Teso_Mobile/lib/Pages/Sub_Pages/CoinsPurchase/PurchaseingSilver.dart

import 'dart:convert';

import 'package:flutter/cupertino.dart';
import 'package:provider/provider.dart';
import 'package:teso/Classes/API Clasess/UserFinance.dart';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:teso/Classes/API%20Clasess/SilverPurchaseRequest.dart';
import 'package:teso/Classes/Payload.dart';
import 'package:teso/Classes/TesoUser.dart';
import 'package:teso/Notifications/NotificationPlugin.dart';
import 'package:teso/Pages/Sub_Pages/Payments/PaymentView.dart';
import 'package:teso/providers/user_provider.dart';
import 'package:teso/util/consts.dart';
import 'package:http/http.dart' as http;

class ProcessSilverPurchase extends StatefulWidget {
  final int silverAmount;
  final String method;
  final double cost;
  final TesoUser user;

  const ProcessSilverPurchase({
    Key key,
    @required this.user,
    @required this.cost,
    @required this.method,
    @required this.silverAmount,
  }) : super(key: key);
  @override
  _ProcessSilverPurchaseState createState() => _ProcessSilverPurchaseState();
}

class _ProcessSilverPurchaseState extends State<ProcessSilverPurchase> {
  String processing = "Processing silver coin purchase";
  Future<void> purchaseCoin() async {
    try {
      if (widget.method != "goldcoins") {
        await Navigator.push(
          context,
          MaterialPageRoute(
              builder: (context) => PaymentView(
                    selectedUrl:
                        'https://expresspaygh.com/payment_api_auto.php?token=99356106a8bbaa43c9.217546426106a8bbaa4417.9361359096566106a8bbaa&orderid=213',
                  ),
              maintainState: true),
        );
      } else {
        SharedPreferences prefs = await SharedPreferences.getInstance();
        String token = prefs.getString("tokensTeso");
        Map<String, String> requestHeaders = {
          'Content-type': 'application/json',
          'Authorization': token
        };

        SilverPurchaseRequest request = new SilverPurchaseRequest();
        request.coinamount = widget.silverAmount;
        request.amount = widget.cost;
        request.method = widget.method == "goldcoins" ? "gold" : "realcash";

        var register = serverLocation + 'coins/purchase_silver';
        var client = await http.post(Uri.parse(register),
            body: json.encode(request), headers: requestHeaders);
        Payload payload = new Payload();
        payload.loadID = "TESN003";
        payload.load1 = "SilverCoin Purchase";
        if (client.statusCode == 200) {
          var posts = jsonDecode(client.body);
          UserFinance finance = UserFinance.fromJSON(posts);
          TesoUser user = widget.user;

          user.gold = finance.gold.toString();
          user.silver = finance.silver.toString();
          setState(() {
            processing =
                "${request.coinamount} silver coins successfully purchased !!!";
          });
          Provider.of<UserProvider>(context, listen: false).setUser(user);
          await notificationPlugin.showNotification(
            "Funds purchased",
            "You have successfully purchased ${request.coinamount} silver coins",
            payload.toString(),
          );
        } else if (client.statusCode == 300) {
          await notificationPlugin.showNotification(
            "Insufficient Funds",
            "Unable to purchase silver coins due to insufficient funds",
            payload.toString(),
          );
          setState(() {
            processing = "Insufficient funds to complete transaction";
          });
        } else {
          setState(() {
            processing =
                "An error occurred while processing purchase, please try again later";
          });
        }
      }
    } catch (e) {
      setState(() {
        processing =
            "An error occurred while processing purchase, please try again later";
      });
    }
    Future.delayed(Duration(seconds: 5), () => Navigator.pop(context));
  }

  @override
  void initState() {
    super.initState();
    purchaseCoin();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Container(
          width: 200,
          height: 200,
          child: Column(
            children: [
              Container(
                child: processing == "Processing silver coin purchase"
                    ? CupertinoActivityIndicator(
                        animating: true,
                        radius: 15,
                      )
                    : processing.contains("successfully")
                        ? Icon(
                            Icons.check_circle,
                            color: Colors.green,
                          )
                        : Icon(
                            Icons.error,
                            color: Colors.red,
                          ),
              ),
              Container(
                child: Text(processing),
              ),
            ],
          ),
        ),
      ),
    );
  }
}