codebase overhaul (#697)

1 files changed, 48 insertions, 0 deletions

diff --git a/apps/web/src/lib/commands/timeline/element/delete-elements.ts b/apps/web/src/lib/commands/timeline/element/delete-elements.ts
new file mode 100644
index 00000000..91eb6397
--- /dev/null
+++ b/apps/web/src/lib/commands/timeline/element/delete-elements.ts
@@ -0,0 +1,48 @@
+import { Command } from "@/lib/commands/base-command";
+import type { TimelineTrack } from "@/types/timeline";
+import { EditorCore } from "@/core";
+import { isMainTrack } from "@/lib/timeline";
+
+export class DeleteElementsCommand extends Command {
+	private savedState: TimelineTrack[] | null = null;
+
+	constructor(private elements: { trackId: string; elementId: string }[]) {
+		super();
+	}
+
+	execute(): void {
+		const editor = EditorCore.getInstance();
+		this.savedState = editor.timeline.getTracks();
+
+		const updatedTracks = this.savedState
+			.map((track) => {
+				const hasElementsToDelete = this.elements.some(
+					(el) => el.trackId === track.id,
+				);
+
+				if (!hasElementsToDelete) {
+					return track;
+				}
+
+				return {
+					...track,
+					elements: track.elements.filter(
+						(element) =>
+							!this.elements.some(
+								(el) => el.trackId === track.id && el.elementId === element.id,
+							),
+					),
+				} as typeof track;
+			})
+			.filter((track) => track.elements.length > 0 || isMainTrack(track));
+
+		editor.timeline.updateTracks(updatedTracks);
+	}
+
+	undo(): void {
+		if (this.savedState) {
+			const editor = EditorCore.getInstance();
+			editor.timeline.updateTracks(this.savedState);
+		}
+	}
+}