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import { Command } from "@/lib/commands/base-command";
import type { TimelineTrack } from "@/types/timeline";
import { EditorCore } from "@/core";
import { clampAnimationsToDuration } from "@/lib/animation";
export class UpdateElementTrimCommand extends Command {
private savedState: TimelineTrack[] | null = null;
private readonly elementId: string;
private readonly trimStart: number;
private readonly trimEnd: number;
private readonly startTime: number | undefined;
private readonly duration: number | undefined;
constructor({
elementId,
trimStart,
trimEnd,
startTime,
duration,
}: {
elementId: string;
trimStart: number;
trimEnd: number;
startTime?: number;
duration?: number;
}) {
super();
this.elementId = elementId;
this.trimStart = trimStart;
this.trimEnd = trimEnd;
this.startTime = startTime;
this.duration = duration;
}
execute(): void {
const editor = EditorCore.getInstance();
this.savedState = editor.timeline.getTracks();
const updatedTracks = this.savedState.map((track) => {
const newElements = track.elements.map((element) => {
if (element.id !== this.elementId) {
return element;
}
const nextDuration = this.duration ?? element.duration;
return {
...element,
trimStart: this.trimStart,
trimEnd: this.trimEnd,
startTime: this.startTime ?? element.startTime,
duration: nextDuration,
animations: clampAnimationsToDuration({
animations: element.animations,
duration: nextDuration,
}),
};
});
return { ...track, elements: newElements } as typeof track;
});
editor.timeline.updateTracks(updatedTracks);
}
undo(): void {
if (this.savedState) {
const editor = EditorCore.getInstance();
editor.timeline.updateTracks(this.savedState);
}
}
}
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