[UI-01] Login Screen (retry 1)

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  "model": "claude-sonnet-4-20250514",
  "status": "success",
  "transport": "anthropic_api",
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  "response_text": "I'll create the LoginScreen component file to satisfy the failing test.\n\n```tsx\n// src/screens/LoginScreen.tsx\n// EN: Login screen component for user authentication\n// VI: Component màn hình đăng nhập cho xác thực người dùng\n// ES: Componente de pantalla de inicio de sesión para autenticación de usuario\n// SPEC: UI-01 - Login Screen implementation\n\nimport React, { useState } from 'react';\nimport { View, Text, TextInput, TouchableOpacity, StyleSheet, Alert } from 'react-native';\nimport { z } from 'zod';\n\n// EN: Login form validation schema\n// VI: Schema xác thực form đăng nhập\n// ES: Esquema de validación del formulario de inicio de sesión\nconst loginSchema = z.object({\n  email: z.string().email('Invalid email format'),\n  password: z.string().min(6, 'Password must be at least 6 characters'),\n});\n\ntype LoginFormData = z.infer<typeof loginSchema>;\n\ninterface LoginScreenProps {\n  onLogin?: (email: string, password: string) => Promise<void>;\n  onNavigateToRegister?: () => void;\n  onForgotPassword?: () => void;\n}\n\nconst LoginScreen: React.FC<LoginScreenProps> = ({\n  onLogin,\n  onNavigateToRegister,\n  onForgotPassword,\n}) => {\n  const [email, setEmail] = useState('');\n  const [password, setPassword] = useState('');\n  const [loading, setLoading] = useState(false);\n\n  // EN: Handle login form submission\n  // VI: Xử lý gửi form đăng nhập\n  // ES: Manejar el envío del formulario de inicio de sesión\n  const handleLogin = async () => {\n    const formData: LoginFormData = { email, password };\n    const validation = loginSchema.safeParse(formData);\n\n    if (!validation.success) {\n      const errorMessage = validation.error.errors[0]?.message || 'Validation failed';\n      Alert.alert('Error', errorMessage);\n      return;\n    }\n\n    setLoading(true);\n    try {\n      if (onLogin) {\n        await onLogin(email, password);\n      }\n    } catch (error) {\n      Alert.alert('Login Failed', 'Please check your credentials and try again.');\n    } finally {\n      setLoading(false);\n    }\n  };\n\n  return (\n    <View style={styles.container}>\n      <Text style={styles.title}>Login</Text>\n      \n      <TextInput\n        style={styles.input}\n        placeholder=\"Email\"\n        value={email}\n        onChangeText={setEmail}\n        keyboardType=\"email-address\"\n        autoCapitalize=\"none\"\n        autoCorrect={false}\n      />\n      \n      <TextInput\n        style={styles.input}\n        placeholder=\"Password\"\n        value={password}\n        onChangeText={setPassword}\n        secureTextEntry\n        autoCapitalize=\"none\"\n      />\n      \n      <TouchableOpacity\n        style={[styles.button, loading && styles.buttonDisabled]}\n        onPress={handleLogin}\n        disabled={loading}\n      >\n        <Text style={styles.buttonText}>\n          {loading ? 'Logging in...' : 'Login'}\n        </Text>\n      </TouchableOpacity>\n      \n      <TouchableOpacity\n        style={styles.linkButton}\n        onPress={onForgotPassword}\n      >\n        <Text style={styles.linkText}>Forgot Password?</Text>\n      </TouchableOpacity>\n      \n      <TouchableOpacity\n        style={styles.linkButton}\n        onPress={onNavigateToRegister}\n      >\n        <Text style={styles.linkText}>Don't have an account? Sign up</Text>\n      </TouchableOpacity>\n    </View>\n  );\n};\n\nconst styles = StyleSheet.create({\n  container: {\n    flex: 1,\n    justifyContent: 'center',\n    alignItems: 'center',\n    padding: 20,\n    backgroundColor: '#fff',\n  },\n  title: {\n    fontSize: 32,\n    fontWeight: 'bold',\n    marginBottom: 40,\n    color: '#333',\n  },\n  input: {\n    width: '100%',\n    height: 50,\n    borderWidth: 1,\n    borderColor: '#ddd',\n    borderRadius: 8,\n    paddingHorizontal: 15,\n    marginBottom: 15,\n    fontSize: 16,\n  },\n  button: {\n    width: '100%',\n    height: 50,\n    backgroundColor: '#007AFF',\n    justifyContent: 'center',\n    alignItems: 'center',\n    borderRadius: 8,\n    marginTop: 10,\n  },\n  buttonDisabled: {\n    backgroundColor: '#999',\n  },\n  buttonText: {\n    color: '#fff',\n    fontSize: 18,\n    fontWeight: '600',\n  },\n  linkButton: {\n    marginTop: 15,\n  },\n  linkText: {\n    color: '#007AFF',\n    fontSize: 16,\n  },\n});\n\nexport default LoginScreen;\n```\n\nThis LoginScreen component includes:\n\n1. **File Creation**: Creates the required `src/screens/LoginScreen.tsx` file to pass the failing test\n2. **Trilingual Comments**: Following the convention with EN/VI/ES comments\n3. **SPEC Reference**: References UI-01 in the header comment\n4. **Zod Validation**: Uses Zod schema with `.safeParse()` for form validation\n5. **React Native Components**: Proper UI components for email/password input\n6. **Error Handling**: Displays validation errors and login failures\n7. **Loading States**: Shows loading state during authentication\n8. **Navigation Props**: Accepts optional handlers for navigation to register/forgot password\n9. **Styling**: Clean, modern styling with proper spacing and colors\n\nThe component is flexible and can be integrated with different authentication providers (like Supabase) through the `onLogin` prop callback."
}