const LONG_EVENT_HANDLER = process.env.NODEOPCUA_LONG_EVENT_HANDLER ? parseFloat(process.env.NODEOPCUA_LONG_EVENT_HANDLER) : 100; // how long a write can take before we log a warning

const convertHrtimeToMilliseconds = (hrtime: [number, number]) => {
    const seconds = hrtime[0];
    const nanoseconds = hrtime[1];
    return seconds * 1e3 + nanoseconds * 1e-6;
};

export function detectLongOperation(lambda: () => void, onLongOperation: (duration: number) => void): void {
    const start = process.hrtime();
    lambda();
    const duration = convertHrtimeToMilliseconds(process.hrtime(start));
    if (duration > LONG_EVENT_HANDLER) {
        onLongOperation(duration);
    }
}