export function measurePerformance() {
  if (typeof window === "undefined") return;

  window.addEventListener("load", () => {
    const perfData = performance.getEntriesByType(
      "navigation",
    )[0] as PerformanceNavigationTiming;

    const metrics = {
      dns: perfData.domainLookupEnd - perfData.domainLookupStart,
      tcp: perfData.connectEnd - perfData.connectStart,
      ttfb: perfData.responseStart - perfData.requestStart,
      download: perfData.responseEnd - perfData.responseStart,
      domInteractive: perfData.domInteractive - perfData.fetchStart,
      domComplete: perfData.domComplete - perfData.fetchStart,
      loadComplete: perfData.loadEventEnd - perfData.fetchStart,
    };

    console.log("⏱️ Performance Metrics:", metrics);

    // ارسال به analytics (اختیاری)
    if ((window as any).HabibApp) {
      (window as any).HabibApp.postMessage(
        JSON.stringify({
          action: "performance_metrics",
          data: metrics,
        }),
      );
    }
  });
}