import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import 'package:niogu_app/core/constants/app_asset.dart';
import 'package:niogu_app/core/constants/app_color.dart';
import 'package:niogu_app/core/constants/app_font_size.dart';
import 'package:niogu_app/core/errors/exceptions.dart';
import 'package:niogu_app/core/providers/app_provider.dart';
import 'package:niogu_app/core/router/app_route.dart';
import 'package:niogu_app/core/utils/log_message.dart';
import 'package:niogu_app/core/system/system_setting.dart';
import 'package:niogu_app/core/widgets/custom_snackbar.dart';
import 'package:niogu_app/core/widgets/custom_text_form_field.dart';
import 'package:niogu_app/features/auth/domain/entities/user.dart';
import 'package:niogu_app/features/auth/presentation/providers/auth_provider.dart';
import 'package:sizer/sizer.dart';

class RegistrationScreen extends ConsumerStatefulWidget {
  const RegistrationScreen({super.key});

  @override
  ConsumerState<RegistrationScreen> createState() => _RegistrationScreenState();
}

class _RegistrationScreenState extends ConsumerState<RegistrationScreen> {
  final _formKey = GlobalKey<FormState>();

  final _businessNameController = TextEditingController();

  final _nameController = TextEditingController();

  final _phoneNumberController = TextEditingController();

  final _emailController = TextEditingController();

  final _passwordController = TextEditingController();

  final _passwordConfirmController = TextEditingController();

  bool _obscurePassword = true;

  bool _obscurePasswordConfirm = true;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
  }

  @override
  void dispose() {
    // TODO: implement dispose
    _businessNameController.dispose();
    _nameController.dispose();
    _phoneNumberController.dispose();
    _emailController.dispose();
    _passwordController.dispose();
    _passwordConfirmController.dispose();
    super.dispose();
  }

  String? _validation({
    String? value,
    String? message,
    bool isEmail = false,
    bool isPassword = false,
    bool isPasswordConfirm = false,
  }) {
    if (value == null || value.isEmpty) {
      return message;
    }

    final _emailRegex = RegExp(
      r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$',
    );

    if (isEmail && !_emailRegex.hasMatch(value)) {
      return "Email tidak valid";
    }

    if (isPassword) {
      if (value.length < 8) {
        return "Password minimal harus 8 karakter";
      }

      final passwordRegExp = RegExp(
        r'^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&#])[A-Za-z\d@$!%*?&#]{8,}$',
      );

      if (!passwordRegExp.hasMatch(value)) {
        return "Gunakan huruf besar, kecil, angka, dan simbol";
      }
    }

    if (isPasswordConfirm && value != _passwordController.text.trim()) {
      return "Konfirmasi password tidak sesuai";
    }

    return null;
  }

  Future<void> _setCurrentOutlet() async {
    final currentOutletId = await SystemSetting.getCurrentOutletId();

    final currentOutletName = await SystemSetting.getCurrentOutletName();

    ref.read(currentOutletIdProvider.notifier).state = currentOutletId;

    ref.read(currentOutletNameProvider.notifier).state = currentOutletName;
  }

  Future<void> _setCurrentUser() async {
    final currentUserId = await SystemSetting.getCurrentUserId();

    final currentUserName = await SystemSetting.getCurrentUserName();

    final currentUserEmail = await SystemSetting.getCurrentUserEmail();

    final currentUserRole = await SystemSetting.getCurrentUserRole();

    final outletIdByOwner = await SystemSetting.getOutletIdByOwner();

    ref.read(currentUserIdProvider.notifier).state = currentUserId;

    ref.read(currentUserNameProvider.notifier).state = currentUserName;

    ref.read(currentUserEmailProvider.notifier).state = currentUserEmail;

    ref.read(currentUserRoleProvider.notifier).state = currentUserRole;

    ref.read(outletIdByOwnerProvider.notifier).state = outletIdByOwner;

    ref.read(currentStatusLoginProvider.notifier).state = true;
  }

  Future<void> _register() async {
    if (!_formKey.currentState!.validate()) return;

    try {
      await ref
          .read(authControllerProvider.notifier)
          .register(
            RegisterUser(
              businessName: _businessNameController.text.trim(),
              ownerName: _nameController.text.trim(),
              phoneNumber: _phoneNumberController.text.trim(),
              email: _emailController.text.trim(),
              password: _passwordController.text.trim(),
              passwordConfirmation: _passwordConfirmController.text.trim(),
            ),
          );

      await ref
          .read(authControllerProvider.notifier)
          .login(
            LoginUser(
              identifier: _phoneNumberController.text.trim(),
              password: _passwordController.text.trim(),
            ),
          );

      if (!mounted) return;

      await _setCurrentOutlet();

      await _setCurrentUser();

      CustomSnackbar.showSuccess(context, "Berhasil login");
      context.goNamed(AppRoute.homeScreen);
    } on ServerException catch (e) {
      if (!mounted) ;

      CustomSnackbar.showError(context, e.message);
    } catch (e, st) {
      LogMessage.log.e(e.toString(), error: e, stackTrace: st);
      CustomSnackbar.showError(context, "Ups, terjadi kesalahan");
    }
  }

  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (context, constraints) {
        final bool isTablet = 100.w >= 600;

        final authControllerState = ref.watch(authControllerProvider);

        final isLoading = authControllerState.isLoading;

        return SafeArea(
          top: false,
          bottom: true,
          right: false,
          left: false,
          child: Scaffold(
            backgroundColor: Colors.white,
            body: SafeArea(
              child: SingleChildScrollView(
                padding: EdgeInsets.symmetric(horizontal: 8.w, vertical: 5.h),
                child: Form(
                  key: _formKey,
                  child: Column(
                    children: [
                      Image.asset(AppAsset.LOGO_UPDATE, height: 12.h),

                      SizedBox(height: 2.5.h),

                      Text(
                        "Daftar Akun",
                        style: TextStyle(
                          fontSize: AppFontSize.large.sp,
                          fontWeight: FontWeight.bold,
                          color: AppColor.primaryColor,
                        ),
                      ),
                      SizedBox(height: 1.h),
                      Text(
                        "Setiap hal besar selalu dimulai dengan hal kecil. perkuat pondasi bisnimu dan gunakan strategi terbaik",
                        textAlign: TextAlign.center,
                        style: TextStyle(
                          fontSize: isTablet
                              ? AppFontSize.medium.sp
                              : AppFontSize.small.sp,
                          color: Colors.grey,
                        ),
                      ),

                      SizedBox(height: 4.h),

                      CustomTextFormField(
                        label: "Nama Usaha/Perusahaan",
                        hint: "Contoh: Ayam Gepok Pojok",
                        controller: _businessNameController,
                        prefixIcon: Icons.business_center_outlined,
                        validator: (value) => _validation(
                          value: value,
                          message: "Nama usaha belum diisi",
                        ),
                        readOnly: isLoading,
                      ),

                      SizedBox(height: 2.5.h),

                      CustomTextFormField(
                        label: "Nama Pemilik",
                        hint: "John Doe",
                        controller: _nameController,
                        prefixIcon: Icons.person_outline,
                        validator: (value) => _validation(
                          value: value,
                          message: "Nama pemilik belum diisi",
                        ),
                        readOnly: isLoading,
                      ),

                      SizedBox(height: 2.5.h),

                      CustomTextFormField(
                        label: "No. Whatsapp",
                        hint: "Contoh:081234xxxxxx",
                        keyboardType: TextInputType.phone,
                        controller: _phoneNumberController,
                        prefixIcon: Icons.phone_outlined,
                        validator: (value) => _validation(
                          value: value,
                          message: "No. Whatsapp belum diisi",
                        ),
                        readOnly: isLoading,
                      ),

                      SizedBox(height: 2.5.h),

                      CustomTextFormField(
                        label: "Email",
                        hint: "Opsional (Disarankan)",
                        keyboardType: TextInputType.emailAddress,
                        controller: _emailController,
                        prefixIcon: Icons.mail_outline_outlined,
                        validator: (value) =>
                            _validation(value: value, isEmail: true),
                        readOnly: isLoading,
                      ),

                      SizedBox(height: 2.5.h),

                      CustomTextFormField(
                        label: "Password",
                        hint: "••••••••",
                        controller: _passwordController,
                        prefixIcon: Icons.lock_outline,
                        isObscure: _obscurePassword,
                        suffixIcon: _obscurePassword
                            ? Icons.visibility_off
                            : Icons.visibility,
                        suffixPressed: () {
                          setState(() {
                            _obscurePassword = !_obscurePassword;
                          });
                        },
                        validator: (value) => _validation(
                          value: value,
                          message: "Password belum diisi",
                          isPassword: true,
                        ),
                        readOnly: isLoading,
                      ),

                      SizedBox(height: 2.5.h),

                      CustomTextFormField(
                        label: "Konfirmasi Password",
                        hint: "••••••••",
                        controller: _passwordConfirmController,
                        prefixIcon: Icons.lock_outline,
                        isObscure: _obscurePasswordConfirm,
                        suffixIcon: _obscurePasswordConfirm
                            ? Icons.visibility_off
                            : Icons.visibility,
                        suffixPressed: () {
                          setState(() {
                            _obscurePasswordConfirm = !_obscurePasswordConfirm;
                          });
                        },
                        validator: (value) => _validation(
                          value: value,
                          message: "Konfirmasi password belum diisi",
                          isPasswordConfirm: true,
                        ),
                        readOnly: isLoading,
                      ),

                      SizedBox(height: 2.5.h),

                      ElevatedButton(
                        onPressed: isLoading ? null : _register,
                        style: ElevatedButton.styleFrom(
                          backgroundColor: AppColor.primaryColor,
                          minimumSize: Size(double.infinity, 7.h),
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(3.w),
                          ),
                          elevation: 2,
                          disabledBackgroundColor: Colors.grey.shade300,
                        ),
                        child: Text(
                          "Daftar Sekarang",
                          style: TextStyle(
                            color: Colors.white,
                            fontWeight: FontWeight.bold,
                            fontSize: AppFontSize.medium.sp,
                          ),
                        ),
                      ),

                      SizedBox(height: 4.h),

                      Row(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          Text(
                            "Sudah punya akun? ",
                            style: TextStyle(
                              fontSize: isTablet
                                  ? AppFontSize.medium.sp
                                  : AppFontSize.small.sp,
                            ),
                          ),
                          GestureDetector(
                            onTap: () => context.canPop()
                                ? context.pop()
                                : context.goNamed(AppRoute.ownerLoginScreen),
                            child: Text(
                              "Masuk",
                              style: TextStyle(
                                color: AppColor.primaryColor,
                                fontWeight: FontWeight.bold,
                                fontSize: isTablet
                                    ? AppFontSize.medium.sp
                                    : AppFontSize.small.sp,
                              ),
                            ),
                          ),
                        ],
                      ),

                      SizedBox(height: 2.5.h),
                      Text(
                        "Powered By P.T. Niaga Nusantara",
                        style: TextStyle(
                          color: Colors.grey.shade600,
                          fontWeight: FontWeight.w500,
                          fontSize: isTablet
                              ? AppFontSize.medium.sp
                              : AppFontSize.small.sp,
                        ),
                      ),
                      SizedBox(height: 0.75.h),
                      Text(
                        "Versi 1.0.0",
                        style: TextStyle(
                          color: Colors.grey,
                          fontSize: isTablet
                              ? AppFontSize.medium.sp
                              : AppFontSize.small.sp,
                        ),
                      ),
                    ],
                  ),
                ),
              ),
            ),
          ),
        );
      },
    );
  }
}