app/lib/paegs/red_packet_page/red_packet_page.dart

import 'dart:convert';

import 'package:bbyyy/beans/my_shop_bean_entity.dart';
import 'package:bbyyy/beans/send_message_bean_entity.dart';
import 'package:bbyyy/beans/user_bean_entity.dart';
import 'package:bbyyy/https/MyDio.dart';
import 'package:bbyyy/https/my_request.dart';
import 'package:bbyyy/https/url.dart';
import 'package:bbyyy/msgDB/my_msg_db.dart';
import 'package:bbyyy/my_tools/const.dart';
import 'package:bbyyy/my_tools/dims.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:flutter/material.dart';
import 'package:flutter/services.dart';

class RedPacketPage extends StatefulWidget {
  MyShopBeanDataData chatWith;

  RedPacketPage(this.chatWith);

  @override
  _RedPacketPageState createState() => _RedPacketPageState();
}

class _RedPacketPageState extends State<RedPacketPage> {
  TextEditingController _controller = TextEditingController();

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    Future.delayed(Duration.zero,(){
      queryPersonalInformation();
    });
  }
  void queryPersonalInformation() {
    MyDio().query({
      "key": "user",
      "filters": {
        "conditions": ["uid == ${MyCookie().getUID()}"]
      },
      "dims": userDims,
      "paging": [1, 20]
    }, (response, hasError) {
      if (!hasError) {
        UserBeanEntity entity =
            UserBeanEntity().fromJson(json.decode(response.data.toString()));
        MyCookie().userBean = entity.data.data[0];
        EventBus().emit('userChange');
        setState(() {});
      }
    }, (error) {});
  }
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          MyViews().myAppBar('发送红包', context, []),
          Expanded(
            child: Column(
              children: [
                Container(
                  margin: EdgeInsets.fromLTRB(17, 24, 17, 0),
                  child: Row(
                    children: [
                      ClipRRect(
                        child: MyViews()
                            .netImg(imgURL(widget.chatWith.userPic), 24, 24),
                        borderRadius: BorderRadius.circular(12),
                      ),
                      Container(
                        child: MyViews().myText(
                            widget.chatWith.userName, MyColors.c666666, 15),
                        margin: EdgeInsets.only(left: 10),
                      ),
                    ],
                  ),
                ),
                Container(
                  decoration: BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.circular(4)),
                  margin: EdgeInsets.symmetric(horizontal: 17, vertical: 14),
                  padding: EdgeInsets.symmetric(horizontal: 20, vertical: 15),
                  child: Column(
                    children: [
                      MyViews().myText('红包金额', MyColors.c333333, 16),
                      Container(
                        margin: EdgeInsets.only(top: 15),
                        child: Row(
                          children: [
                            Text(
                              '¥',
                              style: TextStyle(
                                  color: MyColors.c333333, fontSize: 30),
                            ),
                            Expanded(
                              child: TextField(
                                inputFormatters: [
                                  FilteringTextInputFormatter.allow(
                                      RegExp("[0-9.]")),
                                ],
                                controller: _controller,
                                cursorColor: MyColors.cFF4233,
                                cursorWidth: 1.0,
                                decoration: InputDecoration(
                                    border: InputBorder.none,
                                    disabledBorder: InputBorder.none,
                                    enabledBorder: InputBorder.none,
                                    focusedBorder: InputBorder.none,
                                    hintText: '请输入金额',
                                    hintStyle: TextStyle(
                                        color: MyColors.c999999, fontSize: 16),
                                    isDense: true,
                                    contentPadding: const EdgeInsets.fromLTRB(
                                        14, 4.5, 8, 4.5)),
                                maxLines: 1,
                                style: TextStyle(
                                    color: MyColors.c333333,
                                    fontSize: 32,
                                    fontWeight: FontWeight.bold,
                                    height: 1.3,
                                    letterSpacing: 0.2),
                                keyboardType: TextInputType.number,
                                onChanged: (t) {
                                  setState(() {});
                                },
                              ),
                            )
                          ],
                        ),
                      ),
                    ],
                    crossAxisAlignment: CrossAxisAlignment.start,
                  ),
                ),
                GestureDetector(
                  onTap: () {
                    sendRedEnvelope();
                  },
                  behavior: HitTestBehavior.translucent,
                  child: Container(
                    decoration: BoxDecoration(
                        color: MyColors.cFF4233,
                        borderRadius: BorderRadius.circular(20)),
                    child: MyViews().myText('发送', Colors.white, 14),
                    alignment: Alignment.center,
                    height: 40,
                    margin: EdgeInsets.only(
                        top: 20, bottom: 15, left: 17, right: 17),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  double amount;

  void sendRedEnvelope() {
    try {
      amount = double.parse(_controller.text.toString());
      _controller.clear();
      if (amount > MyCookie().userBean.balance) {
        showToast('超过你拥有的积分');
        return;
      }
      if (amount <= 0) {
        showToast('请输入正确的金额');
        return;
      }
      MyDio().post('/pay/redPacket', {
        'payer_uid': MyCookie().getUID(),
        'payee_uid': widget.chatWith.userUid,
        'amount': amount,
      }, (response, hasError) {
        if (!hasError) {
          showToast('发送成功');
          sendRedP();
        }
      }, (error) {});
    } catch (e) {
      showToast('请输入正确的金额');
    }
  }

  void sendRedP() {
    sendMsg(chatMsgTypeRedPackage, widget.chatWith.userUid, '$amount!@#${widget.chatWith.userName}',
        (re, hE) async {
      if (!hE) {
        SendMessageBeanEntity entity =
            SendMessageBeanEntity().fromJson(json.decode(re.data.toString()));
        MsgDB msgDB =
            MsgDB('table${MyCookie().getUID()}_${entity.data.receiverUid}');
        if (!msgDB.isTableExits) {
          await msgDB.open();
        }
        await msgDB.addTableData([entity.data]);
        EventBus().emit('hasNewMsg', entity.data);
        EventBus().emit('hasNewMsgInMsgPage', entity.data);
        Navigator.pop(context);
      }
    }, (e) {});
  }
}