From 973c83dc361b4f3384ef8dd34263d12941defd6d Mon Sep 17 00:00:00 2001
From: CounterFire2023 <136581895+CounterFire2023@users.noreply.github.com>
Date: Thu, 11 Apr 2024 11:15:28 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0utc=E6=97=A5=E6=9C=9F?=
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---
 src/utils/utcdate.util.ts | 55 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 src/utils/utcdate.util.ts

diff --git a/src/utils/utcdate.util.ts b/src/utils/utcdate.util.ts
new file mode 100644
index 0000000..341fab2
--- /dev/null
+++ b/src/utils/utcdate.util.ts
@@ -0,0 +1,55 @@
+export const ONE_DAY = 24 * 60 * 60 * 1000
+
+// format the date to the format we want
+export const formatDate = (date: Date): string => {
+  const year = date.getUTCFullYear()
+  const month = (date.getUTCMonth() + 1 + '').padStart(2, '0')
+  const day = (date.getUTCDate() + '').padStart(2, '0')
+  return `${year}${month}${day}`
+}
+
+// get formated datestring of yesterday
+export const yesterday = (date?: Date) => {
+  date = date || new Date()
+  date.setUTCDate(date.getUTCDate() - 1)
+  return date
+}
+
+export const nextday = (date?: Date) => {
+  date = date || new Date()
+  date.setUTCDate(date.getUTCDate() + 1)
+  return date
+}
+
+// calc days between two Date
+export function daysBetween(date1: Date, date2: Date) {
+  // hours*minutes*seconds*milliseconds
+  const diffInMs = Math.abs(date1.getTime() - date2.getTime())
+  const diffInDays = Math.round(diffInMs / ONE_DAY)
+  return diffInDays
+}
+
+// get begin of one day
+export const getDayBegin = (date: Date): Date => {
+  const year = date.getUTCFullYear()
+  const month = date.getUTCMonth()
+  const day = date.getUTCDate()
+  return new Date(year, month, day)
+}
+
+// get begin of n day ago
+export const getNDayAgo = (n: number, begin: boolean): Date => {
+  const date = new Date(Date.now() - n * ONE_DAY)
+  if (begin) {
+    return getDayBegin(date)
+  } else {
+    return date
+  }
+}
+
+// get begin of this month
+export const getMonthBegin = (date: Date): Date => {
+  const year = date.getUTCFullYear()
+  const month = date.getUTCMonth()
+  return new Date(year, month, 1)
+}