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import { EditorCore } from "@/core";
import { retimeElementKeyframe } from "@/animation";
import { Command, type CommandResult } from "@/commands/base-command";
import { updateElementInSceneTracks } from "@/timeline";
import type { AnimationPath } from "@/animation/types";
import type { SceneTracks } from "@/timeline";
import {
type MediaTime,
maxMediaTime,
minMediaTime,
ZERO_MEDIA_TIME,
} from "@/wasm";
import { resolveAnimationTarget } from "@/timeline/animation-targets";
export class RetimeKeyframeCommand extends Command {
private savedState: SceneTracks | null = null;
private readonly trackId: string;
private readonly elementId: string;
private readonly propertyPath: AnimationPath;
private readonly keyframeId: string;
private readonly nextTime: MediaTime;
constructor({
trackId,
elementId,
propertyPath,
keyframeId,
nextTime,
}: {
trackId: string;
elementId: string;
propertyPath: AnimationPath;
keyframeId: string;
nextTime: MediaTime;
}) {
super();
this.trackId = trackId;
this.elementId = elementId;
this.propertyPath = propertyPath;
this.keyframeId = keyframeId;
this.nextTime = nextTime;
}
execute(): CommandResult | undefined {
const editor = EditorCore.getInstance();
this.savedState = editor.scenes.getActiveScene().tracks;
const updatedTracks = updateElementInSceneTracks({
tracks: this.savedState,
trackId: this.trackId,
elementId: this.elementId,
update: (element) => {
if (!resolveAnimationTarget({ element, path: this.propertyPath })) {
return element;
}
const boundedTime = maxMediaTime({
a: ZERO_MEDIA_TIME,
b: minMediaTime({ a: this.nextTime, b: element.duration }),
});
return {
...element,
animations: retimeElementKeyframe({
animations: element.animations,
propertyPath: this.propertyPath,
keyframeId: this.keyframeId,
time: boundedTime,
}),
};
},
});
editor.timeline.updateTracks(updatedTracks);
return undefined;
}
undo(): void {
if (!this.savedState) {
return;
}
const editor = EditorCore.getInstance();
editor.timeline.updateTracks(this.savedState);
}
}
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