section_page.dart
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import 'package:audioplayers/audioplayers.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:nested_scroll_views/material.dart';
import 'package:wow_english/common/core/user_util.dart';
import 'package:wow_english/common/extension/string_extension.dart';
import 'package:wow_english/models/course_unit_entity.dart';
import 'package:wow_english/pages/section/section_type.dart';
import 'package:wow_english/pages/section/widgets/section_item.dart';
import 'package:wow_english/pages/section/widgets/section_bouns_item.dart';
import 'package:wow_english/pages/section/widgets/section_header_widget.dart';
import 'package:wow_english/route/route.dart';
import 'package:wow_english/utils/audio_player_util.dart';
import 'package:wow_english/utils/log_util.dart';
import 'package:wow_english/utils/toast_util.dart';
import '../../models/course_section_entity.dart';
import 'bloc/section_bloc.dart';
import 'courese_module_model.dart';
/// 环节列表页
class SectionPage extends StatelessWidget {
const SectionPage(
{super.key, required this.courseUnitEntity, required this.courseUnitId});
final CourseUnitEntity courseUnitEntity;
/// unitId
final int courseUnitId;
@override
Widget build(BuildContext context) {
int initialPage = courseUnitEntity.courseUnitVOList
?.indexWhere((element) => element.id == courseUnitId) ??
0;
return BlocProvider(
create: (context) => SectionBloc(
courseUnitEntity,
initialPage,
PageController(initialPage: initialPage),
ScrollController(),
ScrollController())
..add(InitEvent()),
//为了触发指示器进入后计算位置
// ..add(CurrentUnitIndexChangeEvent(initialPage)),
child: _SectionPageView(context),
);
}
}
class _SectionPageView extends StatelessWidget {
const _SectionPageView(this.context);
final BuildContext context;
@override
Widget build(BuildContext context) {
final bloc = BlocProvider.of<SectionBloc>(context);
return BlocListener<SectionBloc, SectionState>(
listener: (context, state) async {
if (state is RequestVideoLessonState) {
final videoUrl = bloc.processEntity?.videos?.videoUrl ?? '';
var title = '';
if (state.type == SectionType.song.value) {
title = 'song';
}
if (state.type == SectionType.video.value) {
title = 'video';
}
if (state.type == SectionType.bouns.value) {
title = 'bonus';
}
if (videoUrl.isEmpty || !videoUrl.contains('http')) {
return;
}
pushNamed(AppRouteName.lookVideo, arguments: {
'videoUrl': videoUrl,
'title': title,
'courseLessonId': state.courseLessonId,
'isTopic': true
}).then((value) {
if (value != null) {
Map<String, dynamic> dataMap = value as Map<String, dynamic>;
bloc.add(RequestEndClassEvent(
dataMap['courseLessonId']!, dataMap['isCompleted'],
currentTime: dataMap['currentTime'],
autoNextSection: dataMap['nextSection']));
}
AudioPlayerUtil.getInstance()
.playAudio(AudioPlayerUtilType.countWithMe);
});
return;
}
if (state is RequestEnterClassState) {
if (state.courseType != SectionType.practice.value &&
state.courseType != SectionType.pictureBook.value) {
///视频类型
///获取视频课程内容
if (state.courseType == 1) {
await AudioPlayerUtil.getInstance()
.playAudio(AudioPlayerUtilType.musicTime);
} else {
await AudioPlayerUtil.getInstance()
.playAudio(AudioPlayerUtilType.videoTime);
}
bloc.add(RequestVideoLessonEvent(
state.courseLessonId, state.courseType));
return;
}
if (state.courseType == SectionType.pictureBook.value) {
await AudioPlayerUtil.getInstance()
.playAudio(AudioPlayerUtilType.readingTime);
//绘本
pushNamed(AppRouteName.reading,
arguments: {'courseLessonId': state.courseLessonId})
.then((value) {
if (value != null) {
Map<String, dynamic> dataMap = value as Map<String, dynamic>;
bloc.add(RequestEndClassEvent(
dataMap['courseLessonId']!,
dataMap['isCompleted'],
currentStep: dataMap['currentStep'],
autoNextSection: dataMap['nextSection'],
));
AudioPlayerUtil.getInstance()
.playAudio(AudioPlayerUtilType.countWithMe);
}
});
return;
}
if (state.courseType == SectionType.practice.value) {
//练习
await AudioPlayerUtil.getInstance()
.playAudio(AudioPlayerUtilType.quizTime);
pushNamed(AppRouteName.topicPic,
arguments: {'courseLessonId': state.courseLessonId})
.then((value) {
if (value != null) {
Map<String, dynamic> dataMap = value as Map<String, dynamic>;
bloc.add(RequestEndClassEvent(
dataMap['courseLessonId']!, dataMap['isCompleted'],
currentStep: dataMap['currentStep'],
autoNextSection: dataMap['nextSection']));
}
AudioPlayerUtil.getInstance()
.playAudio(AudioPlayerUtilType.countWithMe);
});
return;
}
}
},
child: _sectionView(),
);
}
Widget _sectionView() =>
BlocBuilder<SectionBloc, SectionState>(builder: (context, state) {
final bloc = BlocProvider.of<SectionBloc>(context);
return Scaffold(
body: Container(
color: Colors.white,
child: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
SectionHeaderWidget(
title: bloc.getCourseUnitDetail().name,
courseModuleCode: bloc.courseUnitEntity.courseModuleCode,
onBack: () {
popPage(data: {
'needRefresh': bloc.courseUnitEntityChanged,
});
}),
Expanded(
child: Padding(
padding: EdgeInsets.symmetric(horizontal: 10.w),
child: NestedPageView.builder(
itemCount: bloc.unlockPageCount(),
controller: bloc.pageController,
onPageChanged: (int index) {
bloc.add(CurrentUnitIndexChangeEvent(index));
},
itemBuilder: (context, index) {
return ScrollConfiguration(
///去掉 Android 上默认的边缘拖拽效果
behavior: ScrollConfiguration.of(context)
.copyWith(overscroll: false),
child: _itemTransCard(
bloc.getCourseUnitDetail(pageIndex: index),
index,
context),
);
}),
)),
SafeArea(
child: SizedBox(
width: 210.w,
height: 40.h,
// child: OverflowBox(
// maxWidth: 300, // 允许内容超出容器宽度
child: ListView.builder(
controller: bloc.indicatorSrollController,
scrollDirection: Axis.horizontal,
itemCount: bloc.unlockPageCount(),
itemBuilder: (context, index) {
bool isSelected = index == bloc.currentPage;
// 计算透明度，使得当前页的指示器不透明，两侧逐渐透明
double opacity = 0.25 +
(1 - ((bloc.currentPage - index).abs() / 2)) *
0.5;
// 限制透明度在 0.5 到 1.0 之间
opacity = opacity.clamp(0.25, 1.0);
return GestureDetector(
onTap: () => bloc.pageController.animateToPage(
index,
duration: const Duration(milliseconds: 60),
curve: Curves.ease),
child: SizedBox(
width: 30.0.w,
height: 30.0.h,
child: Padding(
padding:
EdgeInsets.all(isSelected ? 0.w : 5.w),
child: Opacity(
opacity: opacity,
child: Container(
alignment: Alignment.center,
decoration: BoxDecoration(
color: isSelected
? Colors.blue
: Colors.grey,
shape: BoxShape.circle,
),
child: Text("${index + 1}",
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontSize:
isSelected ? 12.sp : 8.sp)),
),
),
),
),
);
})),
),
// )
],
),
),
),
);
});
}
Widget _itemTransCard(
CourseUnitDetail courseUnitDetail, int pageIndex, BuildContext context) {
final bloc = BlocProvider.of<SectionBloc>(context);
List<CourseSectionEntity>? courseSectionEntities =
bloc.courseSectionDatasMap[courseUnitDetail.id];
if (courseSectionEntities == null) {
bloc.add(RequestDataEvent(courseUnitDetail.id!));
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Text(
'暂无数据',
style: TextStyle(fontSize: 24.0),
),
const SizedBox(height: 16.0),
// 间距
CircularProgressIndicator(
color: CourseModuleModel(
bloc.courseUnitEntity.courseModuleCode ?? 'Phase-1')
.color),
// 加载动画
],
),
);
} else {
return NestedListView.builder(
itemCount: bloc.courseSectionDatasMap[courseUnitDetail.id]?.length ?? 0,
scrollDirection: Axis.horizontal,
itemBuilder: (BuildContext context, int index) {
CourseSectionEntity sectionData = courseSectionEntities[index];
if (sectionData.courseType == SectionType.bouns.value) {
//彩蛋
return GestureDetector(
onTap: () {
if (!UserUtil.isLogined()) {
pushNamed(AppRouteName.login);
return;
}
if (sectionData.lock == true) {
showToast('当前课程暂未解锁');
return;
}
///进入课堂
bloc.add(RequestEnterClassEvent(
sectionData.id.toString(), sectionData.courseType));
},
child: SectionBoundsItem(
imageUrl: sectionData.coverUrl,
),
);
} else {
return GestureDetector(
onTap: () {
if (!UserUtil.isLogined()) {
pushNamed(AppRouteName.login);
return;
}
if (sectionData.lock == true) {
showToast('当前课程暂未解锁');
return;
}
///进入课堂
bloc.add(RequestEnterClassEvent(
sectionData.id.toString(), sectionData.courseType));
},
child: SectionItem(
courseModuleId: bloc.courseUnitEntity.courseModuleCode,
lessons: sectionData,
),
);
}
});
}
}