app/lib/paegs/msg_page/msg_page.dart

import 'dart:convert';

import 'package:bbyyy/beans/message_bean_entity.dart';
import 'package:bbyyy/beans/my_shop_bean_entity.dart';
import 'package:bbyyy/beans/system_information_bean_entity.dart';
import 'package:bbyyy/beans/table_bean_entity.dart';
import 'package:bbyyy/https/url.dart';
import 'package:bbyyy/msgDB/my_msg_db.dart';
import 'package:bbyyy/msgDB/sql_manager.dart';
import 'package:bbyyy/my_tools/const.dart';
import 'package:bbyyy/my_tools/event_bus.dart';
import 'package:bbyyy/my_tools/my_colors.dart';
import 'package:bbyyy/my_tools/my_cookie.dart';
import 'package:bbyyy/my_tools/my_tools.dart';
import 'package:bbyyy/my_tools/my_views.dart';
import 'package:bbyyy/paegs/chat_page/chat_page.dart';
import 'package:bbyyy/paegs/system_information_page/system_information_page.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_slidable/flutter_slidable.dart';
import 'package:flutter_svg/svg.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';

class MsgPage extends StatefulWidget {
  @override
  _MsgPageState createState() => _MsgPageState();
}

class _MsgPageState extends State<MsgPage> with AutomaticKeepAliveClientMixin {
  var types = ['商品', '对象'];
  List<DropdownMenuItem<String>> sortItems = [];
  int typeIndex = 0;
  bool showInput = false;
  TextEditingController _description = TextEditingController();
  FocusNode _descriptionFocus = FocusNode();
  RefreshController controller = RefreshController(initialRefresh: true);
  bool haveSysMsg = false;
  var sysMsgRead = false;
  String systemInformation;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    types.forEach((element) {
      sortItems.add(DropdownMenuItem(
        child: Text(
          element,
          style: TextStyle(color: MyColors.c666666, fontSize: 14),
        ),
        value: element,
      ));
    });
    _descriptionFocus.addListener(() {
      if (_descriptionFocus.hasFocus) {
      } else {
        if (_description.text.isEmpty) {
          setState(() {
            showInput = false;
          });
        }
      }
    });
    EventBus().on('hasNewMsgInMsgPage', (arg) {
      queryChatRoom();
    });
    EventBus().on('haveSysMsg', (arg) {
      haveSysMsg = true;
      setState(() {});
    });
  }

  @override
  void dispose() {
    // TODO: implement dispose
    super.dispose();
    EventBus().off('hasNewMsgInMsgPage');
    EventBus().off('haveSysMsg');
  }

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: () {
        MyTools().hideKeyboard(context);
      },
      behavior: HitTestBehavior.translucent,
      child: Scaffold(
        body: Stack(
          children: [
            Container(
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  colors: MyColors.lg,
                ),
              ),
              height: 152,
              // child: SafeArea(
              //   child: Container(
              //     decoration: BoxDecoration(
              //       color: Colors.white,
              //       borderRadius: BorderRadius.all(
              //         Radius.circular(17),
              //       ),
              //     ),
              //     height: 34,
              //     child: Row(
              //       children: [
              //         DropdownButtonHideUnderline(
              //           child: DropdownButton(
              //             items: sortItems,
              //             onChanged: (v) {
              //               setState(() {
              //                 typeIndex = types.indexOf(v);
              //               });
              //             },
              //             value: types[typeIndex],
              //           ),
              //         ),
              //         Container(
              //           height: 13,
              //           width: 1,
              //           decoration: BoxDecoration(
              //               borderRadius: BorderRadius.all(
              //                 Radius.circular(0.5),
              //               ),
              //               color: MyColors.c979797),
              //         ),
              //         Expanded(
              //           child: showInput
              //               ? TextField(
              //                   controller: _description,
              //                   focusNode: _descriptionFocus,
              //                   cursorColor: MyColors.cFF4233,
              //                   cursorWidth: 1.0,
              //                   decoration: InputDecoration(
              //                     border: InputBorder.none,
              //                     disabledBorder: InputBorder.none,
              //                     enabledBorder: InputBorder.none,
              //                     focusedBorder: InputBorder.none,
              //                     isDense: true,
              //                     hintText: '请输入描述',
              //                     hintStyle: TextStyle(
              //                         color: MyColors.c999999, fontSize: 14),
              //                     contentPadding: const EdgeInsets.fromLTRB(
              //                         14, 4.5, 8, 4.5),
              //                   ),
              //                   maxLines: 1,
              //                   style: TextStyle(
              //                       color: MyColors.c333333,
              //                       fontSize: 14,
              //                       height: 1.3,
              //                       letterSpacing: 0.2),
              //                   keyboardType: TextInputType.text,
              //                   onChanged: (t) {},
              //                 )
              //               : GestureDetector(
              //                   onTap: () {
              //                     setState(() {
              //                       showInput = true;
              //                     });
              //                     Timer(Duration(milliseconds: 100), () {
              //                       FocusScope.of(context)
              //                           .requestFocus(_descriptionFocus);
              //                     });
              //                   },
              //                   behavior: HitTestBehavior.translucent,
              //                   child: Row(
              //                     children: [
              //                       Container(
              //                         child:
              //                             SvgPicture.asset('images/svg/搜索.svg'),
              //                         margin: EdgeInsets.only(right: 5),
              //                       ),
              //                       Text(
              //                         '请输入',
              //                         style: TextStyle(
              //                             color: MyColors.cBFBFBF,
              //                             fontSize: 14),
              //                       )
              //                     ],
              //                     mainAxisAlignment: MainAxisAlignment.center,
              //                   ),
              //                 ),
              //         ),
              //         Container(
              //           decoration: BoxDecoration(
              //             color: MyColors.cFF4233,
              //             borderRadius: BorderRadius.all(
              //               Radius.circular(17),
              //             ),
              //           ),
              //           height: 34,
              //           width: 76,
              //           child: Text(
              //             '搜索',
              //             style: TextStyle(color: Colors.white, fontSize: 14),
              //           ),
              //           alignment: Alignment.center,
              //           padding: EdgeInsets.only(bottom: 2),
              //         )
              //       ],
              //     ),
              //     margin: EdgeInsets.only(
              //         left: 15,
              //         right: 15,
              //         top: 72 - MediaQuery.of(context).padding.top),
              //     padding: EdgeInsets.only(left: 16),
              //   ),
              // ),
              child: SafeArea(
                bottom: false,
                child: Stack(
                  children: [
                    Container(
                      height: 50,
                      child: Text(
                        '消息',
                        style: TextStyle(color: Colors.white, fontSize: 16),
                      ),
                      alignment: Alignment.center,
                    ),
                  ],
                  alignment: Alignment.topCenter,
                ),
              ),
              alignment: Alignment.topCenter,
            ),
            Container(
              decoration: BoxDecoration(
                color: Colors.white,
                borderRadius: BorderRadius.only(
                  topLeft: Radius.circular(16),
                  topRight: Radius.circular(16),
                ),
              ),
              margin:
                  EdgeInsets.only(top: MediaQuery.of(context).padding.top + 50),
              child: SmartRefresher(
                onRefresh: onRefresh,
                controller: controller,
                child: lastMsg.length == 0 && !haveSysMsg
                    ? SingleChildScrollView(child: noData())
                    : ListView.builder(
                        itemBuilder: (c, index) {
                          // if (index == 0) {
                          //   return msgItems(null);
                          // } else {
                          return msgItems(lastMsg[index]);
                          // }
                        },
                        itemCount: lastMsg.length,
                        padding: EdgeInsets.only(bottom: 65),
                      ),
              ),
            )
          ],
        ),
      ),
    );
  }

  @override
  // TODO: implement wantKeepAlive
  bool get wantKeepAlive => true;

  Widget msgItems(MessageBeanContent data) {
    String pic;
    String name;
    int uid;
    MyShopBeanDataData chatWith = MyShopBeanDataData();
    if (data.senderUid == MyCookie().getUID()) {
      pic = data.receiverPic;
      name = data.receiverName;
      uid = data.receiverUid;
      chatWith.userName = data.receiverName;
      chatWith.userUid = data.receiverUid;
      chatWith.userPic = data.receiverPic;
    } else {
      pic = data.senderPic;
      name = data.senderName;
      uid = data.senderUid;
      chatWith.userName = data.senderName;
      chatWith.userUid = data.senderUid;
      chatWith.userPic = data.senderPic;
    }
    if (data.senderUid == -1) {
      return Slidable(
        actionPane: SlidableDrawerActionPane(),
        actionExtentRatio: 0.25,
        child: GestureDetector(
          onTap: () {
            MyTools().toPage(context, SystemInformationPage(), (then) {});
          },
          behavior: HitTestBehavior.translucent,
          child: Container(
            height: 73,
            child: Column(
              children: [
                Expanded(
                  child: Row(
                    children: [
                      Container(
                        margin: EdgeInsets.only(left: 14, right: 14),
                        child: ClipRRect(
                          child: SvgPicture.asset(
                            'images/svg/平台助手.svg',
                            height: 45,
                            width: 45,
                          ),
                          borderRadius: BorderRadius.all(Radius.circular(4)),
                        ),
                      ),
                      Expanded(
                        child: Container(
                          height: 45,
                          padding: EdgeInsets.only(right: 14),
                          child: Column(
                            children: [
                              Row(
                                children: [
                                  Expanded(
                                    child: Text(
                                      '系统消息',
                                      style: TextStyle(
                                          color: MyColors.c333333,
                                          fontSize: 15),
                                    ),
                                  ),
                                  Text(
                                    '',
                                    style: TextStyle(
                                        color: MyColors.c888888, fontSize: 12),
                                  ),
                                ],
                              ),
                              Row(
                                children: [
                                  Expanded(
                                    child: Text(
                                      data.content,
                                      style: TextStyle(
                                          color: MyColors.c888888,
                                          fontSize: 12),
                                      maxLines: 1,
                                      overflow: TextOverflow.ellipsis,
                                      softWrap: true,
                                    ),
                                  ),
                                ],
                              )
                            ],
                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
                          ),
                        ),
                      )
                    ],
                  ),
                ),
                Container(
                  margin: EdgeInsets.only(left: 73, right: 14),
                  height: 0.5,
                  color: MyColors.cE7E7E7,
                )
              ],
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
            ),
          ),
        ),
        secondaryActions: <Widget>[
          SlideAction(
            child: Container(
              child: Container(
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(30),
                  color: MyColors.cFF4233,
                ),
                height: 40,
                width: 40,
                child: SvgPicture.asset(
                  'images/svg/del.svg',
                  height: 25,
                  width: 25,
                ),
                alignment: Alignment.center,
              ),
            ),
            onTap: () {
              showSimpleDialog('是否删除系统消息', context, () async {
                Navigator.pop(context);
                MyCookie().prefs.remove('${MyCookie().getUID()}系统消息');
                chatRoom.remove('系统消息');
                lastMsg.remove(data);
                setState(() {});
                queryChatRoom();
              });
            },
          )
        ],
      );
    } else {
      return Slidable(
        actionPane: SlidableDrawerActionPane(),
        actionExtentRatio: 0.25,
        child: GestureDetector(
          onTap: () {
            MyTools().toPage(context, ChatPage(chatWith, null), (then) {
              var now = new DateTime.now();
              MyCookie().prefs.setString(
                  '${MyCookie().getUID()}_${chatWith.userUid}',
                  now.toString().substring(0, 19));
              queryChatRoom();
            });
          },
          behavior: HitTestBehavior.translucent,
          child: Container(
            height: 73,
            child: Column(
              children: [
                Expanded(
                  child: Row(
                    children: [
                      Container(
                        margin: EdgeInsets.only(left: 14, right: 14),
                        child: ClipRRect(
                          child: uid == 0
                              ? Image.asset(
                                  'images/app_logo.png',
                                  height: 45,
                                  width: 45,
                                )
                              : MyViews().netImg(imgURL(pic), 45, 45,
                                  placeholder: 'images/svg/占位图.svg'),
                          borderRadius: BorderRadius.all(Radius.circular(4)),
                        ),
                      ),
                      Expanded(
                        child: Container(
                          height: 45,
                          padding: EdgeInsets.only(right: 14),
                          child: Column(
                            children: [
                              Row(
                                children: [
                                  Expanded(
                                      child: Text(
                                    uid == 0 ? '客服' : name,
                                    style: TextStyle(
                                        color: MyColors.c333333, fontSize: 15),
                                  )),
                                  Text(
                                    data.sentAt,
                                    style: TextStyle(
                                        color: MyColors.c888888, fontSize: 12),
                                  ),
                                ],
                              ),
                              Row(
                                children: [
                                  Expanded(
                                    child: Text(
                                      data.type != chatMsgTypeText
                                          ? '[${data.type}]'
                                          : data.content,
                                      style: TextStyle(
                                          color: MyColors.c888888,
                                          fontSize: 12),
                                      maxLines: 1,
                                      overflow: TextOverflow.ellipsis,
                                      softWrap: true,
                                    ),
                                  ),
                                  Visibility(
                                    visible: showRedPoint(
                                        chatWith.userUid, data.sentAt),
                                    child: Container(
                                      decoration: BoxDecoration(
                                          color: MyColors.cFF4233,
                                          borderRadius: BorderRadius.all(
                                              Radius.circular(4))),
                                      height: 8,
                                      width: 8,
                                      padding:
                                          EdgeInsets.only(left: 5, right: 5),
                                      alignment: Alignment.center,
                                    ),
                                  )
                                ],
                              )
                            ],
                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
                          ),
                        ),
                      )
                    ],
                  ),
                ),
                Container(
                  margin: EdgeInsets.only(left: 73, right: 14),
                  height: 0.5,
                  color: MyColors.cE7E7E7,
                )
              ],
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
            ),
          ),
        ),
        secondaryActions: <Widget>[
          SlideAction(
            child: Container(
              child: Container(
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(30),
                  color: MyColors.cFF4233,
                ),
                height: 40,
                width: 40,
                child: SvgPicture.asset(
                  'images/svg/del.svg',
                  height: 25,
                  width: 25,
                ),
                alignment: Alignment.center,
              ),
            ),
            onTap: () {
              showSimpleDialog(
                  '将删除与（${name.isEmpty ? '客服' : name}）的聊天记录，确认删除？', context,
                  () async {
                Navigator.pop(context);
                MsgDB msgDB = MsgDB('table${MyCookie().getUID()}_$uid');
                await msgDB.deleteTableData();
                chatRoom.remove(uid);
                lastMsg.remove(data);
                setState(() {});
                queryChatRoom();
              });
            },
          )
        ],
      );
    }

    // }
  }

  Map chatRoom = Map();
  List<MessageBeanContent> lastMsg = [];

  queryChatRoom() async {
    List<Map<String, dynamic>> map = await SqlManager.allTables();
    map.forEach((element) async {
      TableBeanEntity table =
          TableBeanEntity().fromJson(json.decode(json.encode(element)));
      if (table.name.contains('table${MyCookie().getUID()}_')) {
        MsgDB msgDB = MsgDB(table.name);
        List<Map<String, dynamic>> maps = await msgDB.queryTableData(1, 1);
        maps.forEach((element) {
          print(json.encode(element));
          MessageBeanContent msg =
              MessageBeanContent().fromJson(json.decode(json.encode(element)));
          if (msg.senderUid == MyCookie().getUID()) {
            print(msg.receiverUid);
            chatRoom[msg.receiverUid] = msg;
          } else {
            print(msg.senderUid);
            chatRoom[msg.senderUid] = msg;
          }
          lastMsg.clear();
          chatRoom.forEach((key, value) {
            lastMsg.add(value);
          });
          lastMsg.sort((left, right) {
            if (left.senderUid == -1) {
              return -1;
            } else if (right.senderUid == -1) {
              return 1;
            } else {
              return right.sentAt.compareTo(left.sentAt);
            }
          });
          setState(() {});
        });
      }
    });
    systemInformation =
        MyCookie().prefs.getString('${MyCookie().getUID()}系统消息');
    if (systemInformation != null) {
      print(systemInformation);
      List sList = json.decode(systemInformation);
      SystemInformationBeanEntity entity = SystemInformationBeanEntity().fromJson(json.decode(json.encode(sList[0])));
      MessageBeanContent sysMsg = MessageBeanContent();
      sysMsg.senderName = '系统消息';
      sysMsg.senderUid = -1;
      sysMsg.content = entity.content.content;
      chatRoom['系统消息'] = sysMsg;
      if (!lastMsg.any((element) => element.senderUid == -1)) {
        lastMsg.insert(0, chatRoom['系统消息']);
      }
    }
    setState(() {

    });
    endRe(controller);
  }

  void onRefresh() {
    queryChatRoom();
  }

  showRedPoint(int userUid, String sentAt) {
    try {
      String lastTime =
          MyCookie().prefs.getString('${MyCookie().getUID()}_$userUid');
      print('--------------');
      print(lastTime);
      print(sentAt);
      print('--------------');

      return lastTime.compareTo(sentAt) == -1;
    } catch (e) {
      return true;
    }
  }
}