#!/bin/bash

# omarchy:summary=Remove the OpenClaw agent platform along with its gateway service and web app.
# omarchy:requires-sudo=true

# -u so an unset HOME is an error rather than a set of rm -rf paths rooted at /.
set -euo pipefail

unit_dir="$HOME/.config/systemd/user"

# Only systemd's own word counts as "stopped": a non-zero exit from is-active
# also covers an unreachable user manager, which says nothing about whether
# the process is alive.
unit_stopped() {
  local state
  state=$(systemctl --user is-active "$1" 2>/dev/null) || true
  [[ $state == inactive || $state == failed ]]
}

# The user services OpenClaw installs for itself: the gateway through
# onboarding, and the node host if the user ever paired this machine to
# another gateway. OpenClaw writes them to $HOME/.config regardless of
# XDG_CONFIG_HOME, so look exactly there; no unit means nothing registered.
# Upstream's own teardown knows every piece its install wrote (unit file, the
# default.target.wants enablement symlink, the reload), so prefer it while the
# binary is still installed and fall back to doing the same by hand. A service
# that will not stop aborts the removal: dropping the package would strand the
# live process on deleted code with no way to restart it cleanly.
for unit_file in "$unit_dir"/openclaw-gateway.service "$unit_dir"/openclaw-node.service; do
  [[ -f $unit_file ]] || continue
  unit=${unit_file##*/}
  role=${unit#openclaw-}
  role=${role%.service}
  if openclaw "$role" uninstall >/dev/null 2>&1 ||
    systemctl --user disable --now "$unit" 2>/dev/null ||
    unit_stopped "$unit"; then
    # .bak is what `gateway install --force` leaves behind when it rewrites a
    # unit, so it goes with the unit.
    rm -f "$unit_file" "$unit_file.bak" "$unit_dir/default.target.wants/$unit"
    systemctl --user daemon-reload 2>/dev/null || true
    # A unit that had been failing stays listed as "not-found failed" after
    # its file is gone until its failed state is reset.
    systemctl --user reset-failed "$unit" 2>/dev/null || true
  else
    echo "Could not stop $unit; OpenClaw was not removed." >&2
    exit 1
  fi
done

omarchy-pkg-drop openclaw

# The web app launcher and icon omarchy-install-ai-openclaw created.
rm -f "$HOME/.local/share/applications/OpenClaw.desktop"
rm -f "$HOME/.local/share/icons/hicolor/256x256/apps/openclaw.png"
gtk-update-icon-cache "$HOME/.local/share/icons/hicolor" &>/dev/null || true

# ~/.openclaw stays unless asked: the chats, memories, and credentials in
# there are the user's agent, and finding them intact after a reinstall is the
# better surprise. But it also holds the plugin runtimes and caches OpenClaw
# downloads for itself, easily hundreds of megabytes, so the choice is put in
# front of the user with the size rather than left silent. Without a terminal
# to ask in, keeping it is the answer.
state_removed=false
if [[ -d $HOME/.openclaw && -t 0 ]] && omarchy-cmd-present gum; then
  size=$(du -sh "$HOME/.openclaw" 2>/dev/null | cut -f1)
  if gum confirm --default=false "Also delete ~/.openclaw ($size: chats, memories, credentials, and downloaded plugins)?"; then
    rm -rf "$HOME/.openclaw"
    state_removed=true
  fi
fi

echo ""
echo "OpenClaw has been removed."
if [[ $state_removed == true ]]; then
  echo "Its chats, memories, and settings in ~/.openclaw are gone too."
elif [[ -d $HOME/.openclaw ]]; then
  echo "Your agent's chats, memories, and settings are still in ~/.openclaw."
fi