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import { useEffect, useRef, useCallback } from 'react';
declare global {
interface Window {
turnstile?: {
render: (
container: HTMLElement,
options: {
sitekey: string;
callback: (token: string) => void;
'expired-callback'?: () => void;
'error-callback'?: () => void;
theme?: 'light' | 'dark' | 'auto';
size?: 'normal' | 'compact' | 'invisible';
appearance?: 'always' | 'execute' | 'interaction-only';
}
) => string;
reset: (widgetId: string) => void;
remove: (widgetId: string) => void;
};
}
}
interface TurnstileProps {
siteKey: string;
onVerify: (token: string) => void;
onExpire?: () => void;
onError?: () => void;
theme?: 'light' | 'dark' | 'auto';
size?: 'normal' | 'compact' | 'invisible';
className?: string;
}
export function Turnstile({
siteKey,
onVerify,
onExpire,
onError,
theme = 'auto',
size = 'normal',
className,
}: TurnstileProps) {
const containerRef = useRef<HTMLDivElement>(null);
const widgetIdRef = useRef<string | null>(null);
const isRenderedRef = useRef(false);
// Store callbacks in refs to avoid re-renders causing widget recreation
const onVerifyRef = useRef(onVerify);
const onExpireRef = useRef(onExpire);
const onErrorRef = useRef(onError);
// Update refs when callbacks change
useEffect(() => {
onVerifyRef.current = onVerify;
onExpireRef.current = onExpire;
onErrorRef.current = onError;
}, [onVerify, onExpire, onError]);
useEffect(() => {
// Prevent multiple renders
if (isRenderedRef.current) return;
// Load Turnstile script if not already loaded
if (!document.getElementById('turnstile-script')) {
const script = document.createElement('script');
script.id = 'turnstile-script';
script.src = 'https://challenges.cloudflare.com/turnstile/v0/api.js';
script.async = true;
script.defer = true;
document.head.appendChild(script);
}
// Wait for script to load and render widget
const renderWidget = () => {
if (window.turnstile && containerRef.current && !widgetIdRef.current) {
isRenderedRef.current = true;
widgetIdRef.current = window.turnstile.render(containerRef.current, {
sitekey: siteKey,
callback: (token: string) => onVerifyRef.current(token),
'expired-callback': () => onExpireRef.current?.(),
'error-callback': () => onErrorRef.current?.(),
theme,
size,
});
}
};
// Check if script is already loaded
if (window.turnstile) {
renderWidget();
} else {
// Wait for script to load
const checkInterval = setInterval(() => {
if (window.turnstile) {
clearInterval(checkInterval);
renderWidget();
}
}, 100);
// Cleanup interval after 10 seconds
const timeout = setTimeout(() => clearInterval(checkInterval), 10000);
return () => {
clearInterval(checkInterval);
clearTimeout(timeout);
};
}
// Cleanup on unmount
return () => {
if (widgetIdRef.current && window.turnstile) {
window.turnstile.remove(widgetIdRef.current);
widgetIdRef.current = null;
isRenderedRef.current = false;
}
};
}, [siteKey, theme, size]); // Only re-render if these change, not callbacks
return <div ref={containerRef} className={className} />;
}
/**
* Hook to reset Turnstile widget
*/
export function useTurnstileReset() {
const reset = useCallback((widgetId: string) => {
if (window.turnstile && widgetId) {
window.turnstile.reset(widgetId);
}
}, []);
return reset;
}
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