54 lines
1.3 KiB
TypeScript
54 lines
1.3 KiB
TypeScript
// Copyright 2017-2020 @polkadot/react-components authors & contributors
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// This software may be modified and distributed under the terms
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// of the Apache-2.0 license. See the LICENSE file for details.
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import React from 'react';
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import styled from 'styled-components';
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interface Props {
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className?: string;
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value: string;
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}
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function calcStrength (password: string): number {
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// at least 8 characters
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return (/.{8,}/.test(password) ? 1 : 0) * (
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// bonus if longer
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(/.{12,}/.test(password) ? 1 : 0) +
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// a lower letter
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(/[a-z]/.test(password) ? 1 : 0) +
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// a upper letter
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(/[A-Z]/.test(password) ? 1 : 0) +
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// a digit
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(/\d/.test(password) ? 1 : 0) +
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// a special character
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(/[^A-Za-z0-9]/.test(password) ? 1 : 0)
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);
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}
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function PasswordStrength ({ className = '', value }: Props): React.ReactElement<Props> {
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// No need for memo, component is already memo-ed (only changes on value)
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const style = { width: `${calcStrength(value) * 20}%` };
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return (
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<div className={className}>
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<div
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className='highlight--bg'
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style={style}
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/>
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</div>
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);
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}
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export default React.memo(styled(PasswordStrength)`
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background: ##eee6e6;
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border-radius: 0.25rem;
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margin-left: 2rem;
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margin-top: 0.25rem;
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overflow: hidden;
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> div {
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height: 0.5rem;
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}
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`);
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