#!/usr/bin/env bash
set -euo pipefail

usage() {
  cat <<'EOF'
Usage:
  ./remote-run <command>

Environment variables:
  REMOTE_HOST   Default: host.docker.internal
  REMOTE_PORT   Default: 6666
  REMOTE_TOKEN  Optional shared token
EOF
}

if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
  usage
  exit 0
fi

if [[ $# -lt 1 ]]; then
  usage
  exit 2
fi

cmd="$1"
host="${REMOTE_HOST:-host.docker.internal}"
port="${REMOTE_PORT:-6666}"
token="${REMOTE_TOKEN:-}"

url="http://${host}:${port}/run/${cmd}"

curl_args=(--silent --show-error --no-buffer "$url")
if [[ -n "$token" ]]; then
  curl_args=(-H "X-Remote-Token: ${token}" "${curl_args[@]}")
fi

exec curl "${curl_args[@]}"