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

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

  @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: 0.05,
                          backgroundColor: theme.colorScheme.onPrimary,
                          valueColor: AlwaysStoppedAnimation<Color>(
                              appTheme.blueA400)))),
              SizedBox(height: 39.v),
              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);
                  }),
              Spacer(),
              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;
        Navigator.pushNamed(
          context,
          AppRoutes.nameScreen,
          arguments: 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);
    };
  }

  /// Section Widget
  _buildAppBar(BuildContext context) {
    return CustomAppBar(
        leadingWidth: 29.h,
        centerTitle: true,
        title: AppbarTitleImage(imagePath: ImageConstant.imgLogoEatvio));
  }

  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;
  }
}