import { test } from 'node:test'
import assert from 'node:assert/strict'
import {
  formatNotificationTime,
  formatUnreadBadge,
  hasNewNotification,
  readLastNotifiedId,
  writeLastNotifiedId,
} from '../src/shared/utils/notification-bell.ts'

function createStorage() {
  const store = new Map<string, string>()
  return {
    getItem: (key: string) => (store.has(key) ? (store.get(key) as string) : null),
    setItem: (key: string, value: string) => {
      store.set(key, String(value))
    },
    removeItem: (key: string) => {
      store.delete(key)
    },
  }
}

function setupWindow() {
  const localStorage = createStorage()
  ;(globalThis as Record<string, unknown>).window = { localStorage }
  return { localStorage }
}

test('formatUnreadBadge 徽标文案：0 与非法值为空、超过 99 显示 99+', () => {
  assert.equal(formatUnreadBadge(0), '')
  assert.equal(formatUnreadBadge(-1), '')
  assert.equal(formatUnreadBadge(null), '')
  assert.equal(formatUnreadBadge(undefined), '')
  assert.equal(formatUnreadBadge(Number.NaN), '')
  assert.equal(formatUnreadBadge(1), '1')
  assert.equal(formatUnreadBadge(99), '99')
  assert.equal(formatUnreadBadge(100), '99+')
  assert.equal(formatUnreadBadge(9999), '99+')
})

test('hasNewNotification 新通知判定：latestId 需大于已提醒 id', () => {
  assert.equal(hasNewNotification(0, 0), false)
  assert.equal(hasNewNotification(null, 0), false)
  assert.equal(hasNewNotification(5, 5), false)
  assert.equal(hasNewNotification(5, 7), false)
  assert.equal(hasNewNotification(5, 3), true)
  assert.equal(hasNewNotification(5, 0), true)
  assert.equal(hasNewNotification(5, null), true)
})

test('已提醒 id 按用户读写并容错', () => {
  setupWindow()
  assert.equal(readLastNotifiedId('42'), 0, '未写入时按 0 处理')

  writeLastNotifiedId('42', 123)
  assert.equal(readLastNotifiedId('42'), 123)
  assert.equal(readLastNotifiedId('43'), 0, '不同用户互不影响')

  writeLastNotifiedId('42', 0)
  assert.equal(readLastNotifiedId('42'), 123, '非法 id 不覆盖已有值')

  window.localStorage.setItem('notification:last-notified-id:42', 'broken')
  assert.equal(readLastNotifiedId('42'), 0, '损坏值按 0 处理')
})

test('formatNotificationTime 今天/昨天/更早展示', () => {
  const now = new Date(2026, 8, 13, 15, 30)
  assert.equal(
    formatNotificationTime(new Date(2026, 8, 13, 9, 5).toISOString(), now),
    '09:05',
    '今天只显示时分',
  )
  assert.equal(
    formatNotificationTime(new Date(2026, 8, 12, 23, 59).toISOString(), now),
    '昨天 23:59',
    '昨天带前缀',
  )
  assert.equal(
    formatNotificationTime(new Date(2026, 8, 1, 8, 0).toISOString(), now),
    '09-01 08:00',
    '更早显示月-日',
  )
  assert.equal(formatNotificationTime(null, now), '')
  assert.equal(formatNotificationTime('not-a-date', now), '')
})