import 'package:PiliPlus/common/widgets/flutter/refresh_indicator.dart';
import 'package:PiliPlus/common/widgets/loading_widget/http_error.dart';
import 'package:PiliPlus/common/widgets/video_card/video_card_h.dart';
import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models/common/member/search_type.dart';
import 'package:PiliPlus/pages/dynamics/widgets/dynamic_panel.dart';
import 'package:PiliPlus/pages/member_search/child/controller.dart';
import 'package:PiliPlus/utils/global_data.dart';
import 'package:PiliPlus/utils/grid.dart';
import 'package:PiliPlus/utils/waterfall.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:waterfall_flow/waterfall_flow.dart'
    hide SliverWaterfallFlowDelegateWithMaxCrossAxisExtent;

class MemberSearchChildPage extends StatefulWidget {
  const MemberSearchChildPage({
    super.key,
    required this.controller,
    required this.searchType,
  });

  final MemberSearchChildController controller;
  final MemberSearchType searchType;

  @override
  State<MemberSearchChildPage> createState() => _MemberSearchChildPageState();
}

class _MemberSearchChildPageState extends State<MemberSearchChildPage>
    with AutomaticKeepAliveClientMixin, DynMixin, GridMixin {
  MemberSearchChildController get _controller => widget.controller;

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return refreshIndicator(
      onRefresh: _controller.onRefresh,
      child: CustomScrollView(
        controller: _controller.scrollController,
        physics: const AlwaysScrollableScrollPhysics(),
        slivers: [
          SliverPadding(
            padding: EdgeInsets.only(
              top: widget.searchType == MemberSearchType.archive ? 7 : 0,
              bottom: MediaQuery.viewPaddingOf(context).bottom + 100,
            ),
            sliver: switch (widget.searchType) {
              MemberSearchType.archive => Obx(
                () => _buildBody(_controller.loadingState.value),
              ),
              MemberSearchType.dynamic => buildPage(
                Obx(() => _buildBody(_controller.loadingState.value)),
              ),
            },
          ),
        ],
      ),
    );
  }

  Widget get _buildLoading {
    return switch (widget.searchType) {
      MemberSearchType.archive => gridSkeleton,
      MemberSearchType.dynamic => dynSkeleton,
    };
  }

  Widget _buildBody(LoadingState<List?> loadingState) {
    return switch (loadingState) {
      Loading() => _buildLoading,
      Success(:final response) =>
        response != null && response.isNotEmpty
            ? Builder(
                builder: (context) {
                  return switch (widget.searchType) {
                    MemberSearchType.archive => SliverGrid.builder(
                      gridDelegate: gridDelegate,
                      itemBuilder: (context, index) {
                        if (index == response.length - 1) {
                          _controller.onLoadMore();
                        }
                        return VideoCardH(
                          videoItem: response[index],
                        );
                      },
                      itemCount: response.length,
                    ),
                    MemberSearchType.dynamic =>
                      GlobalData().dynamicsWaterfallFlow
                          ? SliverWaterfallFlow(
                              gridDelegate: dynGridDelegate,
                              delegate: SliverChildBuilderDelegate(
                                (_, index) {
                                  if (index == response.length - 1) {
                                    _controller.onLoadMore();
                                  }
                                  return DynamicPanel(
                                    item: response[index],
                                    maxWidth: maxWidth,
                                  );
                                },
                                childCount: response.length,
                              ),
                            )
                          : SliverList.builder(
                              itemBuilder: (context, index) {
                                if (index == response.length - 1) {
                                  _controller.onLoadMore();
                                }
                                return DynamicPanel(
                                  item: response[index],
                                  maxWidth: maxWidth,
                                );
                              },
                              itemCount: response.length,
                            ),
                  };
                },
              )
            : HttpError(onReload: _controller.onReload),
      Error(:final errMsg) => HttpError(
        errMsg: errMsg,
        onReload: _controller.onReload,
      ),
    };
  }

  @override
  bool get wantKeepAlive => true;
}