Initial commit

screens/LoginScreen.tsx

@@ -0,0 +1,53 @@
+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' },
+});