X-Git-Url: https://git.auder.net/?p=vchess.git;a=blobdiff_plain;f=client%2Fsrc%2Futils%2Fdatetime.js;h=00e8b4b9f4dfb7e55552ea418f6c95bf6c196d4d;hp=3075bffc91aac9151f65e6ba18bf8e6f879fea23;hb=5b87454c515b1fbf94e2c07ba7cb0cff21f38620;hpb=967a2686ea801d4b33129d78087651451ef1904b

diff --git a/client/src/utils/datetime.js b/client/src/utils/datetime.js
index 3075bffc..00e8b4b9 100644
--- a/client/src/utils/datetime.js
+++ b/client/src/utils/datetime.js
@@ -13,3 +13,31 @@ export function getTime(d)
 	return zeroPad(d.getHours()) + ":" + zeroPad(d.getMinutes()) + ":" +
 		zeroPad(d.getSeconds());
 }
+
+function padDigits(x)
+{
+  if (x < 10)
+    return "0" + x;
+  return x;
+}
+
+export function ppt(t)
+{
+  // "Pretty print" an amount of time given in seconds
+  const dayInSeconds = 60 * 60 * 24;
+  const hourInSeconds = 60 * 60;
+  const days = Math.floor(t / dayInSeconds);
+  const hours = Math.floor(t%dayInSeconds / hourInSeconds);
+  const minutes = Math.floor(t%hourInSeconds / 60);
+  const seconds = Math.floor(t % 60);
+  let res = "";
+  if (days > 0)
+    res += days + "d ";
+  if (days <= 3 && hours > 0) //TODO: 3 is arbitrary
+    res += hours + "h ";
+  if (days == 0 && minutes > 0)
+    res += (hours > 0 ? padDigits(minutes) + "m " : minutes + ":");
+  if (days == 0 && hours == 0)
+    res += padDigits(seconds);
+  return res.trim(); //remove potential last space
+}