Solian/lib/screens/contact.dart

import 'package:flutter/material.dart';
import 'package:flutter_animate/flutter_animate.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:get/get.dart';
import 'package:solian/models/channel.dart';
import 'package:solian/providers/auth.dart';
import 'package:solian/providers/content/channel.dart';
import 'package:solian/router.dart';
import 'package:solian/screens/account/notification.dart';
import 'package:solian/theme.dart';
import 'package:solian/widgets/account/account_avatar.dart';
import 'package:solian/widgets/account/signin_required_overlay.dart';

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

  @override
  State<ContactScreen> createState() => _ContactScreenState();
}

class _ContactScreenState extends State<ContactScreen> {
  bool _isBusy = true;
  int? _accountId;

  final List<Channel> _channels = List.empty(growable: true);

  getProfile() async {
    final AuthProvider auth = Get.find();
    final prof = await auth.getProfile();
    _accountId = prof.body['id'];
  }

  getChannels() async {
    setState(() => _isBusy = true);

    final ChannelProvider provider = Get.find();
    final resp = await provider.listAvailableChannel();

    setState(() {
      _channels.clear();
      _channels.addAll(
        resp.body.map((e) => Channel.fromJson(e)).toList().cast<Channel>(),
      );
    });

    setState(() => _isBusy = false);
  }

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

    getProfile();
    getChannels();
  }

  @override
  Widget build(BuildContext context) {
    final AuthProvider auth = Get.find();

    return Material(
      color: Theme.of(context).colorScheme.surface,
      child: FutureBuilder(
        future: auth.isAuthorized,
        builder: (context, snapshot) {
          if (!snapshot.hasData) {
            return const Center(
              child: CircularProgressIndicator(),
            );
          } else if (snapshot.data == false) {
            return SigninRequiredOverlay(
              onSignedIn: () {
                getChannels();
              },
            );
          }

          return SafeArea(
            child: NestedScrollView(
              headerSliverBuilder: (context, innerBoxIsScrolled) {
                return [
                  SliverOverlapAbsorber(
                    handle: NestedScrollView.sliverOverlapAbsorberHandleFor(
                        context),
                    sliver: SliverAppBar(
                      title: Text('contact'.tr),
                      centerTitle: false,
                      titleSpacing:
                          SolianTheme.isLargeScreen(context) ? null : 24,
                      forceElevated: innerBoxIsScrolled,
                      actions: [
                        const NotificationButton(),
                        PopupMenuButton(
                          icon: const Icon(Icons.add_circle),
                          itemBuilder: (BuildContext context) => [
                            PopupMenuItem(
                              child: ListTile(
                                title: Text('channelOrganizeCommon'.tr),
                                leading: const Icon(Icons.tag),
                                contentPadding:
                                    const EdgeInsets.symmetric(horizontal: 8),
                              ),
                              onTap: () {
                                AppRouter.instance
                                    .pushNamed('channelOrganizing')
                                    .then(
                                  (value) {
                                    if (value != null) getChannels();
                                  },
                                );
                              },
                            ),
                            PopupMenuItem(
                              child: ListTile(
                                title: Text('channelOrganizeDirect'.tr),
                                leading: const FaIcon(
                                  FontAwesomeIcons.userGroup,
                                  size: 16,
                                ),
                                contentPadding:
                                    const EdgeInsets.symmetric(horizontal: 8),
                              ),
                              onTap: () {
                                final ChannelProvider provider = Get.find();
                                provider
                                    .createDirectChannel(context, 'global')
                                    .then((resp) {
                                  if (resp != null) {
                                    getChannels();
                                  }
                                });
                              },
                            ),
                          ],
                        ),
                        SizedBox(
                          width: SolianTheme.isLargeScreen(context) ? 8 : 16,
                        ),
                      ],
                    ),
                  ),
                ];
              },
              body: MediaQuery.removePadding(
                removeTop: true,
                context: context,
                child: Column(
                  children: [
                    if (_isBusy)
                      const LinearProgressIndicator().animate().scaleX(),
                    Expanded(
                      child: RefreshIndicator(
                        onRefresh: () => getChannels(),
                        child: ListView.builder(
                          itemCount: _channels.length,
                          itemBuilder: (context, index) {
                            final element = _channels[index];
                            return buildItem(element);
                          },
                        ),
                      ),
                    ),
                  ],
                ),
              ),
            ),
          );
        },
      ),
    );
  }

  Widget buildItem(Channel element) {
    if (element.type == 1) {
      final otherside = element.members!
          .where((e) => e.account.externalId != _accountId)
          .first;

      return ListTile(
        leading: AccountAvatar(
          content: otherside.account.avatar,
          bgColor: Colors.indigo,
          feColor: Colors.white,
        ),
        contentPadding: const EdgeInsets.symmetric(horizontal: 24),
        title: Text(otherside.account.name),
        subtitle: Text(
          'channelDirectDescription'
              .trParams({'username': otherside.account.name}),
        ),
        onTap: () {
          AppRouter.instance.pushNamed(
            'channelChat',
            pathParameters: {'alias': element.alias},
            queryParameters: {
              if (element.realmId != null) 'realm': element.realm!.alias,
            },
          );
        },
      );
    }

    return ListTile(
      leading: const CircleAvatar(
        backgroundColor: Colors.indigo,
        child: FaIcon(
          FontAwesomeIcons.hashtag,
          color: Colors.white,
          size: 16,
        ),
      ),
      contentPadding: const EdgeInsets.symmetric(horizontal: 24),
      title: Text(element.name),
      subtitle: Text(element.description),
      onTap: () {
        AppRouter.instance.pushNamed(
          'channelChat',
          pathParameters: {'alias': element.alias},
          queryParameters: {
            if (element.realmId != null) 'realm': element.realm!.alias,
          },
        );
      },
    );
  }
}