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React Prosopo Procaptcha Component Library

React components for integrating the Prosopo procaptcha into a React app.

Prosopo is a distributed human verification service that can be used to stop bots from interacting with smart contracts. Sign up to be a network alpha tester.

Installation

You can install this library with:

npm install @prosopo/procaptcha-react --save

Basic Usage

See the client example for a minimal example of these components being used in a frontend app.

<Box className={"App"}>

  
      <CaptchaContextManager.Provider value={manager}>
        {showCaptchas &&
          <CaptchaComponent {...{ clientInterface }} />}
      </CaptchaContextManager.Provider>

      {!showCaptchas &&
        <Button onClick={showCaptchaClick} className={"iAmHumanButton"}>
          <Typography className={"iAmHumanButtonLabel"}>
            I am human
          </Typography>
        </Button>}

    </Box>

Callbacks

CaptchaEventCallbacks are passed to the captcha component at creation.

const clientInterface = useCaptcha({ config }, { onAccountChange, onChange, onSubmit, onSolved, onCancel });

The captcha event callbacks are defined as follows:

export interface CaptchaEventCallbacks extends ICaptchaClientEvents, ICaptchaStateClientEvents { }

export interface ICaptchaClientEvents {
  onLoad?: (extension: IExtensionInterface, contractAddress: string) => void;
  onAccountChange?: (account?: TExtensionAccount) => void;
}

export interface ICaptchaStateClientEvents {
  onLoadCaptcha?: (captchaChallenge: GetCaptchaResponse | Error) => void;
  onSubmit?: (result: TCaptchaSubmitResult | Error, captchaState: ICaptchaState) => void;
  onChange?: (captchaSolution: number[][], index: number) => void;
  onCancel?: () => void;
  onSolved?: (result: TCaptchaSubmitResult, isHuman?: boolean) => void;
}

onAccountChange

When an account is connected or disconnected.

onLoadCaptcha

After a captcha challenge has loaded/failed to load, updates captchaChallenge state and resets captchaIndex.

onChange

When the captchaSolution is updated (after clicking an image).

onSubmit

Event fired after captcha solution has been submitted. Resets captchaSolution state.

onSolved

When captcha is solved. after clearing captchaChallenge.

onCancel

When captcha is dismissed. before clearing captchaChallenge.