import 'package:adaptive_page_layout/adaptive_page_layout.dart';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:fluffychat/views/chat_list.dart';
import 'package:fluffychat/widgets/connection_status_header.dart';
import 'package:fluffychat/widgets/list_items/chat_list_item.dart';
import 'package:flutter/cupertino.dart';
import 'package:fluffychat/config/app_config.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import '../../widgets/matrix.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';

class ChatListUI extends StatelessWidget {
  final ChatListController controller;

  const ChatListUI(this.controller, {Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return StreamBuilder<Object>(
        stream: Matrix.of(context).onShareContentChanged.stream,
        builder: (_, __) {
          final selectMode = Matrix.of(context).shareContent != null
              ? SelectMode.share
              : controller.selectedRoomIds.isEmpty
                  ? SelectMode.normal
                  : SelectMode.select;
          return Scaffold(
            appBar: AppBar(
              elevation:
                  AdaptivePageLayout.of(context).columnMode(context) ? 1 : null,
              leading: selectMode == SelectMode.normal
                  ? null
                  : IconButton(
                      tooltip: L10n.of(context).cancel,
                      icon: Icon(Icons.close_outlined),
                      onPressed: controller.cancelAction,
                    ),
              centerTitle: false,
              actions: selectMode == SelectMode.share
                  ? null
                  : selectMode == SelectMode.select
                      ? [
                          if (controller.selectedRoomIds.length == 1)
                            IconButton(
                              tooltip: L10n.of(context).toggleUnread,
                              icon: Icon(Matrix.of(context)
                                      .client
                                      .getRoomById(
                                          controller.selectedRoomIds.single)
                                      .isUnread
                                  ? Icons.mark_chat_read_outlined
                                  : Icons.mark_chat_unread_outlined),
                              onPressed: controller.toggleUnread,
                            ),
                          if (controller.selectedRoomIds.length == 1)
                            IconButton(
                              tooltip: L10n.of(context).toggleFavorite,
                              icon: Icon(Icons.push_pin_outlined),
                              onPressed: controller.toggleFavouriteRoom,
                            ),
                          if (controller.selectedRoomIds.length == 1)
                            IconButton(
                              icon: Icon(Matrix.of(context)
                                          .client
                                          .getRoomById(
                                              controller.selectedRoomIds.single)
                                          .pushRuleState ==
                                      PushRuleState.notify
                                  ? Icons.notifications_off_outlined
                                  : Icons.notifications_outlined),
                              tooltip: L10n.of(context).toggleMuted,
                              onPressed: controller.toggleMuted,
                            ),
                          IconButton(
                            icon: Icon(Icons.archive_outlined),
                            tooltip: L10n.of(context).archive,
                            onPressed: controller.archiveAction,
                          ),
                        ]
                      : [
                          IconButton(
                            icon: Icon(Icons.search_outlined),
                            tooltip: L10n.of(context).search,
                            onPressed: () => AdaptivePageLayout.of(context)
                                .pushNamed('/search'),
                          ),
                          PopupMenuButton<PopupMenuAction>(
                            onSelected: controller.onPopupMenuSelect,
                            itemBuilder: (_) => [
                              PopupMenuItem(
                                value: PopupMenuAction.setStatus,
                                child: Row(
                                  mainAxisSize: MainAxisSize.min,
                                  children: [
                                    Icon(Icons.edit_outlined),
                                    SizedBox(width: 12),
                                    Text(L10n.of(context).setStatus),
                                  ],
                                ),
                              ),
                              PopupMenuItem(
                                value: PopupMenuAction.newGroup,
                                child: Row(
                                  mainAxisSize: MainAxisSize.min,
                                  children: [
                                    Icon(Icons.group_add_outlined),
                                    SizedBox(width: 12),
                                    Text(L10n.of(context).createNewGroup),
                                  ],
                                ),
                              ),
                              PopupMenuItem(
                                value: PopupMenuAction.invite,
                                child: Row(
                                  mainAxisSize: MainAxisSize.min,
                                  children: [
                                    Icon(Icons.share_outlined),
                                    SizedBox(width: 12),
                                    Text(L10n.of(context).inviteContact),
                                  ],
                                ),
                              ),
                              PopupMenuItem(
                                value: PopupMenuAction.archive,
                                child: Row(
                                  mainAxisSize: MainAxisSize.min,
                                  children: [
                                    Icon(Icons.archive_outlined),
                                    SizedBox(width: 12),
                                    Text(L10n.of(context).archive),
                                  ],
                                ),
                              ),
                              PopupMenuItem(
                                value: PopupMenuAction.settings,
                                child: Row(
                                  mainAxisSize: MainAxisSize.min,
                                  children: [
                                    Icon(Icons.settings_outlined),
                                    SizedBox(width: 12),
                                    Text(L10n.of(context).settings),
                                  ],
                                ),
                              ),
                            ],
                          ),
                        ],
              title: Text(selectMode == SelectMode.share
                  ? L10n.of(context).share
                  : selectMode == SelectMode.select
                      ? L10n.of(context).numberSelected(
                          controller.selectedRoomIds.length.toString())
                      : AppConfig.applicationName),
            ),
            body: Column(children: [
              ConnectionStatusHeader(),
              Expanded(
                child: StreamBuilder(
                    stream: Matrix.of(context)
                        .client
                        .onSync
                        .stream
                        .where((s) => s.hasRoomUpdate),
                    builder: (context, snapshot) {
                      return FutureBuilder<void>(
                        future: controller.waitForFirstSync(),
                        builder: (BuildContext context, snapshot) {
                          if (snapshot.hasData) {
                            final rooms = List<Room>.from(
                                Matrix.of(context).client.rooms);
                            rooms.removeWhere((room) => room.lastEvent == null);
                            if (rooms.isEmpty) {
                              return Column(
                                mainAxisAlignment: MainAxisAlignment.center,
                                mainAxisSize: MainAxisSize.min,
                                children: <Widget>[
                                  Icon(
                                    Icons.maps_ugc_outlined,
                                    size: 80,
                                    color: Colors.grey,
                                  ),
                                  Center(
                                    child: Text(
                                      L10n.of(context).startYourFirstChat,
                                      textAlign: TextAlign.start,
                                      style: TextStyle(
                                        color: Colors.grey,
                                        fontSize: 16,
                                      ),
                                    ),
                                  ),
                                ],
                              );
                            }
                            final totalCount = rooms.length;
                            return ListView.builder(
                              itemCount: totalCount,
                              itemBuilder: (BuildContext context, int i) =>
                                  ChatListItem(
                                rooms[i],
                                selected: controller.selectedRoomIds
                                    .contains(rooms[i].id),
                                onTap: selectMode == SelectMode.select
                                    ? () =>
                                        controller.toggleSelection(rooms[i].id)
                                    : null,
                                onLongPress: () =>
                                    controller.toggleSelection(rooms[i].id),
                                activeChat:
                                    controller.widget.activeChat == rooms[i].id,
                              ),
                            );
                          } else {
                            return Center(
                              child: CircularProgressIndicator(),
                            );
                          }
                        },
                      );
                    }),
              ),
            ]),
            floatingActionButton: selectMode == SelectMode.normal
                ? FloatingActionButton(
                    onPressed: () => AdaptivePageLayout.of(context)
                        .pushNamedAndRemoveUntilIsFirst('/newprivatechat'),
                    child: Icon(CupertinoIcons.chat_bubble),
                  )
                : null,
          );
        });
  }
}

enum ChatListPopupMenuItemActions {
  createGroup,
  discover,
  setStatus,
  inviteContact,
  settings,
}