import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';
import 'package:stacked/stacked.dart';

import '../../../common/app_colors.dart';
import '../../../common/ui_helpers.dart';
import '../../../widgets/duolingo_assessment_app_bar.dart';
import '../../../widgets/custom_elevated_button.dart';
import '../duolingo_viewmodel.dart';

class DuolingoRetakeScreen extends ViewModelWidget<DuolingoViewModel> {
  final String title;
  final String subtitle;
  const DuolingoRetakeScreen(
      {super.key, required this.title, required this.subtitle});

  @override
  Widget build(BuildContext context, DuolingoViewModel viewModel) =>
      _buildScaffoldWrapper(viewModel);

  Widget _buildScaffoldWrapper(DuolingoViewModel viewModel) => Scaffold(
        backgroundColor: kcBackgroundColor,
        body: _buildSafeWrapper(viewModel),
      );
  Widget _buildSafeWrapper(DuolingoViewModel viewModel) =>
      SafeArea(child: _buildScaffold(viewModel));

  Widget _buildScaffold(DuolingoViewModel viewModel) => Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: _buildScaffoldChildren(viewModel),
      );

  List<Widget> _buildScaffoldChildren(DuolingoViewModel viewModel) => [
        _buildAppBar(viewModel),
        verticalSpaceMedium,
        _buildExpandedBody(viewModel)
      ];

  Widget _buildExpandedBody(DuolingoViewModel viewModel) =>
      Expanded(child: _buildBodyWrapper(viewModel));

  Widget _buildBodyWrapper(DuolingoViewModel viewModel) => Padding(
        padding: const EdgeInsets.symmetric(horizontal: 15),
        child: _buildBody(viewModel),
      );

  Widget _buildBody(DuolingoViewModel viewModel) => Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: _buildBodyChildren(viewModel),
      );

  List<Widget> _buildBodyChildren(DuolingoViewModel viewModel) =>
      [_buildUpperColumn(viewModel), _buildLowerColumn(viewModel)];

  Widget _buildUpperColumn(DuolingoViewModel viewModel) => Column(
        mainAxisSize: MainAxisSize.min,
        mainAxisAlignment: MainAxisAlignment.center,
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: _buildUpperColumnChildren(viewModel),
      );

  List<Widget> _buildUpperColumnChildren(DuolingoViewModel viewModel) => [
        verticalSpaceLarge,
        _buildIcon(),
        verticalSpaceMedium,
        _buildTitle(),
        verticalSpaceSmall,
        _buildSubtitle(),
      ];

  Widget _buildAppBar(DuolingoViewModel viewModel) => DuolingoAssessmentAppBar(
        onClose: () => viewModel.goTo(0),
      );

  Widget _buildIcon() => SvgPicture.asset(
        'assets/icons/complete.svg',
      );

  Widget _buildTitle() => Text(
        title,
        style: style25DG600,
        textAlign: TextAlign.center,
      );

  Widget _buildSubtitle() => Text(
        subtitle,
        style: style14MG400,
        textAlign: TextAlign.center,
      );

  Widget _buildLowerColumn(DuolingoViewModel viewModel) => Column(
        mainAxisSize: MainAxisSize.min,
        children: _buildLowerColumnChildren(viewModel),
      );

  List<Widget> _buildLowerColumnChildren(DuolingoViewModel viewModel) => [
        _buildContinueButton(viewModel),
        verticalSpaceSmall,
        _buildSkipButtonWrapper(viewModel)
      ];

  Widget _buildContinueButton(DuolingoViewModel viewModel) =>
      CustomElevatedButton(
        height: 55,
        safe: false,
        borderRadius: 12,
        text: 'Practice Again',
        foregroundColor: kcWhite,
        onTap: () => viewModel.goTo(0),
        backgroundColor: kcPrimaryColor,
      );

  Widget _buildSkipButtonWrapper(DuolingoViewModel viewModel) => Padding(
        padding: const EdgeInsets.only(bottom: 50),
        child: _buildSkipButton(viewModel),
      );

  Widget _buildSkipButton(DuolingoViewModel viewModel) => CustomElevatedButton(
        height: 55,
        text: 'Continue',
        borderRadius: 12,
        backgroundColor: kcWhite,
        borderColor: kcPrimaryColor,
        onTap: () => viewModel.goTo(6),
        foregroundColor: kcPrimaryColor,
      );
}