"use client";

import React, { useEffect, Suspense } from "react";
import { usePathname, useSearchParams } from "next/navigation";
import { ScrollDepthTracker } from "./analytics/ScrollDepthTracker";
import { getDefaultAnalytics } from "../utils/analytics";
import { getDefaultErrorTracking } from "../utils/error-tracking";

const AnalyticsInner: React.FC = () => {
  const pathname = usePathname();
  const searchParams = useSearchParams();

  // Track pageviews on route change
  useEffect(() => {
    if (!pathname) return;

    const analytics = getDefaultAnalytics();
    const url = `${pathname}${searchParams?.size ? `?${searchParams.toString()}` : ""}`;

    analytics.page(url);
  }, [pathname, searchParams]);

  useEffect(() => {
    const analytics = getDefaultAnalytics();
    const errorTracking = getDefaultErrorTracking();

    // Track page load performance
    const trackPageLoad = () => {
      // ... existing implementation ...
      const perfData = performance.getEntriesByType(
        "navigation",
      )[0] as PerformanceNavigationTiming;
      if (
        perfData &&
        typeof perfData.loadEventEnd === "number" &&
        typeof perfData.startTime === "number"
      ) {
        const loadTime = perfData.loadEventEnd - perfData.startTime;
        analytics.trackPageLoad(
          loadTime,
          window.location.pathname,
          navigator.userAgent,
        );
      }
    };

    // Track outbound links
    const trackOutboundLinks = () => {
      document.querySelectorAll('a[href^="http"]').forEach((link) => {
        const anchor = link as HTMLAnchorElement;
        if (!anchor.href.includes(window.location.hostname)) {
          anchor.addEventListener("click", () => {
            analytics.trackOutboundLink(
              anchor.href,
              anchor.textContent?.trim() || "unknown",
            );
          });
        }
      });
    };

    // Track search
    const trackSearch = () => {
      const searchInput = document.querySelector(
        'input[type="search"]',
      ) as HTMLInputElement;
      if (searchInput) {
        const handleSearch = (e: Event) => {
          const target = e.target as HTMLInputElement;
          if (target.value) {
            analytics.trackSearch(target.value, window.location.pathname);
          }
        };
        searchInput.addEventListener("search", handleSearch);
        return () => searchInput.removeEventListener("search", handleSearch);
      }
    };

    // Global error handler for error tracking
    const handleGlobalError = (event: ErrorEvent) => {
      errorTracking.captureException(event.error || event.message);
    };

    const handleUnhandledRejection = (event: PromiseRejectionEvent) => {
      errorTracking.captureException(event.reason);
    };

    window.addEventListener("error", handleGlobalError);
    window.addEventListener("unhandledrejection", handleUnhandledRejection);

    // Initial load tracking
    if (document.readyState === "complete") {
      trackPageLoad();
      trackOutboundLinks();
      const cleanupSearch = trackSearch();
      return () => {
        if (cleanupSearch) cleanupSearch();
        window.removeEventListener("error", handleGlobalError);
        window.removeEventListener(
          "unhandledrejection",
          handleUnhandledRejection,
        );
      };
    } else {
      window.addEventListener("load", () => {
        trackPageLoad();
        trackOutboundLinks();
        // search tracking might need to wait for hydration/render
      });
      // Fallback/standard cleanup
      return () => {
        window.removeEventListener("error", handleGlobalError);
        window.removeEventListener(
          "unhandledrejection",
          handleUnhandledRejection,
        );
      };
    }
  }, []);

  const analytics = getDefaultAnalytics();
  const adapter = analytics.getAdapter();
  const scriptTag = adapter.getScriptTag ? adapter.getScriptTag() : null;

  return (
    <>
      <ScrollDepthTracker />
      {scriptTag && (
        <div
          dangerouslySetInnerHTML={{ __html: scriptTag }}
          style={{ display: "none" }}
        />
      )}
    </>
  );
};

export const Analytics: React.FC = () => {
  return (
    <Suspense fallback={null}>
      <AnalyticsInner />
    </Suspense>
  );
};
