openscreen/src/native/hooks/useCursorTelemetry.ts

import { useEffect, useState } from "react";
import type { CursorTelemetryPoint } from "@/components/video-editor/types";
import { nativeBridgeClient } from "../client";

interface UseCursorTelemetryResult {
	samples: CursorTelemetryPoint[];
	loading: boolean;
	error: string | null;
}

export function useCursorTelemetry(videoPath: string | null): UseCursorTelemetryResult {
	const [samples, setSamples] = useState<CursorTelemetryPoint[]>([]);
	const [loading, setLoading] = useState(false);
	const [error, setError] = useState<string | null>(null);

	useEffect(() => {
		let cancelled = false;

		async function loadCursorTelemetry() {
			if (!videoPath) {
				setSamples([]);
				setLoading(false);
				setError(null);
				return;
			}

			setLoading(true);
			setError(null);

			try {
				const nextSamples = await nativeBridgeClient.cursor.getTelemetry(videoPath);
				if (!cancelled) {
					setSamples(nextSamples);
				}
			} catch (nextError) {
				if (!cancelled) {
					setSamples([]);
					setError(
						nextError instanceof Error ? nextError.message : "Failed to load cursor telemetry",
					);
				}
			} finally {
				if (!cancelled) {
					setLoading(false);
				}
			}
		}

		loadCursorTelemetry();

		return () => {
			cancelled = true;
		};
	}, [videoPath]);

	return {
		samples,
		loading,
		error,
	};
}