feat: import work hours from SaaS and exchange signed time sheet

src/Twig/AppRuntime.php

@@ -30,6 +30,24 @@ class AppRuntime implements RuntimeExtensionInterface
     ) {
     }
 
+    /**
+     * Minutes as hours and minutes, the way a timesheet reads them: 510 becomes "8:30".
+     *
+     * Hours are not padded and not capped at 24 - a month total is a perfectly ordinary
+     * "195:45". Null is a day the SaaS never reported, which is not the same as zero.
+     */
+    public function formatDurationHoursMinutes(?int $minutes, string $empty = '–'): string
+    {
+        if (null === $minutes) {
+            return $empty;
+        }
+
+        $sign = $minutes < 0 ? '-' : '';
+        $minutes = abs($minutes);
+
+        return sprintf('%s%d:%02d', $sign, intdiv($minutes, 60), $minutes % 60);
+    }
+
     public function seasonAssignmentLabel(SeasonAssignment $seasonAssignment): string
     {
         return $this->seasonAssignmentLabeler->label($seasonAssignment);