Feature/polls attempt 2

src/services/date_utils/date_utils.js

@@ -0,0 +1,45 @@
+export const SECOND = 1000
+export const MINUTE = 60 * SECOND
+export const HOUR = 60 * MINUTE
+export const DAY = 24 * HOUR
+export const WEEK = 7 * DAY
+export const MONTH = 30 * DAY
+export const YEAR = 365.25 * DAY
+
+export const relativeTime = (date, nowThreshold = 1) => {
+  if (typeof date === 'string') date = Date.parse(date)
+  const round = Date.now() > date ? Math.floor : Math.ceil
+  const d = Math.abs(Date.now() - date)
+  let r = { num: round(d / YEAR), key: 'time.years' }
+  if (d < nowThreshold * SECOND) {
+    r.num = 0
+    r.key = 'time.now'
+  } else if (d < MINUTE) {
+    r.num = round(d / SECOND)
+    r.key = 'time.seconds'
+  } else if (d < HOUR) {
+    r.num = round(d / MINUTE)
+    r.key = 'time.minutes'
+  } else if (d < DAY) {
+    r.num = round(d / HOUR)
+    r.key = 'time.hours'
+  } else if (d < WEEK) {
+    r.num = round(d / DAY)
+    r.key = 'time.days'
+  } else if (d < MONTH) {
+    r.num = round(d / WEEK)
+    r.key = 'time.weeks'
+  } else if (d < YEAR) {
+    r.num = round(d / MONTH)
+    r.key = 'time.months'
+  }
+  // Remove plural form when singular
+  if (r.num === 1) r.key = r.key.slice(0, -1)
+  return r
+}
+
+export const relativeTimeShort = (date, nowThreshold = 1) => {
+  const r = relativeTime(date, nowThreshold)
+  r.key += '_short'
+  return r
+}