PiliPlus/lib/pages/member_upower_rank/view.dart

import 'package:PiliPlus/common/widgets/image/network_img_layer.dart';
import 'package:PiliPlus/common/widgets/keep_alive_wrapper.dart';
import 'package:PiliPlus/common/widgets/loading_widget/http_error.dart';
import 'package:PiliPlus/common/widgets/refresh_indicator.dart';
import 'package:PiliPlus/common/widgets/scroll_physics.dart';
import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models/common/image_type.dart';
import 'package:PiliPlus/models_new/upower_rank/rank_info.dart';
import 'package:PiliPlus/pages/member_upower_rank/controller.dart';
import 'package:PiliPlus/utils/utils.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class UpowerRankPage extends StatefulWidget {
  const UpowerRankPage({super.key, this.upMid, this.tag, this.privilegeType});

  final String? upMid;
  final String? tag;
  final int? privilegeType;

  @override
  State<UpowerRankPage> createState() => _UpowerRankPageState();
}

class _UpowerRankPageState extends State<UpowerRankPage>
    with AutomaticKeepAliveClientMixin {
  late final _upMid = Get.parameters['mid']!;
  late final String _tag;
  late final UpowerRankController _controller;

  @override
  void initState() {
    super.initState();
    _tag = widget.privilegeType == null
        ? Utils.generateRandomString(8)
        : '${widget.tag}${widget.privilegeType}';
    _controller = Get.put(
      UpowerRankController(
        privilegeType: widget.privilegeType,
        upMid: widget.upMid ?? _upMid,
      ),
      tag: _tag,
    );
  }

  @override
  Widget build(BuildContext context) {
    super.build(context);
    final theme = Theme.of(context);
    final child = refreshIndicator(
      onRefresh: _controller.onRefresh,
      child: CustomScrollView(
        controller: _controller.scrollController,
        physics: const AlwaysScrollableScrollPhysics(),
        slivers: [
          SliverPadding(
            padding: EdgeInsets.only(
              bottom: MediaQuery.paddingOf(context).bottom + 80,
            ),
            sliver:
                Obx(() => _bilidBody(theme, _controller.loadingState.value)),
          ),
        ],
      ),
    );
    if (widget.privilegeType == null) {
      return Scaffold(
        appBar: AppBar(
          title: Obx(() => _controller.name.value == null
              ? const SizedBox.shrink()
              : Text(
                  '${_controller.name.value} 充电排行榜${_controller.memberTotal == 0 ? '' : '(${_controller.memberTotal})'}')),
        ),
        body: SafeArea(
          top: false,
          bottom: false,
          child: Center(
            child: ConstrainedBox(
              constraints: const BoxConstraints(maxWidth: 625),
              child: Obx(
                () => _controller.tabs.value != null
                    ? DefaultTabController(
                        length: _controller.tabs.value!.length,
                        child: Builder(
                          builder: (context) {
                            return Column(
                              children: [
                                TabBar(
                                  isScrollable: true,
                                  tabAlignment: TabAlignment.start,
                                  tabs: _controller.tabs.value!
                                      .map((e) => Tab(
                                          text:
                                              '${e.name!}(${e.memberTotal ?? 0})'))
                                      .toList(),
                                  onTap: (index) {
                                    if (!DefaultTabController.of(context)
                                        .indexIsChanging) {
                                      try {
                                        if (index == 0) {
                                          _controller.animateToTop();
                                        } else {
                                          Get.find<UpowerRankController>(
                                                  tag:
                                                      '$_tag${_controller.tabs.value![index].privilegeType}')
                                              .animateToTop();
                                        }
                                      } catch (_) {}
                                    }
                                  },
                                ),
                                Expanded(
                                  child: tabBarView(
                                    children: [
                                      KeepAliveWrapper(
                                          builder: (context) => child),
                                      ..._controller.tabs.value!
                                          .sublist(1)
                                          .map((e) => UpowerRankPage(
                                                upMid: _upMid,
                                                tag: _tag,
                                                privilegeType: e.privilegeType,
                                              ))
                                    ],
                                  ),
                                ),
                              ],
                            );
                          },
                        ),
                      )
                    : child,
              ),
            ),
          ),
        ),
      );
    } else {
      return child;
    }
  }

  Widget _bilidBody(
      ThemeData theme, LoadingState<List<UpowerRankInfo>?> loadingState) {
    late final width = MediaQuery.textScalerOf(context).scale(32);
    return switch (loadingState) {
      Loading() => const SliverToBoxAdapter(
          child: SizedBox(
            height: 125,
            child: Center(
              child: CircularProgressIndicator(),
            ),
          ),
        ),
      Success<List<UpowerRankInfo>?>(:var response) =>
        response?.isNotEmpty == true
            ? SliverList.builder(
                itemCount: response!.length,
                itemBuilder: (context, index) {
                  if (index == response.length - 1) {
                    _controller.onLoadMore();
                  }
                  final item = response[index];
                  return Material(
                    type: MaterialType.transparency,
                    child: ListTile(
                      onTap: () => Get.toNamed('/member?mid=${item.mid}'),
                      leading: SizedBox(
                        width: width,
                        child: Center(
                          child: Text(
                            (index + 1).toString(),
                            style: TextStyle(
                              fontSize: 16,
                              fontStyle: FontStyle.italic,
                              fontWeight: FontWeight.bold,
                              color: switch (index) {
                                0 => const Color(0xFFfdad13),
                                1 => const Color(0xFF8aace1),
                                2 => const Color(0xFFdfa777),
                                _ => theme.colorScheme.outline,
                              },
                            ),
                          ),
                        ),
                      ),
                      title: Row(
                        spacing: 12,
                        children: [
                          NetworkImgLayer(
                            width: 38,
                            height: 38,
                            src: item.avatar,
                            type: ImageType.avatar,
                          ),
                          Text(
                            item.nickname!,
                            style: const TextStyle(fontSize: 14),
                          ),
                        ],
                      ),
                      trailing: Text.rich(
                        TextSpan(
                          children: [
                            TextSpan(
                              text: item.day!.toString(),
                              style: const TextStyle(
                                fontSize: 14,
                                fontWeight: FontWeight.bold,
                              ),
                            ),
                            const TextSpan(
                              text: ' 天',
                              style: TextStyle(fontSize: 13),
                            ),
                          ],
                        ),
                      ),
                    ),
                  );
                },
              )
            : HttpError(onReload: _controller.onReload),
      Error(:var errMsg) => HttpError(
          errMsg: errMsg,
          onReload: _controller.onReload,
        ),
    };
  }

  @override
  bool get wantKeepAlive => widget.privilegeType != null;
}