public static void ClaimPreloadGas(NeoSystem system, Neo.Wallets.Wallet wallet, Random random)
{
void SubmitTransaction(Func <Snapshot, WalletAccount, Transaction?> factory)
{
using var snapshot = Blockchain.Singleton.GetSnapshot();
var validators = snapshot.GetValidators();
if (validators.Length != 1)
{
throw new InvalidOperationException("Preload only supported for single-node blockchains");
}
var account = wallet.GetAccounts().Single(a => a.Contract.Script.IsMultiSigContract());
var tx = factory(snapshot, account);
if (tx == null)
{
throw new Exception("Attempted to submit null preload transaction");
}
var context = new ContractParametersContext(tx);
wallet.Sign(context);
if (!context.Completed)
{
throw new InvalidOperationException("could not complete signing of preload transaction");
}
var block = CreatePreloadBlock(wallet, random, tx);
var result = system.Blockchain.Ask <RelayResultReason>(block).Result;
if (result != RelayResultReason.Succeed)
{
throw new Exception($"Preload {tx.Type} transaction failed {result}");
}
}
SubmitTransaction((snapshot, account) => NodeUtility.MakeTransferTransaction(snapshot,
ImmutableHashSet.Create(account.ScriptHash), account.ScriptHash, Blockchain.GoverningToken.Hash, null));
// There needs to be least one block after the transfer transaction before submitting a GAS claim
var block = CreatePreloadBlock(wallet, random);
var result = system.Blockchain.Ask <RelayResultReason>(block).Result;
if (result != RelayResultReason.Succeed)
{
throw new Exception($"Preload transfer suffix block failed {result}");
}
SubmitTransaction((snapshot, account) => NodeUtility.MakeClaimTransaction(snapshot, account.ScriptHash,
Blockchain.GoverningToken.Hash));
}
public JObject OnGetUnspents(JArray @params)
{
JObject GetBalance(IEnumerable <Coin> coins, UInt256 assetId, string symbol)
{
var unspents = new JArray();
var total = Fixed8.Zero;
foreach (var coin in coins.Where(c => c.Output.AssetId == assetId))
{
var unspent = new JObject();
unspent["txid"] = coin.Reference.PrevHash.ToString().Substring(2);
unspent["n"] = coin.Reference.PrevIndex;
unspent["value"] = (double)(decimal)coin.Output.Value;
total += coin.Output.Value;
unspents.Add(unspent);
}
var balance = new JObject();
balance["asset_hash"] = assetId.ToString().Substring(2);
balance["asset_symbol"] = balance["asset"] = symbol;
balance["amount"] = (double)(decimal)total;
balance["unspent"] = unspents;
return(balance);
}
var address = @params[0].AsString().ToScriptHash();
string[] nativeAssetNames = { "GAS", "NEO" };
UInt256[] nativeAssetIds = { Blockchain.UtilityToken.Hash, Blockchain.GoverningToken.Hash };
using (var snapshot = Blockchain.Singleton.GetSnapshot())
{
var coins = NodeUtility.GetCoins(snapshot, ImmutableHashSet.Create(address)).Unspent();
var neoCoins = coins.Where(c => c.Output.AssetId == Blockchain.GoverningToken.Hash);
var gasCoins = coins.Where(c => c.Output.AssetId == Blockchain.UtilityToken.Hash);
JObject json = new JObject();
json["address"] = address.ToAddress();
json["balance"] = new JArray(
GetBalance(coins, Blockchain.GoverningToken.Hash, "NEO"),
GetBalance(coins, Blockchain.UtilityToken.Hash, "GAS"));
return(json);
}
}
private JObject OnShowCoins(JArray @params)
{
var address = @params[0].AsString().ToScriptHash();
using (var snapshot = Blockchain.Singleton.GetSnapshot())
{
var coins = NodeUtility.GetCoins(snapshot, ImmutableHashSet.Create(address));
return(new JArray(coins.Select(c =>
{
var j = new JObject();
j["state"] = (byte)c.State;
j["state-label"] = c.State.ToString();
j["reference"] = c.Reference.ToJson();
j["output"] = c.Output.ToJson(0);
return j;
})));
}
}
private JObject GetClaimable(JArray @params)
{
var address = @params[0].AsString().ToScriptHash();
using (var snapshot = Blockchain.Singleton.GetSnapshot())
{
var coins = NodeUtility.GetCoins(snapshot, ImmutableHashSet.Create(address));
var unclaimedCoins = coins.Unclaimed(Blockchain.GoverningToken.Hash);
var totalUnclaimed = Fixed8.Zero;
var claimable = new JArray();
foreach (var coin in unclaimedCoins)
{
var spentCoinState = snapshot.SpentCoins.TryGet(coin.Reference.PrevHash);
var startHeight = spentCoinState.TransactionHeight;
var endHeight = spentCoinState.Items[coin.Reference.PrevIndex];
var(generated, sysFee) = NodeUtility.CalculateClaimable(snapshot, coin.Output.Value, startHeight, endHeight);
var unclaimed = generated + sysFee;
totalUnclaimed += unclaimed;
var utxo = new JObject();
utxo["txid"] = coin.Reference.PrevHash.ToString().Substring(2);
utxo["n"] = coin.Reference.PrevIndex;
utxo["start_height"] = startHeight;
utxo["end_height"] = endHeight;
utxo["generated"] = (double)(decimal)generated;
utxo["sys_fee"] = (double)(decimal)sysFee;
utxo["unclaimed"] = (double)(decimal)(unclaimed);
claimable.Add(utxo);
}
JObject json = new JObject();
json["claimable"] = claimable;
json["address"] = address.ToAddress();
json["unclaimed"] = (double)(decimal)totalUnclaimed;
return(json);
}
}
private JObject GetUnclaimed(JArray @params)
{
var address = @params[0].AsString().ToScriptHash();
using (var snapshot = Blockchain.Singleton.GetSnapshot())
{
var coins = NodeUtility.GetCoins(snapshot, ImmutableHashSet.Create(address));
var unclaimedCoins = coins.Unclaimed(Blockchain.GoverningToken.Hash);
var unspentCoins = coins.Unspent(Blockchain.GoverningToken.Hash);
var unavailable = snapshot.CalculateBonus(
unspentCoins.Select(c => c.Reference),
snapshot.Height + 1);
var available = snapshot.CalculateBonus(unclaimedCoins.Select(c => c.Reference));
JObject json = new JObject();
json["unavailable"] = (double)(decimal)unavailable;
json["available"] = (double)(decimal)available;
json["unclaimed"] = (double)(decimal)(available + unavailable);
return(json);
}
}
