content: import 'package:dash_chat_2/dash_chat_2.dart';
  import 'package:flutter/material.dart';
  import 'package:flutter_hbb/common.dart';
  import 'package:flutter_hbb/models/chat_model.dart';
  import 'package:get/get.dart';
  import 'package:provider/provider.dart';
  
  import '../../mobile/pages/home_page.dart';
  
  enum ChatPageType {
    mobileMain,
    desktopCM,
  }
  
  class ChatPage extends StatelessWidget implements PageShape {
    late final ChatModel chatModel;
    final ChatPageType? type;
  
    ChatPage({ChatModel? chatModel, this.type}) {
      this.chatModel = chatModel ?? gFFI.chatModel;
    }
  
    @override
    final title = translate("Chat");
  
    @override
    final icon = unreadTopRightBuilder(gFFI.chatModel.mobileUnreadSum);
  
    @override
    final appBarActions = [
      PopupMenuButton<MessageKey>(
          tooltip: "",
          icon: unreadTopRightBuilder(gFFI.chatModel.mobileUnreadSum,
              icon: Icon(Icons.group)),
          itemBuilder: (context) {
            // only mobile need [appBarActions], just bind gFFI.chatModel
            final chatModel = gFFI.chatModel;
            return chatModel.messages.entries.map((entry) {
              final key = entry.key;
              final user = entry.value.chatUser;
              final client = gFFI.serverModel.clients
                  .firstWhereOrNull((e) => e.id == key.connId);
              final connected =
                  gFFI.serverModel.clients.any((e) => e.id == key.connId);
              return PopupMenuItem<MessageKey>(
                child: Row(
                  children: [
                    Icon(
                            key.isOut
                                ? Icons.call_made_rounded
                                : Icons.call_received_rounded,
                            color: MyTheme.accent)
                        .marginOnly(right: 6),
                    Text("${user.firstName}   ${user.id}"),
                    if (connected)
                      Container(
                        width: 10,
                        height: 10,
                        decoration: BoxDecoration(
                            shape: BoxShape.circle,
                            color: Color.fromARGB(255, 46, 205, 139)),
                      ).marginSymmetric(horizontal: 2),
                    if (client != null)
                      unreadMessageCountBuilder(client.unreadChatMessageCount)
                          .marginOnly(left: 4)
                  ],
                ),
                value: key,
              );
            }).toList();
          },
          onSelected: (key) {
            gFFI.chatModel.changeCurrentKey(key);
          })
    ];
  
    @override
    Widget build(BuildContext context) {
      return ChangeNotifierProvider.value(
        value: chatModel,
        child: Container(
          color: Theme.of(context).scaffoldBackgroundColor,
          child: Consumer<ChatModel>(
            builder: (context, chatModel, child) {
              final readOnly = type == ChatPageType.mobileMain &&
                      (chatModel.currentKey.connId == ChatModel.clientModeID ||
                          gFFI.serverModel.clients.every((e) =>
                              e.id != chatModel.currentKey.connId ||
                              chatModel.currentUser == null)) ||
                  type == ChatPageType.desktopCM &&
                      gFFI.serverModel.clients
                              .firstWhereOrNull(
                                  (e) => e.id == chatModel.currentKey.connId)
                              ?.disconnected ==
                          true;
              return Stack(
                children: [
                  LayoutBuilder(builder: (context, constraints) {
                    final chat = DashChat(
                      onSend: chatModel.send,
                      currentUser: chatModel.me,
                      messages: chatModel
                              .messages[chatModel.currentKey]?.chatMessages ??
                          [],
                      readOnly: readOnly,
                      inputOptions: InputOptions(
                        focusNode: chatModel.inputNode,
                        textController: chatModel.textController,
                        inputTextStyle: TextStyle(
                            fontSize: 14,
                            color: Theme.of(context).textTheme.titleLarge?.color),
                        inputDecoration: InputDecoration(
                          isDense: true,
                          hintText: translate('Write a message'),
                          filled: true,
                          fillColor: Theme.of(context).colorScheme.background,
                          contentPadding: EdgeInsets.all(10),
                          border: OutlineInputBorder(
                            borderRadius: BorderRadius.circular(10.0),
                            borderSide: const BorderSide(
                              width: 1,
                              style: BorderStyle.solid,
                            ),
                          ),
                        ),
                        sendButtonBuilder: defaultSendButton(
                          padding:
                              EdgeInsets.symmetric(horizontal: 6, vertical: 0),
                          color: MyTheme.accent,
                          icon: Icons.send_rounded,
                        ),
                      ),
                      messageOptions: MessageOptions(
                        showOtherUsersAvatar: false,
                        showOtherUsersName: false,
                        textColor: Colors.white,
                        maxWidth: constraints.maxWidth * 0.7,
                        messageTextBuilder: (message, _, __) {
                          final isOwnMessage = message.user.id.isBlank!;
                          return Column(
                            crossAxisAlignment: isOwnMessage
                                ? CrossAxisAlignment.end
                                : CrossAxisAlignment.start,
                            children: <Widget>[
                              Text(message.text,
                                  style: TextStyle(color: Colors.white)),
                              Text(
                                "${message.createdAt.hour}:${message.createdAt.minute.toString().padLeft(2, '0')}",
                                style: TextStyle(
                                  color: Colors.white,
                                  fontSize: 8,
                                ),
                              ).marginOnly(top: 3),
                            ],
                          );
                        },
                        messageDecorationBuilder:
                            (message, previousMessage, nextMessage) {
                          final isOwnMessage = message.user.id.isBlank!;
                          return defaultMessageDecoration(
                            color:
                                isOwnMessage ? MyTheme.accent : Colors.blueGrey,
                            borderTopLeft: 8,
                            borderTopRight: 8,
                            borderBottomRight: isOwnMessage ? 2 : 8,
                            borderBottomLeft: isOwnMessage ? 8 : 2,
                          );
                        },
                      ),
                    ).workaroundFreezeLinuxMint();
                    return SelectionArea(child: chat);
                  }),
                ],
              ).paddingOnly(bottom: 8);
            },
          ),
        ),
      );
    }
  }
  