1 files changed, 80 insertions, 0 deletions
diff --git a/src/components/dms/DateDivider.tsx b/src/components/dms/DateDivider.tsx
new file mode 100644
index 000000000..a9c82e8ea
--- /dev/null
+++ b/src/components/dms/DateDivider.tsx
@@ -0,0 +1,80 @@
+import React from 'react'
+import {View} from 'react-native'
+import {msg, Trans} from '@lingui/macro'
+import {useLingui} from '@lingui/react'
+import {subDays} from 'date-fns'
+
+import {atoms as a, useTheme} from '#/alf'
+import {Text} from '../Typography'
+import {localDateString} from './util'
+
+const timeFormatter = new Intl.DateTimeFormat(undefined, {
+  hour: 'numeric',
+  minute: 'numeric',
+})
+const weekdayFormatter = new Intl.DateTimeFormat(undefined, {
+  weekday: 'long',
+})
+const longDateFormatter = new Intl.DateTimeFormat(undefined, {
+  weekday: 'short',
+  month: 'long',
+  day: 'numeric',
+})
+const longDateFormatterWithYear = new Intl.DateTimeFormat(undefined, {
+  weekday: 'short',
+  month: 'long',
+  day: 'numeric',
+  year: 'numeric',
+})
+
+let DateDivider = ({date: dateStr}: {date: string}): React.ReactNode => {
+  const {_} = useLingui()
+  const t = useTheme()
+
+  let date: string
+  const time = timeFormatter.format(new Date(dateStr))
+
+  const timestamp = new Date(dateStr)
+
+  const today = new Date()
+  const yesterday = subDays(today, 1)
+  const oneWeekAgo = subDays(today, 7)
+
+  if (localDateString(today) === localDateString(timestamp)) {
+    date = _(msg`Today`)
+  } else if (localDateString(yesterday) === localDateString(timestamp)) {
+    date = _(msg`Yesterday`)
+  } else {
+    if (timestamp < oneWeekAgo) {
+      if (timestamp.getFullYear() === today.getFullYear()) {
+        date = longDateFormatter.format(timestamp)
+      } else {
+        date = longDateFormatterWithYear.format(timestamp)
+      }
+    } else {
+      date = weekdayFormatter.format(timestamp)
+    }
+  }
+
+  return (
+    <View style={[a.w_full, a.my_lg]}>
+      <Text
+        style={[
+          a.text_xs,
+          a.text_center,
+          t.atoms.bg,
+          t.atoms.text_contrast_medium,
+          a.px_md,
+        ]}>
+        <Trans>
+          <Text style={[a.text_xs, t.atoms.text_contrast_medium, a.font_bold]}>
+            {date}
+          </Text>{' '}
+          at {time}
+        </Trans>
+      </Text>
+    </View>
+  )
+}
+DateDivider = React.memo(DateDivider)
+export {DateDivider}