GiteaClient/lib/widget/search_list.dart

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:gitea_client/cubit/search_bloc.dart';

import '../model/repository.dart';
import '../model/repouser.dart';
import '../model/user.dart';

class SearchList extends StatefulWidget {
  final SavedUser user;

  const SearchList({Key? key, required this.user}) : super(key: key);
  @override
  _SearchListState createState() => _SearchListState();
}

class _SearchListState extends State<SearchList> {
  final _scrollController = ScrollController();

  @override
  void initState() {
    super.initState();
    _scrollController.addListener(_onScroll);
  }

  @override
  Widget build(BuildContext context) {
    return BlocBuilder<SearchBloc, SearchState>(
      builder: (context, state) {
        switch (state.status) {
          case SearchStatus.failure:
            String error_message = state.error_message!;
            return Center(child: Text('failed to fetch $error_message'));
          case SearchStatus.success:
            if (state.repos.isEmpty) {
              return const Center(child: Text('no repos'));
            }
            if (state.repos.length < 5) {
              context.read<SearchBloc>().add(SearchFetchedEvent());
            }
            return ListView.builder(
              itemBuilder: (BuildContext context, int index) {
                return index >= state.repos.length
                    ? BottomLoader()
                    : RepoListItem(repo: state.repos[index],user: widget.user,);
              },
              itemCount: state.hasReachedMax
                  ? state.repos.length
                  : state.repos.length + 1,
              controller: _scrollController,
            );
          default:
            return const Center(child: CircularProgressIndicator());
        }
      },
    );
  }

  @override
  void dispose() {
    _scrollController
      ..removeListener(_onScroll)
      ..dispose();
    super.dispose();
  }

  void _onScroll() {
    if (_isBottom) context.read<SearchBloc>().add(SearchFetchedEvent());
  }

  bool get _isBottom {
    if (!_scrollController.hasClients) return false;
    final maxScroll = _scrollController.position.maxScrollExtent;
    final currentScroll = _scrollController.offset;
    return currentScroll >= (maxScroll * 0.9);
  }
}

class BottomLoader extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return const Center(
      child: SizedBox(
        height: 24,
        width: 24,
        child: CircularProgressIndicator(strokeWidth: 1.5),
      ),
    );
  }
}

class RepoListItem extends StatelessWidget {
  const RepoListItem({Key? key, required this.repo, required this.user}) : super(key: key);

  final Repository repo;
  final SavedUser user;
  @override
  Widget build(BuildContext context) {
    final textTheme = Theme.of(context).textTheme;

    return Material(
      child: Container(
        color: (repo.private!) ? Colors.yellow[100] : Colors.white,
        child: ListTile(
          leading: (repo.private!)
              ? const Icon(Icons.lock)
              : (repo.mirror!)
              ? const Icon(Icons.amp_stories_outlined)
              : (repo.archived!)
              ? const Icon(Icons.archive)
              : const Icon(Icons.book),
          title: Text('${repo.owner.username}/${repo.name}'),
          isThreeLine: true,
          subtitle: Column(
            mainAxisAlignment: MainAxisAlignment.start,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              (repo.description != null)
                  ? Text(repo.description!)
                  : Container(),
              (repo.mirror!)
                  ? Text("Mirror of ${repo.originalUrl!}")
                  : Container()
            ],
          ),
          dense: true,
          onTap: () => {
            Navigator.pushNamed(context, "/repopage",arguments: RepoUser(repo,user))
          },
        ),
      ),
    );
  }
}