import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'package:siopas/theme.dart';

import '../models/user_model.dart';
import '../providers/auth_provider.dart';
import '../widget/loading_button.dart';

class SignInPage extends StatefulWidget {
  @override
  State<SignInPage> createState() => _SignInPageState();
}

class _SignInPageState extends State<SignInPage> {
  TextEditingController emailController = TextEditingController(text: '');
  TextEditingController passwordController = TextEditingController(text: '');
  bool isLoading = false;
  bool _isPasswordVisible = false;

  // Create controllers for IP Address and Port
  TextEditingController ipAddressController = TextEditingController();
  TextEditingController portController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    final bool isSmallScreen = MediaQuery.of(context).size.width < 600;
    AuthProvider authProvider = Provider.of<AuthProvider>(context);
    UserModel user = authProvider.user;

    // Function to show the SettingsModal
    void _showSettingsModal(BuildContext context) {
      showDialog(
        context: context,
        builder: (BuildContext context) {
          return SettingsModal();
        },
      );
    }

    return Scaffold(
      body: Center(
        child: isSmallScreen
            ? SingleChildScrollView(
                reverse: true,
                scrollDirection: Axis.vertical, // Tambahkan ini
                child: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: const [
                    _Logo(),
                    _FormContent(),
                  ],
                ),
              )
            : Container(
                padding: const EdgeInsets.all(30.0),
                constraints: const BoxConstraints(maxWidth: 800),
                child: Row(
                  children: [
                    Expanded(child: _Logo()),
                    Expanded(
                      child: Center(child: _FormContent()),
                    ),
                  ],
                ),
              ),
      ),
      bottomNavigationBar: BottomAppBar(
        color: Colors.grey[50],
        elevation: 0,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            TextButton(
              onPressed: () {
                _showSettingsModal(context); // Show the modal
              },
              child: Text('Pengaturan'),
            ),
          ],
        ),
      ),
    );
  }
}

class _Logo extends StatelessWidget {
  const _Logo({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final bool isSmallScreen = MediaQuery.of(context).size.width < 600;

    return Column(
      mainAxisSize: MainAxisSize.min,
      children: [
        Container(
          // margin: EdgeInsets.only(top: 30),
          child: Image.asset(
            'assets/img/siopas_apps.png',
            height: isSmallScreen ? 135 : 200,
          ),
        ),
        Padding(
          padding: const EdgeInsets.all(16.0),
          child: Column(
            children: [
              Text(
                "Siopas ISTW",
                textAlign: TextAlign.center,
                style: TextStyle(
                  fontSize: isSmallScreen ? 18 : 22,
                  fontWeight: semiBold,
                  color: Colors.black,
                ),
              ),
              SizedBox(
                  height:
                      8.0), // Berikan sedikit jarak antara teks "Siopas ISTW" dan versi
              Text(
                "Version 1.0.0", // Gantilah dengan versi aktual
                textAlign: TextAlign.center,
                style: TextStyle(
                  fontSize: isSmallScreen ? 14 : 16,
                  color: Colors.grey,
                ),
              ),
            ],
          ),
        ),
      ],
    );
  }
}

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

  @override
  State<_FormContent> createState() => __FormContentState();
}

class __FormContentState extends State<_FormContent> {
  TextEditingController emailController = TextEditingController(text: '');
  TextEditingController passwordController = TextEditingController(text: '');
  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();

  bool isLoading = false;

  bool _isPasswordVisible = false;

  @override
  Widget build(BuildContext context) {
    AuthProvider authProvider = Provider.of<AuthProvider>(context);
    UserModel user = authProvider.user;

    handleSignIn() async {
      setState(() {
        isLoading = true;
      });

      if (await authProvider.login(
        email: emailController.text,
        password: passwordController.text,
      )) {
        UserModel user = authProvider.user;
        // Simpan token pengguna ke SharedPreferences
        SharedPreferences prefs = await SharedPreferences.getInstance();
        prefs.setString('token', user.token!); // Pastikan user.token tidak null
        print('token dapat login: ${user.token}');

        if (user != null) {
          String roleName = user.role!.name!.toLowerCase();
          if (roleName == 'operator' || roleName == 'Operator') {
            print('Berhasil login HALAMAN USER');
            if (context != null) {
              Navigator.pushReplacementNamed(context, '/home');
            } else {
              print('Context is null');
            }
          } else {
            print('Tidak ada informasi peran (roles) yang tersedia');
          }
        } else {
          print('User tidak valid');
        }
      } else {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            backgroundColor: alertColor,
            content: Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Icon(
                  Icons.warning,
                  color: Colors.white,
                ),
                SizedBox(width: 8), // Jarak antara ikon dan teks
                Text(
                  'Gagal Login, Email dan Password anda salah',
                  textAlign: TextAlign.center,
                ),
              ],
            ),
          ),
        );
        Future.delayed(Duration(seconds: 3), () {
          ScaffoldMessenger.of(context).hideCurrentSnackBar();
        });
      }

      setState(() {
        isLoading = false;
      });
    }

    return Container(
      constraints: const BoxConstraints(maxWidth: 300),
      child: Form(
        key: _formKey,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          // mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            _gap(),
            TextFormField(
              validator: (value) {
                // add email validation
                if (value == null || value.isEmpty) {
                  return 'Silakan masukkan email anda';
                }

                bool emailValid = RegExp(
                        r"^[a-zA-Z0-9.a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]+@[a-zA-Z0-9]+\.[a-zA-Z]+")
                    .hasMatch(value);
                if (!emailValid) {
                  return 'Tolong masukkan email yang benar';
                }

                return null;
              },
              controller: emailController,
              decoration: const InputDecoration(
                hintText: 'Masukkan email Anda',
                prefixIcon: Icon(Icons.email_outlined),
                border: OutlineInputBorder(),
              ),
              keyboardType: TextInputType.emailAddress,
            ),
            _gap(),
            TextFormField(
              validator: (value) {
                if (value == null || value.isEmpty) {
                  return 'Silakan masukkan password anda';
                }

                if (value.length < 6) {
                  return 'Kata sandi minimal harus 6 karakter';
                }
                return null;
              },
              obscureText: !_isPasswordVisible,
              controller: passwordController,
              decoration: InputDecoration(
                  hintText: 'Masukkan kata sandi Anda',
                  prefixIcon: const Icon(Icons.lock_outline_rounded),
                  border: const OutlineInputBorder(),
                  suffixIcon: IconButton(
                    icon: Icon(_isPasswordVisible
                        ? Icons.visibility_off
                        : Icons.visibility),
                    onPressed: () {
                      setState(() {
                        _isPasswordVisible = !_isPasswordVisible;
                      });
                    },
                  )),
            ),
            _gap(),
            SizedBox(
              width: double.infinity,
              child: ElevatedButton(
                style: ElevatedButton.styleFrom(
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(4),
                  ),
                  primary: Colors.indigo, // Ganti warna tombol menjadi indigo
                  alignment: Alignment.center, // Menyusun isi tombol ke tengah
                ),
                child: Padding(
                  padding: const EdgeInsets.all(10.0),
                  child: Row(
                    mainAxisAlignment:
                        MainAxisAlignment.center, // Tengahkan teks 'Login'
                    children: [
                      Icon(Icons.login),
                      SizedBox(
                          width:
                              8.0), // Berikan sedikit jarak antara ikon dan teks
                      Text(
                        'Masuk',
                        style: TextStyle(
                            fontSize: 16, fontWeight: FontWeight.bold),
                      ),
                    ],
                  ),
                ),
                onPressed: () {
                  if (_formKey.currentState!.validate()) {
                    if (emailController.text.isEmpty ||
                        passwordController.text.isEmpty) {
                      ScaffoldMessenger.of(context).showSnackBar(
                        SnackBar(
                          backgroundColor: alertColor,
                          content: Row(
                            children: [
                              Icon(
                                Icons.warning,
                                color: Colors.white,
                              ),
                              SizedBox(width: 8), // Jarak antara ikon dan teks
                              Text(
                                'Email dan Password tidak boleh kosong',
                                textAlign: TextAlign.center,
                              ),
                            ],
                          ),
                        ),
                      );

                      Future.delayed(Duration(seconds: 2), () {
                        ScaffoldMessenger.of(context).hideCurrentSnackBar();
                      });
                    } else {
                      handleSignIn();
                    }
                  }
                },
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _gap() => const SizedBox(height: 14);
}

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

  @override
  State<SettingsModal> createState() => _SettingsModalState();
}

class _SettingsModalState extends State<SettingsModal> {
  TextEditingController ipAddressController = TextEditingController();
  TextEditingController portController = TextEditingController();

  @override
  void initState() {
    super.initState();
    // Load saved IP Address and Port when the modal is initialized
    loadSettings();
  }

  void loadSettings() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    String ipAddress = prefs.getString('ipAddress') ?? '';
    String port = prefs.getString('port') ?? '';

    setState(() {
      ipAddressController.text = ipAddress;
      portController.text = port;
    });
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Text('Pengaturan'),
          GestureDetector(
            onTap: () {
              Navigator.of(context).pop(); // Close the modal
            },
            child: Icon(Icons.close),
          ),
        ],
      ),
      content: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          TextFormField(
            controller: ipAddressController,
            keyboardType: TextInputType.number, // Set numeric keyboard
            decoration: InputDecoration(labelText: 'IP Address'),
          ),
          SizedBox(height: 16),
          TextFormField(
            controller: portController,
            keyboardType: TextInputType.number, // Set numeric keyboard
            decoration: InputDecoration(labelText: 'Port'),
          ),
        ],
      ),
      actions: [
        ElevatedButton(
          onPressed: () {
            // Save IP Address and Port to SharedPreferences
            saveSettings(ipAddressController.text, portController.text);
            Navigator.of(context).pop(); // Close the modal
          },
          child: Text('Simpan'),
        ),
      ],
    );
  }

  void saveSettings(String ipAddress, String port) async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    prefs.setString('ipAddress', ipAddress);
    prefs.setString('port', port);

    // Print the saved data
    print('IP Address saved: $ipAddress');
    print('Port saved: $port');
  }

  // Function to clear the IP Address and Port in SharedPreferences
  void clearSettings() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    prefs.remove('ipAddress');
    prefs.remove('port');
    print('IP Address and Port cleared');
  }
}