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import { Command, type CommandResult } from "@/lib/commands/base-command";
import type { TimelineTrack } from "@/lib/timeline";
import { EditorCore } from "@/core";
export class DeleteElementsCommand extends Command {
private savedState: TimelineTrack[] | null = null;
private readonly elements: { trackId: string; elementId: string }[];
constructor({
elements,
}: {
elements: { trackId: string; elementId: string }[];
}) {
super();
this.elements = elements;
}
execute(): CommandResult | undefined {
const editor = EditorCore.getInstance();
this.savedState = editor.timeline.getTracks();
const updatedTracks = this.savedState.map((track) => {
const elementsToDeleteOnTrack = this.elements.filter(
(target) => target.trackId === track.id,
);
if (elementsToDeleteOnTrack.length === 0) {
return track;
}
const elements = track.elements.filter(
(element) =>
!this.elements.some(
(target) =>
target.trackId === track.id &&
target.elementId === element.id,
),
);
return { ...track, elements } as typeof track;
});
editor.timeline.updateTracks(updatedTracks);
return {
select: [],
};
}
undo(): void {
if (this.savedState) {
const editor = EditorCore.getInstance();
editor.timeline.updateTracks(this.savedState);
}
}
}
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