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cmd/quote: add asset rate to display

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sputn1ck 2025-01-22 10:00:03 +01:00
parent 95aae0e800
commit d0191d29fe
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2 changed files with 62 additions and 0 deletions
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7
cmd/loop/main.go
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@ -103,6 +103,13 @@ const (
// Amount: 50 USD
assetAmtFmt = "%-36s %12d %s\n"
// rateFmt formats an exchange rate into a one line string, intended to
// prettify the terminal output. For Instance,
// fmt.Printf(f, "Exchange rate:", rate, "USD")
// prints out as,
// Exchange rate: 0.0002 USD/SAT
rateFmt = "%-36s %12.4f %s/SAT\n"
// blkFmt formats the number of blocks into a one line string, intended
// to prettify the terminal output. For Instance,
// fmt.Printf(f, "Conf target", target)

55
cmd/loop/quote.go
View file

@ -9,6 +9,9 @@ import (
"github.com/btcsuite/btcd/btcutil"
"github.com/lightninglabs/loop"
"github.com/lightninglabs/loop/looprpc"
"github.com/lightninglabs/taproot-assets/rfqmath"
"github.com/lightninglabs/taproot-assets/taprpc/rfqrpc"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/routing/route"
"github.com/urfave/cli"
)
@ -268,7 +271,19 @@ func printQuoteOutResp(req *looprpc.QuoteRequest,
totalFee := resp.HtlcSweepFeeSat + resp.SwapFeeSat
if resp.AssetRfqInfo != nil {
assetAmtSwap, err := getAssetAmt(
req.Amt, resp.AssetRfqInfo.SwapAssetRate,
)
if err != nil {
fmt.Printf("Error converting asset amount: %v\n", err)
return
}
exchangeRate := float64(assetAmtSwap) / float64(req.Amt)
fmt.Printf(assetAmtFmt, "Send off-chain:",
assetAmtSwap, resp.AssetRfqInfo.AssetName)
fmt.Printf(rateFmt, "Exchange rate:",
exchangeRate, resp.AssetRfqInfo.AssetName)
fmt.Printf(assetAmtFmt, "Limit Send off-chain:",
resp.AssetRfqInfo.MaxSwapAssetAmt,
resp.AssetRfqInfo.AssetName)
} else {
@ -288,7 +303,17 @@ func printQuoteOutResp(req *looprpc.QuoteRequest,
fmt.Printf(satAmtFmt, "Estimated total fee:", totalFee)
fmt.Println()
if resp.AssetRfqInfo != nil {
assetAmtPrepay, err := getAssetAmt(
resp.PrepayAmtSat, resp.AssetRfqInfo.PrepayAssetRate,
)
if err != nil {
fmt.Printf("Error converting asset amount: %v\n", err)
return
}
fmt.Printf(assetAmtFmt, "No show penalty (prepay):",
assetAmtPrepay,
resp.AssetRfqInfo.AssetName)
fmt.Printf(assetAmtFmt, "Limit no show penalty (prepay):",
resp.AssetRfqInfo.MaxPrepayAssetAmt,
resp.AssetRfqInfo.AssetName)
} else {
@ -302,3 +327,33 @@ func printQuoteOutResp(req *looprpc.QuoteRequest,
time.Unix(int64(req.SwapPublicationDeadline), 0),
)
}
// getAssetAmt returns the asset amount for the given amount in satoshis and
// the asset rate.
func getAssetAmt(amt int64, assetRate *looprpc.FixedPoint) (
uint64, error) {
askAssetRate, err := unmarshalFixedPoint(assetRate)
if err != nil {
return 0, err
}
msatAmt := lnwire.MilliSatoshi((amt * 1000))
assetAmt := rfqmath.MilliSatoshiToUnits(msatAmt, *askAssetRate)
return assetAmt.ToUint64(), nil
}
// unmarshalFixedPoint converts an RPC FixedPoint to a BigIntFixedPoint.
func unmarshalFixedPoint(fp *looprpc.FixedPoint) (*rfqmath.BigIntFixedPoint,
error) {
// convert the looprpc.FixedPoint to a rfqrpc.FixedPoint
rfqrpcFP := &rfqrpc.FixedPoint{
Coefficient: fp.Coefficient,
Scale: fp.Scale,
}
return rfqrpc.UnmarshalFixedPoint(rfqrpcFP)
}