internal async Task LoadDataAsync()
{
IsBusy = true;
try
{
await Task.Run(() =>
{
try
{
var response = PolkadotApi.GetStorage(new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY"), "ProductTracking", "ShipmentsOfOrganization");
var shipments = PolkadotApi.Serializer.Deserialize <ShipmentIdList>(response.HexToByteArray());
var shipmentsObs = new ObservableCollection <ShipmentInfo>(shipments.ShipmentIds.Select(s => new ShipmentInfo {
ShipmentId = s.ToString()
}));
Device.BeginInvokeOnMainThread(() => Shipments = shipmentsObs);
}
catch (Exception ex)
{
Trace.WriteLine(ex);
}
});
}
finally
{
IsBusy = false;
}
}
public override void OnNavigatedFrom(INavigationParameters parameters)
{
if (!string.IsNullOrEmpty(transactionSid))
{
PolkadotApi.UnsubscribeStorage(transactionSid);
}
}
private void QueryChainState()
{
try
{
if (!App.IsPolkadotApiConnected)
{
App.ConnectToNode();
}
var response = PolkadotApi.GetStorage(new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY"), "ProductRegistry", "ProductsOfOrganization");
var products = PolkadotApi.Serializer.Deserialize <ProductIdList>(response.HexToByteArray());
foreach (var product in products.ProductIds)
{
Trace.WriteLine(product);
}
var extrinsicExtensions = PolkadotApi.GetMetadata(new Polkadot.Data.GetMetadataParams()).GetExtrinsicExtension();
foreach (var ext in extrinsicExtensions)
{
Trace.WriteLine(ext);
}
}
catch (System.Exception ex)
{
Trace.WriteLine(ex);
}
}
private async void SubmitRegisterProductExtrinsicAsync()
{
IsBusy = true;
try
{
if (!App.IsPolkadotApiConnected)
{
App.ConnectToNode();
}
_ = Task.Run(async() =>
{
try
{
var ser = PolkadotApi.Serializer;
var sender = new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY");
var pub = AddressUtils.GetPublicKeyFromAddr(sender);
var secret = "0x33A6F3093F158A7109F679410BEF1A0C54168145E0CECB4DF006C1C2FFFB1F09925A225D97AA00682D6A59B95B18780C10D7032336E88F3442B42361F4A66011";
var encodedExtrinsic = ser.Serialize(new RegisterProductCall(
new Identifier("00012345678905"), pub,
//Empty.Instance
//OneOf.OneOf<Empty, ProductPropertyList>.FromT0(Empty.Instance)
new ProductPropertyList(new[] {
new ProductProperty(
new Identifier("name"),
new Identifier("Chocolate frog")
)
})
)
);
Trace.WriteLine(encodedExtrinsic.ToPrefixedHexString());
var tcs = new TaskCompletionSource <string>();
var sid = PolkadotApi.SubmitAndSubcribeExtrinsic(encodedExtrinsic, "ProductRegistry", "register_product", sender, secret, str => tcs.SetResult(str));
Trace.WriteLine(sid);
var result = await tcs.Task.WithTimeout(TimeSpan.FromMinutes(1)).ConfigureAwait(false);
PolkadotApi.UnsubscribeStorage(sid);
Trace.WriteLine(result);
}
catch (Exception ex)
{
Trace.WriteLine(ex);
}
});
}
catch (System.Exception ex)
{
Trace.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
protected T GetValueFromStorageMap <T>(string module, string storageMap, object key)
{
var param = PolkadotApi.Serializer.Serialize(key);
var paramKey = Hash.GetStorageKey(Hasher.BLAKE2, param, param.Length, PolkadotApi.Serializer);
var response = PolkadotApi.GetStorage(paramKey.Concat(param).ToArray(), module, storageMap);
return(PolkadotApi.Serializer.Deserialize <T>(response.HexToByteArray()));
}
private async void SubmitTrackShipmentExtrinsicAsync()
{
IsBusy = true;
try
{
if (!App.IsPolkadotApiConnected)
{
App.ConnectToNode();
}
_ = Task.Run(async() =>
{
try
{
var ser = PolkadotApi.Serializer;
var sender = new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY");
//var pub = AddressUtils.GetPublicKeyFromAddr(sender);
var secret = "0x33A6F3093F158A7109F679410BEF1A0C54168145E0CECB4DF006C1C2FFFB1F09925A225D97AA00682D6A59B95B18780C10D7032336E88F3442B42361F4A66011";
var shipmentId = ser.Serialize(new Identifier("S0002"));
var operation = Scale.EncodeCompactInteger(new BigInteger((int)ShippingOperation.Scan));
var timestamp = Scale.EncodeCompactInteger(DateTimeOffset.UtcNow.ToUnixTimeMilliseconds());
var emptyArgs = new byte[2];
var buf = new byte[shipmentId.Length + operation.Length + timestamp.Length + emptyArgs.Length];
shipmentId.CopyTo(buf.AsMemory());
operation.Bytes.CopyTo(buf.AsMemory(shipmentId.Length));
timestamp.Bytes.CopyTo(buf.AsMemory(shipmentId.Length + (int)operation.Length));
emptyArgs.CopyTo(buf.AsMemory(shipmentId.Length + (int)operation.Length + (int)timestamp.Length));
var tcs = new TaskCompletionSource <string>();
var sid = PolkadotApi.SubmitAndSubcribeExtrinsic(buf, "ProductTracking", "TrackShipment", sender, secret, str => tcs.SetResult(str));
Trace.WriteLine(sid);
var result = await tcs.Task.WithTimeout(TimeSpan.FromSeconds(30)).ConfigureAwait(false);
PolkadotApi.UnsubscribeStorage(sid);
Trace.WriteLine(result);
}
catch (Exception ex)
{
Trace.WriteLine(ex);
}
});
}
catch (System.Exception ex)
{
Trace.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
private void SubmitTransferExtrinsic()
{
IsBusy = true;
try
{
if (!App.IsPolkadotApiConnected)
{
App.ConnectToNode();
}
_ = Task.Run(async() =>
{
try
{
var sender = new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY");
//var pub = AddressUtils.GetPublicKeyFromAddr(sender);
var secret = "0x33A6F3093F158A7109F679410BEF1A0C54168145E0CECB4DF006C1C2FFFB1F09925A225D97AA00682D6A59B95B18780C10D7032336E88F3442B42361F4A66011";
var recipient = "5Ef1wcrhb5CVyZjpdYh9Keg81tgUPcsYi9uhNHC9uqjo7956";
var pub = AddressUtils.GetPublicKeyFromAddr(recipient);
var compactAmount = Scale.EncodeCompactInteger(BigInteger.Parse("10"));
var buf = new byte[pub.Bytes.Length + compactAmount.Bytes.Length];
pub.Bytes.CopyTo(buf.AsMemory());
compactAmount.Bytes.CopyTo(buf.AsMemory(pub.Bytes.Length));
Trace.WriteLine("Transfer Buf: " + buf.ToPrefixedHexString());
var call = new TransferCall(pub, BigInteger.Parse("10"));
var encodedCall = PolkadotApi.Serializer.Serialize(call);
Trace.WriteLine("Transfer Call: " + encodedCall.ToPrefixedHexString());
var tcs = new TaskCompletionSource <string>();
var sid = PolkadotApi.SubmitAndSubcribeExtrinsic(encodedCall, "balances", "transfer", sender, secret, str => tcs.SetResult(str));
Trace.WriteLine(sid);
var result = await tcs.Task.WithTimeout(TimeSpan.FromSeconds(30));
PolkadotApi.UnsubscribeStorage(sid);
Trace.WriteLine(result);
}
catch (Exception ex)
{
Trace.WriteLine(ex);
}
});
}
catch (System.Exception ex)
{
Trace.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
public void Dispose()
{
if (eventSubs != null)
{
EventAggregator.GetEvent <ApiStatusEvent>().Unsubscribe(eventSubs);
}
if (!string.IsNullOrEmpty(blockSid))
{
PolkadotApi.UnsubscribeBlockNumber(blockSid);
}
((IDisposable)blockSubject).Dispose();
}
private void SignTransfer()
{
IsBusy = true;
try
{
if (!App.IsPolkadotApiConnected)
{
App.ConnectToNode();
}
_ = Task.Run(async() =>
{
try
{
var sender = new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY");
//var pub = AddressUtils.GetPublicKeyFromAddr(sender);
var secret = "0x33A6F3093F158A7109F679410BEF1A0C54168145E0CECB4DF006C1C2FFFB1F09925A225D97AA00682D6A59B95B18780C10D7032336E88F3442B42361F4A66011";
var recipient = "5Ef1wcrhb5CVyZjpdYh9Keg81tgUPcsYi9uhNHC9uqjo7956";
var amount = BigInteger.Parse("10");
var tmp = Blake2B.ComputeHash(secret.HexToByteArray());
var tcs = new TaskCompletionSource <string>();
var sid = PolkadotApi.SignAndSendTransfer(sender.Symbols, secret, recipient, amount, res => tcs.SetResult(res));
Trace.WriteLine(sid);
var result = await tcs.Task.WithTimeout(TimeSpan.FromSeconds(30));
PolkadotApi.UnsubscribeStorage(sid);
Trace.WriteLine(result);
}
catch (Exception ex)
{
Trace.WriteLine(ex);
}
});
}
catch (System.Exception ex)
{
Trace.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
public PeersInfo GetSystemPeers()
{
return(PolkadotApi.GetSystemPeers());
}
public SystemInfo GetSystemInfo()
{
return(PolkadotApi.GetSystemInfo());
}
private async Task TrackShipmentAsync(ShippingOperation operation)
{
TransactionProgress = 0.0f;
TransactionStatus = "";
await Task.Run(() =>
{
try
{
var ser = PolkadotApi.Serializer;
//TODO: Implement account management
var sender = new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY");
var secret = "0x33A6F3093F158A7109F679410BEF1A0C54168145E0CECB4DF006C1C2FFFB1F09925A225D97AA00682D6A59B95B18780C10D7032336E88F3442B42361F4A66011";
var encodedExtrinsic = ser.Serialize(
new TrackShipmentCall(
new Identifier(ShipmentId),
(int)operation,
DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
new ReadPoint(),
new ReadingList()
)
);
Trace.WriteLine(encodedExtrinsic.ToPrefixedHexString());
transactionSid = PolkadotApi.SubmitAndSubcribeExtrinsic(encodedExtrinsic,
"ProductTracking", "track_shipment", sender, secret, response =>
{
Trace.WriteLine(response);
var res = JObject.Parse(response);
if (res.Value <string>("subscription") != transactionSid ||
!res.ContainsKey("result"))
{
return;
}
Device.BeginInvokeOnMainThread(() =>
{
TransactionInProgress = true;
var result = res["result"];
if (result is JValue value && (string)value.Value == "ready")
{
TransactionStatus = "valid";
TransactionProgress = 0.25f;
}
else if (result is JObject resObj)
{
if (resObj.ContainsKey("broadcast"))
{
TransactionStatus = "broadcasted to peers";
TransactionProgress = 0.5f;
}
else if (resObj.ContainsKey("inBlock"))
{
TransactionStatus = "in block " + resObj.Value <string>("inBlock");
TransactionProgress = 0.75f;
}
else if (resObj.ContainsKey("finalized"))
{
PolkadotApi.UnsubscribeStorage(transactionSid);
transactionSid = null;
TransactionStatus = "finalized";
TransactionProgress = 1.0f;
_ = Task.Delay(2000).ContinueWith(_ =>
Device.BeginInvokeOnMainThread(() =>
TransactionInProgress = false));
}
}
});
});
}
