PiliPlus/lib/pages/fav/video/view.dart

import 'package:PiliPlus/common/skeleton/video_card_h.dart';
import 'package:PiliPlus/common/widgets/loading_widget/http_error.dart';
import 'package:PiliPlus/common/widgets/refresh_indicator.dart';
import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models_new/fav/fav_folder/list.dart';
import 'package:PiliPlus/pages/fav/video/controller.dart';
import 'package:PiliPlus/pages/fav/video/widgets/item.dart';
import 'package:PiliPlus/utils/grid.dart';
import 'package:PiliPlus/utils/utils.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class FavVideoPage extends StatefulWidget {
  const FavVideoPage({super.key});

  @override
  State<FavVideoPage> createState() => _FavVideoPageState();
}

class _FavVideoPageState extends State<FavVideoPage>
    with AutomaticKeepAliveClientMixin {
  final FavController _favController = Get.find<FavController>();

  @override
  bool get wantKeepAlive => true;

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return refreshIndicator(
      onRefresh: _favController.onRefresh,
      child: CustomScrollView(
        controller: _favController.scrollController,
        physics: const AlwaysScrollableScrollPhysics(),
        slivers: [
          SliverPadding(
            padding: EdgeInsets.only(
              top: 7,
              bottom: 80 + MediaQuery.paddingOf(context).bottom,
            ),
            sliver: Obx(
              () => _buildBody(_favController.loadingState.value),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildBody(LoadingState<List<FavFolderInfo>?> loadingState) {
    return switch (loadingState) {
      Loading() => SliverGrid(
        gridDelegate: Grid.videoCardHDelegate(context),
        delegate: SliverChildBuilderDelegate(
          (BuildContext context, int index) {
            return const VideoCardHSkeleton();
          },
          childCount: 10,
        ),
      ),
      Success(:var response) =>
        response?.isNotEmpty == true
            ? SliverGrid(
                gridDelegate: Grid.videoCardHDelegate(context),
                delegate: SliverChildBuilderDelegate(
                  childCount: response!.length,
                  (BuildContext context, int index) {
                    if (index == response.length - 1) {
                      _favController.onLoadMore();
                    }
                    final item = response[index];
                    String heroTag = Utils.makeHeroTag(item.fid);
                    return FavVideoItem(
                      heroTag: heroTag,
                      item: item,
                      onTap: () async {
                        var res = await Get.toNamed(
                          '/favDetail',
                          arguments: item,
                          parameters: {
                            'heroTag': heroTag,
                            'mediaId': item.id.toString(),
                          },
                        );
                        if (res == true) {
                          _favController.loadingState
                            ..value.data!.removeAt(index)
                            ..refresh();
                        }
                      },
                    );
                  },
                ),
              )
            : HttpError(
                onReload: _favController.onReload,
              ),
      Error(:var errMsg) => HttpError(
        errMsg: errMsg,
        onReload: _favController.onReload,
      ),
    };
  }
}