import 'package:flutter/material.dart';
import 'package:stacked/stacked.dart';
import 'package:yimaru_app/ui/common/enmus.dart';
import 'package:yimaru_app/ui/widgets/learn_module_tile.dart';
import 'package:yimaru_app/ui/widgets/overall_learn_progress.dart';

import '../../common/app_colors.dart';
import '../../common/ui_helpers.dart';
import '../../widgets/small_app_bar.dart';
import 'learn_module_viewmodel.dart';

class LearnModuleView extends StackedView<LearnModuleViewModel> {
  const LearnModuleView({Key? key}) : super(key: key);

  @override
  LearnModuleViewModel viewModelBuilder(BuildContext context) =>
      LearnModuleViewModel();

  @override
  Widget builder(
    BuildContext context,
    LearnModuleViewModel viewModel,
    Widget? child,
  ) =>
      _buildScaffoldWrapper(viewModel);

  Widget _buildScaffoldWrapper(LearnModuleViewModel viewModel) => Scaffold(
        backgroundColor: kcBackgroundColor,
        body: _buildScaffold(viewModel),
      );

  Widget _buildScaffold(LearnModuleViewModel viewModel) =>
      SafeArea(child: _buildBody(viewModel));

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

  Widget _buildColumn(LearnModuleViewModel viewModel) => Column(
        children: [
          verticalSpaceMedium,
          _buildAppBar(viewModel),
          _buildLevelsColumnWrapper(viewModel),
        ],
      );

  Widget _buildAppBar(LearnModuleViewModel viewModel) => SmallAppBar(
        onTap: viewModel.pop,
      );

  Widget _buildLevelsColumnWrapper(LearnModuleViewModel viewModel) =>
      Expanded(child: _buildLevelsColumnScrollView(viewModel));

  Widget _buildLevelsColumnScrollView(LearnModuleViewModel viewModel) =>
      SingleChildScrollView(
        child: _buildLevelsColumn(viewModel),
      );

  Widget _buildLevelsColumn(LearnModuleViewModel viewModel) => Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: _buildLevelsColumnChildren(viewModel),
      );

  List<Widget> _buildLevelsColumnChildren(LearnModuleViewModel viewModel) => [
        verticalSpaceMedium,
        _buildTitle(),
        _buildSubTitle(),
        verticalSpaceMedium,
        _buildOverallProgress(),
        verticalSpaceMedium,
        _buildListView(viewModel)
      ];

  Widget _buildTitle() => const Text(
        'A1 - Beginner',
        style: TextStyle(
          fontSize: 18,
          color: kcPrimaryColor,
          fontWeight: FontWeight.w600,
        ),
      );

  Widget _buildSubTitle() => const Text(
        'Your Current Level',
        style: TextStyle(
          color: kcDarkGrey,
        ),
      );

  Widget _buildOverallProgress() => const OverallLearnProgress();

  Widget _buildListView(LearnModuleViewModel viewModel) => ListView.builder(
        shrinkWrap: true,
        itemCount: viewModel.modules.length,
        physics: const NeverScrollableScrollPhysics(),
        itemBuilder: (context, index) => _buildTile(
            title: viewModel.modules[index]['title'],
            status: viewModel.modules[index]['status'],
            subtitle: viewModel.modules[index]['subtitle']),
      );

  Widget _buildTile({
    required String title,
    required String subtitle,
    required ProgressStatuses status,
  }) =>
      LearnModuleTile(
        title: title,
        status: status,
        subtitle: subtitle,
      );
}