Over under (#771)

* feat: schedule offset

packages/utils/src/rundown-utils/rundownUtils.test.ts

@@ -1,6 +1,6 @@
 import { OntimeEvent, OntimeRundown, SupportedEvent } from 'ontime-types';
 
-import { getNext, getNextEvent, getPrevious, getPreviousEvent, swapEventData } from './rundownUtils';
+import { getLastEvent, getNext, getNextEvent, getPrevious, getPreviousEvent, swapEventData } from './rundownUtils';
 
 describe('getNext()', () => {
   it('returns the next event of type event', () => {
@@ -189,3 +189,23 @@ describe('swapEventData', () => {
     });
   });
 });
+
+describe('getLastEvent', () => {
+  it('returns the last event of type event', () => {
+    const testRundown = [
+      { id: '1', type: SupportedEvent.Event },
+      { id: '2', type: SupportedEvent.Delay },
+      { id: '3', type: SupportedEvent.Event },
+      { id: '4', type: SupportedEvent.Block },
+    ];
+
+    const { lastEvent } = getLastEvent(testRundown as OntimeRundown);
+    expect(lastEvent?.id).toBe('3');
+  });
+  it('handles rundowns with a single event', () => {
+    const testRundown = [{ id: '1', type: SupportedEvent.Event }];
+
+    const { lastEvent } = getLastEvent(testRundown as OntimeRundown);
+    expect(lastEvent?.id).toBe('1');
+  });
+});

packages/utils/src/rundown-utils/rundownUtils.ts

@@ -74,7 +74,7 @@ export function getLastEvent(rundown: OntimeRundown): {
     return { lastEvent: null, lastIndex: null };
   }
 
-  for (let i = rundown.length - 1; i > 0; i--) {
+  for (let i = rundown.length - 1; i >= 0; i--) {
     const lastEvent = rundown.at(i);
     if (isOntimeEvent(lastEvent)) {
       return { lastEvent, lastIndex: i };
@@ -100,7 +100,7 @@ export function getLastEventNormal(
     return { lastEvent: null, lastIndex: null };
   }
 
-  for (let i = order.length - 1; i > 0; i--) {
+  for (let i = order.length - 1; i >= 0; i--) {
     const lastId = order[i];
     const lastEvent = rundown[lastId];
     if (isOntimeEvent(lastEvent)) {