I'll create a React Native (Expo) implementation for the EduFace CRM mobile app. Let's start with the core structure and key screens. import React from 'react'; import { NavigationContainer } from '@react-navigation/native'; import { createNativeStackNavigator } from '@react-navigation/native-stack'; import { StatusBar } from 'expo-status-bar'; import { useColorScheme } from 'react-native'; import { ThemeProvider } from 'styled-components'; import { lightTheme, darkTheme } from './src/themes'; import AuthScreen from './src/screens/AuthScreen'; import DashboardScreen from './src/screens/DashboardScreen'; import AttendanceScreen from './src/screens/AttendanceScreen'; import ScheduleScreen from './src/screens/ScheduleScreen'; import AnalyticsScreen from './src/screens/AnalyticsScreen'; import ChatScreen from './src/screens/ChatScreen'; import SettingsScreen from './src/screens/SettingsScreen'; const Stack = createNativeStackNavigator(); export default function App() { const scheme = useColorScheme(); return ( ); } export const lightTheme = { colors: { primary: '#007BFF', background: '#FFFFFF', text: '#1C2526', card: '#F8F9FA', border: '#E9ECEF', success: '#28A745', danger: '#DC3545', warning: '#FFC107', info: '#17A2B8', }, fonts: { regular: 'Roboto-Regular', medium: 'Roboto-Medium', bold: 'Roboto-Bold', }, }; export const darkTheme = { colors: { primary: '#007BFF', background: '#1C2526', text: '#FFFFFF', card: '#2C3E50', border: '#34495E', success: '#28A745', danger: '#DC3545', warning: '#FFC107', info: '#17A2B8', }, fonts: { regular: 'Roboto-Regular', medium: 'Roboto-Medium', bold: 'Roboto-Bold', }, }; import React, { useState } from 'react'; import { View, Text, TextInput, TouchableOpacity, StyleSheet, Image } from 'react-native'; import { useTheme } from 'styled-components'; import * as LocalAuthentication from 'expo-local-authentication'; import i18n from '../i18n'; const AuthScreen = ({ navigation }) => { const theme = useTheme(); const [email, setEmail] = useState(''); const [password, setPassword] = useState(''); const [showPassword, setShowPassword] = useState(false); const [language, setLanguage] = useState('en'); const [gdprConsent, setGdprConsent] = useState(false); const handleFaceIdLogin = async () => { const hasHardware = await LocalAuthentication.hasHardwareAsync(); const isEnrolled = await LocalAuthentication.isEnrolledAsync(); if (hasHardware && isEnrolled) { const result = await LocalAuthentication.authenticateAsync({ promptMessage: i18n.t('auth.faceIdPrompt'), }); if (result.success) { navigation.navigate('Dashboard'); } } }; const handleLogin = () => { if (email && password && gdprConsent) { navigation.navigate('Dashboard'); } }; return ( {i18n.t('auth.faceIdButton')} {i18n.t('auth.or')} setShowPassword(!showPassword)}> {showPassword ? i18n.t('auth.hide') : i18n.t('auth.show')} setGdprConsent(!gdprConsent)}> {i18n.t('auth.gdprConsent')} {i18n.t('auth.loginButton')} {i18n.t('auth.forgotPassword')} ); }; const styles = StyleSheet.create({ container: { flex: 1, justifyContent: 'center', padding: 20, }, logo: { width: 150, height: 150, alignSelf: 'center', marginBottom: 30, }, faceIdButton: { padding: 15, borderRadius: 8, alignItems: 'center', marginBottom: 20, }, orText: { textAlign: 'center', marginVertical: 20, }, input: { height: 50, borderWidth: 1, borderRadius: 8, paddingHorizontal: 15, marginBottom: 15, }, passwordContainer: { flexDirection: 'row', alignItems: 'center', height: 50, borderWidth: 1, borderRadius: 8, paddingHorizontal: 15, marginBottom: 15, }, passwordInput: { flex: 1, }, gdprContainer: { flexDirection: 'row', alignItems: 'center', marginBottom: 20, }, checkbox: { width: 20, height: 20, borderWidth: 1, borderRadius: 4, marginRight: 10, }, gdprText: { flex: 1, }, loginButton: { padding: 15, borderRadius: 8, alignItems: 'center', marginBottom: 15, }, buttonText: { fontWeight: 'bold', }, forgotPassword: { textAlign: 'center', }, }); export default AuthScreen; import React from 'react'; import { View, Text, TouchableOpacity, StyleSheet, ScrollView } from 'react-native'; import { useTheme } from 'styled-components'; import { useNavigation } from '@react-navigation/native'; import i18n from '../i18n'; const DashboardScreen = () => { const theme = useTheme(); const navigation = useNavigation(); const userRole = 'student'; // This would come from auth context return ( {i18n.t('dashboard.welcome', { name: 'John' })} {userRole === 'student' && ( {i18n.t('dashboard.attendance')} {i18n.t('dashboard.attendancePercentage', { percentage: 85 })} )} {i18n.t('dashboard.schedule')} navigation.navigate('Schedule')} > {i18n.t('dashboard.nextClass', { time: '10:00', subject: 'Mathematics' })} {userRole === 'teacher' && ( {i18n.t('dashboard.groups')} navigation.navigate('Attendance')} > {i18n.t('dashboard.markAttendance')} )} {userRole === 'admin' && ( {i18n.t('dashboard.statistics')} {i18n.t('dashboard.totalStudents', { count: 120 })} {i18n.t('dashboard.totalTeachers', { count: 15 })} )} ); }; const styles = StyleSheet.create({ container: { flex: 1, padding: 20, }, welcomeText: { fontSize: 24, fontWeight: 'bold', marginBottom: 30, }, section: { marginBottom: 25, }, sectionTitle: { fontSize: 18, fontWeight: 'bold', marginBottom: 10, }, card: { borderRadius: 8, padding: 15, shadowColor: '#000', shadowOffset: { width: 0, height: 2 }, shadowOpacity: 0.1, shadowRadius: 4, elevation: 2, }, cardText: { fontSize: 16, }, }); export default DashboardScreen; import i18n from 'i18next'; import { initReactI18next } from 'react-i18next'; // English translations const en = { auth: { faceIdButton: 'Login with Face ID', or: 'OR', emailPlaceholder: 'Email', passwordPlaceholder: 'Password', show: 'Show', hide: 'Hide', gdprConsent: 'I agree to the processing of my biometric data', loginButton: 'Login', forgotPassword: 'Forgot password?', faceIdPrompt: 'Authenticate to login', }, dashboard: { welcome: 'Welcome, {name}!', attendance: 'Attendance', attendancePercentage: 'Your attendance: {percentage}%', schedule: 'Schedule', nextClass: 'Next class at {time}: {subject}', groups: 'Your Groups', markAttendance: 'Mark Attendance', statistics: 'Statistics', totalStudents: 'Total Students: {count}', totalTeachers: 'Total Teachers: {count}', }, }; // Russian translations const ru = { auth: { faceIdButton: 'Войти через Face ID', or: 'ИЛИ', emailPlaceholder: 'Email', passwordPlaceholder: 'Пароль', show: 'Показать', hide: 'Скрыть', gdprConsent: 'Я согласен на обработку биометрических данных', loginButton: 'Войти', forgotPassword: 'Забыли пароль?', faceIdPrompt: 'Аутентификация для входа', }, dashboard: { welcome: 'Добро пожаловать, {name}!', attendance: 'Посещаемость', attendancePercentage: 'Ваша посещаемость: {percentage}%', schedule: 'Расписание', nextClass: 'Следующее занятие в {time}: {subject}', groups: 'Ваши группы', markAttendance: 'Отметить посещаемость', statistics: 'Статистика', totalStudents: 'Всего студентов: {count}', totalTeachers: 'Всего преподавателей: {count}', }, }; i18n .use(initReactI18next) .init({ resources: { en: { translation: en }, ru: { translation: ru }, }, lng: 'en', fallbackLng: 'en', interpolation: { escapeValue: false, }, }); export default i18n; { "name": "eduface-crm", "version": "1.0.0", "main": "node_modules/expo/AppEntry.js", "scripts": { "start": "expo start", "android": "expo start --android", "ios": "expo start --ios", "web": "expo start --web" }, "dependencies": { "@react-navigation/native": "^6.1.7", "@react-navigation/native-stack": "^6.9.12", "expo": "~48.0.18", "expo-local-authentication": "~13.5.0", "i18next": "^23.7.8", "react": "18.2.0", "react-native": "0.71.8", "react-native-gesture-handler": "~2.9.0", "react-native-reanimated": "~2.14.4", "react-native-safe-area-context": "4.5.0", "react-native-screens": "~3.20.0", "react-native-web": "~0.18.10", "react-i18next": "^13.5.0", "styled-components": "^6.0.8" }, "devDependencies": { "@babel/core": "^7.20.0" }, "private": true } This is the initial setup with: 1. Core navigation structure 2. Authentication screen with Face ID support 3. Dashboard screen with role-based content 4. Internationalization setup 5. Light/dark theme support 6. Basic styling and components To run the app: 1. Install dependencies: `npm install` 2. Start the development server: `npm start` 3. Open in iOS/Android simulator or on a physical device