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fix #1 #5

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180 changes: 109 additions & 71 deletions components/PasswordStrengthChecker.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,15 @@

import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { View, TextInput, StyleSheet, Dimensions, Text, Animated } from 'react-native';
import {
View,
TextInput,
StyleSheet,
Dimensions,
Text,
Animated,
ViewPropTypes,
} from 'react-native';
import zxcvbn from 'zxcvbn';
import _ from 'lodash';

Expand All @@ -21,7 +29,7 @@ const regex = {
lowerCasePattern: /[a-z]/,
upperCasePattern: /[A-Z]/,
wordsPattern: /\w/,
symbolsPattern: /\W/
symbolsPattern: /\W/,
};

export default class PasswordStrengthChecker extends Component {
Expand All @@ -34,117 +42,118 @@ export default class PasswordStrengthChecker extends Component {
label: 'Weak',
labelColor: '#fff',
widthPercent: 33,
innerBarColor: '#fe6c6c'
innerBarColor: '#fe6c6c',
},
{
label: 'Weak',
labelColor: '#fff',
widthPercent: 33,
innerBarColor: '#fe6c6c'
innerBarColor: '#fe6c6c',
},
{
label: 'Fair',
labelColor: '#fff',
widthPercent: 67,
innerBarColor: '#feb466'
innerBarColor: '#feb466',
},
{
label: 'Fair',
labelColor: '#fff',
widthPercent: 67,
innerBarColor: '#feb466'
innerBarColor: '#feb466',
},
{
label: 'Strong',
labelColor: '#fff',
widthPercent: 100,
innerBarColor: '#6cfeb5'
}
innerBarColor: '#6cfeb5',
},
],
tooShort: {
enabled: false,
labelColor: '#fff',
label: 'Too short',
widthPercent: 33,
innerBarColor: '#fe6c6c'
innerBarColor: '#fe6c6c',
},
barColor: '#ffffff',
barWidthPercent: 70,
showBarOnEmpty: true
showBarOnEmpty: true,
};

static propTypes = {
onChangeText: PropTypes.func.isRequired,
minLength: PropTypes.number,
ruleNames: PropTypes.string,
strengthLevels: PropTypes.array,
tooShort: PropTypes.object,
minLevel: PropTypes.number,
inputWrapperStyle: View.propTypes.style,
inputWrapperStyle: ViewPropTypes.style,
inputStyle: TextInput.propTypes.style,
strengthWrapperStyle: View.propTypes.style,
strengthBarStyle: View.propTypes.style,
innerStrengthBarStyle: View.propTypes.style,
strengthWrapperStyle: ViewPropTypes.style,
strengthBarStyle: ViewPropTypes.style,
innerStrengthBarStyle: ViewPropTypes.style,
strengthDescriptionStyle: Text.propTypes.style,
barColor: PropTypes.string,
barWidthPercent: PropTypes.number,
showBarOnEmpty: PropTypes.bool
showBarOnEmpty: PropTypes.bool,
};

constructor(props) {
super(props);
this.animatedInnerBarWidth = new Animated.Value(0);
this.animatedBarWidth = new Animated.Value(0);
this.state = {
level: -1,
isTooShort: false
}
isTooShort: false,
};
}

componentDidMount() {
const { showBarOnEmpty } = this.props;
if (showBarOnEmpty) {
this.showFullBar();
}
}

showFullBar(isShow = true) {
const { barWidthPercent } = this.props;
const barWidth = isShow ? widthByPercent(barWidthPercent) : 0;
Animated.timing(this.animatedBarWidth, {
toValue: barWidth,
duration: 20
duration: 20,
}).start();
}

isTooShort(password) {
const { minLength } = this.props;
if (!minLength) {
return true;
}
return password.length < minLength;
}

isMatchingRules(password) {
const { ruleNames } = this.props;
if (!ruleNames) {
return true;
}

const rules = _.chain(ruleNames)

const rules = _
.chain(ruleNames)
.split('|')
.filter(rule => !!rule)
.map(rule => rule.trim())
.value();

for (const rule of rules) {
if (!this.isMatchingRule(password, rule)) {
return false;
}
}
return true;
}

isMatchingRule(password, rule) {
switch (rule) {
case 'symbols':
Expand All @@ -163,46 +172,47 @@ export default class PasswordStrengthChecker extends Component {
return true;
}
}

calculateScore(text) {
if (!text) {
this.setState({
isTooShort: false
isTooShort: false,
});
return -1;
}

if (this.isTooShort(text)) {
this.setState({
isTooShort: true
isTooShort: true,
});
return 0;
}

this.setState({
isTooShort: false
isTooShort: false,
});

if (!this.isMatchingRules(text)) {
return 0;
}

return zxcvbn(text).score;
}

getPasswordStrengthLevel(password) {
return this.calculateScore(password);
}

onChangeText(password) {
const level = this.getPasswordStrengthLevel(password);
this.setState({
level: level
level: level,
});
const isValid = this.isMatchingRules(password) && level >= this.props.minLevel;
const isValid =
this.isMatchingRules(password) && level >= this.props.minLevel;
this.props.onChangeText(password, isValid);
}

renderPasswordInput() {
const { inputWrapperStyle, inputStyle } = this.props;
return (
Expand All @@ -220,7 +230,7 @@ export default class PasswordStrengthChecker extends Component {
</View>
);
}

renderPasswordStrength() {
const {
barWidthPercent,
Expand All @@ -231,37 +241,45 @@ export default class PasswordStrengthChecker extends Component {
strengthBarStyle,
innerStrengthBarStyle,
strengthDescriptionStyle,
showBarOnEmpty
showBarOnEmpty,
} = this.props;

const barWidth = widthByPercent(barWidthPercent);

const { level } = this.state;

let strengthLevelBarStyle = {}, strengthLevelLabelStyle = {}, strengthLevelLabel = '', innerBarWidth = 0;

let strengthLevelBarStyle = {},
strengthLevelLabelStyle = {},
strengthLevelLabel = '',
innerBarWidth = 0;
if (level !== -1) {

if (!showBarOnEmpty) {
this.showFullBar();
}

innerBarWidth = widthByPercent(strengthLevels[level].widthPercent, barWidth);

innerBarWidth = widthByPercent(
strengthLevels[level].widthPercent,
barWidth,
);
strengthLevelBarStyle = {
backgroundColor: strengthLevels[level].innerBarColor
backgroundColor: strengthLevels[level].innerBarColor,
};

strengthLevelLabelStyle = {
color: strengthLevels[level].labelColor
color: strengthLevels[level].labelColor,
};
strengthLevelLabel = strengthLevels[level].label;

if (tooShort.enabled && this.state.isTooShort) {
innerBarWidth = widthByPercent(tooShort.widthPercent, barWidth) || widthByPercent(strengthLevels[level].widthPercent, barWidth);
innerBarWidth =
widthByPercent(tooShort.widthPercent, barWidth) ||
widthByPercent(strengthLevels[level].widthPercent, barWidth);
strengthLevelBarStyle = {
backgroundColor: tooShort.innerBarColor || strengthLevels[level].innerBarColor
backgroundColor:
tooShort.innerBarColor || strengthLevels[level].innerBarColor,
};
strengthLevelLabelStyle = {
color: tooShort.labelColor || strengthLevels[level].labelColor
color: tooShort.labelColor || strengthLevels[level].labelColor,
};
strengthLevelLabel = tooShort.label || strengthLevels[level].label;
}
Expand All @@ -270,22 +288,42 @@ export default class PasswordStrengthChecker extends Component {
this.showFullBar(false);
}
}

Animated.timing(this.animatedInnerBarWidth, {
toValue: innerBarWidth,
duration: 800
duration: 800,
}).start();

return (
<View style={[styles.passwordStrengthWrapper, strengthWrapperStyle]}>
<Animated.View style={[styles.passwordStrengthBar, strengthBarStyle, { backgroundColor: barColor, width: this.animatedBarWidth }]}>
<Animated.View style={[styles.innerPasswordStrengthBar, innerStrengthBarStyle, { ...strengthLevelBarStyle, width: this.animatedInnerBarWidth }]} />
<Animated.View
style={[
styles.passwordStrengthBar,
strengthBarStyle,
{ backgroundColor: barColor, width: this.animatedBarWidth },
]}
>
<Animated.View
style={[
styles.innerPasswordStrengthBar,
innerStrengthBarStyle,
{ ...strengthLevelBarStyle, width: this.animatedInnerBarWidth },
]}
/>
</Animated.View>
<Text style={[styles.strengthDescription, strengthDescriptionStyle, { ...strengthLevelLabelStyle }]}>{strengthLevelLabel}</Text>
<Text
style={[
styles.strengthDescription,
strengthDescriptionStyle,
{ ...strengthLevelLabelStyle },
]}
>
{strengthLevelLabel}
</Text>
</View>
);
}

render() {
return (
<View style={styles.wrapper}>
Expand All @@ -307,31 +345,31 @@ const styles = StyleSheet.create({
alignItems: 'center',
backgroundColor: 'transparent',
borderBottomWidth: 0.8,
borderColor: 'rgba(242, 242, 242, 0.5)'
borderColor: 'rgba(242, 242, 242, 0.5)',
},
input: {
flex: 1,
color: '#fff',
paddingTop: 7,
paddingBottom: 10,
fontSize: 20
fontSize: 20,
},
passwordStrengthWrapper: {
flexDirection: 'row',
flexWrap: 'wrap',
marginBottom: 10
marginBottom: 10,
},
passwordStrengthBar: {
height: 10,
position: 'relative',
top: 5,
bottom: 5,
borderRadius: 5
borderRadius: 5,
},
innerPasswordStrengthBar: {
height: 10,
borderRadius: 5,
width: 0
width: 0,
},
strengthDescription: {
color: '#fff',
Expand All @@ -340,6 +378,6 @@ const styles = StyleSheet.create({
position: 'absolute',
right: 5,
top: 1,
fontSize: 14
}
fontSize: 14,
},
});