package control

import "strings"

func RenderPreflightInspectScript() string {
	return `set -eu
if [ -r /etc/os-release ]; then
  . /etc/os-release
fi
printf 'OS_ID=%s\n' "${ID:-}"
printf 'OS_PRETTY=%s\n' "${PRETTY_NAME:-}"
printf 'OS_LIKE=%s\n' "${ID_LIKE:-}"
if [ -d /opt/vpnem-node/current ]; then
  printf 'MANAGED=1\n'
else
  printf 'MANAGED=0\n'
fi
if command -v docker >/dev/null 2>&1; then
  printf 'DOCKER=1\n'
else
  printf 'DOCKER=0\n'
fi
if command -v docker >/dev/null 2>&1 && docker compose version >/dev/null 2>&1; then
  printf 'COMPOSE=1\n'
elif command -v docker-compose >/dev/null 2>&1; then
  printf 'COMPOSE=1\n'
else
  printf 'COMPOSE=0\n'
fi
if command -v ss >/dev/null 2>&1; then
  if ss -lnt 2>/dev/null | awk 'NR>1 {print $4}' | grep -Eq '(^|[:.])443$'; then
    printf 'TCP_443=1\n'
  else
    printf 'TCP_443=0\n'
  fi
  if ss -lnu 2>/dev/null | awk 'NR>1 {print $4}' | grep -Eq '(^|[:.])443$'; then
    printf 'UDP_443=1\n'
  else
    printf 'UDP_443=0\n'
  fi
  if ss -lnt 2>/dev/null | awk 'NR>1 {print $4}' | grep -Eq '(^|[:.])54101$'; then
    printf 'TCP_54101=1\n'
  else
    printf 'TCP_54101=0\n'
  fi
else
  printf 'TCP_443=unknown\n'
  printf 'UDP_443=unknown\n'
  printf 'TCP_54101=unknown\n'
fi
`
}

func ParsePreflightInspectOutput(stdout string) map[string]string {
	values := map[string]string{}
	for _, line := range strings.Split(stdout, "\n") {
		line = strings.TrimSpace(line)
		if line == "" {
			continue
		}
		key, value, ok := strings.Cut(line, "=")
		if !ok {
			continue
		}
		values[strings.TrimSpace(key)] = strings.TrimSpace(value)
	}
	return values
}