import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:keyboard_shortcuts/keyboard_shortcuts.dart';
import 'package:vrouter/vrouter.dart';

import 'package:fluffychat/config/app_config.dart';
import 'package:fluffychat/config/themes.dart';
import 'package:fluffychat/pages/chat_list/chat_list.dart';
import '../../widgets/matrix.dart';
import 'chat_list_body.dart';
import 'chat_list_header.dart';
import 'navigation_rail.dart';
import 'start_chat_fab.dart';

class ChatListView extends StatelessWidget {
  final ChatListController controller;

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

  @override
  Widget build(BuildContext context) {
    return StreamBuilder<Object?>(
      stream: Matrix.of(context).onShareContentChanged.stream,
      builder: (_, __) {
        final selectMode = controller.selectMode;
        return VWidgetGuard(
          onSystemPop: (redirector) async {
            final selMode = controller.selectMode;
            if (selMode != SelectMode.normal) {
              controller.cancelAction();
              redirector.stopRedirection();
              return;
            }
            if (controller.activeFilter !=
                (AppConfig.separateChatTypes
                    ? ActiveFilter.messages
                    : ActiveFilter.allChats)) {
              controller
                  .onDestinationSelected(AppConfig.separateChatTypes ? 1 : 0);
              redirector.stopRedirection();
              return;
            }
          },
          child: Row(
            children: [
              if (FluffyThemes.isColumnMode(context) &&
                  FluffyThemes.getDisplayNavigationRail(context) != null) ...[
                ChatListNavigationRail(controller: controller),
                Container(
                  color: Theme.of(context).dividerColor,
                  width: 1,
                ),
              ],
              Expanded(
                child: GestureDetector(
                  onTap: FocusManager.instance.primaryFocus?.unfocus,
                  excludeFromSemantics: true,
                  behavior: HitTestBehavior.translucent,
                  child: Scaffold(
                    appBar: ChatListHeader(controller: controller),
                    body: ChatListViewBody(controller),
                    bottomNavigationBar: controller.displayNavigationBar
                        ? NavigationBar(
                            height: 64,
                            selectedIndex: controller.selectedIndex,
                            onDestinationSelected:
                                controller.onDestinationSelected,
                            destinations:
                                controller.getNavigationDestinations(context),
                          )
                        : null,
                    floatingActionButtonLocation:
                        controller.filteredRooms.isEmpty
                            ? FloatingActionButtonLocation.centerFloat
                            : null,
                    floatingActionButton: selectMode == SelectMode.normal
                        ? KeyBoardShortcuts(
                            keysToPress: {
                              LogicalKeyboardKey.controlLeft,
                              LogicalKeyboardKey.keyN
                            },
                            onKeysPressed: () =>
                                VRouter.of(context).to('/newprivatechat'),
                            helpLabel: L10n.of(context)!.newChat,
                            child: StartChatFloatingActionButton(
                              controller: controller,
                            ),
                          )
                        : null,
                  ),
                ),
              ),
            ],
          ),
        );
      },
    );
  }
}

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