#!/usr/bin/env node
// Refresh the vendored apf-ai-service protos from the sibling
// working tree. Developer convenience only — not invoked from CI.
//
// Per ADR-0024 §"Sub-decision 3 — vendored protos", the BFF holds a
// committed copy of the `.proto` files; this script keeps the copy
// in sync with the upstream repo when a contract change lands. The
// generated TypeScript stubs are NOT regenerated here — chain with
// `pnpm run grpc:codegen` if needed:
//
//   pnpm run grpc:sync && pnpm run grpc:codegen
//
// Exits non-zero (with a clear message) when the sibling repo is not
// where the script expects, so a contributor whose layout differs
// gets a useful pointer instead of a silent no-op.

import { existsSync, readdirSync, copyFileSync, statSync } from 'node:fs';
import { join, resolve, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const HERE = dirname(fileURLToPath(import.meta.url));
const WORKSPACE_ROOT = resolve(HERE, '..');
const UPSTREAM = resolve(WORKSPACE_ROOT, '..', 'apf-ai-service', 'contract', 'proto');
const VENDORED = resolve(WORKSPACE_ROOT, 'apps', 'portal-bff', 'src', 'grpc', 'proto', 'apf-ai');

if (!existsSync(UPSTREAM) || !statSync(UPSTREAM).isDirectory()) {
  console.error(
    `apf-ai-service protos not found at ${UPSTREAM}.\n` +
      `This script expects the sibling working tree at ../apf-ai-service ` +
      `relative to this workspace. Adjust the path or clone the repo and retry.`,
  );
  process.exit(1);
}

const files = readdirSync(UPSTREAM).filter((f) => f.endsWith('.proto'));
if (files.length === 0) {
  console.error(`No .proto files under ${UPSTREAM} — nothing to sync.`);
  process.exit(1);
}

for (const file of files) {
  copyFileSync(join(UPSTREAM, file), join(VENDORED, file));
  console.log(`synced ${file}`);
}

console.log(
  `\n${files.length} proto file(s) refreshed into ${VENDORED}.\n` +
    `Next: pnpm run grpc:codegen (regenerate TypeScript stubs).`,
);