eatvio_app_old/lib/presentation/registration/name_screen/name_screen.dart

import 'package:eatvio_app/app_router.dart';
import 'package:go_router/go_router.dart';

import 'bloc/name_bloc.dart';
import 'models/name_model.dart';
import 'package:eatvio_app/core/app_export.dart';
import 'package:eatvio_app/widgets/app_bar/appbar_leading_image.dart';
import 'package:eatvio_app/widgets/app_bar/appbar_title_image.dart';
import 'package:eatvio_app/widgets/app_bar/custom_app_bar.dart';
import 'package:eatvio_app/widgets/next_step_button.dart';
import 'package:eatvio_app/data/models/userRegistrationModel/user_registration_model.dart';
import 'package:eatvio_app/widgets/custom_text_form_field.dart';
import 'package:flutter/material.dart';

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

  static Widget builder(BuildContext context, sheet) {
    return BlocProvider<NameBloc>(
      create: (context) => NameBloc(
        NameState(
          nameModelObj: NameModel(userRegistrationSheet: sheet),
        ),
      )..add(NameInitialEvent()),
      child: NameScreen(),
    );
  }

  @override
  Widget build(BuildContext context) {
    mediaQueryData = MediaQuery.of(context);
    return Scaffold(
      resizeToAvoidBottomInset: false,
      appBar: _buildAppBar(context),
      body: Container(
        width: double.maxFinite,
        padding: EdgeInsets.symmetric(horizontal: 16.h, vertical: 9.v),
        child: Column(
          children: [
            SizedBox(height: 7.v),
            Container(
              height: 16.v,
              width: 343.h,
              decoration: BoxDecoration(
                color: theme.colorScheme.onPrimary,
                borderRadius: BorderRadius.circular(8.h),
                border: Border.all(color: theme.colorScheme.primary, width: 1.h),
              ),
              child: ClipRRect(
                borderRadius: BorderRadius.circular(8.h),
                child: LinearProgressIndicator(
                  value: (2 / 15).toDouble(),
                  backgroundColor: theme.colorScheme.onPrimary,
                  valueColor: AlwaysStoppedAnimation<Color>(appTheme.blueA400),
                ),
              ),
            ),
            SizedBox(height: 39.v),
            Text("what_is_your_name".tr, style: theme.textTheme.headlineSmall),
            SizedBox(height: 93.v),
            Text("first_name".tr, style: theme.textTheme.bodyLarge),
            SizedBox(height: 3.v),
            BlocSelector<NameBloc, NameState, TextEditingController?>(
              selector: (state) => state.firstNameController,
              builder: (context, firstNameController) {
                return CustomTextFormField(controller: firstNameController, textInputAction: TextInputAction.done);
              },
            ),
            SizedBox(height: 19.v),
            Text("last_name".tr, style: theme.textTheme.bodyLarge),
            SizedBox(height: 5.v),
            BlocSelector<NameBloc, NameState, TextEditingController?>(
              selector: (state) => state.lastNameController,
              builder: (context, lastNameController) {
                return CustomTextFormField(
                  controller: lastNameController,
                );
              },
            ),
            Spacer(),
            BlocBuilder<NameBloc, NameState>(
              builder: (context, state) {
                return NextStepButton(
                  text: "continue".tr.toUpperCase(),
                  margin: EdgeInsets.only(left: 16.h, right: 16.h, bottom: 50.v),
                  buttonStyle: CustomButtonStyles.outlinePrimaryTL15,
                  onPressed: () => _onTapNext(context, state), // Assign callback function here
                );
              },
            ),
          ],
        ),
      ),
    );
  }

  /// Section Widget
  _buildAppBar(BuildContext context) {
    return CustomAppBar(
      leadingWidth: 29.h,
      leading: AppbarLeadingImage(
        imagePath: ImageConstant.imgArrowLeft,
        margin: EdgeInsets.only(left: 16.h, top: 15.v, bottom: 15.v),
        onTap: () => onTapArrowLeft(context),
      ),
      centerTitle: true,
      title: AppbarTitleImage(imagePath: ImageConstant.imgLogoEatvio),
    );
  }

  /// Navigates to the previous screen.
  onTapArrowLeft(BuildContext context) {
    GoRouter.of(context).pop();
  }

  _onTapNext(BuildContext context, NameState state) {
    if (state.firstNameController != null && state.lastNameController != null) {
      List<String> errors = validateFields(state.firstNameController!.text, state.lastNameController!.text);

      if (errors.isEmpty) {
        UserRegistrationSheet sheet = state.nameModelObj!.userRegistrationSheet;
        sheet.firstName = state.firstNameController!.text;
        sheet.lastName = state.lastNameController!.text;
        AppRouter.navigatorKey.currentContext?.goNamed('genderScreen', extra: sheet);
      } else {
        String errorMessage = '';

        for (var error in errors) {
          errorMessage += error + '\n\n';
        }

        showDialog(
          context: context,
          builder: (context) => AlertDialog(
            title: Text('Error'),
            content: Text(errorMessage),
            actions: [
              TextButton(
                onPressed: () => onTapOk(context),
                child: Text('OK'),
              ),
            ],
          ),
        );
      }
    }
  }

  void onTapOk(BuildContext context) {
    Navigator.pop(context);
  }

  List<String> validateFields(String firstName, String lastName) {
    List<String> errors = [];

    if (firstName.isEmpty) {
      errors.add('First name cannot be empty');
    }

    if (firstName.length < 1) {
      errors.add('First name is too short');
    }

    if (lastName.isEmpty) {
      errors.add('Last name cannot be empty');
    }

    if (lastName.length < 1) {
      errors.add('Last name is too short');
    }

    return errors;
  }
}