import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/material.dart';
import 'package:tugasakhir/screens/home.dart'; // Pastikan HomeScreen di-import untuk memanggil _fetchUsers

class RegisterScreen extends StatefulWidget {
  const RegisterScreen({Key? key}) : super(key: key);

  @override
  _RegisterScreenState createState() => _RegisterScreenState();
}

class _RegisterScreenState extends State<RegisterScreen> {
  final TextEditingController _nameController = TextEditingController();
  final TextEditingController _ageController = TextEditingController(); // Controller for age

  // Function to add new user to Firestore
  void addUser() async {
    if (_nameController.text.isNotEmpty && _ageController.text.isNotEmpty) {
      try {
        // Convert age to an integer
        int age = int.parse(_ageController.text);

        // Add user data to Firestore
        await FirebaseFirestore.instance.collection('users').add({
          'nama': _nameController.text,
          'umur': age,
        });

        // Reload the users data to reflect the new user in the dropdown
        Navigator.pop(context);
        // Use Navigator.pop() to close this screen and go back to HomeScreen
        // After returning, the HomeScreen will reload the list of users by calling _fetchUsers()

      } catch (e) {
        print("Gagal Menambahkan Pengguna: $e");
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(content: Text('Gagal Menambahkan Pengguna')),
        );
      }
    } else {
      // Show a message if the name or age is empty
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Masukan Data dengan benar')),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: const Color(0xFF59A4EB),
        title: const Text('Pendaftaran'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          children: [
            const Text(
              'Masukan Data Pengguna Baru:',
              style: TextStyle(fontSize: 18),
            ),
            const SizedBox(height: 16),
            // Input field for the user's name
            TextField(
              controller: _nameController,
              decoration: const InputDecoration(labelText: 'Nama'),
            ),
            const SizedBox(height: 16),
            // Input field for the user's age
            TextField(
              controller: _ageController,
              keyboardType: TextInputType.number, // To allow only numeric input
              decoration: const InputDecoration(labelText: 'Umur'),
            ),
            const SizedBox(height: 24),
            ElevatedButton(
              onPressed: addUser,
              child: const Text('Tambahkan'),
              style: ElevatedButton.styleFrom(
                backgroundColor: const Color(0xFF59A4EB), // Blue button color
                padding: const EdgeInsets.symmetric(vertical: 15, horizontal: 30),
              ),
            ),
          ],
        ),
      ),
    );
  }
}