eatvio_app/lib/presentation/registration/credentials_screen/credentials_screen.dart

import 'package:go_router/go_router.dart';

import 'bloc/credentials_bloc.dart';
import 'models/credentials_model.dart';
import 'package:eatvio_app/core/app_export.dart';
import 'package:validators/validators.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 CredentialsScreen extends StatelessWidget {
  static Widget builder(BuildContext context, sheet) {
    return BlocProvider<CredentialsBloc>(
      create: (context) => CredentialsBloc(
        CredentialsState(
          credentialsModelObj: CredentialsModel(userRegistrationSheet: sheet),
        ),
      )..add(CredentialsInitialEvent()),
      child: CredentialsScreen(),
    );
  }

  @override
  Widget build(BuildContext context) {
    return SingleChildScrollView(
      padding: EdgeInsets.only(bottom: 80),
      child: Container(
        width: double.maxFinite,
        padding: EdgeInsets.symmetric(horizontal: 16.h, vertical: 9.v),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text("user_registration".tr, style: theme.textTheme.headlineSmall),
            SizedBox(height: 16.v),
            Text("email".tr, style: theme.textTheme.bodyLarge),
            SizedBox(height: 3.v),
            BlocSelector<CredentialsBloc, CredentialsState, TextEditingController?>(
              selector: (state) => state.emailController,
              builder: (context, emailController) {
                return CustomTextFormField(controller: emailController, textInputAction: TextInputAction.done);
              },
            ),
            SizedBox(height: 22.v),
            Text("username".tr, style: theme.textTheme.bodyLarge),
            SizedBox(height: 3.v),
            BlocSelector<CredentialsBloc, CredentialsState, TextEditingController?>(
              selector: (state) => state.nameController,
              builder: (context, nameController) {
                return CustomTextFormField(controller: nameController, textInputAction: TextInputAction.done);
              },
            ),
            SizedBox(height: 19.v),
            Text("password".tr, style: theme.textTheme.bodyLarge),
            SizedBox(height: 5.v),
            BlocSelector<CredentialsBloc, CredentialsState, TextEditingController?>(
              selector: (state) => state.passwordController,
              builder: (context, passwordController) {
                return CustomTextFormField(
                  obscureText: true,
                  controller: passwordController,
                );
              },
            ),
            SizedBox(height: 21.v),
            Text("password_confirmation".tr, style: theme.textTheme.bodyLarge),
            SizedBox(height: 3.v),
            BlocSelector<CredentialsBloc, CredentialsState, TextEditingController?>(
              selector: (state) => state.passwordConfirmationController,
              builder: (context, passwordConfirmationController) {
                return CustomTextFormField(obscureText: true, controller: passwordConfirmationController, textInputAction: TextInputAction.done);
              },
            ),
            // BlocBuilder<CredentialsBloc, CredentialsState>(
            //   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: onTapContinue(state, context),
            //     );
            //   },
            // ),
          ],
        ),
      ),
    );
  }

  onTapContinue(CredentialsState state, BuildContext context) {
    return () {
      List<String> errors =
          validateFields(state.emailController!.text, state.nameController!.text, state.passwordController!.text, state.passwordConfirmationController!.text);
      if (errors.isEmpty) {
        UserRegistrationSheet sheet = state.credentialsModelObj!.userRegistrationSheet;
        sheet.email = state.emailController!.text;
        sheet.name = state.nameController!.text;
        sheet.password = state.passwordController!.text;
        sheet.passwordConfirmation = state.passwordConfirmationController!.text;
        GoRouter.of(context).goNamed('nameScreen', extra: sheet);
      } else {
        String errorMessage = '';

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

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

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


  List<String> validateFields(String email, String name, String password, String passwordConfirmation) {
    List<String> errors = [];

    if (!isEmail(email)) {
      errors.add('email_invalid'.tr);
    }

    if (email.isEmpty) {
      errors.add('email_empty'.tr);
    }

    if (name.length < 6) {
      errors.add('name_short'.tr);
    }

    if (name.isEmpty) {
      errors.add('name_empty'.tr);
    }

    if (password.isEmpty) {
      errors.add('name_empty'.tr);
    }

    if (password.length < 6) {
      errors.add('password_short'.tr);
    }

    if (password != passwordConfirmation) {
      errors.add('password_confirmation_mismatch'.tr);
    }

    return errors;
  }
}