import { test } from 'node:test';
import assert from 'node:assert/strict';
import {
  formatSize,
  formatAdminDate,
  SIZE_KB,
  SIZE_MB,
  SIZE_GB,
} from '../../web/src/displayFormat.js';

test('shared display uses familiar 1024-based KB/MB/GB with comma grouping and readable whole-GB quotas', () => {
  for (const [bytes, expected] of [
    [0, '0KB'],
    [10, '1KB 미만'],
    [SIZE_KB, '1KB'],
    [938 * SIZE_KB, '938KB'],
    [1023 * SIZE_KB, '1,023KB'],
    [SIZE_MB, '1.0MB'],
    [1.1 * SIZE_MB, '1.1MB'],
    [SIZE_GB, '1.0GB'],
    [1.7 * SIZE_GB, '1.7GB'],
    [20 * SIZE_GB, '20.0GB'],
    [7687 * SIZE_GB, '7,687.0GB'],
    [1234567 * SIZE_GB, '1,234,567.0GB'],
  ])
    assert.equal(formatSize(bytes), expected);
});

test('admin dates include year and unambiguous Korea 24-hour time independent of host timezone', () => {
  assert.equal(formatAdminDate(Date.parse('2026-10-22T02:02:00Z')), '2026년 10월 22일 11:02');
  assert.equal(formatAdminDate(Date.parse('2026-10-21T15:02:00Z')), '2026년 10월 22일 00:02');
  assert.equal(formatAdminDate(null), '확인 불가');
});