eatvio_app/lib/presentation/auth/auth_screen/auth_screen.dart

import 'package:eatvio_app/core/token_storage.dart';
import 'package:go_router/go_router.dart';

import 'bloc/auth_bloc.dart';
import 'models/auth_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/widgets/custom_text_form_field.dart';
import 'package:flutter/material.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'dart:convert';
import 'package:hive/hive.dart';
import 'package:http/http.dart' as http;

class AuthScreen extends StatelessWidget {
  static Widget builder(BuildContext context) {
    return BlocProvider<AuthBloc>(
      create: (context) => AuthBloc(
        AuthState(
          authModelObj: AuthModel(),
        ),
      )..add(
          AuthInitialEvent(),
        ),
      child: AuthScreen(),
    );
  }

  @override
  Widget build(BuildContext context) {
    mediaQueryData = MediaQuery.of(context);
    return Scaffold(
        resizeToAvoidBottomInset: false,
        appBar: _buildAppBar(context),
        body: GestureDetector(
            onTap: () => FocusScope.of(context).unfocus(),
            child: Container(
                width: double.maxFinite,
                padding: EdgeInsets.symmetric(horizontal: 16.h, vertical: 9.v),
                child: Column(children: [
                  SizedBox(height: 36.v),
                  Text("user_authorization".tr, style: theme.textTheme.headlineSmall),
                  SizedBox(height: 60.v),
                  Text("email".tr, style: theme.textTheme.bodyLarge),
                  SizedBox(height: 3.v),
                  BlocSelector<AuthBloc, AuthState, TextEditingController?>(
                      selector: (state) => state.emailController,
                      builder: (context, emailController) {
                        return CustomTextFormField(controller: emailController, textInputAction: TextInputAction.done);
                      },),
                  SizedBox(height: 22.v),
                  Text("password".tr, style: theme.textTheme.bodyLarge),
                  SizedBox(height: 5.v),
                  BlocSelector<AuthBloc, AuthState, TextEditingController?>(
                      selector: (state) => state.passwordController,
                      builder: (context, passwordController) {
                        return CustomTextFormField(
                          obscureText: true,
                          controller: passwordController,
                        );
                      },),
                  SizedBox(height: 50.v),
                  NextStepButton(
                    text: "no_account".tr.toUpperCase(),
                    margin: EdgeInsets.only(left: 16.h, right: 16.h, bottom: 50.v),
                    buttonStyle: CustomButtonStyles.outlinePrimaryTL15,
                    onPressed: onTapNoAccount(context),
                  ),
                  /*NextStepButton(
                  text: "Тест дневника".toUpperCase(),
                  margin:
                      EdgeInsets.only(left: 16.h, right: 16.h, bottom: 50.v),
                  buttonStyle: CustomButtonStyles.outlinePrimaryTL15,
                  onPressed: onTapDiaryTest(context)),
              NextStepButton(
                  text: "authentificate".tr.toUpperCase(),
                  margin:
                      EdgeInsets.only(left: 16.h, right: 16.h, bottom: 50.v),
                  buttonStyle: CustomButtonStyles.outlinePrimaryTL15,
                  onPressed: onTapProfileTest(context)),*/
                  BlocBuilder<AuthBloc, AuthState>(builder: (context, state) {
                    return NextStepButton(
                        text: "authentificate".tr.toUpperCase(),
                        margin: EdgeInsets.only(left: 16.h, right: 16.h, bottom: 50.v),
                        buttonStyle: CustomButtonStyles.outlinePrimaryTL15,
                        onPressed: onTapAuth(state, context),);
                  },),
                ],),),),);
  }

  onTapAuth(AuthState state, BuildContext context) {
    return () async {
      List<String> errors = validateFields(state.emailController!.text, state.passwordController!.text);
      if (errors.isEmpty) {
        final Map<String, dynamic> credentials = {
          'email': state.emailController!.text,
          'password': state.passwordController!.text,
        };
        final response = await http.post(Uri.parse(dotenv.env['SERVER_ROOT']! + '/login'),
            headers: {'Content-Type': 'application/json'}, body: json.encode(credentials), encoding: utf8,);
        print(response.statusCode);
        if (response.statusCode == 200) {
          var res = await jsonDecode(response.body);
          final box = await Hive.openBox('token');
          final token = res['token'];
          box.put('token', token);
          TokenStorage.saveTokenInStorage(token);
          GoRouter.of(context).go('/my-profile-screen');
        } else {
          showDialog(
            context: context,
            builder: (context) => AlertDialog(
              title: Text('Ошибка'),
              content: Text('wrong_credentials'.tr),
              actions: [
                TextButton(
                  onPressed: onTapOk(context),
                  child: Text('OK'),
                ),
              ],
            ),
          );
        }
      } 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 () {
      GoRouter.of(context).pop(context);
    };
  }

  onTapDiaryTest(BuildContext context) {
    return () {
      GoRouter.of(context).goNamed('diaryScreen');
    };
  }

  onTapProfileTest(BuildContext context) {
    return () {
      GoRouter.of(context).goNamed('mySettingsScreen');
    };
  }

  onTapNoAccount(BuildContext context) {
    return () {
      GoRouter.of(context).goNamed('languageSelectScreen');
    };
  }

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

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

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

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

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

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

    return errors;
  }
}