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import { Command, type CommandResult } from "@/lib/commands/base-command";
import { EditorCore } from "@/core";
import { isVisualElement, updateElementInTracks } from "@/lib/timeline";
import type { TimelineTrack, VisualElement } from "@/lib/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(): CommandResult | undefined {
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);
return undefined;
}
undo(): void {
if (this.savedState) {
const editor = EditorCore.getInstance();
editor.timeline.updateTracks(this.savedState);
}
}
}
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