refactor: refetch on change

apps/server/src/services/rundown-service/RundownService.ts

@@ -247,7 +247,11 @@ function notifyChanges(options: { timer?: boolean | string[]; external?: boolean
 
   if (options.external) {
     // advice socket subscribers of change
-    sendRefetch(Array.isArray(options.timer) ? options.timer : undefined);
+    const payload = {
+      changes: Array.isArray(options.timer) ? options.timer : undefined,
+      revision: cache.getMetadata().revision,
+    };
+    sendRefetch(payload);
   }
 }
 

apps/server/src/services/rundown-service/rundownCache.ts

@@ -215,6 +215,7 @@ export function getMetadata() {
     lastEnd,
     totalDelay,
     totalDuration,
+    revision,
   };
 }
 
@@ -243,6 +244,12 @@ export function mutateCache<T extends object>(mutation: MutatingFn<T>) {
 
     const { newEvent, newRundown, didMutate } = mutation({ ...params, persistedRundown });
 
+    // early return without calling side effects
+    if (!didMutate) {
+      isStale = false;
+      return { newEvent, newRundown, didMutate };
+    }
+
     revision = revision + 1;
     persistedRundown = newRundown;