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

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
dynu_dir="${repo_root}/infrastructure/terraform/dynu"
out_json="${dynu_dir}/generated/dynu_dns_records_inventory.json"

if [[ ! -d "${dynu_dir}" ]]; then
  echo "ERROR: Dynu Terraform directory not found at ${dynu_dir}." >&2
  exit 1
fi

if ! command -v terraform >/dev/null 2>&1; then
  echo "ERROR: terraform is required to refresh Dynu DNS inventory." >&2
  exit 1
fi

mkdir -p "$(dirname "${out_json}")"

(
  cd "${dynu_dir}"
  if terraform output -json dynu_dns_inventory > "${out_json}"; then
    :
  elif terraform output -json dynu_dns_records_catalog > "${out_json}"; then
    :
  else
    echo "ERROR: Failed to export Dynu DNS inventory from Terraform outputs. Tried: dynu_dns_inventory, dynu_dns_records_catalog." >&2
    echo "Run 'cd infrastructure/terraform/dynu && terraform output' to inspect available outputs." >&2
    exit 1
  fi
)

if [[ ! -s "${out_json}" ]]; then
  echo "ERROR: Dynu DNS inventory output file is empty: ${out_json}" >&2
  exit 1
fi

echo "Generated: ${out_json}"