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January 22, 2022 08:00
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login.js - snapchat
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| import React, { useState, useContext, useEffect } from 'react'; | |
| import { CometChat } from '@cometchat-pro/react-native-chat'; | |
| import { | |
| ActivityIndicator, | |
| Alert, | |
| StyleSheet, | |
| Text, | |
| TextInput, | |
| TouchableOpacity, | |
| View, | |
| } from 'react-native'; | |
| import AsyncStorage from '@react-native-async-storage/async-storage'; | |
| import validator from "validator"; | |
| import Context from "../../context"; | |
| import { cometChatConfig } from '../../env'; | |
| import { | |
| auth, | |
| signInWithEmailAndPassword, | |
| } from "../../firebase"; | |
| import { getFirebaseData } from '../../services/common'; | |
| const Login = props => { | |
| const { navigation } = props; | |
| const { setUser } = useContext(Context); | |
| const [email, setEmail] = useState(''); | |
| const [password, setPassword] = useState(''); | |
| const [isLoading, setIsLoading] = useState(false); | |
| useEffect(() => { | |
| return () => { | |
| setIsLoading(false); | |
| } | |
| }, []); | |
| const onEmailChanged = email => { | |
| setEmail(() => email); | |
| }; | |
| const onPasswordChanged = password => { | |
| setPassword(() => password); | |
| }; | |
| const login = async () => { | |
| if (isUserCredentialsValid(email, password)) { | |
| setIsLoading(true); | |
| try { | |
| const userCredential = await signInWithEmailAndPassword(auth, email, password); | |
| if (!userCredential) return; | |
| const userId = userCredential.user.uid; | |
| await loginCometChat(userId); | |
| } catch (error) { | |
| setIsLoading(false); | |
| showMessage('Error', 'Your username or password is not correct'); | |
| } | |
| } else { | |
| setIsLoading(false); | |
| showMessage('Error', 'Your username or password is not correct'); | |
| } | |
| }; | |
| const isUserCredentialsValid = (email, password) => { | |
| return validator.isEmail(email) && password; | |
| }; | |
| const loginCometChat = async id => { | |
| if (!id) return; | |
| try { | |
| const user = await CometChat.login(id, `${cometChatConfig.cometChatAuthKey}`); | |
| if (user) { | |
| const authenticatedUser = await getUser(id); | |
| if (authenticatedUser) { | |
| setIsLoading(false); | |
| setUser(authenticatedUser); | |
| saveAuthedInfo(authenticatedUser); | |
| navigate('Home'); | |
| } else { | |
| setIsLoading(false); | |
| showMessage('Info', 'Cannot load the authenticated information, please try again'); | |
| } | |
| } else { | |
| setIsLoading(false); | |
| showMessage('Error', 'Your username or password is not correct'); | |
| } | |
| } catch (error) { | |
| setIsLoading(false); | |
| showMessage('Error', 'Your username or password is not correct'); | |
| } | |
| }; | |
| const getUser = async id => { | |
| if (!id) { | |
| return null; | |
| } | |
| return await getFirebaseData({ key: 'users/', id }); | |
| }; | |
| const saveAuthedInfo = authenticatedUser => { | |
| AsyncStorage.setItem('auth', JSON.stringify(authenticatedUser)); | |
| }; | |
| const showMessage = (title, message) => { | |
| Alert.alert(title, message); | |
| }; | |
| const register = route => () => { | |
| navigate(route); | |
| }; | |
| const navigate = route => { | |
| navigation.navigate(route); | |
| }; | |
| if (isLoading) { | |
| return ( | |
| <View style={styles.container}> | |
| <ActivityIndicator size="large" color="#3B82F6" /> | |
| </View> | |
| ); | |
| } | |
| return ( | |
| <View style={styles.container}> | |
| <View style={styles.logoContainer}> | |
| <Text style={styles.logoTitle}>Snapchat</Text> | |
| </View> | |
| <TextInput | |
| autoCapitalize='none' | |
| onChangeText={onEmailChanged} | |
| placeholder="Email" | |
| placeholderTextColor="#ccc" | |
| style={styles.input} | |
| /> | |
| <TextInput | |
| autoCapitalize='none' | |
| onChangeText={onPasswordChanged} | |
| placeholder="Password" | |
| placeholderTextColor="#ccc" | |
| secureTextEntry | |
| style={styles.input} | |
| /> | |
| <TouchableOpacity style={styles.loginBtn} onPress={login}> | |
| <Text style={styles.loginLabel}>Login</Text> | |
| </TouchableOpacity> | |
| <TouchableOpacity style={styles.registerBtn} onPress={register('SignUp')}> | |
| <Text style={styles.registerLabel}>Register</Text> | |
| </TouchableOpacity> | |
| </View> | |
| ); | |
| }; | |
| const styles = StyleSheet.create({ | |
| container: { | |
| backgroundColor: '#fff', | |
| flex: 1, | |
| flexDirection: 'column', | |
| justifyContent: 'center' | |
| }, | |
| logoContainer: { | |
| display: 'flex', | |
| flexDirection: 'row', | |
| justifyContent: 'center' | |
| }, | |
| logoTitle: { | |
| fontSize: 32, | |
| fontWeight: 'bold' | |
| }, | |
| input: { | |
| borderColor: '#ccc', | |
| borderRadius: 8, | |
| borderWidth: 1, | |
| fontSize: 16, | |
| marginHorizontal: 24, | |
| marginVertical: 8, | |
| padding: 12, | |
| }, | |
| loginBtn: { | |
| backgroundColor: '#FFFC00', | |
| borderRadius: 8, | |
| fontSize: 16, | |
| marginHorizontal: 24, | |
| marginVertical: 8, | |
| padding: 16, | |
| }, | |
| loginLabel: { | |
| color: '#000', | |
| fontWeight: 'bold', | |
| textAlign: 'center', | |
| textTransform: 'uppercase', | |
| }, | |
| registerBtn: { | |
| backgroundColor: '#fff', | |
| fontSize: 16, | |
| marginHorizontal: 24, | |
| marginVertical: 4, | |
| padding: 8, | |
| }, | |
| registerLabel: { | |
| color: '#000', | |
| fontWeight: 'bold', | |
| textAlign: 'center', | |
| textTransform: 'uppercase' | |
| } | |
| }); | |
| export default Login; |
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