add warning and danger transitions as timer life cycle events (#1071)

* setup detection of TImerPhase changes

* add integration event for transition to warning

* add integration event for transition to danger

---------

Co-authored-by: Carlos Valente <34649812+cpvalente@users.noreply.github.com>

apps/server/src/services/runtime-service/RuntimeService.ts

@@ -1,4 +1,13 @@
-import { EndAction, LogOrigin, MaybeNumber, OntimeEvent, Playback, RuntimeStore, TimerLifeCycle } from 'ontime-types';
+import {
+  EndAction,
+  LogOrigin,
+  MaybeNumber,
+  OntimeEvent,
+  Playback,
+  RuntimeStore,
+  TimerLifeCycle,
+  TimerPhase,
+} from 'ontime-types';
 import { millisToString, validatePlayback } from 'ontime-utils';
 
 import { deepEqual } from 'fast-equals';
@@ -93,6 +102,25 @@ class RuntimeService {
       const rundown = getPlayableEvents();
       this.eventTimer.roll(rundown);
     }
+
+    const timerPhaseChanged = RuntimeService.previousState.timer?.phase !== newState.timer.phase;
+
+    if (timerPhaseChanged) {
+      switch (newState.timer.phase) {
+        case TimerPhase.Warning:
+          process.nextTick(() => {
+            integrationService.dispatch(TimerLifeCycle.onWarning);
+          });
+          break;
+        case TimerPhase.Danger:
+          process.nextTick(() => {
+            integrationService.dispatch(TimerLifeCycle.onDanger);
+          });
+          break;
+        default:
+          break;
+      }
+    }
   }
 
   /** delay initialisation until we have a restore point */