61 lines
1.4 KiB
TypeScript
61 lines
1.4 KiB
TypeScript
import { format, isAfter, isThisWeek, isThisYear, isToday, isYesterday, subDays } from 'date-fns';
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import { zhCN } from 'date-fns/locale/zh-CN';
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import type { ServerChatItem } from '~/lib/hooks/useChatEntries';
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type Bin = { category: string; items: ServerChatItem[] };
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export function binDates(_list: ServerChatItem[]) {
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const list = _list.slice().sort((a, b) => Date.parse(b.timestamp) - Date.parse(a.timestamp));
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const binLookup: Record<string, Bin> = {};
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const bins: Array<Bin> = [];
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list.forEach((item) => {
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const category = dateCategory(new Date(item.timestamp));
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if (!(category in binLookup)) {
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const bin = {
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category,
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items: [item],
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};
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binLookup[category] = bin;
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bins.push(bin);
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} else {
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binLookup[category].items.push(item);
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}
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});
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return bins;
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}
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function dateCategory(date: Date) {
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if (isToday(date)) {
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return '今天';
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}
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if (isYesterday(date)) {
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return '昨天';
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}
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if (isThisWeek(date)) {
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// e.g., "Mon" instead of "Monday"
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return format(date, 'EEE', { locale: zhCN });
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}
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const thirtyDaysAgo = subDays(new Date(), 30);
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if (isAfter(date, thirtyDaysAgo)) {
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return '过去 30 天';
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}
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if (isThisYear(date)) {
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// e.g., "Jan" instead of "January"
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return format(date, 'LLL', { locale: zhCN });
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}
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// e.g., "Jan 2023" instead of "January 2023"
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return format(date, 'LLL yyyy', { locale: zhCN });
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}
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