69 lines
2.2 KiB
JavaScript
69 lines
2.2 KiB
JavaScript
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/**
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* 时间格式化工具
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*
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* 背景：会话列表模板（components/conversation-item/index.wxml）读取
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* `conversation.lastMessageAtText` 做展示，但此前全仓无任何地方计算该字段，
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* 导致会话列表时间恒为空；聊天页 pages/chat/chat.ts 又自带一份 _formatTime。
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* 本模块把这两处时间格式化收敛到一处，避免重复实现。
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*
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* 约定：后端时间字段一律为 epoch 毫秒（number），与
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* types/index.d.ts 的 `lastMessageAt?: number` / `Message.sentAt: number` 对齐。
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*/
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/** 补零 */
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function pad2(n) {
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return n < 10 ? '0' + n : String(n);
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}
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/** 归一化为 Date，非法输入返回 null */
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function toDate(ts) {
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if (ts === null || ts === undefined || ts === '') return null;
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var d = ts instanceof Date ? ts : new Date(Number(ts));
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return isNaN(d.getTime()) ? null : d;
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}
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/** 同一天 */
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function isSameDay(a, b) {
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return a.getFullYear() === b.getFullYear()
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&& a.getMonth() === b.getMonth()
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&& a.getDate() === b.getDate();
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}
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/**
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* 会话列表时间：刚刚 / HH:mm / 昨天 / M/D / YYYY/M/D
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* @param {number|Date} ts
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* @returns {string}
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*/
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function formatConversationTime(ts) {
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var d = toDate(ts);
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if (!d) return '';
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var now = new Date();
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var diff = now.getTime() - d.getTime();
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if (diff >= 0 && diff < 60 * 1000) return '刚刚';
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if (isSameDay(d, now)) return pad2(d.getHours()) + ':' + pad2(d.getMinutes());
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var yesterday = new Date(now.getTime() - 24 * 60 * 60 * 1000);
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if (isSameDay(d, yesterday)) return '昨天';
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if (d.getFullYear() === now.getFullYear()) return (d.getMonth() + 1) + '/' + d.getDate();
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return d.getFullYear() + '/' + (d.getMonth() + 1) + '/' + d.getDate();
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}
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/**
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* 聊天气泡时间：今天 HH:mm（省略日期），否则 M/D HH:mm
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* 与 pages/chat/chat.ts 原有逻辑保持一致。
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* @param {number|Date} ts
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* @returns {string}
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*/
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function formatMessageTime(ts) {
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var d = toDate(ts);
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if (!d) return '';
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var now = new Date();
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var hm = pad2(d.getHours()) + ':' + pad2(d.getMinutes());
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if (isSameDay(d, now)) return hm;
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return (d.getMonth() + 1) + '/' + d.getDate() + ' ' + hm;
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}
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module.exports = {
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formatConversationTime: formatConversationTime,
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formatMessageTime: formatMessageTime,
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};
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