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';

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: Container(
            width: double.maxFinite,
            padding: EdgeInsets.symmetric(horizontal: 16.h, vertical: 9.v),
            child: Column(children: [
              SizedBox(height: 39.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,
                    );
                  }),
              Spacer(),
              NextStepButton(
                  text: "no_account".tr.toUpperCase(),
                  margin:
                      EdgeInsets.only(left: 16.h, right: 16.h, bottom: 50.v),
                  buttonStyle: CustomButtonStyles.outlinePrimaryTL15,
                  onPressed: () {
                    Navigator.pushNamed(
                        context, AppRoutes.languageSelectScreen);
                  }),
              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: () {
                      List<String> errors = validateFields(
                          state.emailController!.text,
                          state.passwordController!.text);
                      if (errors.isEmpty) {
                        Navigator.pushNamed(
                          context,
                          AppRoutes.myProfile,
                        );
                      } 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: () {
                                  Navigator.pop(context);
                                },
                                child: Text('OK'),
                              ),
                            ],
                          ),
                        );
                      }
                    });
              }),
            ])));
  }

  /// Section Widget
  PreferredSizeWidget _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;
  }
}