server: Return the txid after pushing a transaction to the network

server/app/com/xsn/explorer/services/TransactionRPCService.scala

@@ -11,7 +11,7 @@ import com.xsn.explorer.util.Extensions.FutureOrExt
 import javax.inject.Inject
 import org.scalactic.{Bad, Good, One, Or}
 import org.slf4j.LoggerFactory
-import play.api.libs.json.{JsObject, JsString, JsValue}
+import play.api.libs.json.{JsObject, JsString, JsValue, Json}
 
 import scala.concurrent.{ExecutionContext, Future}
 import scala.util.control.NonFatal
@@ -125,8 +125,8 @@ class TransactionRPCService @Inject() (
   def sendRawTransaction(hexString: String): FutureApplicationResult[JsValue] = {
     val result = for {
       hex <- Or.from(HexString.from(hexString), One(InvalidRawTransactionError)).toFutureOr
-      _ <- xsnService.sendRawTransaction(hex).toFutureOr
-    } yield JsObject.empty + ("hex" -> JsString(hex.string))
+      txid <- xsnService.sendRawTransaction(hex).toFutureOr
+    } yield Json.obj("txid" -> JsString(txid))
 
     result.toFuture
   }

server/app/com/xsn/explorer/services/XSNService.scala

@@ -46,7 +46,7 @@ trait XSNService {
 
   def getUnspentOutputs(address: Address): FutureApplicationResult[JsValue]
 
-  def sendRawTransaction(hex: HexString): FutureApplicationResult[Unit]
+  def sendRawTransaction(hex: HexString): FutureApplicationResult[String]
 
   def cleanGenesisBlock(block: rpc.Block): rpc.Block = {
     Option(block)
@@ -394,7 +394,7 @@ class XSNServiceRPCImpl @Inject() (
         }
   }
 
-  override def sendRawTransaction(hex: HexString): FutureApplicationResult[Unit] = {
+  override def sendRawTransaction(hex: HexString): FutureApplicationResult[String] = {
     val errorCodeMapper = Map(
       -26 -> InvalidRawTransactionError,
       -22 -> InvalidRawTransactionError,
@@ -411,8 +411,7 @@ class XSNServiceRPCImpl @Inject() (
     server
         .post(body)
         .map { response =>
-          val maybe = getResult[String](response, errorCodeMapper)
-              .map { _.map(_ => ()) }
+          val maybe = getResult[String](response, errorCodeMapper).map { _.map(_.toString()) }
 
           maybe.getOrElse {
             logger.warn(s"Unexpected response from XSN Server, status = ${response.status}, response = ${response.body}")

server/test/com/xsn/explorer/helpers/DummyXSNService.scala

@@ -24,5 +24,5 @@ class DummyXSNService extends XSNService {
   override def getMasternodes(): FutureApplicationResult[List[rpc.Masternode]] = ???
   override def getMasternode(ipAddress: IPAddress): FutureApplicationResult[Masternode] = ???
   override def getUnspentOutputs(address: Address): FutureApplicationResult[JsValue] = ???
-  override def sendRawTransaction(hex: HexString): FutureApplicationResult[Unit] = ???
+  override def sendRawTransaction(hex: HexString): FutureApplicationResult[String] = ???
 }