accounts-frontend/src/components/ui/form/Captcha.js

// @flow
import React from 'react';
import classNames from 'classnames';
import type { CaptchaID } from 'services/captcha';
import type { Skin } from 'components/ui';
import captcha from 'services/captcha';
import logger from 'services/logger';
import { ComponentLoader } from 'components/ui/loader';

import styles from './form.scss';
import FormInputComponent from './FormInputComponent';

export default class Captcha extends FormInputComponent<{
    delay: number,
    skin: Skin,
}, {
    code: string,
}> {
    elRef = React.createRef<HTMLDivElement>();
    captchaId: CaptchaID;

    static defaultProps = {
        skin: 'dark',
        delay: 0
    };

    componentDidMount() {
        setTimeout(() => {
            const {current: el} = this.elRef;

            el && captcha.render(el, {
                skin: this.props.skin,
                onSetCode: this.setCode
            })
                .then((captchaId) => {this.captchaId = captchaId;})
                .catch((error) => {
                    logger.error('Failed rendering captcha', {
                        error
                    });
                });
        }, this.props.delay);
    }

    render() {
        const {skin} = this.props;

        return (
            <div className={styles.captchaContainer}>
                <div className={styles.captchaLoader}>
                    <ComponentLoader />
                </div>

                <div ref={this.elRef} className={classNames(
                    styles.captcha,
                    styles[`${skin}Captcha`]
                )} />

                {this.renderError()}
            </div>
        );
    }

    reset() {
        captcha.reset(this.captchaId);
    }

    getValue() {
        return this.state && this.state.code;
    }

    onFormInvalid() {
        this.reset();
    }

    setCode = (code: string) => this.setState({code});
}