feat: support polka estimate fee.

core/btc/utils_test.go

@@ -104,3 +104,12 @@ func TestBatchTransactionStatus(t *testing.T) {
 	}
 	t.Log(statuses)
 }
+
+func TestSbtcDetail(t *testing.T) {
+	hashString := "efb7849f8f5a76da41faaa100977d189b025f1d01dee0fade87ffca4515af23a"
+	detail, err := FetchTransactionDetail(hashString, chainSignet)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log(detail)
+}

core/wallet/chain.go

@@ -218,6 +218,49 @@ func (c *PolkaChain) QueryBalanceXBTC(address string) (b *PolkaBalance, err erro
 	}, nil
 }
 
+// 查询交易的预估手续费
+// @param transaction 交易的构造对象
+func (c *PolkaChain) EstimateFeeForTransaction(transaction *Transaction, ss58 int) (s string, err error) {
+	s = "0"
+	wallet := mockWallet()
+	mockAddress, err := wallet.GetAddress(ss58)
+	if err != nil {
+		return
+	}
+
+	signData, err := transaction.GetSignDataFromChain(c, mockAddress)
+	if err != nil {
+		return
+	}
+	signature, err := wallet.Sign(signData, "")
+	if err != nil {
+		return
+	}
+	pubkey, err := wallet.GetPublicKey()
+	if err != nil {
+		return
+	}
+	sendTx, err := transaction.GetTx(pubkey, signature)
+	if err != nil {
+		return
+	}
+
+	cl, err := getPolkaClient(c.RpcUrl)
+
+	data := make(map[string]interface{})
+	err = client.CallWithBlockHash(cl.api.Client, &data, "payment_queryInfo", nil, sendTx)
+	if err != nil {
+		return
+	}
+
+	estimateFee, ok := data["partialFee"].(string)
+	if !ok {
+		return s, errors.New("get estimated fee result nil")
+	}
+
+	return estimateFee, nil
+}
+
 // 发起交易
 func (c *PolkaChain) SendRawTransaction(txHex string) (s string, err error) {
 	client, err := getPolkaClient(c.RpcUrl)

core/wallet/chain_test.go

@@ -1,6 +1,8 @@
 package wallet
 
-import "testing"
+import (
+	"testing"
+)
 
 func TestQueryBalance(t *testing.T) {
 	rpcUrl := "wss://testnet3.chainx.org"
@@ -120,3 +122,21 @@ func TestMINIScriptHash(t *testing.T) {
 
 	t.Log(scriptHash)
 }
+
+func TestEstimatedFee(t *testing.T) {
+	// rpcUrl := "https://rpc-minichain.coming.chat"
+	rpcUrl := "https://mainnet.chainx.org/rpc"
+	address := "5RNt3DACYRhwHyy9esTZXVvffkFL3pQHv4qoEMFVfDqeDEnH"
+	amount := "10000"
+
+	chain := NewPolkaChain(rpcUrl, "")
+	metadata, _ := chain.GetMetadataString()
+	tx, _ := NewTx(metadata)
+	transaction, _ := tx.NewBalanceTransferTx(address, amount)
+
+	fee, err := chain.EstimateFeeForTransaction(transaction, 44)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log(fee)
+}

core/wallet/wallet.go

@@ -3,6 +3,7 @@ package wallet
 import (
 	"encoding/json"
 	"fmt"
+
 	"github.com/centrifuge/go-substrate-rpc-client/v4/signature"
 	"github.com/centrifuge/go-substrate-rpc-client/v4/types"
 	"github.com/vedhavyas/go-subkey"
@@ -128,3 +129,11 @@ func (w *Wallet) GetPrivateKeyHex() (string, error) {
 	}
 	return types.HexEncodeToString(kyr.Seed()), nil
 }
+
+// 内置账号，主要用来给用户未签名的交易签一下名
+// 然后给用户去链上查询手续费，保护用户资产安全
+func mockWallet() *Wallet {
+	mnemonic := "infant carbon above canyon corn collect finger drip area feature mule autumn"
+	w, _ := NewWallet(mnemonic)
+	return w
+}