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feat: support decode psbtHex & txHex detail.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| package btc | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strconv" | ||
|
|
||
| "github.com/btcsuite/btcd/blockchain" | ||
| "github.com/btcsuite/btcd/btcutil" | ||
| "github.com/btcsuite/btcd/chaincfg" | ||
| "github.com/btcsuite/btcd/txscript" | ||
| "github.com/btcsuite/btcd/wire" | ||
| "github.com/coming-chat/wallet-SDK/core/base" | ||
| "github.com/coming-chat/wallet-SDK/core/base/inter" | ||
| ) | ||
|
|
||
| type TxOut struct { | ||
| Hash string `json:"hash,omitempty"` | ||
| Index int64 `json:"index,omitempty"` | ||
|
|
||
| Value int64 `json:"value,omitempty"` | ||
| Address string `json:"address,omitempty"` | ||
| } | ||
|
|
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| type TxOutArray struct { | ||
| inter.AnyArray[*TxOut] | ||
| } | ||
|
|
||
| func (ta *TxOutArray) detailDesc() string { | ||
| desc := "" | ||
| for idx, out := range ta.AnyArray { | ||
| if out.Address != "" { | ||
| addr := out.Address | ||
| if len(addr) > 13 { | ||
| addr = addr[:5] + "..." + addr[len(addr)-5:] | ||
| } | ||
| valueBTC := btcutil.Amount(out.Value).String() | ||
| if idx == 0 { | ||
| desc += "\t" + addr + "\t" + valueBTC | ||
| } else { | ||
| desc += "\n\t" + addr + "\t" + valueBTC | ||
| } | ||
| } else { | ||
| if idx == 0 { | ||
| desc += "\thash: " + out.Hash + "\n" + "\tindex: " + strconv.FormatInt(out.Index, 10) | ||
| } else { | ||
| desc += "\n\thash: " + out.Hash + "\n" + "\tindex: " + strconv.FormatInt(out.Index, 10) | ||
| } | ||
| } | ||
| } | ||
| return desc | ||
| } | ||
|
|
||
| type TransactionDetail struct { | ||
| NetworkFee int64 `json:"networkFee"` | ||
| FeeRate float64 `json:"feeRate"` | ||
| Inputs *TxOutArray `json:"inputs"` | ||
| Outputs *TxOutArray `json:"outputs"` | ||
| } | ||
|
|
||
| func (td *TransactionDetail) JsonString() (*base.OptionalString, error) { | ||
| return base.JsonString(td) | ||
| } | ||
|
|
||
| func (td *TransactionDetail) Desc() string { | ||
| feeBTC := "" | ||
| feeRate := "" | ||
| if td.NetworkFee == 0 { | ||
| feeBTC = "Unknow" | ||
| feeRate = "Unknow" | ||
| } else { | ||
| feeBTC = btcutil.Amount(td.NetworkFee).String() | ||
| feeRate = fmt.Sprintf("%.2f sat/vB", td.FeeRate) | ||
| } | ||
|
|
||
| return fmt.Sprintf(`Network Fee: | ||
| %v | ||
| Network FeeRate: | ||
| %v | ||
| Inputs: | ||
| %v | ||
| Outputs: | ||
| %v`, feeBTC, feeRate, td.Inputs.detailDesc(), td.Outputs.detailDesc()) | ||
| } | ||
|
|
||
| func DecodePsbtTransactionDetail(psbtHex string, chainnet string) (d *TransactionDetail, err error) { | ||
| chainParams, err := netParamsOf(chainnet) | ||
| if err != nil { | ||
| return | ||
| } | ||
| packet, err := DecodePsbtTxToPacket(psbtHex) | ||
| if err != nil { | ||
| return | ||
| } | ||
| txFee, err := packet.GetTxFee() | ||
| if err != nil { | ||
| return | ||
| } | ||
| feeFloat := txFee.ToUnit(btcutil.AmountSatoshi) | ||
| vSize := virtualSize(packet.UnsignedTx) | ||
| feeRate := feeFloat / float64(vSize) | ||
|
|
||
| inputs := make([]*TxOut, len(packet.Inputs)) | ||
| for idx, in := range packet.Inputs { | ||
| switch { | ||
| case in.WitnessUtxo != nil: | ||
| inputs[idx], err = txOutFromWireTxOut(in.WitnessUtxo, chainParams) | ||
| if err != nil { | ||
| return | ||
| } | ||
| case in.NonWitnessUtxo != nil: | ||
| utxOuts := in.NonWitnessUtxo.TxOut | ||
| txIn := packet.UnsignedTx.TxIn[idx] | ||
| opIdx := txIn.PreviousOutPoint.Index | ||
| txOut := utxOuts[opIdx] | ||
| inputs[idx], err = txOutFromWireTxOut(txOut, chainParams) | ||
| if err != nil { | ||
| return | ||
| } | ||
| default: | ||
| return nil, fmt.Errorf("input %d has no UTXO information", | ||
| idx) | ||
| } | ||
| } | ||
|
|
||
| outputs := make([]*TxOut, len(packet.UnsignedTx.TxOut)) | ||
| for idx, out := range packet.UnsignedTx.TxOut { | ||
| outputs[idx], err = txOutFromWireTxOut(out, chainParams) | ||
| if err != nil { | ||
| return | ||
| } | ||
| } | ||
|
|
||
| return &TransactionDetail{ | ||
| NetworkFee: int64(feeFloat), | ||
| FeeRate: float64(feeRate), | ||
| Inputs: &TxOutArray{inputs}, | ||
| Outputs: &TxOutArray{outputs}, | ||
| }, nil | ||
| } | ||
|
|
||
| func DecodeTxHexTransactionDetail(txHex string, chainnet string) (detail *TransactionDetail, err error) { | ||
| chainParams, err := netParamsOf(chainnet) | ||
| if err != nil { | ||
| return | ||
| } | ||
| msgTx, err := DecodeTx(txHex) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // msgTx cannot get `fee`, `feeRate` | ||
|
|
||
| inputs := make([]*TxOut, len(msgTx.TxIn)) | ||
| for idx, in := range msgTx.TxIn { | ||
| inputs[idx] = &TxOut{ | ||
| Hash: in.PreviousOutPoint.Hash.String(), | ||
| Index: int64(in.PreviousOutPoint.Index), | ||
| } | ||
| } | ||
| outputs := make([]*TxOut, len(msgTx.TxOut)) | ||
| for idx, out := range msgTx.TxOut { | ||
| outputs[idx], err = txOutFromWireTxOut(out, chainParams) | ||
| if err != nil { | ||
| return | ||
| } | ||
| } | ||
|
|
||
| return &TransactionDetail{ | ||
| NetworkFee: 0, | ||
| FeeRate: 0, | ||
| Inputs: &TxOutArray{inputs}, | ||
| Outputs: &TxOutArray{outputs}, | ||
| }, nil | ||
| } | ||
|
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||
| func txOutFromWireTxOut(txout *wire.TxOut, params *chaincfg.Params) (*TxOut, error) { | ||
| pkobj, err := txscript.ParsePkScript(txout.PkScript) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| addr, err := pkobj.Address(params) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &TxOut{ | ||
| Value: txout.Value, | ||
| Address: addr.EncodeAddress(), | ||
| }, nil | ||
| } | ||
|
|
||
| // calculation reference: | ||
| // https://github.com/btcsuite/btcd/blob/569155bc6a502f45b4a514bc6b9d5f814a980b6c/mempool/policy.go#L382 | ||
| func virtualSize(tx *wire.MsgTx) int64 { | ||
| // vSize := (((baseSize * 3) + totalSize) + 3) / 4 | ||
| baseSize := int64(tx.SerializeSizeStripped()) | ||
| totalSize := int64(tx.SerializeSize()) | ||
| weight := (baseSize * (blockchain.WitnessScaleFactor - 1)) + totalSize | ||
| return (weight + blockchain.WitnessScaleFactor - 1) / blockchain.WitnessScaleFactor | ||
| } |
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