lib/pages/practice/topic_picture_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:wow_english/common/core/app_consts.dart';
import 'package:wow_english/common/core/user_util.dart';
import 'package:wow_english/common/extension/string_extension.dart';
import 'package:wow_english/common/widgets/ow_image_widget.dart';
import 'package:wow_english/models/course_process_entity.dart';
import 'package:wow_english/pages/practice/topic_type.dart';
import 'package:wow_english/route/route.dart';
import 'package:wow_english/utils/toast_util.dart';
import '../../common/widgets/throttledGesture_gesture_detector.dart';
import 'bloc/topic_picture_bloc.dart';
import 'widgets/practice_header_widget.dart';
class TopicPicturePage extends StatelessWidget {
  const TopicPicturePage({super.key, this.courseLessonId});
  final String? courseLessonId;
  @override
  Widget build(BuildContext context) {
    return BlocProvider(
      create: (context) => TopicPictureBloc(
        context,
        PageController(),
        courseLessonId ?? '',
      )
        ..add(InitBlocEvent())
        ..add(RequestDataEvent())
        ..add(XSVoiceInitEvent({
          'appKey': AppConsts.xsAppKey,
          'service': AppConsts.xsAppService,
          'secretKey': AppConsts.xsAppSecretKey,
          'userId': UserUtil.getUser()!.id.toString(),
        })),
      child: _TopicPicturePage(),
    );
  }
}
class _TopicPicturePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return BlocListener<TopicPictureBloc, TopicPictureState>(
      listener: (context, state) {
        if (state is RequestDataState) {
          context.read<TopicPictureBloc>().add(CurrentPageIndexChangeEvent(0));
        }
        if (state is XSVoiceTestState) {}
      },
      child: _topicPictureView(),
    );
  }
  Widget _topicPictureView() =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          builder: (context, state) {
        final bloc = BlocProvider.of<TopicPictureBloc>(context);
        return Container(
          color: Colors.white,
          child: Stack(
            children: [
              Column(
                children: [
                  PracticeHeaderWidget(
                    title: '${bloc.currentPage}/${bloc.entity?.topics?.length}',
                    onTap: () {
                      popPage(data: {
                        'currentStep': bloc.currentPage,
                        'courseLessonId': bloc.courseLessonId,
                        'isCompleted': bloc.isLastPage(),
                      });
                      // Navigator.pop(context);
                    },
                  ),
                  Expanded(
                    child: PageView.builder(
                        itemCount: bloc.entity?.topics?.length,
                        scrollDirection: Axis.horizontal,
                        controller: bloc.pageController,
                        onPageChanged: (int index) {
                          bloc.add(CurrentPageIndexChangeEvent(index));
                        },
                        itemBuilder: (BuildContext context, int index) {
                          CourseProcessTopics? topics =
                              bloc.entity?.topics![index];
                          if (topics?.type ==
                              TopicType.audioImageSelect.value) {
                            //听音选图
                            return _pageViewVoicePictureItemWidget(topics);
                          } else if (topics?.type ==
                              TopicType.audioCharSelect.value) {
                            //听音选字
                            return _pageViewVoiceWordItemWidget(topics);
                          } else if (topics?.type ==
                              TopicType.questionCharSelect.value) {
                            //看题选字
                            return _pageViewWordItemWidget(topics);
                          } else if (topics?.type ==
                              TopicType.questionImageSelect.value) {
                            //看题选图
                            return _pageViewItemWidget(topics);
                          } else {
                            //语音问答
                            return _voiceAnswerItem(topics);
                          }
                        }),
                  )
                ],
              ),
              Positioned(
                  left: 0,
                  right: 0,
                  bottom: 0,
                  child: Image.asset('bottom_grass'.assetPng))
            ],
          ),
        );
      });
  ///看题选图
  Widget _pageViewItemWidget(CourseProcessTopics? topics) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          builder: (context, state) {
        return SafeArea(
          child: Column(
            children: [
              Text(topics?.word ?? '',
                  softWrap: true,
                  style: TextStyle(
                      fontSize: 21.sp, color: const Color(0xFF333333))),
              26.verticalSpace,
              SizedBox(
                height: 143.h,
                width: 143.w * (topics?.topicAnswerList?.length ?? 0),
                child: ListView.builder(
                    scrollDirection: Axis.horizontal,
                    physics: const NeverScrollableScrollPhysics(),
                    itemCount: topics?.topicAnswerList?.length ?? 0,
                    itemBuilder: (context, index) {
                      return _decodeImageWidget(
                          index, topics?.topicAnswerList?[index]);
                    }),
              ),
            ],
          ),
        );
      });
  Widget _decodeImageWidget(
          int index, CourseProcessTopicsTopicAnswerList? answerLis) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          buildWhen: (_, s) => s is SelectItemChangeState,
          builder: (context, state) {
            final bloc = BlocProvider.of<TopicPictureBloc>(context);
            return Container(
              padding: EdgeInsets.symmetric(horizontal: 10.w),
              child: GestureDetector(
                onTap: () => bloc.add(SelectItemEvent(index)),
                child: Container(
                  padding: const EdgeInsets.all(4.5),
                  decoration: BoxDecoration(
                    color: bloc.selectItem == index
                        ? const Color(0xFF00B6F1)
                        : Colors.white,
                    borderRadius: BorderRadius.circular(15),
                  ),
                  height: 143.h,
                  width: 143.w,
                  child: Container(
                    decoration: BoxDecoration(
                        color: Colors.white,
                        borderRadius: BorderRadius.circular(15),
                        border: Border.all(
                            width: 1.0, color: const Color(0xFF140C10)),
                        image: DecorationImage(
                            fit: BoxFit.fitWidth,
                            image: NetworkImage(answerLis?.picUrl ?? ''))),
                  ),
                ),
              ),
            );
          });
  ///看题选字
  Widget _pageViewWordItemWidget(CourseProcessTopics? topics) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          builder: (context, state) {
        return SafeArea(
          child: Column(
            children: [
              Text(topics?.word ?? '',
                  softWrap: true,
                  style: TextStyle(
                      fontSize: 21.sp, color: const Color(0xFF333333))),
              26.verticalSpace,
              SizedBox(
                height: 143.h,
                width: 143.w * (topics?.topicAnswerList?.length ?? 0),
                child: ListView.builder(
                    scrollDirection: Axis.horizontal,
                    itemCount: topics?.topicAnswerList?.length ?? 0,
                    physics: const NeverScrollableScrollPhysics(),
                    itemBuilder: (context, index) {
                      return _decodeWordWidget(
                          index, topics?.topicAnswerList?[index]);
                    }),
              ),
            ],
          ),
        );
      });
  Widget _decodeWordWidget(
          int index, CourseProcessTopicsTopicAnswerList? answerLis) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          buildWhen: (_, s) => s is SelectItemChangeState,
          builder: (context, state) {
            final bloc = BlocProvider.of<TopicPictureBloc>(context);
            return Container(
              padding: EdgeInsets.symmetric(horizontal: 10.w),
              child: GestureDetector(
                onTap: () => bloc.add(SelectItemEvent(index)),
                child: Container(
                  width: 143.w,
                  height: 143.h,
                  padding: EdgeInsets.only(
                      left: 13.w, right: 13.w, top: 13.h, bottom: 13.h),
                  decoration: BoxDecoration(
                    color: Colors.white,
                    borderRadius: BorderRadius.circular(15),
                    border:
                        Border.all(width: 1.0, color: const Color(0xFF140C10)),
                  ),
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: [
                      Expanded(
                        child: Container(
                          alignment: Alignment.center,
                          child: Text(answerLis?.word ?? '',
                              style: TextStyle(
                                  fontSize: 20.sp,
                                  color: const Color(0xFF333333))),
                        ),
                      ),
                      Container(
                        height: 30.h,
                        width: double.infinity,
                        decoration: BoxDecoration(
                          color: bloc.selectItem == index
                              ? const Color(0xFF00B6F1)
                              : Colors.white,
                          borderRadius: BorderRadius.circular(15.r),
                          border: Border.all(
                              width: 1.5, color: const Color(0xFF140C10)),
                        ),
                        alignment: Alignment.center,
                        child: Image.asset('choose'.assetPng),
                      )
                    ],
                  ),
                ),
              ),
            );
          });
  ///听音选图
  Widget _pageViewVoicePictureItemWidget(CourseProcessTopics? topics) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          builder: (context, state) {
        final bloc = BlocProvider.of<TopicPictureBloc>(context);
        return SafeArea(
          child: Column(
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  GestureDetector(
                    onTap: () {
                      bloc.add(VoicePlayEvent());
                    },
                    child: Image.asset(
                      bloc.voicePlayState == VoicePlayState.playing
                          ? 'reade_answer'.assetGif
                          : 'voice'.assetPng,
                      height: 33.h,
                      width: 30.w,
                    ),
                  ),
                  10.horizontalSpace,
                  Text(topics?.word ?? '',
                      style: TextStyle(
                          fontSize: 20.sp, color: const Color(0xFF333333)))
                ],
              ),
              26.verticalSpace,
              SizedBox(
                height: 143.h,
                width: 163.w * (topics?.topicAnswerList?.length ?? 0),
                child: ListView.builder(
                    scrollDirection: Axis.horizontal,
                    physics: const NeverScrollableScrollPhysics(),
                    itemCount: topics?.topicAnswerList?.length ?? 0,
                    itemBuilder: (BuildContext context, int index) {
                      return _decodeVoiceImageWidget(
                          index, topics?.topicAnswerList?[index]);
                    }),
              )
            ],
          ),
        );
      });
  Widget _decodeVoiceImageWidget(
          int index, CourseProcessTopicsTopicAnswerList? answerList) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          buildWhen: (_, s) => s is SelectItemChangeState,
          builder: (context, state) {
            final bloc = BlocProvider.of<TopicPictureBloc>(context);
            return Container(
              padding: EdgeInsets.symmetric(horizontal: 10.w),
              child: GestureDetector(
                onTap: () => bloc.add(SelectItemEvent(index)),
                child: Container(
                  padding: const EdgeInsets.all(4.5),
                  decoration: BoxDecoration(
                    color: bloc.selectItem == index
                        ? const Color(0xFF00B6F1)
                        : Colors.white,
                    borderRadius: BorderRadius.circular(15),
                  ),
                  height: 143.h,
                  width: 143.w,
                  child: Container(
                    decoration: BoxDecoration(
                        color: Colors.white,
                        borderRadius: BorderRadius.circular(15),
                        border: Border.all(
                            width: 1.0, color: const Color(0xFF140C10)),
                        image: DecorationImage(
                            fit: BoxFit.fitWidth,
                            image: NetworkImage(answerList?.picUrl ?? ''))),
                  ),
                ),
              ),
            );
          });
  ///听音选字
  Widget _pageViewVoiceWordItemWidget(CourseProcessTopics? topics) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          builder: (context, state) {
        final bloc = BlocProvider.of<TopicPictureBloc>(context);
        return SafeArea(
          child: Column(
            children: [
              GestureDetector(
                  onTap: () {
                    bloc.add(VoicePlayEvent());
                  },
                  child: Image.asset(
                      bloc.voicePlayState == VoicePlayState.playing
                          ? 'reade_answer'.assetGif
                          : 'voice'.assetPng,
                      height: 33.h,
                      width: 30.w)),
              26.verticalSpace,
              SizedBox(
                width: 163.w * (topics?.topicAnswerList?.length ?? 0),
                height: 143.h,
                child: ListView.builder(
                    scrollDirection: Axis.horizontal,
                    itemCount: topics?.topicAnswerList?.length,
                    physics: const NeverScrollableScrollPhysics(),
                    itemBuilder: (BuildContext context, int index) {
                      return _decodeVoiceWordImageWidget(
                          index, topics!.topicAnswerList![index]);
                    }),
              ),
            ],
          ),
        );
      });
  Widget _decodeVoiceWordImageWidget(
          int index, CourseProcessTopicsTopicAnswerList answerList) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          buildWhen: (_, s) => s is SelectItemChangeState,
          builder: (context, state) {
            final bloc = BlocProvider.of<TopicPictureBloc>(context);
            return GestureDetector(
              onTap: () => bloc.add(SelectItemEvent(index)),
              child: Container(
                width: 163.w,
                height: 143.h,
                padding: EdgeInsets.symmetric(horizontal: 10.w),
                child: Container(
                  width: 143.w,
                  height: 143.h,
                  padding: EdgeInsets.only(
                      left: 13.w, right: 13.w, top: 13.h, bottom: 13.h),
                  decoration: BoxDecoration(
                    color: Colors.white,
                    borderRadius: BorderRadius.circular(15),
                    border:
                        Border.all(width: 1.0, color: const Color(0xFF140C10)),
                  ),
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: [
                      Expanded(
                        child: Container(
                          alignment: Alignment.center,
                          child: Text(answerList.word ?? '',
                              style: TextStyle(
                                  fontSize: 20.sp,
                                  color: const Color(0xFF333333))),
                        ),
                      ),
                      Container(
                        height: 30.h,
                        width: double.infinity,
                        decoration: BoxDecoration(
                          color: bloc.selectItem == index
                              ? const Color(0xFF00B6F1)
                              : Colors.white,
                          borderRadius: BorderRadius.circular(15.r),
                          border: Border.all(
                              width: 1.5, color: const Color(0xFF140C10)),
                        ),
                        alignment: Alignment.center,
                        child: Image.asset('choose'.assetPng),
                      )
                    ],
                  ),
                ),
              ),
            );
          });
  ///语音问答
  Widget _voiceAnswerItem(CourseProcessTopics? topics) =>
      BlocBuilder<TopicPictureBloc, TopicPictureState>(
          builder: (context, state) {
        final bloc = BlocProvider.of<TopicPictureBloc>(context);
        return Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            OwImageWidget(
              name: topics?.picUrl ?? '',
              height: 186.h,
              width: 186.w,
            ),
            160.horizontalSpace,
            Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                GestureDetector(
                  onTap: () {
                    if (bloc.isVoicing) {
                      showToast('正在录音,不能终止');
                      return;
                    }
                    bloc.add(VoicePlayEvent());
                  },
                  child: Row(
                    children: [
                      Image.asset(
                        bloc.voicePlayState == VoicePlayState.playing
                            ? 'reade_answer'.assetGif
                            : 'voice'.assetPng,
                        height: 52.h,
                        width: 46.w,
                      ),
                      10.horizontalSpace,
                      Text(topics?.word ?? '')
                    ],
                  ),
                ),
                70.verticalSpace,
                ThrottledGestureDetector(
                  throttleTime: 1000,
                  onTap: () {
                    if (bloc.voicePlayState == VoicePlayState.playing) {
                      showToast('正在播放音频,不能终止');
                      return;
                    }
                    if (bloc.isVoicing) {
                      bloc.add(XSVoiceStopEvent());
                      return;
                    }
                    if (topics?.type == TopicType.voiceQuestion.value ||
                        topics?.type == TopicType.voiceWord.value) {
                      bloc.add(XSVoiceStartEvent(topics?.keyWord ?? '', '0',
                          UserUtil.getUser()!.id.toString()));
                    } else {
                      bloc.add(XSVoiceStartEvent(topics?.word ?? '', '0',
                          UserUtil.getUser()!.id.toString()));
                    }
                  },
                  child: Image.asset(
                    bloc.isVoicing
                        ? 'micro_phone'.assetGif
                        : 'micro_phone'.assetPng,
                    height: 75.w,
                    width: 75.w,
                  ),
                )
              ],
            )
          ],
        );
      });
}