Last active
January 27, 2021 05:59
-
-
Save petyappetrov/104e2f5a2d9d9b7b21094e1766b76751 to your computer and use it in GitHub Desktop.
Google reCAPTCHA V2 invisible mode make in React Hooks
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import { useCallback, useEffect, useRef } from "react"; | |
const RECAPTCHA_SCRIPT_URL = "https://www.google.com/recaptcha/api.js"; | |
const RECAPTCHA_SIZE = "invisible"; | |
const RECAPTCHA_RESPONSE_KEY = "responseCallback"; | |
const RECAPTCHA_EXPIRED_KEY = "expiredCallback"; | |
const RECAPTCHA_ERROR_KEY = "onerrorCallback"; | |
type RecapatchaOptions = { | |
siteKey: string; | |
}; | |
export interface ReCAPTCHA { | |
execute(): Promise<void>; | |
reset(): () => void; | |
ready(fn: () => void): Promise<void>; | |
} | |
export const useScript = (src: string) => { | |
return useCallback( | |
() => | |
new Promise<boolean>((resolve, reject) => { | |
const alreadyExistScript = document.querySelector( | |
`script[src="${src}"]` | |
); | |
if (alreadyExistScript) { | |
resolve(true); | |
} else { | |
const script = document.createElement("script"); | |
script.src = src; | |
script.async = true; | |
script.defer = true; | |
script.onload = () => resolve(true); | |
script.onerror = () => reject(new Error("Error loading script")); | |
document.body.appendChild(script); | |
} | |
}), | |
[src] | |
); | |
}; | |
export const useRecaptcha = (options: RecapatchaOptions) => { | |
const loadScript = useScript(RECAPTCHA_SCRIPT_URL); | |
const timerRef = useRef<NodeJS.Timeout | null>(null); | |
const isAvailable = (): boolean => | |
Boolean( | |
window && | |
window.grecaptcha && | |
window.grecaptcha.ready && | |
window.grecaptcha.execute | |
); | |
const checkBadge = useCallback( | |
() => | |
new Promise<boolean>((resolve) => { | |
const alreadyExistBadge = document.querySelector(".g-recaptcha"); | |
if (alreadyExistBadge) { | |
resolve(true); | |
} else { | |
const badge = document.createElement("div"); | |
badge.setAttribute("data-sitekey", options.siteKey); | |
badge.setAttribute("data-size", RECAPTCHA_SIZE); | |
badge.setAttribute("data-callback", RECAPTCHA_RESPONSE_KEY); | |
badge.setAttribute("data-expired-callback", RECAPTCHA_EXPIRED_KEY); | |
badge.setAttribute("data-error-callback", RECAPTCHA_ERROR_KEY); | |
badge.classList.add("g-recaptcha"); | |
document.body.appendChild(badge); | |
resolve(true); | |
} | |
}), | |
[options.siteKey] | |
); | |
const checkAvailable = useCallback(async (callback) => { | |
if (isAvailable()) { | |
if (timerRef.current) { | |
clearInterval(timerRef.current); | |
} | |
await window.grecaptcha.ready(() => {}); | |
if (typeof callback === "function") { | |
callback(); | |
} | |
} else { | |
timerRef.current = setInterval(() => checkAvailable(callback), 500); | |
} | |
}, []); | |
const prepareRecaptcha = useCallback( | |
() => | |
new Promise<boolean>(async (resolve, reject) => { | |
try { | |
await checkBadge(); | |
await loadScript(); | |
await checkAvailable(resolve); | |
} catch (error) { | |
reject(error); | |
} | |
}), | |
[checkAvailable, checkBadge, loadScript] | |
); | |
const execute = useCallback(() => { | |
return new Promise<string>(async (resolve, reject) => { | |
window[RECAPTCHA_ERROR_KEY] = reject; | |
window[RECAPTCHA_EXPIRED_KEY] = reject; | |
window[RECAPTCHA_RESPONSE_KEY] = (token: string) => { | |
resolve(token); | |
if (token) { | |
setTimeout(() => window.grecaptcha.reset(), 500); | |
} | |
}; | |
try { | |
await prepareRecaptcha(); | |
} catch (error) { | |
reject(error); | |
} | |
if (isAvailable()) { | |
window.grecaptcha.execute(); | |
} | |
}); | |
}, [prepareRecaptcha]); | |
useEffect(() => { | |
return () => { | |
if (timerRef.current) { | |
clearInterval(timerRef.current); | |
} | |
}; | |
}, []); | |
return execute; | |
}; | |
declare global { | |
interface Window { | |
[RECAPTCHA_RESPONSE_KEY]?: (token: string) => void; | |
[RECAPTCHA_ERROR_KEY]?: () => void; | |
[RECAPTCHA_EXPIRED_KEY]?: () => void; | |
grecaptcha: ReCAPTCHA; | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
How to use: