private async Task <Token> GetToken(Web3.Models.DTOs.Transaction transaction, MongoRepository <Token> tokenRepository)
{
return(await tokenRepository.GetAsync(x => x.Address == transaction.To));
}
public async Task <TokenTransaction> GetTokenData(Web3.Models.DTOs.Transaction transaction, MongoRepository <Token> tokenRepository, MongoRepository <Price> priceRepository)
{
var input = transaction.Input;
if (string.IsNullOrEmpty(input))
{
return(null);
}
if (input.Length < 10)
{
return(null);
}
var token = await GetToken(transaction, tokenRepository);
if (token == null)
{
return(null);
}
var price = await GetPriceAsync(token, priceRepository);
var method = GetMethod(input.Substring(0, 10));
if (string.IsNullOrEmpty(method))
{
return(null);
}
var parameters = GetParameters(input.Substring(10));
if (parameters.Length == 0)
{
throw new Exception("No parameters found in the input.");
}
TokenTransaction tokenTransaction = null;
switch (method)
{
case "approve":
tokenTransaction = new TokenTransaction()
{
Method = method,
ContractAddress = token.Address,
Name = token.Name,
Symbol = token.Symbol,
From = transaction.From,
To = GetAddressFromInputParameter(parameters[0]),
Value = parameters[1],
Decimals = token.Decimals,
PriceBtc = price != null ? price.PriceBtc : 0,
PriceUsd = price != null ? price.PriceUsd : 0,
PriceEur = price != null ? price.PriceEur : 0,
};
break;
case "transfer":
tokenTransaction = new TokenTransaction()
{
Method = method,
ContractAddress = token.Address,
Name = token.Name,
Symbol = token.Symbol,
From = transaction.From,
To = GetAddressFromInputParameter(parameters[0]),
Value = parameters[1],
Decimals = token.Decimals,
PriceBtc = price != null ? price.PriceBtc : 0,
PriceUsd = price != null ? price.PriceUsd : 0,
PriceEur = price != null ? price.PriceEur : 0,
};
break;
case "transferFrom":
tokenTransaction = new TokenTransaction()
{
Method = method,
ContractAddress = token.Address,
Name = token.Name,
Symbol = token.Symbol,
From = GetAddressFromInputParameter(parameters[0]),
To = GetAddressFromInputParameter(parameters[1]),
Value = parameters[2],
Decimals = token.Decimals,
PriceBtc = price != null ? price.PriceBtc : 0,
PriceUsd = price != null ? price.PriceUsd : 0,
PriceEur = price != null ? price.PriceEur : 0,
};
break;
case "sweep":
tokenTransaction = new TokenTransaction()
{
Method = method,
ContractAddress = GetAddressFromInputParameter(parameters[0]),
Name = token.Name,
Symbol = token.Symbol,
From = transaction.To,
To = transaction.From,
Value = parameters[1],
Decimals = token.Decimals,
PriceBtc = price != null ? price.PriceBtc : 0,
PriceUsd = price != null ? price.PriceUsd : 0,
PriceEur = price != null ? price.PriceEur : 0,
};
break;
case "mint":
tokenTransaction = new TokenTransaction()
{
Method = method,
ContractAddress = token.Address,
Name = token.Name,
Symbol = token.Symbol,
From = token.Address,
To = GetAddressFromInputParameter(parameters[0]),
Value = parameters[1],
Decimals = token.Decimals,
PriceBtc = price != null ? price.PriceBtc : 0,
PriceUsd = price != null ? price.PriceUsd : 0,
PriceEur = price != null ? price.PriceEur : 0,
};
break;
}
return(tokenTransaction);
}
