Initial commit

screens/AdminScreen.tsx

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+import React from 'react';
+import { View, Text, Button, StyleSheet } from 'react-native';
+import { signOut } from 'firebase/auth';
+import { auth } from '../config/firebase';
+
+export default function AdminScreen({ navigation }: any) {
+  const handleLogout = async () => {
+    await signOut(auth);
+    navigation.replace('Login');
+  };
+
+  return (
+    <View style={styles.container}>
+      <Text style={styles.title}>Admin Panel</Text>
+      <Text>Csak adminok láthatják ezt a képernyőt</Text>
+      <Button title="Kijelentkezés" onPress={handleLogout} />
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, padding: 16, justifyContent: 'center', alignItems: 'center' },
+  title: { fontSize: 24, fontWeight: 'bold', marginBottom: 16 },
+});

screens/LoginScreen.tsx

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+import React, { useState } from 'react';
+import { View, TextInput, Button, StyleSheet, Text } from 'react-native';
+import { signInWithEmailAndPassword, createUserWithEmailAndPassword } from 'firebase/auth';
+import { doc, setDoc, getDoc } from 'firebase/firestore';
+import { auth, db } from '../config/firebase';
+
+export default function LoginScreen({ navigation }: any) {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [isAdmin, setIsAdmin] = useState(false);
+
+  const handleLogin = async () => {
+    try {
+      const userCredential = await signInWithEmailAndPassword(auth, email, password);
+      const userDoc = await getDoc(doc(db, 'users', userCredential.user.uid));
+      const role = userDoc.data()?.role || 'user';
+      navigation.replace(role === 'admin' ? 'Admin' : 'Profile');
+    } catch (error: any) {
+      alert(error.message);
+    }
+  };
+
+  const handleRegister = async () => {
+    try {
+      const userCredential = await createUserWithEmailAndPassword(auth, email, password);
+      await setDoc(doc(db, 'users', userCredential.user.uid), {
+        email,
+        role: isAdmin ? 'admin' : 'user',
+      });
+      navigation.replace(isAdmin ? 'Admin' : 'Profile');
+    } catch (error: any) {
+      alert(error.message);
+    }
+  };
+
+  return (
+    <View style={styles.container}>
+      <TextInput style={styles.input} placeholder="Email" value={email} onChangeText={setEmail} />
+      <TextInput style={styles.input} placeholder="Jelszó" value={password} onChangeText={setPassword} secureTextEntry />
+      <Button title="Bejelentkezés" onPress={handleLogin} color="#ff00ff" />
+      <Button title="Regisztráció" onPress={handleRegister} color="#ff00ff" />
+      <Text onPress={() => setIsAdmin(!isAdmin)} style={styles.toggle}>
+        {isAdmin ? 'Admin mód' : 'User mód'}
+      </Text>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, padding: 16, justifyContent: 'center', backgroundColor: '#000000' },
+  input: { borderWidth: 1, borderColor: '#333333', padding: 8, marginBottom: 16, borderRadius: 4, backgroundColor: '#1a1a1a', color: '#ffffff' },
+  toggle: { marginTop: 16, textAlign: 'center', color: '#ff00ff' },
+});

screens/ProfileScreen.tsx

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+import React, { useState, useEffect } from 'react';
+import { View, Text, TextInput, Button, StyleSheet } from 'react-native';
+import { signOut } from 'firebase/auth';
+import { doc, getDoc, updateDoc } from 'firebase/firestore';
+import { auth, db } from '../config/firebase';
+
+export default function ProfileScreen({ navigation }: any) {
+  const [name, setName] = useState('');
+
+  useEffect(() => {
+    loadProfile();
+  }, []);
+
+  const loadProfile = async () => {
+    const userDoc = await getDoc(doc(db, 'users', auth.currentUser!.uid));
+    setName(userDoc.data()?.name || '');
+  };
+
+  const handleSave = async () => {
+    await updateDoc(doc(db, 'users', auth.currentUser!.uid), { name });
+    alert('Profil mentve');
+  };
+
+  const handleLogout = async () => {
+    await signOut(auth);
+    navigation.replace('Login');
+  };
+
+  return (
+    <View style={styles.container}>
+      <Text style={styles.title}>Profil</Text>
+      <TextInput style={styles.input} placeholder="Név" value={name} onChangeText={setName} />
+      <Button title="Mentés" onPress={handleSave} />
+      <Button title="Kijelentkezés" onPress={handleLogout} />
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, padding: 16, justifyContent: 'center' },
+  title: { fontSize: 24, fontWeight: 'bold', marginBottom: 16, textAlign: 'center' },
+  input: { borderWidth: 1, padding: 8, marginBottom: 16, borderRadius: 4 },
+});