formbricks/apps/web/app/PostHogClient.tsx

"use client";

import { env } from "@/env.mjs";
import { usePathname, useSearchParams } from "next/navigation";
import posthog from "posthog-js";
import { PostHogProvider } from "posthog-js/react";
import { useEffect } from "react";

const posthogEnabled = env.NEXT_PUBLIC_POSTHOG_API_KEY && env.NEXT_PUBLIC_POSTHOG_API_HOST;

if (typeof window !== "undefined") {
  if (posthogEnabled) {
    posthog.init(process.env.NEXT_PUBLIC_POSTHOG_API_KEY!, {
      api_host: process.env.NEXT_PUBLIC_POSTHOG_API_HOST,
    });
  }
}

export function PostHogPageview(): JSX.Element {
  const pathname = usePathname();
  const searchParams = useSearchParams();

  useEffect(() => {
    if (posthogEnabled && pathname) {
      let url = window.origin + pathname;
      if (searchParams && searchParams.toString()) {
        url = url + `?${searchParams.toString()}`;
      }
      posthog.capture("$pageview", {
        $current_url: url,
      });
    }
  }, [pathname, searchParams]);

  return <></>;
}

export function PHProvider({ children }: { children: React.ReactNode }) {
  return posthogEnabled ? <PostHogProvider client={posthog}>{children}</PostHogProvider> : children;
}