/// <summary>
/// Prepare deposit with given tokens to the child chain
/// </summary>
/// <param name="profileFrom">profile of the sender</param>
/// <param name="currency">transaction currency</param>
/// <param name="data">data to prepare (amount for ERC20, tokenid for ERC721)</param>
/// <returns></returns>
public async Task <BCTransaction> PrepareDeposit(Profile profileFrom, string currency, BigInteger data)
{
if (rootChainContract != null)
{
Nethereum.Signer.Transaction approveTx = null;
var currencyType = await GetCurrencyType(currency);
var tokenHandler = web3.Eth.GetContractHandler(currency);
if (!IsFungibleCurrency(currencyType))
{
// TODO approve one item (ApproveFunction) or all (SetApprovalForAllFunction)?
var approveFunc = tokenHandler.GetFunction <Nethereum.StandardNonFungibleTokenERC721.ContractDefinition.ApproveFunction>();
var approveInput = new Nethereum.StandardNonFungibleTokenERC721.ContractDefinition.ApproveFunction();
approveInput.To = rootChainContract.Address;
approveInput.TokenId = data;
approveTx = await ContractHelper.CreateTransaction(web3, profileFrom.ID, BigInteger.Zero, approveFunc, approveInput);
}
else
{
var approveFunc = tokenHandler.GetFunction <Nethereum.StandardTokenEIP20.ContractDefinition.ApproveFunction>();
var approveInput = new Nethereum.StandardTokenEIP20.ContractDefinition.ApproveFunction();
approveInput.Spender = rootChainContract.Address;
approveInput.Value = data;
approveTx = await ContractHelper.CreateTransaction(web3, profileFrom.ID, BigInteger.Zero, approveFunc, approveInput);
}
string signedApproveTx = await SignTransaction(profileFrom, approveTx);
return(await SubmitTransactionOnRootChain(web3, signedApproveTx));
}
return(null);
}