85 lines
2.2 KiB
JavaScript
85 lines
2.2 KiB
JavaScript
import dayjs from 'dayjs'
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import 'dayjs/locale/zh-cn'
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import utc from 'dayjs/plugin/utc'
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import timezone from 'dayjs/plugin/timezone'
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import relativeTime from 'dayjs/plugin/relativeTime'
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dayjs.extend(utc)
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dayjs.extend(timezone)
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dayjs.extend(relativeTime)
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dayjs.locale('zh-cn')
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const DEFAULT_TZ = 'Asia/Shanghai'
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dayjs.tz.setDefault(DEFAULT_TZ)
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const NUMERIC_REGEX = /^-?\d+(?:\.\d+)?$/
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const coerceDayjs = (value) => {
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if (value === null || value === undefined) {
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return null
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}
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if (typeof value === 'number') {
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return dayjs(value).tz(DEFAULT_TZ)
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}
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const stringValue = String(value).trim()
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if (!stringValue) {
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return null
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}
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if (NUMERIC_REGEX.test(stringValue)) {
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const numeric = Number(stringValue)
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if (Number.isNaN(numeric)) {
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return null
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}
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// 值小于 10^12 时视为秒级时间戳，否则视为毫秒
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if (Math.abs(numeric) < 1e12) {
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return dayjs.unix(numeric).tz(DEFAULT_TZ)
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}
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return dayjs(numeric).tz(DEFAULT_TZ)
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}
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// 解析 ISO 字符串（dayjs 会自动识别时区信息，如 Z 后缀表示 UTC）
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// 需要先转换为 UTC 再设置时区，否则 .tz() 只会改变显示而不会正确转换
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const parsed = dayjs(stringValue)
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if (!parsed.isValid()) {
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return null
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}
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// 先转换为 UTC（保留原始时间值），再转换到上海时区
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return parsed.utc().tz(DEFAULT_TZ)
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}
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export const parseToShanghai = (value) => coerceDayjs(value)
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export const formatDateTime = (value, format = 'YYYY-MM-DD HH:mm') => {
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const parsed = coerceDayjs(value)
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if (!parsed) return '-'
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return parsed.format(format)
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}
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export const formatFullDateTime = (value) => formatDateTime(value, 'YYYY-MM-DD HH:mm:ss')
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export const formatRelative = (value) => {
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const parsed = coerceDayjs(value)
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if (!parsed) return '-'
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return parsed.fromNow()
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}
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export const sortByDatetimeDesc = (items, accessor) => {
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const copy = [...items]
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copy.sort((a, b) => {
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const first = coerceDayjs(accessor(a))
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const second = coerceDayjs(accessor(b))
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if (!first && !second) return 0
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if (!first) return 1
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if (!second) return -1
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return second.valueOf() - first.valueOf()
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})
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return copy
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}
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export default dayjs
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