PiliPlus/lib/pages/live_area_detail/view.dart

import 'package:PiliPlus/common/widgets/button/icon_button.dart';
import 'package:PiliPlus/common/widgets/image/network_img_layer.dart';
import 'package:PiliPlus/common/widgets/scroll_physics.dart';
import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models/live/live_area_list/area_item.dart';
import 'package:PiliPlus/pages/live_area_detail/child/view.dart';
import 'package:PiliPlus/pages/live_area_detail/controller.dart';
import 'package:PiliPlus/pages/live_search/view.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

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

  final dynamic areaId;
  final dynamic parentAreaId;
  final String parentName;

  @override
  State<LiveAreaDetailPage> createState() => _LiveAreaDetailPageState();
}

class _LiveAreaDetailPageState extends State<LiveAreaDetailPage> {
  late final _controller = Get.put(
      LiveAreaDatailController(widget.areaId?.toString(), widget.parentAreaId));

  @override
  Widget build(BuildContext context) {
    final ThemeData theme = Theme.of(context);
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.parentName),
        actions: [
          IconButton(
            onPressed: () {
              Get.to(const LiveSearchPage());
            },
            icon: const Icon(Icons.search),
          ),
          const SizedBox(width: 16),
        ],
      ),
      body: SafeArea(
        top: false,
        bottom: false,
        child: Obx(() => _buildBody(theme, _controller.loadingState.value)),
      ),
    );
  }

  Widget _buildBody(
      ThemeData theme, LoadingState<List<AreaItem>?> loadingState) {
    return switch (loadingState) {
      Loading() => const SizedBox.shrink(),
      Success() => loadingState.response?.isNotEmpty == true
          ? DefaultTabController(
              initialIndex: _controller.initialIndex,
              length: loadingState.response!.length,
              child: Builder(
                builder: (context) {
                  return Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Row(
                        children: [
                          Expanded(
                            child: TabBar(
                              dividerHeight: 0,
                              dividerColor: Colors.transparent,
                              isScrollable: true,
                              tabAlignment: TabAlignment.start,
                              tabs: loadingState.response!
                                  .map((e) => Tab(text: e.name ?? ''))
                                  .toList(),
                            ),
                          ),
                          iconButton(
                            context: context,
                            icon: Icons.menu,
                            bgColor: Colors.transparent,
                            onPressed: () {
                              _showTags(context, theme, loadingState.response!);
                            },
                          ),
                        ],
                      ),
                      const Divider(height: 1),
                      Expanded(
                        child: tabBarView(
                          children: loadingState.response!
                              .map((e) => LiveAreaChildPage(
                                    areaId: e.id,
                                    parentAreaId: e.parentId,
                                  ))
                              .toList(),
                        ),
                      ),
                    ],
                  );
                },
              ),
            )
          : LiveAreaChildPage(
              areaId: widget.areaId,
              parentAreaId: widget.parentAreaId,
            ),
      Error() => LiveAreaChildPage(
          areaId: widget.areaId,
          parentAreaId: widget.parentAreaId,
        ),
    };
  }

  Widget _tagItem({
    required ThemeData theme,
    required AreaItem item,
    required VoidCallback onTap,
  }) {
    return GestureDetector(
      behavior: HitTestBehavior.opaque,
      onTap: onTap,
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          NetworkImgLayer(
            width: 45,
            height: 45,
            src: item.pic,
            type: 'emote',
          ),
          const SizedBox(height: 4),
          Text(
            item.name!,
            maxLines: 1,
            overflow: TextOverflow.ellipsis,
            style: const TextStyle(fontSize: 12),
          ),
        ],
      ),
    );
  }

  void _showTags(BuildContext context, ThemeData theme, List<AreaItem> list) {
    showModalBottomSheet(
      context: context,
      useSafeArea: true,
      isScrollControlled: true,
      builder: (_) {
        return DraggableScrollableSheet(
          minChildSize: 0,
          maxChildSize: 1,
          initialChildSize: 1,
          snap: true,
          expand: false,
          snapSizes: const [1],
          builder: (_, scrollController) {
            return NotificationListener<DraggableScrollableNotification>(
              onNotification: (notification) {
                if (notification.extent <= 1e-5) {
                  Get.back();
                }
                return false;
              },
              child: Column(
                children: [
                  AppBar(
                    centerTitle: true,
                    backgroundColor: Colors.transparent,
                    automaticallyImplyLeading: false,
                    title: Text(widget.parentName),
                    actions: [
                      IconButton(
                        onPressed: Get.back,
                        icon: const Icon(Icons.clear),
                      ),
                      const SizedBox(width: 12),
                    ],
                  ),
                  Expanded(
                    child: GridView.builder(
                      controller: scrollController,
                      padding: EdgeInsets.only(
                        top: 12,
                        bottom: MediaQuery.paddingOf(context).bottom + 80,
                      ),
                      itemCount: list.length,
                      gridDelegate:
                          const SliverGridDelegateWithMaxCrossAxisExtent(
                        maxCrossAxisExtent: 100,
                        mainAxisSpacing: 10,
                        crossAxisSpacing: 10,
                        mainAxisExtent: 80,
                      ),
                      itemBuilder: (_, index) {
                        return _tagItem(
                          theme: theme,
                          item: list[index],
                          onTap: () {
                            Get.back();
                            DefaultTabController.of(context).index = index;
                          },
                        );
                      },
                    ),
                  ),
                ],
              ),
            );
          },
        );
      },
    );
  }
}