plane/apps/app/components/account/google-login.tsx

import { FC, CSSProperties, useEffect, useRef, useCallback, useState } from "react";

import Script from "next/script";

export interface IGoogleLoginButton {
  text?: string;
  handleSignIn: React.Dispatch<any>;
  styles?: CSSProperties;
}

export const GoogleLoginButton: FC<IGoogleLoginButton> = ({ handleSignIn }) => {
  const googleSignInButton = useRef<HTMLDivElement>(null);
  const [gsiScriptLoaded, setGsiScriptLoaded] = useState(false);

  const loadScript = useCallback(() => {
    if (!googleSignInButton.current || gsiScriptLoaded) return;

    window?.google?.accounts.id.initialize({
      client_id: process.env.NEXT_PUBLIC_GOOGLE_CLIENTID || "",
      callback: handleSignIn,
    });

    try {
      window?.google?.accounts.id.renderButton(
        googleSignInButton.current,
        {
          type: "standard",
          theme: "outline",
          size: "large",
          logo_alignment: "center",
          width: 360,
          text: "signin_with",
        } as GsiButtonConfiguration // customization attributes
      );
    } catch (err) {
      console.log(err);
    }

    window?.google?.accounts.id.prompt(); // also display the One Tap dialog

    setGsiScriptLoaded(true);
  }, [handleSignIn, gsiScriptLoaded]);

  useEffect(() => {
    if (window?.google?.accounts?.id) {
      loadScript();
    }
    return () => {
      window?.google?.accounts.id.cancel();
    };
  }, [loadScript]);

  return (
    <>
      <Script src="https://accounts.google.com/gsi/client" async defer onLoad={loadScript} />
      <div
        className="overflow-hidden rounded w-full"
        id="googleSignInButton"
        ref={googleSignInButton}
      />
    </>
  );
};