#!/usr/bin/env node
const API_BASE = process.env.TEST_API_BASE ?? "http://localhost:8080";
const TIMEOUT_MS = Number(process.env.TEST_API_WAIT_TIMEOUT_MS ?? 30_000);
const INTERVAL_MS = Number(process.env.TEST_API_WAIT_INTERVAL_MS ?? 500);
const URL = `${API_BASE.replace(/\/$/, "")}/api/healthz`;

const started = Date.now();
let attempt = 0;
let lastError = null;

while (Date.now() - started < TIMEOUT_MS) {
  attempt += 1;
  try {
    const controller = new AbortController();
    const timer = setTimeout(() => controller.abort(), 2_000);
    const res = await fetch(URL, { signal: controller.signal });
    clearTimeout(timer);
    if (res.ok) {
      const body = await res.json().catch(() => ({}));
      if (body && body.status === "ok") {
        const elapsed = Date.now() - started;
        console.log(
          `API server ready at ${URL} after ${elapsed}ms (attempt ${attempt})`,
        );
        process.exit(0);
      }
      lastError = new Error(
        `Unexpected health payload: ${JSON.stringify(body)}`,
      );
    } else {
      lastError = new Error(`HTTP ${res.status} from ${URL}`);
    }
  } catch (err) {
    lastError = err;
  }
  await new Promise((r) => setTimeout(r, INTERVAL_MS));
}

console.error(
  `API server not reachable at ${URL} after ${TIMEOUT_MS}ms (${attempt} attempts).`,
);
console.error(
  `Last error: ${lastError ? lastError.message ?? String(lastError) : "unknown"}`,
);
console.error(
  `Start the API Server workflow (or set TEST_API_BASE) before running tests.`,
);
process.exit(1);