -ne 1 ]; then
    log_skip "Shell aliases disabled; команды можно вызывать напрямую из $INSTALL_BIN_DIR."
    return 0
  fi

  zshrc="$HOME/.zshrc"
  tmp="$1"
  log_step "Обновляю shell aliases"
  log_detail "Основные алиасы vpn, vpn-auto, vpn-debug и vpn-fix-dns добавляются идемпотентным блоком в ~/.zshrc."
  log_detail "vpn-manual и vpn-manual-full остаются только как совместимые fallback-команды."

  [ -f "$zshrc" ] || run touch "$zshrc"

  block="$tmp/zshrc-block"
  if [ "$DRY_RUN" -eq 1 ]; then
    printf '+ update %s aliases\n' "$zshrc"
    return 0
  fi

  cat > "$block" <<EOF
# >>> lemana-vpn
vpn() { "$INSTALL_BIN_DIR/vpn-lemanapro.sh" "\$@"; }
vpn-auto() { "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --auto "\$@"; }
vpn-manual() { "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --manual "\$@"; }
vpn-manual-full() { "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --manual-full "\$@"; }
vpn-debug() { "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --debug "\$@"; }
vpn-fix-dns() { "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --repair-dns; }
# <<< lemana-vpn
EOF

  awk '
    /^# >>> lemana-vpn$/ { skip=1; next }
    /^# <<< lemana-vpn$/ { skip=0; next }
    skip != 1 { print }
  ' "$zshrc" > "$tmp/zshrc"

  {
    cat "$tmp/zshrc"
    printf '\n'
    cat "$block"
  } > "$tmp/zshrc.new"

  mv "$tmp/zshrc.new" "$zshrc"
  log_ok "Shell aliases updated: $zshrc"
}

maybe_login_bitwarden() {
  if [ "$CREDENTIAL_SOURCE" != "bitwarden" ]; then
    log_skip "Bitwarden не выбран; пропускаю Bitwarden login."
    return 0
  fi
  if [ "$DRY_RUN" -eq 1 ]; then
    printf '+ bw status # check Bitwarden login state\n'
    return 0
  fi
  if ! command -v bw >/dev/null 2>&1; then
    log_warn "Bitwarden CLI enabled but bw not found."
    return 0
  fi

  log_step "Проверяю Bitwarden CLI session"
  log_detail "На первом запуске vpn CLI сможет понять, нужно ли делать bw login/unlock."

  status="$(bw status 2>/dev/null || true)"
  if printf '%s\n' "$status" | grep -q '"status":"unauthenticated"'; then
    log_warn "Bitwarden CLI is not logged in. Run later: bw login"
  elif printf '%s\n' "$status" | grep -q '"status":"locked"'; then
    log_info "Bitwarden CLI is logged in but locked. First vpn run will ask for master password."
  else
    log_ok "Bitwarden CLI is available."
  fi
}

auth_profile_label() {
  case "$MODE" in
    manual-keychain) printf 'ручной вход: логин и пароль в Keychain, одноразовый код вручную' ;;
    keychain-auto) printf 'автоматический вход: ключ на этом Mac' ;;
    bitwarden-auto) printf 'автоматический вход: Bitwarden' ;;
    *) printf '%s' "$MODE" ;;
  esac
}

print_final_next_steps() {
  log ""
  log_ok "Готово."
  log_info "Open a new shell or run: exec zsh"
  if [ "$IMPORT_YANDEX_KEY" -eq 1 ] || [ "$MODE" != manual-keychain ]; then
    log_info "Как подключиться: автоматический вход командой vpn или кнопкой \"Подключить\"."
  else
    log_info "Как подключиться: Lemana VPN подставит логин и пароль, одноразовый код введите вручную."
  fi
  log_detail "Способ входа можно изменить в меню приложения."
  log_info "Status:  vpn --status"
  if [ "$INSTALL_APP" -eq 1 ]; then
    log_info "App:     open '$APP_DIR'"
  fi
}

main() {
  [ "$(uname -s)" = "Darwin" ] || die "This installer supports macOS only"

  tmp="$(mktemp -d)"
  trap 'rm -rf "$tmp"' EXIT INT TERM

  preserve_existing_username
  choose_modules
  if [ "$IMPORT_YANDEX_KEY" -eq 1 ]; then
    [ "$MODE" != "bitwarden-auto" ] || die "Импорт Яндекс Ключа используется с локальным ключом, без Bitwarden."
    if [ -z "$USERNAME" ] || ! keychain_has openconnect-lite "$USERNAME"; then
      CONFIGURE_LOGIN=1
    fi
  fi

  log_step "Начинаю установку Lemana VPN"
  log_detail "Повторный запуск безопасен: файлы обновляются идемпотентно, существующие credentials не перезаписываются."
  if interactive_enabled; then
    log_info "Выбран режим: $(auth_profile_label)"
    log_detail "Bitwarden и Touch ID будут установлены только если они выбраны явно."
  else
    log_info "Modules: mode=$MODE bitwarden=$USE_BITWARDEN touchid=$USE_TOUCHID sudoers=$INSTALL_SUDOERS shell=$INSTALL_ALIASES app=$INSTALL_APP autostart=$INSTALL_AUTOSTART"
  fi

  install_homebrew_packages
  install_openconnect_lite
  install_cli "$tmp"
  install_config "$tmp"
  install_dns_cleanup "$tmp"
  install_sudoers "$tmp"
  install_touchid_helper "$tmp"
  install_menu_bar_app "$tmp"
  install_launch_agent "$tmp"
  restart_running_menu_bar_app
  install_shell_aliases "$tmp"
  maybe_login_bitwarden

  if [ "$CONFIGURE_LOGIN" -eq 1 ]; then
    log_step "Записываю логин и пароль в macOS Keychain"
    log_detail "Будет запрошен корпоративный LDAP-пароль; настройка одноразового кода выполняется отдельно."
    run "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --configure-login
  elif [ "$CONFIGURE_KEYCHAIN" -eq 1 ]; then
    log_step "Записываю credentials в macOS Keychain"
    log_detail "Будут запрошены LDAP-пароль и постоянный код настройки 2FA, не текущий 30-секундный код."
    run "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --configure-keychain
  fi

  if [ "$IMPORT_YANDEX_KEY" -eq 1 ]; then
    log_step "Импортирую код из Яндекс Ключа"
    log_detail "Выберите локальный файл и запись VPN, затем подтвердите её текущим кодом с телефона."
    run "$INSTALL_BIN_DIR/vpn-lemanapro.sh" --import-yandex-key
  fi

  print_final_next_steps
}

main "$@"