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UnlockWith.tsx
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UnlockWith.tsx
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import React, { useCallback, useContext, useEffect, useReducer, useRef } from 'react';
import { View, Image, TouchableOpacity, ActivityIndicator, useColorScheme, NativeModules, StyleSheet } from 'react-native';
import { Icon } from 'react-native-elements';
import Biometric, { BiometricType } from './class/biometrics';
import { StackActions, useNavigation } from '@react-navigation/native';
import { BlueStorageContext } from './blue_modules/storage-context';
import { isHandset } from './blue_modules/environment';
import triggerHapticFeedback, { HapticFeedbackTypes } from './blue_modules/hapticFeedback';
import SafeArea from './components/SafeArea';
enum AuthType {
Encrypted,
Biometrics,
None,
}
type State = {
auth: {
type: AuthType;
detail: keyof typeof BiometricType | undefined;
};
isAuthenticating: boolean;
};
const SET_AUTH = 'SET_AUTH';
const SET_IS_AUTHENTICATING = 'SET_IS_AUTHENTICATING';
type Action =
| { type: typeof SET_AUTH; payload: { type: AuthType; detail: keyof typeof BiometricType | undefined } }
| { type: typeof SET_IS_AUTHENTICATING; payload: boolean };
const initialState: State = {
auth: {
type: AuthType.None,
detail: undefined,
},
isAuthenticating: false,
};
function reducer(state: State, action: Action): State {
switch (action.type) {
case SET_AUTH:
return { ...state, auth: action.payload };
case SET_IS_AUTHENTICATING:
return { ...state, isAuthenticating: action.payload };
default:
return state;
}
}
const { SplashScreen } = NativeModules;
const UnlockWith: React.FC = () => {
const [state, dispatch] = useReducer(reducer, initialState);
const isUnlockingWallets = useRef(false);
const { setWalletsInitialized, isStorageEncrypted, startAndDecrypt } = useContext(BlueStorageContext);
const navigation = useNavigation();
const colorScheme = useColorScheme();
const successfullyAuthenticated = useCallback(() => {
setWalletsInitialized(true);
navigation.dispatch(StackActions.replace(isHandset ? 'Navigation' : 'DrawerRoot'));
isUnlockingWallets.current = false;
}, [setWalletsInitialized, navigation]);
const unlockWithBiometrics = useCallback(async () => {
if (isUnlockingWallets.current || state.isAuthenticating) return;
isUnlockingWallets.current = true;
dispatch({ type: SET_IS_AUTHENTICATING, payload: true });
if (await Biometric.unlockWithBiometrics()) {
await startAndDecrypt();
successfullyAuthenticated();
}
dispatch({ type: SET_IS_AUTHENTICATING, payload: false });
isUnlockingWallets.current = false;
}, [state.isAuthenticating, startAndDecrypt, successfullyAuthenticated]);
const unlockWithKey = useCallback(async () => {
if (isUnlockingWallets.current || state.isAuthenticating) return;
isUnlockingWallets.current = true;
dispatch({ type: SET_IS_AUTHENTICATING, payload: true });
if (await startAndDecrypt()) {
triggerHapticFeedback(HapticFeedbackTypes.NotificationSuccess);
successfullyAuthenticated();
} else {
dispatch({ type: SET_IS_AUTHENTICATING, payload: false });
isUnlockingWallets.current = false;
}
}, [state.isAuthenticating, startAndDecrypt, successfullyAuthenticated]);
useEffect(() => {
SplashScreen?.dismissSplashScreen();
const startUnlock = async () => {
const storageIsEncrypted = await isStorageEncrypted();
const isBiometricUseCapableAndEnabled = await Biometric.isBiometricUseCapableAndEnabled();
const biometricType = isBiometricUseCapableAndEnabled ? await Biometric.biometricType() : undefined;
if (storageIsEncrypted) {
dispatch({ type: SET_AUTH, payload: { type: AuthType.Encrypted, detail: undefined } });
unlockWithKey();
} else if (isBiometricUseCapableAndEnabled) {
dispatch({ type: SET_AUTH, payload: { type: AuthType.Biometrics, detail: biometricType } });
unlockWithBiometrics();
} else {
dispatch({ type: SET_AUTH, payload: { type: AuthType.None, detail: undefined } });
unlockWithKey();
}
};
startUnlock();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, []);
const renderUnlockOptions = () => {
const color = colorScheme === 'dark' ? '#FFFFFF' : '#000000';
if (state.isAuthenticating) {
return <ActivityIndicator />;
} else {
switch (state.auth.type) {
case AuthType.Biometrics:
if (state.auth.detail === 'TouchID' || state.auth.detail === 'Biometrics') {
return (
<TouchableOpacity accessibilityRole="button" disabled={state.isAuthenticating} onPress={unlockWithBiometrics}>
<Icon name="fingerprint" size={64} type="font-awesome5" color={color} />
</TouchableOpacity>
);
} else if (state.auth.detail === 'FaceID') {
return (
<TouchableOpacity accessibilityRole="button" disabled={state.isAuthenticating} onPress={unlockWithBiometrics}>
<Image
source={colorScheme === 'dark' ? require('./img/faceid-default.png') : require('./img/faceid-dark.png')}
style={styles.icon}
/>
</TouchableOpacity>
);
}
return null;
case AuthType.Encrypted:
return (
<TouchableOpacity accessibilityRole="button" disabled={state.isAuthenticating} onPress={unlockWithKey}>
<Icon name="lock" size={64} type="font-awesome5" color={color} />
</TouchableOpacity>
);
default:
return null;
}
}
};
return (
<SafeArea style={styles.root}>
<View style={styles.container}>
<Image source={require('./img/icon.png')} style={styles.logoImage} resizeMode="contain" />
</View>
<View style={styles.biometricRow}>{renderUnlockOptions()}</View>
</SafeArea>
);
};
const styles = StyleSheet.create({
root: {
flex: 1,
justifyContent: 'space-between',
},
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
},
biometricRow: {
justifyContent: 'center',
flexDirection: 'row',
width: 64,
height: 64,
alignSelf: 'center',
marginBottom: 20,
},
icon: {
width: 64,
height: 64,
},
logoImage: {
width: 100,
height: 75,
alignSelf: 'center',
},
});
export default UnlockWith;