davide
bfee0dde03
Camera2 + ZXing.Net 0.16.9 activity (ScannerActivity) that captures JPEG frames at ~2.5 fps and decodes QR codes without Xamarin dependencies. Result is returned to MainActivity via OnActivityResult/TaskCompletionSource. PlatformServices.ScanQrAsync seam wires Android head to shared App layer; ScanQrCommand in the Send ViewModel strips BIP21 URI scheme/query parameters. CAMERA permission and uses-feature added to AndroidManifest.
113 lines
3.3 KiB
C#
113 lines
3.3 KiB
C#
using System;
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using System.Threading.Tasks;
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using CommunityToolkit.Mvvm.ComponentModel;
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using CommunityToolkit.Mvvm.Input;
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using NBitcoin;
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using PalladiumWallet.App.Services;
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using PalladiumWallet.Core.Chain;
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using PalladiumWallet.Core.Net;
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using PalladiumWallet.Core.Wallet;
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namespace PalladiumWallet.App.ViewModels;
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public partial class MainWindowViewModel
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{
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[ObservableProperty]
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private string sendTo = "";
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[ObservableProperty]
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private string sendAmount = "";
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[ObservableProperty]
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private string sendFeeRate = "1";
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[ObservableProperty]
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private bool sendAll;
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[ObservableProperty]
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private string sendPreview = "";
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[ObservableProperty]
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private bool hasPendingSend;
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[RelayCommand]
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private async Task ScanQr()
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{
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if (PlatformServices.ScanQrAsync is not { } scan) return;
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var raw = await scan();
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if (string.IsNullOrWhiteSpace(raw)) return;
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// Gestisce URI tipo "palladium:ADDRESS?amount=X" estraendo solo l'indirizzo
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var address = raw.Contains(':') ? raw.Split(':')[1] : raw;
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if (address.Contains('?')) address = address.Split('?')[0];
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SendTo = address.Trim();
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}
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[RelayCommand]
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private async Task PrepareSend()
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{
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if (_account is null || _doc?.Cache is null)
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{
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SendPreview = "Sincronizza prima di inviare.";
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return;
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}
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try
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{
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if (_lastTransactions is null)
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{
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SendPreview = "Connettiti al server e sincronizza prima di inviare.";
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return;
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}
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var destination = BitcoinAddress.Create(SendTo.Trim(), PalladiumNetworks.For(Net));
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long amount = 0;
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if (!SendAll && !CoinAmount.TryParseIn(SendAmount, _config.Unit, out amount))
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{
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SendPreview = "Importo non valido.";
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return;
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}
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if (!decimal.TryParse(SendFeeRate, out var feeRate) || feeRate <= 0)
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{
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SendPreview = "Fee rate non valido.";
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return;
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}
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_pendingSend = new TransactionFactory(_account).Build(
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_doc.Cache.Utxos, _lastTransactions, destination, amount, feeRate,
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_doc.Cache.NextChangeIndex, SendAll);
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SendPreview = $"txid {_pendingSend.Txid[..16]}… · " +
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$"fee {Fmt(_pendingSend.Fee.Satoshi)} " +
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$"({_pendingSend.Transaction.GetVirtualSize()} vB)" +
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(_pendingSend.Signed ? "" : " · NON firmata (watch-only)");
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HasPendingSend = _pendingSend.Signed;
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}
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catch (Exception ex)
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{
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_pendingSend = null;
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HasPendingSend = false;
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SendPreview = $"Errore: {ex.Message}";
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}
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await Task.CompletedTask;
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}
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[RelayCommand]
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private async Task ConfirmSend()
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{
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if (_pendingSend is null || _client is null)
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return;
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try
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{
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var txid = await _client.BroadcastAsync(_pendingSend.ToHex());
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SendPreview = $"Trasmessa: {txid}";
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SendTo = SendAmount = "";
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_pendingSend = null;
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HasPendingSend = false;
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await ConnectAndSync();
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}
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catch (Exception ex)
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{
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SendPreview = $"Errore broadcast: {ex.Message}";
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}
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}
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}
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