1 files changed, 73 insertions, 0 deletions
diff --git a/apps/web/src/lib/commands/timeline/element/effects/reorder-effect.ts b/apps/web/src/lib/commands/timeline/element/effects/reorder-effect.ts
new file mode 100644
index 00000000..81c66503
--- /dev/null
+++ b/apps/web/src/lib/commands/timeline/element/effects/reorder-effect.ts
@@ -0,0 +1,73 @@
+import { Command } from "@/lib/commands/base-command";
+import { EditorCore } from "@/core";
+import { isVisualElement, updateElementInTracks } from "@/lib/timeline";
+import type { TimelineTrack, VisualElement } from "@/types/timeline";
+
+function reorderEffectsOnElement({
+	element,
+	fromIndex,
+	toIndex,
+}: {
+	element: VisualElement;
+	fromIndex: number;
+	toIndex: number;
+}): VisualElement {
+	const effects = [...(element.effects ?? [])];
+	const [moved] = effects.splice(fromIndex, 1);
+	effects.splice(toIndex, 0, moved);
+	return { ...element, effects };
+}
+
+export class ReorderClipEffectsCommand extends Command {
+	private savedState: TimelineTrack[] | null = null;
+	private readonly trackId: string;
+	private readonly elementId: string;
+	private readonly fromIndex: number;
+	private readonly toIndex: number;
+
+	constructor({
+		trackId,
+		elementId,
+		fromIndex,
+		toIndex,
+	}: {
+		trackId: string;
+		elementId: string;
+		fromIndex: number;
+		toIndex: number;
+	}) {
+		super();
+		this.trackId = trackId;
+		this.elementId = elementId;
+		this.fromIndex = fromIndex;
+		this.toIndex = toIndex;
+	}
+
+	execute(): void {
+		const editor = EditorCore.getInstance();
+		this.savedState = editor.timeline.getTracks();
+
+		const updatedTracks = updateElementInTracks({
+			tracks: this.savedState,
+			trackId: this.trackId,
+			elementId: this.elementId,
+			elementPredicate: isVisualElement,
+		update: (element) => {
+			return reorderEffectsOnElement({
+				element: element as VisualElement,
+				fromIndex: this.fromIndex,
+				toIndex: this.toIndex,
+			});
+			},
+		});
+
+		editor.timeline.updateTracks(updatedTracks);
+	}
+
+	undo(): void {
+		if (this.savedState) {
+			const editor = EditorCore.getInstance();
+			editor.timeline.updateTracks(this.savedState);
+		}
+	}
+}