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src/support/time.ts

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+import { format, register } from 'timeago.js'
+import getReadingTime from 'reading-time'
+import { toString } from 'mdast-util-to-string'
+
+const TimeAgoConfiguration: string[][] = [
+    ['today', 'today'],
+    ['%s seconds ago', 'in %s seconds'],
+    ['1 minute ago', 'in 1 minute'],
+    ['%s minutes ago', 'in %s minutes'],
+    ['1 hour ago', 'in 1 hour'],
+    ['%s hours ago', 'in %s hours'],
+    ['1 day ago', 'in 1 day'],
+    ['%s days ago', 'in %s days'],
+    ['1 week ago', 'in 1 week'],
+    ['%s weeks ago', 'in %s weeks'],
+    ['1 month ago', 'in 1 month'],
+    ['%s months ago', 'in %s months'],
+    ['1 year ago', 'in 1 year'],
+    ['%s years ago', 'in %s years'],
+]
+
+function formatDate(date: Date): string {
+    const year = date.getFullYear()
+    const month = String(date.getMonth() + 1).padStart(2, '0')
+    const day = String(date.getDate()).padStart(2, '0')
+
+    return `${year}/${month}/${day}`
+}
+
+function formatDateFull(date: Date): string {
+    const yyyy = date.getFullYear()
+    const mm = String(date.getMonth() + 1).padStart(2, '0')
+    const dd = String(date.getDate()).padStart(2, '0')
+
+    const hh = String(date.getHours()).padStart(2, '0')
+    const mi = String(date.getMinutes()).padStart(2, '0')
+    const ss = String(date.getSeconds()).padStart(2, '0')
+
+    return `${yyyy}-${mm}-${dd} ${hh}:${mi}:${ss}`
+}
+
+function timeago(date?: Date): string {
+    if (!date) {
+        return 'today'
+    }
+
+    const localeFunc = (number: number, index: number, _?: number): [string, string] => {
+        return TimeAgoConfiguration[index] as [string, string]
+    }
+
+    register('timeago', localeFunc)
+
+    return format(date, 'timeago')
+}
+
+function remarkReadingTime() {
+    // eslint-disable-next-line ts/ban-ts-comment
+    // @ts-expect-error
+    return function (tree, { data }) {
+        const textOnPage = toString(tree)
+        const readingTime = getReadingTime(textOnPage)
+
+        data.astro.frontmatter.minutesRead = readingTime.text
+    }
+}
+
+export { formatDate, timeago, formatDateFull, remarkReadingTime }