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:provider/provider.dart';

import '../../mobile/pages/home_page.dart';

class ChatPage extends StatelessWidget implements PageShape {
  late final ChatModel chatModel;

  ChatPage({ChatModel? chatModel}) {
    this.chatModel = chatModel ?? gFFI.chatModel;
  }

  @override
  final title = translate("Chat");

  @override
  final icon = Icon(Icons.chat);

  @override
  final appBarActions = [
    PopupMenuButton<int>(
        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 id = entry.key;
            final user = entry.value.chatUser;
            return PopupMenuItem<int>(
              child: Text("${user.firstName}   ${user.id}"),
              value: id,
            );
          }).toList();
        },
        onSelected: (id) {
          gFFI.chatModel.changeCurrentID(id);
        })
  ];

  @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 currentUser = chatModel.currentUser;
              return Stack(
                children: [
                  LayoutBuilder(builder: (context, constraints) {
                    final chat = DashChat(
                      onSend: (chatMsg) {
                        chatModel.send(chatMsg);
                        chatModel.inputNode.requestFocus();
                      },
                      currentUser: chatModel.me,
                      messages: chatModel
                              .messages[chatModel.currentID]?.chatMessages ??
                          [],
                      inputOptions: InputOptions(
                          sendOnEnter: true,
                          focusNode: chatModel.inputNode,
                          inputTextStyle: TextStyle(
                              fontSize: 14,
                              color: Theme.of(context)
                                  .textTheme
                                  .titleLarge
                                  ?.color),
                          inputDecoration: isDesktop
                              ? InputDecoration(
                                  isDense: true,
                                  hintText:
                                      "${translate('Write a message')}",
                                  filled: true,
                                  fillColor:
                                      Theme.of(context).colorScheme.background,
                                  contentPadding: EdgeInsets.all(10),
                                  border: OutlineInputBorder(
                                    borderRadius: BorderRadius.circular(6),
                                    borderSide: const BorderSide(
                                      width: 0,
                                      style: BorderStyle.none,
                                    ),
                                  ),
                                )
                              : defaultInputDecoration(
                                  hintText:
                                      "${translate('Write a message')}",
                                  fillColor:
                                      Theme.of(context).colorScheme.background),
                          sendButtonBuilder: defaultSendButton(
                              padding: EdgeInsets.symmetric(
                                  horizontal: 6, vertical: 0),
                              color: Theme.of(context).colorScheme.primary)),
                      messageOptions: MessageOptions(
                          showOtherUsersAvatar: false,
                          textColor: Colors.white,
                          maxWidth: constraints.maxWidth * 0.7,
                          messageTextBuilder: (message, _, __) {
                            final isOwnMessage =
                                message.user.id == currentUser.id;
                            return Column(
                              crossAxisAlignment: isOwnMessage
                                  ? CrossAxisAlignment.end
                                  : CrossAxisAlignment.start,
                              children: <Widget>[
                                Text(message.text,
                                    style: TextStyle(color: Colors.white)),
                                Padding(
                                  padding: const EdgeInsets.only(top: 5),
                                  child: Text(
                                    "${message.createdAt.hour}:${message.createdAt.minute}",
                                    style: TextStyle(
                                      color: Colors.white,
                                      fontSize: 10,
                                    ),
                                  ),
                                ),
                              ],
                            );
                          },
                          messageDecorationBuilder: (_, __, ___) =>
                              defaultMessageDecoration(
                                color: MyTheme.accent80,
                                borderTopLeft: 8,
                                borderTopRight: 8,
                                borderBottomRight: 8,
                                borderBottomLeft: 8,
                              )),
                    );
                    return SelectionArea(child: chat);
                  }),
                  desktopType == DesktopType.cm ||
                          chatModel.currentID == ChatModel.clientModeID
                      ? SizedBox.shrink()
                      : Padding(
                          padding: EdgeInsets.all(12),
                          child: Row(
                            children: [
                              Icon(Icons.account_circle,
                                  color: MyTheme.accent80),
                              SizedBox(width: 5),
                              Text(
                                "${currentUser.firstName}   ${currentUser.id}",
                                style: TextStyle(color: MyTheme.accent50),
                              ),
                            ],
                          )),
                ],
              );
            })));
  }
}