add tx "tree" to apitypes.Tx

api/types/apitypes.go

@@ -11,6 +11,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/decred/dcrd/blockchain/stake/v4"
 	chainjson "github.com/decred/dcrd/rpc/jsonrpc/types/v3"
 	"github.com/decred/dcrd/txscript/v4/stdscript"
 	"github.com/decred/dcrdata/v8/db/dbtypes"
@@ -84,8 +85,9 @@ type BlockTransactions struct {
 // Tx models TxShort with the number of confirmations and block info Block
 type Tx struct {
 	TxShort
-	Confirmations int64    `json:"confirmations"`
-	Block         *BlockID `json:"block,omitempty"`
+	Tree          stake.TxType `json:"tree"`
+	Confirmations int64        `json:"confirmations"`
+	Block         *BlockID     `json:"block,omitempty"`
 }
 
 // Vin is an alias for dcrd's rpc/jsonrpc/types/v3.Vin type.

db/dcrpg/pgblockchain.go

@@ -4827,6 +4827,19 @@ func (pgb *ChainDB) GetAPITransaction(txid *chainhash.Hash) *apitypes.Tx {
 		return nil
 	}
 
+	msgTx, err := txhelpers.MsgTxFromHex(txraw.Hex)
+	if err != nil {
+		log.Errorf("Cannot create MsgTx for tx %v: %v", txid.String(), err)
+		return nil
+	}
+
+	treasuryActive := true
+	if txraw.BlockHeight > 0 {
+		treasuryActive = txhelpers.IsTreasuryActive(pgb.chainParams.Net, txraw.BlockHeight)
+	}
+
+	txType := txhelpers.DetermineTxType(msgTx, treasuryActive)
+
 	tx := &apitypes.Tx{
 		TxShort: apitypes.TxShort{
 			TxID:     txraw.Txid,
@@ -4837,6 +4850,7 @@ func (pgb *ChainDB) GetAPITransaction(txid *chainhash.Hash) *apitypes.Tx {
 			Vin:      make([]apitypes.Vin, len(txraw.Vin)),
 			Vout:     make([]apitypes.Vout, len(txraw.Vout)),
 		},
+		Tree:          txType,
 		Confirmations: txraw.Confirmations,
 		Block: &apitypes.BlockID{
 			BlockHash:   txraw.BlockHash,