server: Remove unnecessary endpoint "POST /transactions/latest"

server/app/com/xsn/explorer/data/TransactionDataHandler.scala

@@ -5,7 +5,6 @@ import com.alexitc.playsonify.models.ordering.{FieldOrdering, OrderingCondition}
 import com.alexitc.playsonify.models.pagination.{Limit, PaginatedQuery, PaginatedResult}
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
-import org.scalactic.Every
 
 import scala.language.higherKinds
 
@@ -30,7 +29,6 @@ trait TransactionDataHandler[F[_]] {
       limit: Limit,
       lastSeenTxid: Option[TransactionId]): F[List[TransactionWithValues]]
 
-  def getLatestTransactionBy(addresses: Every[Address]): F[Map[String, String]]
 }
 
 trait TransactionBlockingDataHandler extends TransactionDataHandler[ApplicationResult]

server/app/com/xsn/explorer/data/anorm/TransactionPostgresDataHandler.scala

@@ -8,7 +8,7 @@ import com.xsn.explorer.data.anorm.dao.TransactionPostgresDAO
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
 import javax.inject.Inject
-import org.scalactic.{Every, Good}
+import org.scalactic.Good
 import play.api.db.Database
 
 class TransactionPostgresDataHandler @Inject() (
@@ -70,10 +70,4 @@ class TransactionPostgresDataHandler @Inject() (
 
     Good(transactions)
   }
-
-  def getLatestTransactionBy(addresses: Every[Address]): ApplicationResult[Map[String, String]] = withConnection { implicit conn =>
-    val result = transactionPostgresDAO.getLatestTransactionBy(addresses)
-
-    Good(result)
-  }
 }

server/app/com/xsn/explorer/data/anorm/dao/TransactionPostgresDAO.scala

@@ -277,30 +277,6 @@ class TransactionPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderi
     ).as(parseTransactionOutput.*).flatten
   }
 
-  def getLatestTransactionBy(addresses: Every[Address])(implicit conn: Connection): Map[String, String] = {
-
-    import SqlParser._
-
-    val result = SQL(
-      s"""
-        |SELECT address, (
-        |  SELECT txid
-        |  FROM address_transaction_details
-        |  WHERE address = a.address
-        |  ORDER BY time DESC
-        |  LIMIT 1
-        |) AS txid
-        |FROM address_transaction_details a
-        |GROUP BY address
-        |HAVING address IN ({addresses});
-      """.stripMargin
-    ).on(
-      'addresses -> addresses.map(_.string).toList
-    ).as((str("address") ~ str("txid")).map(flatten).*)
-
-    result.toMap
-  }
-
   private def upsertTransaction(index: Int, transaction: Transaction)(implicit conn: Connection): Option[Transaction] = {
     SQL(
       """

server/app/com/xsn/explorer/data/async/TransactionFutureDataHandler.scala

@@ -8,7 +8,6 @@ import com.xsn.explorer.executors.DatabaseExecutionContext
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
 import javax.inject.Inject
-import org.scalactic.Every
 
 import scala.concurrent.Future
 
@@ -53,8 +52,4 @@ class TransactionFutureDataHandler @Inject() (
 
     blockingDataHandler.getByBlockhash(blockhash, limit, lastSeenTxid)
   }
-
-  override def getLatestTransactionBy(addresses: Every[Address]): FutureApplicationResult[Map[String, String]] = Future {
-    blockingDataHandler.getLatestTransactionBy(addresses)
-  }
 }

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

@@ -240,10 +240,6 @@ class TransactionService @Inject() (
     result.toFuture
   }
 
-  def getLatestTransactionBy(addresses: Every[Address]): FutureApplicationResult[Map[String, String]] = {
-    transactionFutureDataHandler.getLatestTransactionBy(addresses)
-  }
-
   private def getTransactionValue(vin: TransactionVIN): FutureApplicationResult[TransactionValue] = {
     val valueMaybe = for {
       value <- vin.value

server/app/controllers/TransactionsController.scala

@@ -1,6 +1,6 @@
 package controllers
 
-import com.xsn.explorer.models.request.{GetLatestTransactionRequest, SendRawTransactionRequest}
+import com.xsn.explorer.models.request.SendRawTransactionRequest
 import com.xsn.explorer.services.TransactionService
 import controllers.common.{MyJsonController, MyJsonControllerComponents}
 import javax.inject.Inject
@@ -23,8 +23,4 @@ class TransactionsController @Inject() (
   def sendRawTransaction() = publicInput { ctx: HasModel[SendRawTransactionRequest] =>
     transactionService.sendRawTransaction(ctx.model.hex)
   }
-
-  def getLatestByAddresses() = publicInput { ctx: HasModel[GetLatestTransactionRequest] =>
-    transactionService.getLatestTransactionBy(ctx.model.addresses)
-  }
 }

server/conf/routes

@@ -9,7 +9,6 @@ GET   /health                controllers.HealthController.check()
 GET   /transactions/:txid        controllers.TransactionsController.getTransaction(txid: String)
 GET   /transactions/:txid/raw    controllers.TransactionsController.getRawTransaction(txid: String)
 POST  /transactions              controllers.TransactionsController.sendRawTransaction()
-POST  /transactions/latest       controllers.TransactionsController.getLatestByAddresses()
 
 GET   /addresses/:address                            controllers.AddressesController.getBy(address: String)
 GET   /addresses/:address/transactions               controllers.AddressesController.getTransactions(address: String, offset: Int ?= 0, limit: Int ?= 10, orderBy: String ?= "")

server/test/com/xsn/explorer/data/TransactionPostgresDataHandlerSpec.scala

@@ -299,27 +299,6 @@ class TransactionPostgresDataHandlerSpec extends PostgresDataHandlerSpec with Be
     }
   }
 
-  "getLatestTransactionBy" should {
-    "return the relation address -> latest txid" in {
-      clearDatabase()
-      val blocks = blockList
-      blocks.map(createBlock)
-
-      val expected = Map(
-        "XcqpUChZhNkVDgQqFF9U4DdewDGUMWwG53" -> "41e315108dc2df60caddbc7e8740a5614217f996c96898019e69b3195fd7ee10",
-        "XdJnCKYNwzCz8ATv8Eu75gonaHyfr9qXg9" -> "1e591eae200f719344fc5df0c4286e3fb191fb8a645bdf054f9b36a856fce41e"
-      )
-
-      val addresses = Every(
-        createAddress("XdJnCKYNwzCz8ATv8Eu75gonaHyfr9qXg9"),
-        createAddress("XcqpUChZhNkVDgQqFF9U4DdewDGUMWwG53"),
-        createAddress("XcqpUChZhNkVDgQqFF9U4DdewDGUMWwG54"),
-      )
-      val result = dataHandler.getLatestTransactionBy(addresses).get
-      result mustEqual expected
-    }
-  }
-
   "getBy with scroll" should {
     val address = createAddress("XxQ7j37LfuXgsLD5DZAwFKhT3s2ZMkW86F")
     val blockhash = createBlockhash("0000000000bdbb23e28f79a49d29b41429737c6c7e15df40d1b1f1b35907ae34")

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

@@ -7,7 +7,6 @@ import com.alexitc.playsonify.models.pagination.{PaginatedQuery, PaginatedResult
 import com.xsn.explorer.data.TransactionBlockingDataHandler
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
-import org.scalactic.Every
 
 class TransactionDummyDataHandler extends TransactionBlockingDataHandler {
 
@@ -21,5 +20,4 @@ class TransactionDummyDataHandler extends TransactionBlockingDataHandler {
 
   override def getByBlockhash(blockhash: Blockhash, limit: pagination.Limit, lastSeenTxid: Option[TransactionId]): ApplicationResult[List[TransactionWithValues]] = ???
 
-  override def getLatestTransactionBy(addresses: Every[Address]): ApplicationResult[Map[String, String]] = ???
 }

server/test/controllers/TransactionsControllerSpec.scala

@@ -1,6 +1,6 @@
 package controllers
 
-import com.alexitc.playsonify.core.{ApplicationResult, FutureApplicationResult}
+import com.alexitc.playsonify.core.FutureApplicationResult
 import com.alexitc.playsonify.play.PublicErrorRenderer
 import com.xsn.explorer.data.TransactionBlockingDataHandler
 import com.xsn.explorer.errors.TransactionNotFoundError
@@ -9,9 +9,9 @@ import com.xsn.explorer.models._
 import com.xsn.explorer.models.rpc.Transaction
 import com.xsn.explorer.services.XSNService
 import controllers.common.MyAPISpec
-import org.scalactic.{Bad, Every, Good}
+import org.scalactic.{Bad, Good}
 import play.api.inject.bind
-import play.api.libs.json.{JsValue, Json}
+import play.api.libs.json.JsValue
 import play.api.test.Helpers._
 
 import scala.concurrent.Future
@@ -59,18 +59,7 @@ class TransactionsControllerSpec extends MyAPISpec {
     }
   }
 
-  val transactionDataHandler = new TransactionDummyDataHandler {
+  val transactionDataHandler = new TransactionDummyDataHandler {}
-
-    val map: Map[Address, TransactionId] = Map(firstAddress -> firstTxId, secondAddress -> secondTxId)
-
-    override def getLatestTransactionBy(addresses: Every[Address]): ApplicationResult[Map[String, String]] = {
-      val result = map
-        .filterKeys(addresses contains _)
-        .map( x => x._1.string -> x._2.string )
-
-      Good(result)
-    }
-  }
 
   override val application = guiceApplicationBuilder
     .overrides(bind[XSNService].to(customXSNService))
@@ -224,39 +213,4 @@ class TransactionsControllerSpec extends MyAPISpec {
       json mustEqual expected
     }
   }
-
-  "POST /transactions/latest" should {
-    def url = s"/transactions/latest"
-
-    "return the latest transactions for the addresses" in {
-
-      val addresses = List(firstAddress.string, secondAddress.string, s"3rd${secondAddress.string}")
-        .map(x => s""" "$x" """)
-        .mkString("[", ",", "]")
-      val body = s"""{ "addresses": $addresses }"""
-      val expected = Json.obj(firstAddress.string -> firstTxId, secondAddress.string -> secondTxId)
-
-      val response = POST(url, Some(body))
-      status(response) mustEqual OK
-      val json = contentAsJson(response)
-      json mustEqual expected
-    }
-
-    "fail while passing no addresses" in {
-      val body = """{ "addresses": [] }"""
-      val response = POST(url, Some(body))
-
-      status(response) mustEqual BAD_REQUEST
-
-      val json = contentAsJson(response)
-      val errorList = (json \ "errors").as[List[JsValue]]
-
-      errorList.size mustEqual 1
-      val error = errorList.head
-
-      (error \ "type").as[String] mustEqual PublicErrorRenderer.FieldValidationErrorType
-      (error \ "field").as[String] mustEqual "addresses"
-      (error \ "message").as[String].nonEmpty mustEqual true
-    }
-  }
 }