import 'package:aitrainer_app/bloc/account/account_bloc.dart';
import 'package:aitrainer_app/model/auth.dart';
import 'package:aitrainer_app/repository/user_repository.dart';
import 'package:aitrainer_app/util/common.dart';
import 'package:flutter_form_bloc/flutter_form_bloc.dart';

class LoginFormBloc extends FormBloc<String, String> {
  final AccountBloc accountBloc;
  final UserRepository userRepository;

  final emailField = TextFieldBloc(
    validators: [
      FieldBlocValidators.required,
    ],
  );
  final passwordField = TextFieldBloc(
    validators: [
      FieldBlocValidators.required,
    ]
  );


  LoginFormBloc({this.userRepository, this.accountBloc}) {
    addFieldBlocs(fieldBlocs: [
      emailField,
      passwordField
    ]);
    
    emailField.onValueChanges(onData: (previous, current) async* {
      userRepository.setEmail(current.value);
    });

    passwordField.onValueChanges(onData: (previous, current) async* {
      userRepository.setPassword(current.value);
    });

  }

  @override
  void onSubmitting() async {
    try {
      emitLoading(progress: 30);
      if ( ! Common.validateEmail(userRepository)) {
        emailField.addFieldError(Common.EMAIL_ERROR, isPermanent: true);

        emitFailure(failureResponse: Common.EMAIL_ERROR);
      } else if ( ! Common.validatePassword(userRepository)) {
        passwordField.addFieldError(Common.PASSWORD_ERROR, isPermanent: true);
        emitFailure(failureResponse: Common.PASSWORD_ERROR);
      } else {
        // Emit either Loaded or Error
        await userRepository.getUser();
        emitSuccess(canSubmitAgain: false);
        accountBloc.add(AccountLogInFinished(customer: Auth().userLoggedIn));
      }
    } on Exception catch (ex) {
      emitFailure(failureResponse: ex.toString());

    }
  }
}