/**
 * Runs once, in its own process, before any spec: confirm every shard's
 * containerized half is answering, then clear its gateway mock.
 *
 * Seeding is NOT here any more. The order is load-bearing —
 * `seed-users.sql` names its prerequisites as "created by the API's always-on
 * boot seeders" (iam.organizations / units / positions) — and the freight app
 * now boots inside the vitest *workers*, which this process cannot reach. So the
 * template database is seeded once by `scripts/prepare-shards.mjs` (boot the app
 * → boot seeders → SQL fixtures) and each shard is a clone of it.
 */
const SHARDS = Number(process.env.IT_SHARDS ?? 1);
const PAYMENT_BASE = Number(process.env.IT_PAYMENT_PORT_BASE ?? 3131);
const GATEWAY_BASE = Number(process.env.IT_GATEWAY_PORT_BASE ?? 4600);

async function waitFor(label: string, url: string, attempts = 60): Promise<void> {
  for (let i = 0; i < attempts; i++) {
    try {
      const res = await fetch(url);
      if (res.ok) return;
    } catch {
      /* not up yet */
    }
    await new Promise((r) => setTimeout(r, 2000));
  }
  throw new Error(`${label} never became healthy at ${url}`);
}

export async function setup(): Promise<void> {
  const shards = Array.from({ length: SHARDS }, (_, i) => i);

  await Promise.all(
    shards.flatMap((i) => [
      waitFor(`payment-api (shard ${i})`, `http://localhost:${PAYMENT_BASE + i}/health`),
      waitFor(`gateway-mock (shard ${i})`, `http://localhost:${GATEWAY_BASE + i}/__control/health`),
    ]),
  );

  await Promise.all(
    shards.map((i) =>
      fetch(`http://localhost:${GATEWAY_BASE + i}/__control/reset`, { method: "POST" }),
    ),
  );

  console.log(`it: ${SHARDS} shard(s) ready`);
}