fix: 新增相对时间

frontend_nuxt/utils/time.js

@@ -1,9 +1,71 @@
+// time.js
 export default class TimeManager {
-  static format(input) {
+  // 统一入口：最近 N 天用相对时间，其余走原来的绝对时间
+  static format(input, opts = {}) {
+    const {
+      relativeUntilMs = 48 * 60 * 60 * 1000, // 小于 48h 显示相对时间
+      now = new Date(),
+      locale = 'zh-CN',
+    } = opts
+
     const date = new Date(input)
     if (Number.isNaN(date.getTime())) return ''
 
-    const now = new Date()
+    const diffMs = now - date
+    if (diffMs < 0) {
+      // 未来时间：也用相对格式（“X 分钟后”）
+      return this.#formatRelative(date, { now, locale })
+    }
+    if (diffMs <= relativeUntilMs) {
+      return this.#formatRelative(date, { now, locale })
+    }
+    return this.#formatAbsolute(date, now)
+  }
+
+  // 仅相对时间（供需要时直接调用）
+  static formatRelative(input, { now = new Date(), locale = 'zh-CN' } = {}) {
+    const date = new Date(input)
+    if (Number.isNaN(date.getTime())) return ''
+    return this.#formatRelative(date, { now, locale })
+  }
+
+  // 仅绝对时间（保留你的原逻辑）
+  static formatAbsolute(input, now = new Date()) {
+    const date = new Date(input)
+    if (Number.isNaN(date.getTime())) return ''
+    return this.#formatAbsolute(date, now)
+  }
+
+  // —— 私有实现 —— //
+  static #formatRelative(date, { now, locale }) {
+    const rtf = new Intl.RelativeTimeFormat(locale, { numeric: 'always' })
+    const diffSec = Math.round((date - now) / 1000) // 过去是负数，未来是正数
+
+    const absSec = Math.abs(diffSec)
+
+    // 你想要的“几秒钟前”
+    if (absSec < 10) return diffSec <= 0 ? '几秒钟前' : '几秒钟后'
+    if (absSec < 60) return rtf.format(Math.trunc(diffSec), 'second')
+
+    const diffMin = Math.trunc(diffSec / 60)
+    const absMin = Math.abs(diffMin)
+    if (absMin < 60) return rtf.format(diffMin, 'minute')
+
+    const diffHour = Math.trunc(diffSec / 3600)
+    const absHour = Math.abs(diffHour)
+    if (absHour < 24) return rtf.format(diffHour, 'hour')
+
+    const diffDay = Math.trunc(diffSec / 86400)
+    if (Math.abs(diffDay) < 30) return rtf.format(diffDay, 'day')
+
+    const diffMonth = Math.trunc(diffDay / 30)
+    if (Math.abs(diffMonth) < 12) return rtf.format(diffMonth, 'month')
+
+    const diffYear = Math.trunc(diffDay / 365)
+    return rtf.format(diffYear, 'year')
+  }
+
+  static #formatAbsolute(date, now) {
     const startOfToday = new Date(now.getFullYear(), now.getMonth(), now.getDate())
     const startOfDate = new Date(date.getFullYear(), date.getMonth(), date.getDate())
     const diffDays = Math.floor((startOfToday - startOfDate) / 86400000)
@@ -22,11 +84,9 @@ export default class TimeManager {
     if (date.getFullYear() === now.getFullYear()) {
       return `${month}.${day} ${timePart}`
     }
-
     if (date.getFullYear() === now.getFullYear() - 1) {
       return `去年 ${month}.${day} ${timePart}`
     }
-
     return `${date.getFullYear()}.${month}.${day} ${timePart}`
   }
 }