feat: Add delay until action for delay app

packages/backend/src/helpers/delay-for-as-milliseconds.ts

@@ -0,0 +1,21 @@
+export type TDelayForUnit = 'minutes' | 'hours' | 'days' | 'weeks';
+
+const delayAsMilliseconds = (
+  delayForUnit: TDelayForUnit,
+  delayForValue: number
+) => {
+  switch (delayForUnit) {
+    case 'minutes':
+      return delayForValue * 60 * 1000;
+    case 'hours':
+      return delayForValue * 60 * 60 * 1000;
+    case 'days':
+      return delayForValue * 24 * 60 * 60 * 1000;
+    case 'weeks':
+      return delayForValue * 7 * 24 * 60 * 60 * 1000;
+    default:
+      return 0;
+  }
+};
+
+export default delayAsMilliseconds;