walletrpc: add list sweeps to rpc and cli

lnrpc/rpc_utils.go

@@ -0,0 +1,53 @@
+package lnrpc
+
+import (
+	"encoding/hex"
+	"sort"
+
+	"github.com/lightningnetwork/lnd/lnwallet"
+)
+
+// RPCTransactionDetails returns a set of rpc transaction details.
+func RPCTransactionDetails(txns []*lnwallet.TransactionDetail) *TransactionDetails {
+	txDetails := &TransactionDetails{
+		Transactions: make([]*Transaction, len(txns)),
+	}
+
+	for i, tx := range txns {
+		var destAddresses []string
+		for _, destAddress := range tx.DestAddresses {
+			destAddresses = append(destAddresses, destAddress.EncodeAddress())
+		}
+
+		// We also get unconfirmed transactions, so BlockHash can be
+		// nil.
+		blockHash := ""
+		if tx.BlockHash != nil {
+			blockHash = tx.BlockHash.String()
+		}
+
+		txDetails.Transactions[i] = &Transaction{
+			TxHash:           tx.Hash.String(),
+			Amount:           int64(tx.Value),
+			NumConfirmations: tx.NumConfirmations,
+			BlockHash:        blockHash,
+			BlockHeight:      tx.BlockHeight,
+			TimeStamp:        tx.Timestamp,
+			TotalFees:        tx.TotalFees,
+			DestAddresses:    destAddresses,
+			RawTxHex:         hex.EncodeToString(tx.RawTx),
+		}
+	}
+
+	// Sort transactions by number of confirmations rather than height so
+	// that unconfirmed transactions (height =0; confirmations =-1) will
+	// follow the most recently set of confirmed transactions. If we sort
+	// by height, unconfirmed transactions will follow our oldest
+	// transactions, because they have lower block heights.
+	sort.Slice(txDetails.Transactions, func(i, j int) bool {
+		return txDetails.Transactions[i].NumConfirmations <
+			txDetails.Transactions[j].NumConfirmations
+	})
+
+	return txDetails
+}