SimpleCloudNotifier/flutter/lib/pages/client_list/client_list.dart

import 'package:flutter/material.dart';
import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
import 'package:provider/provider.dart';
import 'package:simplecloudnotifier/api/api_client.dart';
import 'package:simplecloudnotifier/components/layout/scaffold.dart';
import 'package:simplecloudnotifier/models/client.dart';
import 'package:simplecloudnotifier/state/application_log.dart';
import 'package:simplecloudnotifier/state/app_auth.dart';
import 'package:simplecloudnotifier/pages/client_list/client_list_item.dart';

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

  @override
  State<ClientListPage> createState() => _ClientListPageState();
}

class _ClientListPageState extends State<ClientListPage> {
  final PagingController<int, Client> _pagingController = PagingController.fromValue(PagingState(nextPageKey: null, itemList: [], error: null), firstPageKey: 0);

  @override
  void initState() {
    super.initState();

    _pagingController.addPageRequestListener(_fetchPage);

    _pagingController.refresh();
  }

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
  }

  @override
  void dispose() {
    ApplicationLog.debug('ClientListPage::dispose');
    _pagingController.dispose();
    super.dispose();
  }

  Future<void> _fetchPage(int pageKey) async {
    final acc = Provider.of<AppAuth>(context, listen: false);

    ApplicationLog.debug('Start ClientListPage::_pagingController::_fetchPage [ ${pageKey} ]');

    if (!acc.isAuth()) {
      _pagingController.error = 'Not logged in';
      return;
    }

    try {
      final items = (await APIClient.getClientList(acc)).toList();

      items.sort((a, b) => -1 * a.timestampCreated.compareTo(b.timestampCreated));

      _pagingController.value = PagingState(nextPageKey: null, itemList: items, error: null);
    } catch (exc, trace) {
      _pagingController.error = exc.toString();
      ApplicationLog.error('Failed to list clients: ' + exc.toString(), trace: trace);
    }
  }

  @override
  Widget build(BuildContext context) {
    return SCNScaffold(
      title: "Clients",
      showSearch: false,
      showShare: false,
      child: Padding(
        padding: EdgeInsets.fromLTRB(8, 4, 8, 4),
        child: RefreshIndicator(
          onRefresh: () => Future.sync(
            () => _pagingController.refresh(),
          ),
          child: PagedListView<int, Client>(
            pagingController: _pagingController,
            builderDelegate: PagedChildBuilderDelegate<Client>(
              itemBuilder: (context, item, index) => ClientListItem(item: item),
            ),
          ),
        ),
      ),
    );
  }
}