timer has formatted timetag

server/src/classes/Timer.js

@@ -4,10 +4,13 @@
  *
  */
 
+import { stringFromMillis } from '../utils/time.js';
+
 export class Timer {
   clock = null;
   duration = null;
   current = null;
+  timeTag = null;
   secondaryTimer = null;
   _finishAt = null;
   _finishedAt = null;
@@ -133,8 +136,12 @@ export class Timer {
 
   // getObject
   getObject() {
+    // update timer
     this.update();
 
+    // update timetag
+    this.timeTag = stringFromMillis(this.current);
+
     return {
       clock: this.clock,
       running: Timer.toSeconds(this.current),

server/src/utils/time.js

@@ -0,0 +1,18 @@
+export const stringFromMillis = (
+  ms,
+  showSeconds = true,
+  delim = ':',
+  ifNull = '...'
+) => {
+  if (ms === null || isNaN(ms)) return ifNull;
+  const showWith0 = (value) => (value < 10 ? `0${value}` : value);
+  const hours = showWith0(Math.floor(((ms / (1000 * 60 * 60)) % 60) % 24));
+  const minutes = showWith0(Math.floor((ms / (1000 * 60)) % 60));
+  const seconds = showWith0(Math.floor((ms / 1000) % 60));
+
+  return showSeconds
+    ? `${
+        parseInt(hours) ? `${hours}${delim}` : `00${delim}`
+      }${minutes}${delim}${seconds}`
+    : `${parseInt(hours) ? `${hours}` : '00'}${delim}${minutes}`;
+};