app/lib/paegs/pay_page/pay_page.dart

import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'dart:math' as math;

import 'package:bbyyy/beans/alipay_result_bean_entity.dart';
import 'package:bbyyy/beans/my_coupon_bean_entity.dart';
import 'package:bbyyy/beans/pay_by_alipay_bean_entity.dart';
import 'package:bbyyy/beans/pay_by_we_chat_bean_entity.dart';
import 'package:bbyyy/beans/smart_order_bean_entity.dart';
import 'package:bbyyy/beans/user_balance_entity.dart';
import 'package:bbyyy/https/MyDio.dart';
import 'package:bbyyy/https/my_request.dart';
import 'package:bbyyy/https/url.dart';
import 'package:bbyyy/my_tools/const.dart';
import 'package:bbyyy/my_tools/dims.dart';
import 'package:bbyyy/my_tools/easy_loading/easy_loading.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/mine_page/wallet_page/wallet_page.dart';
import 'package:bbyyy/pay/pay_tools.dart';
import 'package:flustars/flustars.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:fluwx/fluwx.dart';
import 'package:tobias/tobias.dart';

class PayPage extends StatefulWidget {
  int orderUID;
  bool cancelOrder;
  double amount;
  int payWay;
  MyCouponBeanDataData couponData;
  double discountAmount;

  PayPage(this.orderUID, this.cancelOrder, this.amount, this.payWay,
      this.couponData, this.discountAmount);

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

class _PayPageState extends State<PayPage> with WidgetsBindingObserver {
  var titles = ['正在支付', '支付成功', '支付失败'];
  var icons = ['images/svg/等待.svg', 'images/svg/成功.svg', 'images/svg/失败.svg'];
  var content = ['正在支付，请稍后…', '支付成功，即将自动跳转…', '支付失败'];
  int status = 0;
  SmartOrderBeanDataData order;
  bool showCancel = false;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
    Future.delayed(Duration(seconds: 1), () {
      pay();
    });
    Future.delayed(Duration(seconds: 3), () {
      showCancel = true;
      setState(() {
      });
    });
  }

  @override
  void dispose() {
    // TODO: implement dispose
    super.dispose();
    checkUnpaidThirdPartyOrders();
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: () {
        if(status!=1){
          resetOrder(widget.orderUID);
        }
        Navigator.pop(context, status);
        return Future.value(false);
      },
      child: Scaffold(
        backgroundColor: Colors.white,
        body: Column(
          children: [
            Container(
              color: Colors.white,
              child: SafeArea(
                bottom: false,
                child: Container(
                  height: 45,
                  width: double.infinity,
                  color: Colors.white,
                  child: Stack(
                    children: [
                      Text(
                        titles[status],
                        style: TextStyle(color: MyColors.c333333, fontSize: 16),
                      ),
                      Positioned(
                        left: 0,
                        child: GestureDetector(
                          onTap: () {
                            if(status!=1){
                              resetOrder(widget.orderUID);
                            }
                            Navigator.pop(context, status);
                          },
                          behavior: HitTestBehavior.translucent,
                          child: Transform.rotate(
                            angle: math.pi,
                            child: Padding(
                              padding: EdgeInsets.only(
                                  left: 16, right: 16, top: 8, bottom: 8),
                              child: SvgPicture.asset(
                                'images/svg/箭头.svg',
                                color: MyColors.c333333,
                                height: 14,
                              ),
                            ),
                          ),
                        ),
                      ),
                    ],
                    alignment: Alignment.center,
                  ),
                ),
              ),
            ),
            Container(
              height: 10,
              color: MyColors.cF7F7F7,
            ),
            Expanded(
              child: status == 1
                  ? Column(
                      children: [
                        Expanded(
                          child: Column(
                            children: [
                              Container(
                                child: Text(
                                  '支付金额',
                                  style: TextStyle(
                                      color: MyColors.c333333,
                                      fontSize: 16,
                                      fontWeight: FontWeight.bold),
                                ),
                                margin: EdgeInsets.only(top: 25, bottom: 5),
                              ),
                              Text(
                                widget.couponData == null
                                    ? order.amount.toStringAsFixed(2)
                                    : NumUtil.subtract(order.amount,
                                                widget.couponData.amount) <
                                            0
                                        ? 0.0.toStringAsFixed(2)
                                        : NumUtil.subtract(order.amount,
                                                widget.couponData.amount)
                                            .toStringAsFixed(2),
                                style: TextStyle(
                                    color: MyColors.c333333,
                                    fontSize: 26,
                                    fontWeight: FontWeight.bold),
                              ),
                              Container(
                                margin: EdgeInsets.only(
                                  top: 5,
                                ),
                                child: MyViews().myText('支付时间：${order.payTime}',
                                    MyColors.c333333, 12),
                              ),
                              Container(
                                height: 0.5,
                                color: MyColors.cE7E7E7,
                                margin: EdgeInsets.only(
                                    left: 21, right: 21, top: 25, bottom: 10),
                              ),
                              Container(
                                margin: EdgeInsets.symmetric(horizontal: 21),
                                child: Row(
                                  children: [
                                    Container(
                                      decoration: BoxDecoration(
                                        color: MyColors.cFF4233,
                                        borderRadius: BorderRadius.circular(2),
                                      ),
                                      height: 16,
                                      width: 38,
                                      alignment: Alignment.center,
                                      child: MyViews()
                                          .myText('收款方', Colors.white, 10),
                                    ),
                                    Container(
                                      margin:
                                          EdgeInsets.only(left: 7, right: 5),
                                      child: ClipRRect(
                                        borderRadius:
                                            BorderRadius.circular(12.5),
                                        child: order.sellerUid == 0
                                            ? Image.asset(
                                                'images/app_logo.png',
                                                height: 25,
                                                width: 25,
                                              )
                                            : MyViews().netImg(
                                                imgURL(order.sellerPic),
                                                25,
                                                25),
                                      ),
                                    ),
                                    MyViews().myText(
                                        order.sellerUid == 0
                                            ? '平台'
                                            : '${order.sellerName.length > 12 ? order.sellerName.substring(0, 12) + '...' : order.sellerName}（${order.sellerUid}）',
                                        MyColors.c333333,
                                        14),
                                  ],
                                  mainAxisAlignment: MainAxisAlignment.start,
                                ),
                              ),
                              Container(
                                margin: EdgeInsets.symmetric(
                                    horizontal: 21, vertical: 10),
                                child: Row(
                                  children: [
                                    Container(
                                      decoration: BoxDecoration(
                                        color: MyColors.cFF4233,
                                        borderRadius: BorderRadius.circular(2),
                                      ),
                                      height: 16,
                                      width: 38,
                                      alignment: Alignment.center,
                                      child: MyViews()
                                          .myText('付款方', Colors.white, 10),
                                    ),
                                    Container(
                                      margin:
                                          EdgeInsets.only(left: 7, right: 5),
                                      child: ClipRRect(
                                        borderRadius:
                                            BorderRadius.circular(12.5),
                                        child: MyViews().netImg(
                                            imgURL(order.payerPic), 25, 25),
                                      ),
                                    ),
                                    MyViews().myText(
                                        '${order.payerName.length > 12 ? order.payerName.substring(0, 12) + '...' : order.payerName}（${order.payerUid}）',
                                        MyColors.c333333,
                                        14),
                                  ],
                                  mainAxisAlignment: MainAxisAlignment.start,
                                ),
                              )
                            ],
                          ),
                        ),
                        SafeArea(
                          child: Container(
                            color: Colors.white,
                            child: Column(
                              children: [
                                Container(
                                  height: 5,
                                  color: MyColors.cF7F7F7,
                                ),
                                Container(
                                  color: Colors.white,
                                  child: SafeArea(
                                    top: false,
                                    child: Container(
                                      padding:
                                          EdgeInsets.symmetric(horizontal: 37),
                                      color: Colors.white,
                                      width: double.infinity,
                                      height: 60,
                                      child: Row(
                                        children: [
                                          Expanded(
                                            child: GestureDetector(
                                              onTap: () {
                                                MyTools().toPage(
                                                    context, WalletPage(),
                                                    (then) {
                                                  Navigator.pop(
                                                      context, status);
                                                });
                                              },
                                              behavior:
                                                  HitTestBehavior.translucent,
                                              child: Container(
                                                  decoration: BoxDecoration(
                                                      borderRadius:
                                                          BorderRadius.only(
                                                        topLeft:
                                                            Radius.circular(20),
                                                        bottomLeft:
                                                            Radius.circular(20),
                                                      ),
                                                      border: Border.all(
                                                          color:
                                                              MyColors.cFF4233,
                                                          width: 1)),
                                                  height: 40,
                                                  child: MyViews().myText(
                                                      '查看流水',
                                                      MyColors.cFF4233,
                                                      14),
                                                  alignment: Alignment.center),
                                            ),
                                          ),
                                          Expanded(
                                            child: GestureDetector(
                                              onTap: () {
//                                                RootPageView().bNIndex = 0;
//                                                MyTools().toPage(context, RootPage(), (then){});
                                                Navigator.pop(context, status);
                                              },
                                              behavior:
                                                  HitTestBehavior.translucent,
                                              child: Container(
                                                  decoration: BoxDecoration(
                                                      borderRadius:
                                                          BorderRadius.only(
                                                        topRight:
                                                            Radius.circular(20),
                                                        bottomRight:
                                                            Radius.circular(20),
                                                      ),
                                                      color: MyColors.cFF4233),
                                                  height: 40,
                                                  child: MyViews().myText(
                                                      '返回首页', Colors.white, 14),
                                                  alignment: Alignment.center),
                                            ),
                                          )
                                        ],
                                      ),
                                    ),
                                  ),
                                )
                              ],
                            ),
                          ),
                          top: false,
                        ),
                      ],
                    )
                  : Center(
                      child: Column(
                        children: [
                          Expanded(
                            child: Column(
                              children: [
                                SvgPicture.asset(
                                  icons[status],
                                  height: 94,
                                  width: 94,
                                ),
                                Container(
                                  margin: EdgeInsets.only(top: 30),
                                  child: Text(
                                    content[status],
                                    style: TextStyle(
                                        color: MyColors.c666666, fontSize: 15),
                                  ),
                                ),
                              ],
                              mainAxisAlignment: MainAxisAlignment.center,
                            ),
                          ),
                          Expanded(child: Container()),
                        ],
                      ),
                    ),
            ),
            if (showCancel && status != 1)
              GestureDetector(
                onTap: (){
                  resetOrder(widget.orderUID);
                  Navigator.pop(context,2);
                },
                child: Container(
                  margin: EdgeInsets.symmetric(horizontal: 50,vertical: 50),
                  decoration: BoxDecoration(
                    color: MyColors.cFF4233,
                    borderRadius: BorderRadius.circular(20),
                  ),
                  height: 40,
                    child: Text('取消支付',style: TextStyle(color: Colors.white,fontSize: 16),),
                  alignment: Alignment.center,
                ),
              )
          ],
        ),
      ),
    );
  }

  pay() {
    EasyLoading.show();
    getUserWalletBalance((re, hE) {
      if (!hE) {
        UserBalanceEntity balance =
            UserBalanceEntity.fromJson(json.decode(re.data.toString()));
        MyCookie().balance = balance.data;
        double balanceAm = balanceDisplay(balance.data);
        if (widget.payWay == payWayWallet) {
          if (balanceAm >= widget.amount) {
            payWithWallet();
          } else {
            if (widget.couponData != null) {
              if (balanceAm + widget.couponData.amount >= widget.amount) {
                payWithWallet();
              } else {
                showToast('积分不足，请选择其他支付方式');
                status = 2;
                setState(() {});
              }
            } else {
              showToast('积分不足，请选择其他支付方式');
              status = 2;
              setState(() {});
            }
          }
        } else if (widget.payWay == payWayAliPay) {
          MyCookie().prefs.setInt('payWay', payWayAliPay);
          payWithAliPay();
        } else if (widget.payWay == payWayWeChat) {
          MyCookie().prefs.setInt('payWay', payWayWeChat);
          payByWeChat();
        }
      }
    }, (e) {}, context);
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    super.didChangeAppLifecycleState(state);
    if(status==1){
      return;
    }
    if (state == AppLifecycleState.paused) {
      print('AlipayPage went to Background');
      count = 0;
      status = 0;
      setState(() {});
    }
    if (state == AppLifecycleState.resumed) {
      print('AlipayPage came back to Foreground');
      if (Platform.isIOS) {
        count = 10;
        checkIfTheOrderIsPaid();
      }
    }
  }

  int count = 0;

  void checkIfTheOrderIsPaid() {
    MyDio().query({
      "key": "order",
      "filters": {
        "conditions": ["uid == ${widget.orderUID}"]
      },
      "dims": orderDims,
      "paging": [1, 1]
    }, (response, hasError) {
      if (!hasError) {
        SmartOrderBeanEntity entity = SmartOrderBeanEntity.fromJson(json.decode(response.data.toString()));
        if (entity.data.data[0].state == orderStatePaid ||
            entity.data.data[0].state == orderStateOtherPaid) {
          order = entity.data.data[0];
          status = 1;
          setState(() {});
          // Timer(Duration(seconds: 1), () {
          //   Navigator.pop(context, '支付成功');
          // });
        } else {
          if (count != 0) {
            Timer(Duration(seconds: 1), () {
              count--;
              checkIfTheOrderIsPaid();
            });
          } else {
            count = 10;
            status = 2;
            if (widget.cancelOrder) {
              revokePayOrder(widget.orderUID);
            } else {
              resetOrder(widget.orderUID);
            }
            setState(() {});
          }
        }
      }
    }, (error) {});
  }

  void payWithWallet() {
    payOrder(widget.couponData, payWayWallet, widget.orderUID, (re, hE) {
      if (!hE) {
        showToast('支付成功');
        count = 30;
        checkIfTheOrderIsPaid();
      }
    }, (e) {}, context);
  }

  void payWithAliPay() {
    payOrder(widget.couponData, payWayAliPay, widget.orderUID, (re, hE) {
      if (!hE) {
        PayByAlipayBeanEntity entity =
            PayByAlipayBeanEntity.fromJson(json.decode(re.data.toString()));
        EventBus().on('alipayPaymentCallback', (arg) {
          EventBus().off('alipayPaymentCallback');
          EasyLoading.dismiss();
          showToast('支付成功');
          EventBus().emit('reNoPayOrder');
          // Navigator.pop(context);
          count = 30;
          checkIfTheOrderIsPaid();
        });
        print(entity.data);
        EasyLoading.instance
          ..contentPadding = EdgeInsets.symmetric(horizontal: 20, vertical: 12)
          ..alignment = Alignment.center
          ..loadingStyle = EasyLoadingStyle.light
          ..contentMargin = EdgeInsets.all(20);
        aliPay(entity.data).then((value) {
          print(json.encode(value));
          AlipayResultBeanEntity e = AlipayResultBeanEntity.fromJson(json.decode(json.encode(value)));
          try {
            int r = int.parse(e.resultStatus);
            if (r == 9000) {
              count = 30;
              showToast('支付成功');
              checkIfTheOrderIsPaid();
            } else {
              showToast(aliPayResultStatus(r));
              if (widget.cancelOrder) {
                revokePayOrder(widget.orderUID);
              } else {
                resetOrder(widget.orderUID);
              }
              setState(() {
                status = 2;
              });
            }
          } catch (e) {
            EasyLoading.dismiss();
          }
        });
      }
    }, (e) {}, context);
  }

  void payByWeChat() {
    payOrder(widget.couponData, widget.payWay, widget.orderUID, (re, hE) {
      if (!hE) {
        PayByWeChatBeanEntity entity =
            PayByWeChatBeanEntity.fromJson(json.decode(re.toString()));
        EventBus().on('WeChatPaymentResponse', (arg) {
          if (arg) {
            count = 30;
            showToast('支付成功');
            checkIfTheOrderIsPaid();
          } else if (!arg) {
            showToast('支付失败');
            if (widget.cancelOrder) {
              revokePayOrder(widget.orderUID);
            } else {
              resetOrder(widget.orderUID);
            }
            status = 2;
            setState(() {});
          }
          EventBus().off('WeChatPaymentResponse');
        });
        payWithWeChat(
          appId: entity.data.appid,
          partnerId: entity.data.partnerid,
          prepayId: entity.data.prepayid,
          packageValue: entity.data.package,
          nonceStr: entity.data.noncestr,
          timeStamp: int.parse(entity.data.timestamp),
          sign: entity.data.sign,
        );
      }
    }, (e) {}, context);
  }
}