Hibok/lib/chat/group_chat_view.dart

import 'dart:convert';
import 'dart:io';

import 'package:chat/chat/group_chat_item.dart';
import 'package:chat/data/UserData.dart';
import 'package:chat/data/chat_data_mgr.dart';
import 'package:chat/data/constants.dart';
import 'package:chat/data/group_data_mgr.dart';
import 'package:chat/generated/i18n.dart';
import 'package:chat/home/group_setting.dart';
import 'package:chat/models/ChatMsg.dart';
import 'package:chat/models/group_info_model.dart';
import 'package:chat/models/keyboard_provider.dart';
import 'package:chat/models/money_change.dart';
import 'package:chat/models/voucher_change.dart';
import 'package:chat/proto/all.pbserver.dart';
import 'package:chat/utils/CustomUI.dart';
import 'package:chat/utils/MessageMgr.dart';
import 'package:chat/utils/analyze_utils.dart';
import 'package:chat/utils/msgHandler.dart';
import 'package:chat/utils/net_state_widget.dart';
import 'package:chat/utils/screen.dart';
import 'package:chat/utils/sound_util.dart';
import 'package:chat/utils/sp_utils.dart';
import 'package:chat/utils/sql_util.dart';
import 'package:extended_text/extended_text.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:oktoast/oktoast.dart';
import 'package:provider/provider.dart';
import '../r.dart';
import 'input_bar.dart';
import 'package:chat/models/ref_name_provider.dart';


class GroupChatPage extends StatefulWidget {
  final GroupInfoModel groupInfoModel;
  final int enterType; // 0默认  1图片
  final dynamic enterContent;
  GroupChatPage(
      {Key key, this.groupInfoModel, this.enterType = 0, this.enterContent})
      : super(key: key);

  _GroupChatPageState createState() => _GroupChatPageState();
}

class _GroupChatPageState extends State<GroupChatPage> {
  ScrollController _scrollCtrl = ScrollController();

  MessageMgr msgMgr = MessageMgr();

  List<MsgModel> msgList;

  KeyboardIndexProvider _keyboardIndexProvider = KeyboardIndexProvider();

  TextEditingController nickNameController = new TextEditingController();

  //统计聊天时长
  int startTime;

  //子元素的对应偏移量
  Map itemOffsetMap = {};

  @override
  void dispose() {
    var endTime = DateTime.now().millisecondsSinceEpoch ~/ 1000;
    AnalyzeUtils.commitChatDuration(startTime, endTime);

    msgMgr.off('New Chat Message', receiveMsg);
    msgMgr.off('Keyboard Hide', dealWithKeyboardHide);
    msgMgr.off('Update Group Info', updateGroupInfo);
    msgMgr.off('Delete Select Message', _deleteItem);
    MsgHandler.curActiveSession = 0;
    SoundUtils().stop();
    _scrollCtrl.dispose();

    super.dispose();
  }

  @override
  void initState() {
    super.initState();
    print('init group chat page ${widget.groupInfoModel.sessionId}');

    getDefaultSetting();

    startTime = DateTime.now().millisecondsSinceEpoch ~/ 1000;
    MsgHandler.updateActiveSesstion(widget.groupInfoModel.sessionId,
        isGroup: true);

    msgList = ChatDataMgr().getGroupRecord();


    for(int k=0;k<msgList.length;k++){
      MsgModel msg = msgList[k];
      print('msgList ${msg.msgType} ${msg.from}'  );
    }


    msgMgr.on('New Chat Message', receiveMsg);
    msgMgr.on('Keyboard Hide', dealWithKeyboardHide);
    msgMgr.on('Update Group Info', updateGroupInfo);
    msgMgr.on('Delete Select Message', _deleteItem);

    WidgetsBinding.instance.addPostFrameCallback((_) {
      if (widget.enterType == 1) {
        print('接收到的:${widget.enterContent}');
        _sendFile(File(widget.enterContent));
      }
    });
  }


  void _sendFile( File file) async {
//    File file = await FilePicker.getFile();
    int fileSize = file.lengthSync();
    print('选择的文件 ${file.path} 大小 $fileSize');

    if (fileSize > 33 * 1024 * 1024) {
      showToast('文件大于33M');
      return;
    }


    var fileName = file.path.split('/').last;
    print('fileName  $fileName');

    var ext = '';
    var extList = fileName.split('.');
    if (extList.length > 1) {
      ext = extList.last;
    }
    print('ext  $ext');

    var fileMsg = FileChat.create();
    fileMsg.type = ext;
    fileMsg.size = fileSize;
    fileMsg.name = fileName;

    var msg = MsgHandler.createSendMsg(ChatType.FileChatType, fileMsg.writeToBuffer(),
        friendId: 0,
        localFile: file.path,
        channelType:
        ChatChannelType.Group);

    sendMsg(msg);

  }


  updateGroupInfo(args) {
    print('更新群信息');
    if (mounted) {
      setState(() {});
    }
  }

  void getDefaultSetting() async {
    bool soundPlayMode =
        (await SPUtils.getBool(Constants.SOUND_PLAY_MODE)) ?? false;

    _keyboardIndexProvider.init(soundPlayMode);
  }

  dealWithKeyboardHide(args) {
    if (_keyboardIndexProvider.curKeyboardIndex == 0) {
      readOnly();
    }
  }

  @override
  Widget build(BuildContext context) {
    List<Widget> actions = [];
    actions.add(Row(
      children: <Widget>[
        CustomUI.buildImageLabel("assets/images/voucher.png",
            Provider.of<VoucherChangeProvider>(context).voucher,
            imgOpc: 0.5, imgHeight: 13),
        CustomUI.buildImageLabel(
            R.assetsImagesCoin, Provider.of<MoneyChangeProvider>(context).money,
            isLeft: false)
      ],
    ));
    actions.add(widget.groupInfoModel.isInGroup
        ? IconButton(
            icon: Icon(Icons.more_horiz),
            iconSize: 22,
            onPressed: () {
              //进入群管理界面
              hideKeyBoard();

              Navigator.of(context).push(
                new MaterialPageRoute(
                  builder: (context) {
                    return GroupSetting(
                      groupInfoModel: widget.groupInfoModel,
                    );
                  },
                ),
              );
            },
          )
        : IconButton(
            icon: Icon(Icons.delete),
            iconSize: 22,
            color: Colors.redAccent,
            onPressed: () {
              //进入群管理界面
              quiteGroup();
            },
          ));

    Map refMap = Provider.of<RefNameProvider>(context).refMap;

    return MultiProvider(
        providers: [
          ChangeNotifierProvider(create: (_) => _keyboardIndexProvider),
          Provider<bool>.value(value: true),
          Provider<GroupInfoModel>.value(value: widget.groupInfoModel),
        ],
        child: GestureDetector(
            onTap: hideKeyBoard,
            child: ExtendedTextSelectionPointerHandler(
              ///选择文字，消除弹窗
              builder: (states) {
                return Listener(
                  child: Scaffold(
                      resizeToAvoidBottomInset: false,
                      backgroundColor: const Color(0xFFE2E9F1),
                      appBar: AppBar(
                          backgroundColor: AppColors.NewAppbarBgColor,
                          title: Text(
                            widget.groupInfoModel.getGroupName(refMap),
                            textScaleFactor: 1.0,
                            style: TextStyle(
                                color: Constants.BlackTextColor,
                                fontSize: 16.47),
                          ),
                          leading: CustomUI.buildCustomLeading(context),
                          titleSpacing: -10,
                          elevation: 1,
                          centerTitle: false,
                          actions: actions),
                      body: SafeArea(
                          child: Column(
                        children: <Widget>[
                          NetStateWidget(),
                          Expanded(child: _buildMessageList()),
                          InputBar(sendMsg: sendMsg),
                        ],
                      ))),
                  behavior: HitTestBehavior.translucent,
                  onPointerDown: (value) {
                    for (var state in states) {
                      if (!state.containsPosition(value.position)) {
                        //clear other selection
                        state.clearSelection();
                      }
                    }
                  },
                  onPointerMove: (value) {
                    //clear other selection
                    for (var state in states) {
                      if (!state.containsPosition(value.position)) {
                        //clear other selection
                        state.clearSelection();
                      }
                    }
                  },
                );
              },
            )));
  }

  //更新各个子元素的偏移位置
  _updateMsgItemOffset() {
    if (msgList.length == 0) {
      return;
    }

    var myId = UserData().basicInfo.userId;
    double offset = 0;
    for (var i = 0; i < msgList.length; i++) {
      MsgModel msg = msgList[i];

      double itemHeight = 40;
      switch (ChatType.valueOf(msg.msgType)) {
        case ChatType.TextChatType:
          if (msg.from == myId) {
            var text = utf8.decode(msg.msgContent);
            itemHeight = 21 + _getTextHeight(text);
          } else {}
          break;
        case ChatType.ShortVoiceChatType:
          if (msg.from == myId) {
            itemHeight = 22.5 + 24;
          } else {}
          break;
        case ChatType.ImageChatType:
          itemHeight = _getImgHeight(msg);
          break;
        case ChatType.ShortVideoChatType:
          itemHeight = _getImgHeight(msg);
          break;
        case ChatType.EmoticonType:
          itemHeight = 40;
          break;
        case ChatType.RedWalletChatType:
          print('红包消息');
          itemHeight = 70;
          break;
        case ChatType.PlaceChatType:
          itemHeight = 100 + 40.0;
          break;
        case ChatType.GroupChatNoticeType:
          itemHeight = 40;
          break;
        case ChatType.GiftChatType:
          itemHeight = 40;
          break;
        case ChatType.FileChatType:
          itemHeight = 80;
          break;
        default:
      }

      itemOffsetMap[i] = offset;
      offset += itemHeight;
    }
  }

  double _getTextHeight(String text) {
    var tp = TextPainter(
      text: TextSpan(style: TextStyle(fontSize: 15), text: text),
      textAlign: TextAlign.left,
      textDirection: TextDirection.ltr,
      textScaleFactor: 1,
    );

    tp.layout(maxWidth: Screen.width - 140);

    return tp.height;
  }

  double _getImgHeight(MsgModel msg) {
    double aspectRatio = msg.extraInfo / 100;

    var maxWidth = Screen.width * 0.65;
    var maxHeight = Screen.height / 4;

    double height;
    if (maxWidth / maxHeight > aspectRatio) {
      height = maxHeight;
    } else {
      height = maxWidth / aspectRatio;
    }

    return height;
  }

  Widget _buildMessageList() {
    return Container(
      alignment: Alignment.topCenter,
      child: msgList.length == 0
          ? Padding(
              padding: EdgeInsets.all(10),
              child: Text(
                I18n.of(context).chat_tips,
                textAlign: TextAlign.center,
                textScaleFactor: 1.0,
                style: TextStyle(color: Colors.grey),
              ))
          : Scrollbar(child: ListView.builder(
              reverse: true,
              shrinkWrap: true,
              itemCount: msgList.length,
              controller: _scrollCtrl,
              padding: EdgeInsets.all(8.0),
              itemBuilder: _buildItem,
            )),
    );
  }

  hideKeyBoard() {
    _keyboardIndexProvider.changeSelectIndex(-1);
  }

  readOnly() {
    _keyboardIndexProvider.changeReadOnlyKey(true);
  }

  sendMsg(MsgModel msg) {
    if (!widget.groupInfoModel.isInGroup) {
      //如果不在该群
      showToast(I18n.of(context).not_in_group);
      return;
    }

    MsgHandler.insertMsgToDB(msg);
    MsgHandler.sendChatMsg(msg);
    if (mounted) {
      setState(() {});
    }

    if (_scrollCtrl.hasClients) {
      _scrollCtrl.animateTo(0,
          duration: new Duration(milliseconds: 500), curve: Curves.ease);
    }
  }

  void receiveMsg(args) {
    if (args != widget.groupInfoModel.sessionId) {
      return;
    }
    if (mounted) {
      setState(() {});
      if (_scrollCtrl.hasClients) {
        _scrollCtrl.animateTo(0,
            duration: new Duration(milliseconds: 500), curve: Curves.ease);
      }
    }
  }

  _deleteItem(msg) {
    MessageMgr().emit('Cancel Request', msg);
    print('#### 开始删除--');
    msgList.remove(msg);
    setState(() {});
    SqlUtil().deleteSigleRecordWith(msg.sessionId, msg.time);
  }

  Widget _buildItem(BuildContext context, int index) {
    var lastMsgTime;
    if (index < msgList.length - 1) {
      lastMsgTime = msgList[index + 1].time;
    }

    MsgModel msg = msgList[index];

    if (msg.from == 0) {
      return GroupChatPageItem(
          key: Key(msg.time.toString()), msg: msg, lastMsgTime: lastMsgTime);
    } else {
      return GroupChatPageItem(
          key: Key(msg.time.toString()),
          msg: msg,
          memberModel: widget.groupInfoModel.getMember(msg.from),
          hideKeyboard: readOnly,
          lastMsgTime: lastMsgTime);
    }
  }

  quiteGroup() {
    var function = () {
      GroupInfoMgr().deleteGroup(widget.groupInfoModel.sessionId);
      MessageMgr().emit('Quit Group', widget.groupInfoModel.sessionId);
      Navigator.of(context).popUntil(ModalRoute.withName('/main'));
      MsgHandler.quitGroup(widget.groupInfoModel.sessionId);
    };

    showModalBottomSheet(
      context: context,
      backgroundColor: Colors.transparent,
      builder: (BuildContext context) {
        return Container(
          decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.only(
                  topLeft: Radius.circular(13), topRight: Radius.circular(13))),
          height: 225,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Padding(
                padding: EdgeInsets.fromLTRB(15, 15, 15, 13),
                child: Text(
                  I18n.of(context).quit_group_tips,
                  style: TextStyle(fontSize: 12, color: Color(0xff777777)),
                ),
              ),
              Divider(
                color: Color(0xffE5E5E5),
              ),
              InkWell(
                onTap: function,
                child: Container(
                  height: 60,
                  alignment: Alignment.center,
                  child: Text(I18n.of(context).determine,
                      style: TextStyle(
                          fontSize: 18, color: Constants.ConfrimButtonColor)),
                ),
              ),
              Container(
                color: Color(0xffF2F2F2),
                height: 4,
              ),
              InkWell(
                onTap: () {
                  Navigator.of(context).pop();
                },
                child: Container(
                  height: 60,
                  alignment: Alignment.center,
                  child: Text(I18n.of(context).cancel,
                      style: TextStyle(fontSize: 18, color: Color(0xff4B4B4B))),
                ),
              )
            ],
          ),
        );
      },
    );
  }
}