1 files changed, 39 insertions, 0 deletions
diff --git a/apps/web/src/lib/animation/property-groups.ts b/apps/web/src/lib/animation/property-groups.ts
new file mode 100644
index 00000000..61b4fc4a
--- /dev/null
+++ b/apps/web/src/lib/animation/property-groups.ts
@@ -0,0 +1,39 @@
+import type {
+	AnimationPropertyGroup,
+	AnimationPropertyPath,
+	ElementAnimations,
+} from "@/lib/animation/types";
+import { ANIMATION_PROPERTY_GROUPS } from "@/lib/animation/types";
+import { getKeyframeAtTime } from "./keyframe-query";
+
+export interface GroupKeyframeRef {
+	propertyPath: AnimationPropertyPath;
+	keyframeId: string;
+}
+
+export function getGroupKeyframesAtTime({
+	animations,
+	group,
+	time,
+}: {
+	animations: ElementAnimations | undefined;
+	group: AnimationPropertyGroup;
+	time: number;
+}): GroupKeyframeRef[] {
+	return ANIMATION_PROPERTY_GROUPS[group].flatMap((propertyPath) => {
+		const keyframe = getKeyframeAtTime({ animations, propertyPath, time });
+		return keyframe ? [{ propertyPath, keyframeId: keyframe.id }] : [];
+	});
+}
+
+export function hasGroupKeyframeAtTime({
+	animations,
+	group,
+	time,
+}: {
+	animations: ElementAnimations | undefined;
+	group: AnimationPropertyGroup;
+	time: number;
+}): boolean {
+	return getGroupKeyframesAtTime({ animations, group, time }).length > 0;
+}