PiliPlus/lib/pages/live_area_detail/child/view.dart

import 'package:PiliPlus/common/constants.dart';
import 'package:PiliPlus/common/skeleton/video_card_v.dart';
import 'package:PiliPlus/common/widgets/loading_widget/http_error.dart';
import 'package:PiliPlus/common/widgets/refresh_indicator.dart';
import 'package:PiliPlus/common/widgets/self_sized_horizontal_list.dart';
import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models/live/live_feed_index/card_data_list_item.dart';
import 'package:PiliPlus/pages/live/widgets/live_item_app.dart';
import 'package:PiliPlus/pages/live_area_detail/child/controller.dart';
import 'package:PiliPlus/pages/search/widgets/search_text.dart';
import 'package:PiliPlus/utils/grid.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class LiveAreaChildPage extends StatefulWidget {
  const LiveAreaChildPage({
    super.key,
    required this.areaId,
    required this.parentAreaId,
  });

  final dynamic areaId;
  final dynamic parentAreaId;

  @override
  State<LiveAreaChildPage> createState() => _LiveAreaChildPageState();
}

class _LiveAreaChildPageState extends State<LiveAreaChildPage>
    with AutomaticKeepAliveClientMixin {
  late final _controller = Get.put(
    LiveAreaChildController(widget.areaId, widget.parentAreaId),
    tag: '${widget.areaId}${widget.parentAreaId}',
  );

  @override
  Widget build(BuildContext context) {
    super.build(context);
    final ThemeData theme = Theme.of(context);
    return refreshIndicator(
      onRefresh: _controller.onRefresh,
      child: CustomScrollView(
        slivers: [
          SliverPadding(
            padding: EdgeInsets.only(
              left: StyleString.safeSpace,
              right: StyleString.safeSpace,
              top: StyleString.safeSpace,
              bottom: MediaQuery.paddingOf(context).bottom + 80,
            ),
            sliver:
                Obx(() => _buildBody(theme, _controller.loadingState.value)),
          ),
        ],
      ),
    );
  }

  Widget _buildBody(
      ThemeData theme, LoadingState<List<CardLiveItem>?> loadingState) {
    return switch (loadingState) {
      Loading() => SliverGrid(
          gridDelegate: SliverGridDelegateWithExtentAndRatio(
            mainAxisSpacing: StyleString.cardSpace,
            crossAxisSpacing: StyleString.cardSpace,
            maxCrossAxisExtent: Grid.smallCardWidth,
            childAspectRatio: StyleString.aspectRatio,
            mainAxisExtent: MediaQuery.textScalerOf(context).scale(90),
          ),
          delegate: SliverChildBuilderDelegate(
            (context, index) {
              return const VideoCardVSkeleton();
            },
            childCount: 10,
          ),
        ),
      Success() => SliverMainAxisGroup(
          slivers: [
            if (_controller.newTags?.isNotEmpty == true)
              SliverToBoxAdapter(
                child: Padding(
                  padding: const EdgeInsets.only(bottom: 12),
                  child: SelfSizedHorizontalList(
                    gapSize: 12,
                    childBuilder: (index) {
                      late final item = _controller.newTags![index];
                      return Obx(
                        () => SearchText(
                          fontSize: 14,
                          padding: const EdgeInsets.symmetric(
                            horizontal: 8,
                            vertical: 3,
                          ),
                          text: '${item.name}',
                          bgColor: index == _controller.tagIndex.value
                              ? theme.colorScheme.secondaryContainer
                              : Colors.transparent,
                          textColor: index == _controller.tagIndex.value
                              ? theme.colorScheme.onSecondaryContainer
                              : null,
                          onTap: (value) {
                            _controller.onSelectTag(
                              index,
                              item.sortType,
                            );
                          },
                        ),
                      );
                    },
                    itemCount: _controller.newTags!.length,
                  ),
                ),
              ),
            loadingState.response?.isNotEmpty == true
                ? SliverGrid(
                    gridDelegate: SliverGridDelegateWithExtentAndRatio(
                      mainAxisSpacing: StyleString.cardSpace,
                      crossAxisSpacing: StyleString.cardSpace,
                      maxCrossAxisExtent: Grid.smallCardWidth,
                      childAspectRatio: StyleString.aspectRatio,
                      mainAxisExtent:
                          MediaQuery.textScalerOf(context).scale(90),
                    ),
                    delegate: SliverChildBuilderDelegate(
                      (context, index) {
                        if (index == loadingState.response!.length - 1) {
                          _controller.onLoadMore();
                        }
                        return LiveCardVApp(
                            item: loadingState.response![index]);
                      },
                      childCount: loadingState.response!.length,
                    ),
                  )
                : HttpError(
                    onReload: _controller.onReload,
                  ),
          ],
        ),
      Error() => HttpError(
          errMsg: loadingState.errMsg,
          onReload: _controller.onReload,
        ),
    };
  }

  @override
  bool get wantKeepAlive => true;
}