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transaction.go
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transaction.go
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package bitcoin
import (
"math/big"
"github.com/tomochain/tomodex/swap/config"
"github.com/tomochain/tomodex/utils/binance"
)
// ValueToTomo need to convert BTC to ETH, because Tomo using ETH as unit
func (t *Transaction) ValueToTomo() string {
valueSat := new(big.Int).SetInt64(t.ValueSat)
valueBtc := new(big.Rat).Quo(new(big.Rat).SetInt(valueSat), satInBtc)
return valueBtc.FloatString(config.TomoAmountPrecision)
}
func (t *Transaction) ValueToWei() string {
lastPrice, err := binance.GetLastPrice("ETH", "BTC")
if err != nil {
logger.Error(err)
return ""
}
multiplier := new(big.Rat).SetInt64(1e10) // decimals of eth is 10^18, btc is 10^8
valueSat := new(big.Rat).SetInt64(t.ValueSat)
exchangeRate, ok := new(big.Rat).SetString(lastPrice)
if !ok {
return ""
}
logger.Infof("Last price: %s", lastPrice)
valueWei := new(big.Rat).Quo(valueSat, exchangeRate)
valueWei = valueWei.Mul(valueWei, multiplier)
return valueWei.FloatString(0)
}