import { test } from "node:test";
import assert from "node:assert/strict";
import { ulid, jobIdTime } from "./ulid";

// Run with: pnpm --filter yt-dlp-transcript-common exec tsx --test common/jobs/ulid.test.ts

test("ulid is 26 chars and encodes the given time", () => {
  const now = 1_700_000_000_000;
  const id = ulid(now);
  assert.equal(id.length, 26);
  assert.equal(jobIdTime(id), now);
});

test("jobIdTime round-trips a real timestamp within a ms", () => {
  const now = 1_735_000_123_456;
  assert.equal(jobIdTime(ulid(now)), now);
});

test("jobIdTime decodes the legacy `<time36>-<rand>` scheme", () => {
  const now = 1_712_000_000_000;
  const legacy = `${now.toString(36)}-ab12cd`;
  assert.equal(jobIdTime(legacy), now);
});

test("ulids sort lexicographically in time order", () => {
  const a = ulid(1_000);
  const b = ulid(2_000);
  const c = ulid(3_000);
  const shuffled = [c, a, b];
  const sorted = [...shuffled].sort();
  assert.deepEqual(sorted, [a, b, c]);
});

test("jobIdTime returns 0 for garbage", () => {
  assert.equal(jobIdTime(""), 0);
  assert.equal(jobIdTime("!!!"), 0);
});