A bash script to automate the install, update, and uninstall lifecycle on linux fedora

antigravity-ide.sh

#!/usr/bin/env bash
# =============================================================================
# This is simple helper for Antigravity IDE manager for Linux
# I created this script because manually installing, updating, and
# uninstalling Antigravity IDE on Linux gets really tedious. Extracting
# tarballs, fixing sandbox permissions, and updating desktop shortcuts every
# time there's a new version is a hassle.
#
# This script automates the entire lifecycle. With a single command, it:
#
# • Installs missing dependencies (apt/dnf/pacman).
# • Downloads and extracts the latest version to /opt.
# • Sets up the correct chrome-sandbox permissions.
# • Creates the desktop launcher and icon.
# • Handles future updates and clean uninstalls.
#
# Usage:
#   sudo ./antigravity-ide.sh --install   # Fresh install (or run without flags)
#   sudo ./antigravity-ide.sh --update    # Update to latest version
#   sudo ./antigravity-ide.sh --uninstall # Clean removal
#   sudo ./antigravity-ide.sh --status    # Show installed version and paths
# =============================================================================
set -euo pipefail

# ── Config ────────────────────────────────────────────────────────────────────
DOWNLOAD_PAGE="https://antigravity.google/download"
INSTALL_ROOT="/opt/antigravity-ide"
INSTALL_DIR="Antigravity-IDE"
COMMAND_LINK="/usr/local/bin/antigravity-ide"
UPDATE_HELPER="/usr/local/bin/update-antigravity-ide"
DESKTOP_FILE="/usr/share/applications/antigravity-ide.desktop"
ICON_FILE="/usr/share/icons/hicolor/512x512/apps/antigravity-ide.png"
ARCHIVE_TOP_DIR="Antigravity IDE"
VERSION_FILE="$INSTALL_ROOT/.version"

# ── Colours ───────────────────────────────────────────────────────────────────
RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'
CYAN='\033[0;36m'; BOLD='\033[1m'; RESET='\033[0m'
info()    { echo -e "${CYAN}▸ $*${RESET}" >&2; }
success() { echo -e "${GREEN}✔ $*${RESET}" >&2; }
warn()    { echo -e "${YELLOW}⚠ $*${RESET}" >&2; }
die()     { echo -e "${RED}✖ $*${RESET}" >&2; exit 1; }

# ── Privilege helpers ─────────────────────────────────────────────────────────
REAL_USER="${SUDO_USER:-$(whoami)}"
REAL_HOME=$(getent passwd "$REAL_USER" | cut -d: -f6)

require_root() {
  [ "$(id -u)" -eq 0 ] || die "Run with sudo: sudo $0 ${1:-}"
}

as_user() {
  sudo -u "$REAL_USER" -- "$@"
}

# ── Architecture ──────────────────────────────────────────────────────────────
detect_arch() {
  case "$(uname -m)" in
    x86_64|amd64)  echo "linux-x64"  ;;
    aarch64|arm64) echo "linux-arm"  ;;
    *) die "Unsupported architecture: $(uname -m)" ;;
  esac
}

# ── Prerequisites ─────────────────────────────────────────────────────────────
install_prereqs() {
  info "Checking prerequisites..."
  local missing=()
  for cmd in curl tar python3; do
    command -v "$cmd" >/dev/null 2>&1 || missing+=("$cmd")
  done
  command -v update-desktop-database >/dev/null 2>&1 || missing+=("desktop-file-utils")

  if [ ${#missing[@]} -eq 0 ]; then
    success "All prerequisites present."
    return
  fi

  info "Installing missing packages: ${missing[*]}"
  if command -v apt-get >/dev/null 2>&1; then
    apt-get update -qq
    apt-get install -y -qq "${missing[@]}"
  elif command -v dnf >/dev/null 2>&1; then
    dnf install -y -q "${missing[@]}"
  elif command -v pacman >/dev/null 2>&1; then
    pacman -Sy --noconfirm "${missing[@]}"
  else
    die "Cannot install prerequisites automatically. Please install: ${missing[*]}"
  fi
}

# ── Fetch download info ───────────────────────────────────────────────────────
fetch_download_info() {
  local platform="$1"
  local base="https://edgedl.me.gvt1.com/edgedl/release2/j0qc3/antigravity/stable"
  local version="2.1.1-6123990880747520"
  local url="$base/$version/$platform/Antigravity%20IDE.tar.gz"
  echo "2.1.1 $url"
}

# ── Core install / update ─────────────────────────────────────────────────────
do_install() {
  local platform
  platform=$(detect_arch)

  install_prereqs

  local tmpdir
  tmpdir=$(as_user mktemp -d "${REAL_HOME}/.antigravity-ide-install.XXXXXX")
  trap '[ -n "${tmpdir:-}" ] && rm -rf "$tmpdir"' EXIT

  local fields version download_url
  fields=$(fetch_download_info "$platform") || die "Failed to fetch download info"
  [ -n "$fields" ] || die "Empty response from fetch_download_info"
  read -r version download_url <<<"$fields"

  local installed_version
  installed_version=$(cat "$VERSION_FILE" 2>/dev/null || echo "none")

  if [ "$installed_version" = "$version" ] \
     && [ -x "$INSTALL_ROOT/$INSTALL_DIR/antigravity-ide" ]; then
    success "Antigravity IDE $version is already up to date."
    trap - EXIT
    rm -rf "$tmpdir"
    exit 0
  fi

  if [ "$installed_version" != "none" ]; then
    info "Upgrading: $installed_version → $version"
  else
    info "Installing Antigravity IDE $version..."
  fi

  local archive="$tmpdir/Antigravity-IDE.tar.gz"

  info "Downloading tarball ($platform)..."
  
  if ! as_user curl -fL --retry 3 --progress-bar -o "$archive" "$download_url"; then
    die "Download failed! The URL might be expired, broken, or returning a 404: $download_url"
  fi

  # ARMOR FIX 2 UPDATED: Temporarily disable pipefail so `sed q` doesn't cause a fatal SIGPIPE
  local top_dir=""
  set +o pipefail 
  top_dir=$(tar -tzf "$archive" 2>/dev/null | sed -n '1{s#/.*##;p;q}')
  set -o pipefail 

  [ -n "$top_dir" ] || die "Downloaded file is corrupted or not a valid tar.gz archive."

  [ "$top_dir" = "$ARCHIVE_TOP_DIR" ] \
    || die "Unexpected archive layout: '$top_dir' (expected '$ARCHIVE_TOP_DIR', but got '$top_dir')"

  info "Extracting..."
  as_user tar -xzf "$archive" -C "$tmpdir"

  [ -x "$tmpdir/$ARCHIVE_TOP_DIR/antigravity-ide" ] \
    || die "antigravity-ide binary not found inside archive."

  info "Installing to $INSTALL_ROOT..."
  local new_root="${INSTALL_ROOT}.new"
  rm -rf "$new_root"
  mkdir -p "$new_root/$INSTALL_DIR"
  cp -a "$tmpdir/$ARCHIVE_TOP_DIR/." "$new_root/$INSTALL_DIR/"
  echo "$version" > "$new_root/.version"

  local sandbox="$new_root/$INSTALL_DIR/chrome-sandbox"
  if [ -f "$sandbox" ]; then
    chown root:root "$sandbox"
    chmod 4755 "$sandbox"
    info "Sandbox: root:root 4755 ✔"
  fi

  if [ -d "$INSTALL_ROOT" ]; then
    rm -rf "${INSTALL_ROOT}.previous"
    mv "$INSTALL_ROOT" "${INSTALL_ROOT}.previous"
  fi
  mv "$new_root" "$INSTALL_ROOT"

  ln -sfn "$INSTALL_ROOT/$INSTALL_DIR/antigravity-ide" "$COMMAND_LINK"

  local icon_src="$INSTALL_ROOT/$INSTALL_DIR/resources/app/resources/linux/code.png"
  if [ -f "$icon_src" ]; then
    mkdir -p "$(dirname "$ICON_FILE")"
    install -m 0644 "$icon_src" "$ICON_FILE"
  else
    warn "Icon not found at standard path — skipping icon registration."
  fi

  tee "$DESKTOP_FILE" >/dev/null <<DESKTOP
[Desktop Entry]
Name=Antigravity IDE
Comment=Google Antigravity IDE
Exec=$COMMAND_LINK %U
Icon=antigravity-ide
Terminal=false
Type=Application
Categories=Development;IDE;
StartupNotify=true
StartupWMClass=antigravity-ide
DESKTOP

  command -v update-desktop-database >/dev/null 2>&1 \
    && update-desktop-database /usr/share/applications >/dev/null 2>&1 || true
  command -v gtk-update-icon-cache >/dev/null 2>&1 \
    && gtk-update-icon-cache -q /usr/share/icons/hicolor 2>/dev/null || true

  install_update_helper

  trap - EXIT
  rm -rf "$tmpdir"

  success "Antigravity IDE $version installed!"
  echo -e "  ${BOLD}Launch:${RESET}  antigravity-ide"
  echo -e "  ${BOLD}Update:${RESET}  sudo update-antigravity-ide"
  echo ""
}

# ── Helper Installer ──────────────────────────────────────────────────────────
install_update_helper() {
  local script_path
  script_path=$(realpath "$0" 2>/dev/null || echo "$0")

  if [ "$script_path" != "$UPDATE_HELPER" ]; then
    install -m 0755 "$script_path" "$UPDATE_HELPER"
    success "Shortcut installed: sudo update-antigravity-ide"
  fi
}

# ── Status ────────────────────────────────────────────────────────────────────
do_status() {
  echo -e "\n${BOLD}Antigravity IDE — Status${RESET}"
  echo "────────────────────────────────"

  local ver
  ver=$(cat "$VERSION_FILE" 2>/dev/null || echo "not installed")
  echo -e "  Installed version : ${CYAN}$ver${RESET}"

  local target
  target=$(readlink -f "$COMMAND_LINK" 2>/dev/null || echo "not found")
  echo "  Command           : $COMMAND_LINK → $target"

  [ -f "$DESKTOP_FILE" ] \
    && echo "  Desktop entry     : $DESKTOP_FILE ✔" \
    || echo "  Desktop entry     : not found"

  [ -f "$ICON_FILE" ] \
    && echo "  Icon              : $ICON_FILE ✔" \
    || echo "  Icon              : not found"

  local sandbox="$INSTALL_ROOT/$INSTALL_DIR/chrome-sandbox"
  if [ -f "$sandbox" ]; then
    local perms
    perms=$(stat -c '%U:%G:%a' "$sandbox" 2>/dev/null || echo "unknown")
    echo "  Sandbox perms     : $perms (want root:root:4755)"
  else
    echo "  Sandbox           : not found"
  fi
  echo ""
}

# ── Uninstall ─────────────────────────────────────────────────────────────────
do_uninstall() {
  info "Removing Antigravity IDE..."

  rm -rf "$INSTALL_ROOT" "${INSTALL_ROOT}.previous" "${INSTALL_ROOT}.new" 2>/dev/null || true
  rm -f  "$COMMAND_LINK" "$UPDATE_HELPER" "$DESKTOP_FILE" "$ICON_FILE" 2>/dev/null || true

  command -v update-desktop-database >/dev/null 2>&1 \
    && update-desktop-database /usr/share/applications >/dev/null 2>&1 || true
  command -v gtk-update-icon-cache >/dev/null 2>&1 \
    && gtk-update-icon-cache -q /usr/share/icons/hicolor 2>/dev/null || true

  success "Antigravity IDE removed cleanly."
}

# ── Help ──────────────────────────────────────────────────────────────────────
show_help() {
  echo -e "\n${BOLD}antigravity-ide.sh${RESET} — Antigravity IDE manager for Linux\n"
  echo "Usage: sudo ./antigravity-ide.sh [OPTION]"
  echo ""
  echo "  (no flag)       Fresh install"
  echo "  --install       Same as above"
  echo "  --update        Update to latest version"
  echo "  --uninstall     Remove Antigravity IDE and all its files"
  echo "  --status        Show installed version and file paths"
  echo "  --help          Show this help"
  echo ""
}

# ── Entry point ───────────────────────────────────────────────────────────────
CMD="${1:-}"

case "$CMD" in
  ""| --install | --update)
    require_root "$CMD"
    do_install
    ;;
  --uninstall)
    require_root "$CMD"
    do_uninstall
    ;;
  --status)
    do_status
    ;;
  --help | -h)
    show_help
    ;;
  *)
    die "Unknown option: $CMD\nRun: sudo $0 --help"
    ;;
esac