// eventTime 取事件上的服务端时间；后端 0 值占位（0001-01-01T00:00:00Z）
// 不能让状态栏把「已工作」读成几百年的耗时——非正 epoch 一律回落到墙上时钟。
import { describe, expect, it } from 'vitest'
import { eventTime } from '../src/store'

describe('eventTime', () => {
  it('returns now when the timestamp is missing', () => {
    const now = 1_700_000_000_000
    expect(eventTime({}, now)).toBe(now)
    expect(eventTime({ ts: '' }, now)).toBe(now)
    expect(eventTime({ ts: undefined }, now)).toBe(now)
  })

  it('returns now for unparseable timestamps', () => {
    const now = 1_700_000_000_000
    expect(eventTime({ ts: 'not-a-date' }, now)).toBe(now)
    expect(eventTime({ ts: '2026-13-40T99:99:99Z' }, now)).toBe(now)
  })

  it('returns now when the parsed time is not a positive epoch (zero-value placeholder)', () => {
    // 0001-01-01T00:00:00Z is the Go/Unix zero time；过去不能解释为有效事件时间。
    const now = 1_700_000_000_000
    expect(eventTime({ ts: '0001-01-01T00:00:00Z' }, now)).toBe(now)
    // Date.parse('1970-01-01T00:00:00Z') === 0，应被一并回落，否则状态栏会显示从 epoch 至今。
    expect(eventTime({ ts: '1970-01-01T00:00:00Z' }, now)).toBe(now)
  })

  it('returns the parsed epoch for a real, parseable timestamp', () => {
    const now = 1_700_000_000_000
    expect(eventTime({ ts: '2024-01-02T03:04:05Z' }, now)).toBe(Date.parse('2024-01-02T03:04:05Z'))
    expect(eventTime({ ts: '2026-10-12T10:00:00Z' }, now)).toBe(Date.parse('2026-10-12T10:00:00Z'))
  })
})