#!/usr/bin/env bash
# Launch shim for grok-bot-bin: optionally auto-update from Gitea releases, then
# exec the real binary under /opt/Grok Bot/. Fail soft on network/API errors.
set -u

REAL_DIR="/opt/Grok Bot"
API_URL='https://git.s1d3sw1ped.com/api/v1/repos/s1d3sw1ped/grok-bot-bin/releases?limit=1'

_maybe_update() {
  [[ "${GROK_BOT_NO_UPDATE:-}" == "1" ]] && return 0
  command -v curl >/dev/null 2>&1 || return 0
  command -v pacman >/dev/null 2>&1 || return 0
  command -v vercmp >/dev/null 2>&1 || return 0

  local installed
  installed=$(pacman -Q grok-bot-bin 2>/dev/null | awk '{print $2}') || return 0
  [[ -n "$installed" ]] || return 0

  local json
  json=$(curl -fsSL --connect-timeout 3 --max-time 10 "$API_URL" 2>/dev/null) || return 0
  [[ -n "$json" ]] || return 0

  local asset_url asset_name remote_ver
  asset_url=$(grep -oE 'https://[^"[:space:]\\]+grok-bot-bin-[^"[:space:]\\]+\.pkg\.tar\.zst' <<<"$json" | head -1) || true
  [[ -n "$asset_url" ]] || return 0
  asset_name=$(basename "$asset_url")
  if [[ "$asset_name" =~ ^grok-bot-bin-(.+)-x86_64\.pkg\.tar\.zst$ ]]; then
    remote_ver="${BASH_REMATCH[1]}"
  else
    return 0
  fi

  # Only upgrade when remote is strictly newer (vercmp: 1 means a > b).
  local cmp
  cmp=$(vercmp "$remote_ver" "$installed" 2>/dev/null) || return 0
  [[ "$cmp" =~ ^-?[0-9]+$ ]] || return 0
  if (( cmp <= 0 )); then
    return 0
  fi

  local tmpdir pkg
  tmpdir=$(mktemp -d 2>/dev/null) || return 0
  # shellcheck disable=SC2064
  trap "rm -rf '$tmpdir'" RETURN
  pkg="$tmpdir/$asset_name"

  echo "grok-bot: updating grok-bot-bin ${installed} -> ${remote_ver}" >&2
  if ! curl -fL --connect-timeout 5 --max-time 600 -o "$pkg" "$asset_url" 2>/dev/null; then
    echo "grok-bot: download failed; launching installed version" >&2
    return 0
  fi

  # Prefer passwordless sudo; fall back to interactive sudo. Fail soft either way.
  if ! sudo -n pacman -U --noconfirm "$pkg" 2>/dev/null; then
    if ! sudo pacman -U --noconfirm "$pkg"; then
      echo "grok-bot: need sudo to auto-update; run: sudo pacman -U <pkg> or launch /usr/bin/grok-bot from a terminal" >&2
      echo "grok-bot: pacman -U failed; launching installed version" >&2
      return 0
    fi
  fi
}

_maybe_update || true
trap - RETURN

if [[ -x "${REAL_DIR}/grok-bot" ]]; then
  exec "${REAL_DIR}/grok-bot" "$@"
elif [[ -x "${REAL_DIR}/sand" ]]; then
  exec "${REAL_DIR}/sand" "$@"
else
  echo "grok-bot: real binary not found under ${REAL_DIR}" >&2
  exit 127
fi