server: Add TransactionError

server/app/com/xsn/explorer/errors/transactionErrors.scala

@@ -0,0 +1,24 @@
+package com.xsn.explorer.errors
+
+import com.alexitc.playsonify.models.{FieldValidationError, InputValidationError, PublicError}
+import play.api.i18n.{Lang, MessagesApi}
+
+sealed trait TransactionError
+
+case object TransactionFormatError extends TransactionError with InputValidationError {
+
+  override def toPublicErrorList(messagesApi: MessagesApi)(implicit lang: Lang): List[PublicError] = {
+    val message = messagesApi("error.transaction.format")
+    val error = FieldValidationError("transactionId", message)
+    List(error)
+  }
+}
+
+case object TransactionNotFoundError extends TransactionError with InputValidationError {
+
+  override def toPublicErrorList(messagesApi: MessagesApi)(implicit lang: Lang): List[PublicError] = {
+    val message = messagesApi("error.transaction.notFound")
+    val error = FieldValidationError("transactionId", message)
+    List(error)
+  }
+}

server/conf/messages

@@ -1,3 +1,6 @@
 # https://www.playframework.com/documentation/latest/ScalaI18N
 
 xsn.server.unexpectedError=Unexpected error from the XSN network
+
+error.transaction.format=Invalid transaction format
+error.transaction.notFound=Transaction not found