import { afterEach, expect, test } from "bun:test";
import { redisDriver } from "../src/redis.ts";

const bun = globalThis.Bun as typeof Bun & { connect: (options: unknown) => Promise<unknown> };
const originalConnect = bun.connect;
afterEach(() => {
  bun.connect = originalConnect;
});

test("rediss URLs enable TLS and decode credentials", () => {
  const options: Array<Record<string, unknown>> = [];
  bun.connect = ((value: Record<string, unknown>) => {
    options.push(value);
    return new Promise(() => {});
  }) as typeof bun.connect;
  const driver = redisDriver("rediss://user:p%40ss@redis.example.com:6380/2");
  expect(options).toHaveLength(2);
  expect(options[0]).toMatchObject({ hostname: "redis.example.com", port: 6380, tls: true });
  driver.close();
});

test("rejects invalid Redis URLs before connecting", () => {
  expect(() => redisDriver("http://localhost:6379")).toThrow("redis:// or rediss://");
  expect(() => redisDriver("redis://localhost/not-a-db")).toThrow("database");
});

test("bounds writes queued while Redis is unavailable", () => {
  bun.connect = (() => new Promise(() => {})) as typeof bun.connect;
  const driver = redisDriver("redis://localhost:6379");
  for (let index = 0; index < 1000; index++) driver.publish("topic", index);
  expect(() => driver.publish("topic", "overflow")).toThrow("queue is full");
  driver.close();
});
