sample.base.dart

import 'package:app/base/failure/failure.dart';
import 'package:app/base/widget/custom_app_bar.dart';
import 'package:app/base/widget/loading.dart';
import 'package:app/config/colors.dart';
import 'package:app/config/dimensions.dart';
import 'package:app/config/text_styles.dart';
import 'package:app/utils/failure_helper.dart';
import 'package:equatable/equatable.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

abstract class BlocPageStateFull<
bloc extends Bloc<dynamic, state>,
state extends Equatable,
statefulWidget extends StatefulWidget> extends State<statefulWidget> {
  final String title;
  final Color backgroundColor;

  BlocPageStateFull(this.title,
      {this.backgroundColor = MyColors.defaultBackgroundColor});

  @override
  Widget build(BuildContext context) {
    return BlocListener<bloc, state>(
      listener: (context, state) {
        listener(context, state);
      },
      child: BlocBuilder<bloc, state>(
        builder: (context, state) {
          return getWidget(context, state);
        },
      ),
    );
  }

  Widget getAppBar(BuildContext context, Equatable state) {
    return CustomAppBar(title);
  }

  Failure getFailure(Equatable state) {
    return null;
  }

  Widget getErrorBar(BuildContext context, Equatable state) {
    Failure failure = getFailure(state);
    if (failure == null) return SizedBox();
    return Center(
      child: Padding(
        padding: const EdgeInsets.only(
            top: kNormalSpace, left: kNormalSpace, right: kNormalSpace),
        child: Text(FailureHelper.message(failure),
            style: MyTextStyle.error),
      ),
    );
  }

  Widget getTopLoading(BuildContext context, Equatable state) {
    return LoadingWidget();
  }

  Widget getBottomLoading(BuildContext context, Equatable state) {
    return LoadingWidget();
  }

  Widget getBody(BuildContext context, Equatable state);

  Widget getWidget(BuildContext context, Equatable state) {
    return Scaffold(
      body: SafeArea(
        child: Container(
          color: backgroundColor,
          child: Column(
            children: <Widget>[
              getAppBar(context, state),
              getErrorBar(context, state),
              getTopLoading(context, state),
              Expanded(
                  child: Padding(
                      padding: EdgeInsets.only(top: kNormalSpace),
                      child: getBody(context, state))),
              getBottomLoading(context, state),
            ],
          ),
        ),
      ),
    );
  }

  void listener(BuildContext context, Equatable state);

  bloc getBloc() {
    return BlocProvider.of<bloc>(context);
  }
}