优化日程界面

uniapp/utils/date.js

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+export function pad(n) {
+	return String(n).padStart(2, '0')
+}
+
+export function toDate(value) {
+	if (!value) return null
+	const d = value instanceof Date ? value : new Date(value)
+	return Number.isNaN(d.getTime()) ? null : d
+}
+
+export function formatDate(value, withTime = false) {
+	const d = toDate(value)
+	if (!d) return ''
+	const date = `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}`
+	if (!withTime) return date
+	return `${date} ${pad(d.getHours())}:${pad(d.getMinutes())}`
+}
+
+export function formatRelativeTime(value) {
+	const d = toDate(value)
+	if (!d) return ''
+	const now = new Date()
+	const diff = now.getTime() - d.getTime()
+	const minute = 60 * 1000
+	const hour = 60 * minute
+	const day = 24 * hour
+
+	if (diff < minute) return '刚刚'
+	if (diff < hour) return `${Math.floor(diff / minute)} 分钟前`
+	if (diff < day) return `${Math.floor(diff / hour)} 小时前`
+	if (diff < 7 * day) return `${Math.floor(diff / day)} 天前`
+	return formatDate(d)
+}
+
+export function isSameDay(a, b) {
+	const da = toDate(a)
+	const db = toDate(b)
+	if (!da || !db) return false
+	return (
+		da.getFullYear() === db.getFullYear() &&
+		da.getMonth() === db.getMonth() &&
+		da.getDate() === db.getDate()
+	)
+}
+
+export function isToday(value) {
+	return isSameDay(value, new Date())
+}
+
+export function isTomorrow(value) {
+	const d = toDate(value)
+	if (!d) return false
+	const tomorrow = new Date()
+	tomorrow.setDate(tomorrow.getDate() + 1)
+	return isSameDay(d, tomorrow)
+}
+
+export function dayLabel(value) {
+	if (isToday(value)) return '今天'
+	if (isTomorrow(value)) return '明天'
+	return formatDate(value)
+}
+
+export function startOfDay(value = new Date()) {
+	const d = toDate(value) || new Date()
+	return new Date(d.getFullYear(), d.getMonth(), d.getDate())
+}
+
+export function endOfDay(value = new Date()) {
+	const d = startOfDay(value)
+	d.setHours(23, 59, 59, 999)
+	return d
+}