mhunt_launcher/lib/Widgets/Home/AccountsPage/BuyDialog.dart

import 'package:flutter/material.dart';
import 'package:mhunt_launcher/Widgets/CustomWidgets.dart';
import 'package:toastification/toastification.dart';
import 'package:url_launcher/url_launcher_string.dart';

import '../../../Backend/Backend.dart';
import '../../../Backend/DebugHelper.dart';
import '../../../Shared/Dialogs.dart';
import '../../../Shared/Helpers.dart';
import '../../../Shared/TextStyles.dart';

Route<Object?> buyTicketsDialogBuilder(
    BuildContext context, Object? arguments) {
  return DialogRoute<void>(
    context: context,
    builder: (BuildContext context) {
      return AlertDialog(
        content: PurchaseTicketsContent(),
      );
    },
  );
}

class PurchaseTicketsContent extends StatefulWidget {
  const PurchaseTicketsContent({super.key});

  @override
  State<PurchaseTicketsContent> createState() => _PurchaseTicketsContentState();
}

int ticketCount = 1;
bool isLoading = false;
class _PurchaseTicketsContentState extends State<PurchaseTicketsContent> {

  @override
  void initState() {
    // TODO: implement initState
    super.initState();

    isLoading=false;
    setState(() {

    });
  }

  @override
  Widget build(BuildContext context) {
    return isLoading ? Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Text("Loading... Please wait"),
      ],
    ) :BuyWindow(
        context: context,
        onTicketDecrease: () => {
              setState(() {
                if (ticketCount > 1) ticketCount--;
              })
        },
        onTicketIncrease: () => {
              setState(() {
                ticketCount++;
              })
        },
      onPurchase: ()async{
          setState(() {
            isLoading=true;
          });

          dynamic result =await Backend.PurchaseTickets(ticketCount);

          if(result['status'] == "Success"){
            toastification.show(
              context: context, // optional if you use ToastificationWrapper
              title: Text('$ticketCount Tickets purchased successfully, Click to show Transaction'),
              callbacks: ToastificationCallbacks(
                onTap: (toastItem){
                  launchUrlString('https://explorer.solana.com/tx/${result['tx']}?cluster=devnet');
                }
              ),
              autoCloseDuration: const Duration(seconds: 10),
              style: ToastificationStyle.simple,
            );
          }

          Navigator.of(context).pop();

      }
    );
  }
}

Widget BuyWindow(
    {required BuildContext context,
    required Function() onTicketDecrease,
    required Function() onTicketIncrease,
    required Function() onPurchase
    }) {
  int totalCostLamports = Helpers.TICKET_PRICE * ticketCount;
  double totalCostSol = totalCostLamports / Helpers.LAMPORTS_PER_SOL;
  bool hasEnoughSol = Backend.SolBalance > totalCostLamports;
  Debug.Log(
      'I have ${Backend.SolBalance} LAMPORTS, Ticket price is ${totalCostLamports}, do I have enough? :${hasEnoughSol}');
  return Column(
    mainAxisSize: MainAxisSize.min,
    children: [
      Text(
        'Select an amount of Tickets you want to purchase',
      ),
      SizedBox(
        height: 20,
      ),
      Row(
        mainAxisAlignment: MainAxisAlignment.spaceAround,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              InkWell(
                onTap: onTicketDecrease,
                child: Icon(Icons.remove_circle),
              ),
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: Text(
                  '$ticketCount',
                  style: TextStyle(fontSize: 40),
                ),
              ),
              InkWell(
                onTap: onTicketIncrease,
                child: Icon(Icons.add_circle_rounded),
              ),
            ],
          ),
          Column(
            children: [
              Text(
                '${Helpers.trimTrailingZeros(totalCostSol)} SOL',
                style: TextStyles.titleTextStyle,
              ),
              (!hasEnoughSol
                  ? Text(
                      "Insufficient balance",
                      style: TextStyle(color: Colors.red),
                    )
                  : Container())
            ],
          ),
        ],
      ),
      Row(
        mainAxisAlignment: MainAxisAlignment.spaceAround,
        children: [
          (hasEnoughSol
              ? GlassButton(
                  onTap: onPurchase,
                  child: Text("Purchase"),
                  width: 250,
                  color: Colors.green)
              : GlassButton(
                  onTap: () {
                    launchUrlString(
                        '${Helpers.MOONPAY_URL}/?wallet=${Backend.pubKey}');
                  },
                  child: Text("Recharge"),
                  width: 250,
                  color: Colors.blue)),
        ],
      ),
      Padding(
        padding: const EdgeInsets.all(8.0),
        child: GlassButton(
            onTap: () {
              Navigator.of(context).pop();
            },
            child: Text("Cancel"),
            width: 150,
            color: Colors.red),
      )
    ],
  );
}