import { test } from "node:test";
import assert from "node:assert/strict";
import { fatalBrokerReason, PinMismatchError } from "../src/broker-nats.ts";

// novox/hq issue 058 (and its review): serve mode retries a broker that is not up yet, but must
// give up at once on a failure waiting cannot fix — otherwise a permanent fault loops for ever
// disguised as "not reachable". This is the classifier that draws the line; the bed cannot test it
// (it starts the consumer only after the broker is up), so it is proven here.

test("a broker that is not up yet is retryable, not fatal", () => {
  for (const err of [
    Object.assign(new Error("connect ECONNREFUSED 10.42.0.1:5671"), { code: "ECONNREFUSED" }),
    Object.assign(new Error("connect ETIMEDOUT"), { code: "ETIMEDOUT" }),
    Object.assign(new Error("getaddrinfo EAI_AGAIN anchor.internal"), { code: "EAI_AGAIN" }),
    new Error("timed out fetching the broker's certificate"),
  ]) {
    assert.equal(fatalBrokerReason(err), null, `should retry: ${(err as Error).message}`);
  }
});

test("a certificate that does not match the pin is fatal, by type not by message", () => {
  // Typed, so rewording the message cannot turn an impostor back into an infinite retry.
  assert.notEqual(fatalBrokerReason(new PinMismatchError("anything at all")), null);
  // A plain Error with pin-ish words is NOT treated as the pin case — only the type is.
  assert.equal(fatalBrokerReason(new Error("the pinned value was fine")), null);
});

test("a malformed broker URL is fatal — it never parses on the next try", () => {
  assert.notEqual(fatalBrokerReason(Object.assign(new Error("Invalid URL"), { code: "ERR_INVALID_URL" })), null);
  assert.notEqual(fatalBrokerReason(new Error("Invalid URL: not-a-url")), null);
});

test("a refused login is fatal — a wrong or revoked credential, not an absent broker", () => {
  // The bus refuses a login in its own words; each is final, because the next try says the same.
  for (const msg of ["Authorization Violation", "nats: user authentication expired", "Permissions Violation for Subscription to \"x\""]) {
    assert.notEqual(fatalBrokerReason(new Error(msg)), null, `should be fatal: ${msg}`);
  }
});

test("a non-Error value does not crash the classifier", () => {
  assert.equal(fatalBrokerReason("just a string"), null);
  assert.equal(fatalBrokerReason(undefined), null);
});