import assert from 'node:assert/strict'
import test from 'node:test'

import {
  expirationStatus,
  formatNumericDateTime,
  millisecondsUntil,
  toTimestamp,
} from '../src/date'

test('toTimestamp accepts seconds, milliseconds and API date strings', () => {
  assert.equal(toTimestamp(1_700_000_000), 1_700_000_000_000)
  assert.equal(toTimestamp(1_700_000_000_000), 1_700_000_000_000)
  assert.equal(toTimestamp('2026-07-17 12:30:00'), new Date('2026-07-17T12:30:00').getTime())
  assert.equal(toTimestamp('invalid'), null)
})

test('formatNumericDateTime produces stable protocol and display layouts', () => {
  const value = new Date(2026, 6, 18, 9, 5, 4)
  assert.equal(formatNumericDateTime(value), '2026-07-18 09:05:04')
  assert.equal(
    formatNumericDateTime(value, {
      dateSeparator: '/',
      includeTime: false,
    }),
    '2026/07/18',
  )
  assert.equal(
    formatNumericDateTime(value, {
      includeDate: false,
      includeSeconds: false,
    }),
    '09:05',
  )
  assert.equal(formatNumericDateTime('invalid'), null)
})

test('expirationStatus uses one canonical strict end-time decision', () => {
  const now = 1_700_000_000_000
  assert.equal(expirationStatus(null, now), 'missing')
  assert.equal(expirationStatus(now + 1, now), 'valid')
  assert.equal(expirationStatus(now, now), 'expired')
  assert.equal(expirationStatus(now - 1, now), 'expired')
})

test('millisecondsUntil keeps positive and negative durations', () => {
  assert.equal(millisecondsUntil(2_000, 1_000), 1_000_000)
  assert.equal(millisecondsUntil(1_000_000_000_000, 1_000_000_000_500), -500)
})