import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:marco/controller/my_controller.dart';
import 'package:marco/helpers/services/auth_service.dart';
import 'package:marco/helpers/widgets/my_form_validator.dart';
import 'package:marco/helpers/widgets/my_validators.dart';
import 'package:marco/helpers/widgets/my_snackbar.dart';
import 'package:shared_preferences/shared_preferences.dart';

class LoginController extends MyController {
  final MyFormValidator basicValidator = MyFormValidator();

  final RxBool isLoading = false.obs;
  final RxBool showPassword = false.obs;
  final RxBool isChecked = false.obs;

  @override
  void onInit() {
    super.onInit();
    _initializeForm();
    _loadSavedCredentials();
  }

  void _initializeForm() {
    basicValidator.addField(
      'username',
      required: true,
      label: "User_Name",
      validators: [MyEmailValidator()],
      controller: TextEditingController(),
    );

    basicValidator.addField(
      'password',
      required: true,
      label: "Password",
      validators: [MyLengthValidator(min: 6, max: 10)],
      controller: TextEditingController(),
    );
  }

  void onChangeCheckBox(bool? value) {
    isChecked.value = value ?? isChecked.value;
  }

  void onChangeShowPassword() {
    showPassword.toggle();
  }

  Future<void> onLogin() async {
    if (!basicValidator.validateForm()) return;

    isLoading.value = true;

    final errors = await AuthService.loginUser(basicValidator.getData());

    if (errors != null) {
      showAppSnackbar(
        title: "Login Failed",
        message: "Username or password is incorrect",
        type: SnackbarType.error,
      );

      basicValidator.addErrors(errors);
      basicValidator.validateForm();
      basicValidator.clearErrors();
    } else {
      await _handleRememberMe();

      final currentRoute = ModalRoute.of(Get.context!)?.settings.name ?? "";
      final nextUrl = Uri.parse(currentRoute).queryParameters['next'] ?? "/home";
      Get.toNamed(nextUrl);
    }

    isLoading.value = false;
  }

  Future<void> _handleRememberMe() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    if (isChecked.value) {
      await prefs.setString('username', basicValidator.getController('username')!.text);
      await prefs.setString('password', basicValidator.getController('password')!.text);
      await prefs.setBool('remember_me', true);
    } else {
      await prefs.remove('username');
      await prefs.remove('password');
      await prefs.setBool('remember_me', false);
    }
  }

  Future<void> _loadSavedCredentials() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    final savedUsername = prefs.getString('username');
    final savedPassword = prefs.getString('password');
    final remember = prefs.getBool('remember_me') ?? false;

    isChecked.value = remember;

    if (remember) {
      basicValidator.getController('username')?.text = savedUsername ?? '';
      basicValidator.getController('password')?.text = savedPassword ?? '';
    }
  }

  void goToForgotPassword() {
    Get.toNamed('/auth/forgot_password');
  }

  void gotoRegister() {
    Get.offAndToNamed('/auth/register_account');
  }
}