Processing new bid MQTT messages

app/actors/auctions/AuctionPublisher.scala

@@ -22,7 +22,7 @@ object AuctionPublisher extends ActorModule with Logging {
   sealed trait Command
   private case object Ready extends Command
   case class Publish(auction: Auction, author: User) extends Command
-  private case class AuctionConfirmed(id: Int, responseTopic: String) extends Command
+  private case class AuctionConfirmed(id: Long, responseTopic: String) extends Command
 
   private final val topic = "auctions/created"
 

app/controllers/AuctionsController.scala

@@ -3,23 +3,43 @@ package controllers
 import actors.auctions.AuctionPublisher
 import controllers.authentication.AuthenticatedAction
 import dao.{AuctionsDAO, AuthTokensDAO}
-import models.Auction
 import org.apache.pekko.actor.typed.ActorRef
-import play.api.libs.functional.syntax.toFunctionalBuilderOps
-import play.api.libs.json.{JsError, JsPath, JsValue, Json, Reads, Writes}
+import play.api.libs.json.*
 import play.api.mvc.{BaseController, ControllerComponents}
 
-import java.security.SecureRandom
 import javax.inject.{Inject, Singleton}
 import scala.concurrent.{ExecutionContext, Future}
+import models.Auction
+import caching.{CheckFresh, DigestEtagable, Etagable}
+
+import java.io.DataOutputStream
 
 @Singleton
 class AuctionsController @Inject()(val controllerComponents: ControllerComponents,
                                    val auctionsDAO: AuctionsDAO,
                                    val authTokensDAO: AuthTokensDAO,
-                                   val auctionPublisher: ActorRef[AuctionPublisher.Command],
-                                   implicit val ec: ExecutionContext) extends BaseController {
-  def create = Action.andThen(AuthenticatedAction(authTokensDAO)).async(parse.json) { implicit request =>
+                                   authenticatedAction: AuthenticatedAction,
+                                   val auctionPublisher: ActorRef[AuctionPublisher.Command])
+                                  (implicit val ec: ExecutionContext)
+  extends BaseController with CheckFresh {
+  def index = authenticatedAction.async { request =>
+    for {
+      auctions <- auctionsDAO.list_available(request.user)
+      json = Json.toJson(auctions)
+    } yield Ok(json)
+  }
+
+  def show(id: Long) = authenticatedAction.async { implicit request =>
+    auctionsDAO.showAvailable(request.user, id).map { auctionOpt =>
+      auctionOpt.fold(NotFound) { auction =>
+        checkFresh(auction) {
+          Ok(Json.toJson(auction)).withHeaders("etag" -> auction.etag)
+        }
+      }
+    }
+  }
+
+  def create = authenticatedAction.async(parse.json) { implicit request =>
     val auctionCreateDataResult = request.body.validate[AuctionCreateData]
     auctionCreateDataResult.fold(
       errors => Future.successful(BadRequest(JsError.toJson(errors))),
@@ -27,15 +47,27 @@ class AuctionsController @Inject()(val controllerComponents: ControllerComponent
         for {
           auction <- auctionsDAO.create(auctionCreateData.name, auctionCreateData.startingPrice, request.user)
           json = Json.toJson(auction)
-          response = Created(json)
           _ = auctionPublisher ! AuctionPublisher.Publish(auction, request.user)
-        } yield response
+        } yield Created(json)
       }
     )
   }
 
   private case class AuctionCreateData(name: String, startingPrice: BigDecimal)
-  private implicit val auctionCreateDataReads: Reads[AuctionCreateData] = (
-    (JsPath \ "name").read[String] and (JsPath \ "starting_price").read[BigDecimal]
-  )(AuctionCreateData.apply)
+
+  private given Reads[AuctionCreateData] = Json.reads[AuctionCreateData]
+
+  private given DigestEtagable[Auction] with {
+    override protected def writeDigestData(a: Auction, s: DataOutputStream): Unit = {
+      s.writeLong(a.id.getOrElse(0))
+      s.writeLong(a.authorId)
+      s.writeUTF(a.gid)
+      s.writeUTF(a.name)
+      s.writeLong(a.createdAt.getEpochSecond)
+
+      s.writeLong(a.currentBidderId.getOrElse(0))
+      a.currentBid.foreach(b => s.writeLong((b * 1000).toLong))
+      a.currentBidAt.foreach(ba => s.writeLong(ba.getEpochSecond))
+    }
+  }
 }

app/controllers/HomeController.scala

@@ -1,15 +1,24 @@
 package controllers
 
-import javax.inject._
-import play.api._
-import play.api.mvc._
+import play.api.*
+import _root_.controllers.authentication.{AuthenticatedAction, AuthenticatedRequest}
+import _root_.controllers.caching.{CheckFresh, DigestEtagable}
+import models.User
+import play.api.libs.json.Json
+import play.api.mvc.*
+
+import java.io.DataOutputStream
+import java.nio.charset.StandardCharsets.UTF_8
+import javax.inject.*
 
 /**
  * This controller creates an `Action` to handle HTTP requests to the
  * application's home page.
  */
 @Singleton
-class HomeController @Inject()(val controllerComponents: ControllerComponents) extends BaseController {
+class HomeController @Inject()(val controllerComponents: ControllerComponents,
+                               authenticatedAction: AuthenticatedAction)
+  extends BaseController with Logging with CheckFresh {
 
   /**
    * Create an Action to render an HTML page.
@@ -21,4 +30,20 @@ class HomeController @Inject()(val controllerComponents: ControllerComponents) e
   def index() = Action { implicit request: Request[AnyContent] =>
     Ok(views.html.index())
   }
+
+  def userData = authenticatedAction { implicit request: AuthenticatedRequest[AnyContent] =>
+    val user = request.user
+    checkFresh(user) {
+      // TODO: put the max-age somewhere into config
+      Ok(Json.toJson(user)).withHeaders("Cache-Control" -> "private, max-age=15, must-revalidate")
+    }
+  }
+
+  private given DigestEtagable[models.User] with {
+    override protected def writeDigestData(a: User, s: DataOutputStream): Unit = {
+      s.writeLong(a.id.getOrElse(0))
+      s.write(a.gid.getBytes(UTF_8))
+      s.write(a.username.getBytes(UTF_8))
+    }
+  }
 }

app/controllers/authentication/AuthenticatedAction.scala

@@ -5,13 +5,15 @@ import jakarta.inject.Inject
 import models.{AuthToken, User}
 import play.api.libs.json.*
 import play.api.mvc.Results.Unauthorized
-import play.api.mvc.{ActionRefiner, Request, Result, WrappedRequest}
+import play.api.mvc.{ActionBuilder, ActionRefiner, AnyContent, BodyParsers, Request, Result, WrappedRequest}
 
 import scala.concurrent.{ExecutionContext, Future}
 
 class AuthenticatedRequest[A](val token: AuthToken, val user: User, request: Request[A]) extends WrappedRequest[A](request)
 
-class AuthenticatedAction @Inject()(authTokensDao: AuthTokensDAO)(implicit val executionContext: ExecutionContext) extends ActionRefiner[Request, AuthenticatedRequest] {
+class AuthenticatedAction @Inject()(val parser: BodyParsers.Default, authTokensDao: AuthTokensDAO)(implicit val executionContext: ExecutionContext)
+  extends ActionRefiner[Request, AuthenticatedRequest]
+  with ActionBuilder[AuthenticatedRequest, AnyContent]{
   override protected def refine[A](request: Request[A]): Future[Either[Result, AuthenticatedRequest[A]]] = {
     val authHeader = request.headers.get("Authorization")
       .map(_.split(" ", 2)(1))
@@ -35,5 +37,4 @@ class AuthenticatedAction @Inject()(authTokensDao: AuthTokensDAO)(implicit val e
       case None => unauthenticatedRequestError
     }
   }
-
 }

app/controllers/authentication/SessionsController.scala

@@ -9,39 +9,45 @@ import play.api.mvc.{AbstractController, ControllerComponents}
 
 import scala.concurrent.{ExecutionContext, Future}
 
-case class LoginData(username: String, password: String)
-implicit val loginDataReads: Reads[LoginData] = (
-  (JsPath \ "username").read[String] and
-    (JsPath \ "password").read[String]
-)(LoginData.apply)
-implicit val tokenWrites: Writes[AuthToken] = (token: AuthToken) => Json.obj(
-  "token" -> token.token,
-  "createdAt" -> token.createdAt,
-  "expiresAt" -> token.expiresAt
-)
+object SessionsController {
+  case class LoginData(username: String, password: String)
+  given Reads[LoginData] = Json.reads[LoginData]
+}
 
 
 @Singleton
-class SessionsController @Inject()(controllerComponents: ControllerComponents, usersDAO: UsersDAO, authTokensDAO: AuthTokensDAO, implicit val ec: ExecutionContext) extends AbstractController(controllerComponents) {
+class SessionsController @Inject()(
+                                    controllerComponents: ControllerComponents,
+                                    usersDAO: UsersDAO,
+                                    authTokensDAO: AuthTokensDAO,
+                                    authenticatedAction: AuthenticatedAction)
+                                  (implicit val ec: ExecutionContext)
+  extends AbstractController(controllerComponents) {
+  import SessionsController.{LoginData, given}
+
   def login() = Action.async(parse.json) { implicit request =>
     val loginDataResult = request.body.validate[LoginData]
     loginDataResult.fold(
-      errors => {
-        Future.successful(BadRequest(Json.obj("message" -> JsError.toJson(errors))))
-      },
+      errors => Future.successful(BadRequest(JsError.toJson(errors))),
       loginData => {
         usersDAO.authenticate(loginData.username, loginData.password).flatMap { userOption =>
           userOption.fold(
             Future.successful(UnprocessableEntity(Json.obj("message" -> "Invalid authentication")))
           ){ user =>
-            authTokensDAO.createToken(user).map(token => Ok(Json.toJson(token)))
+            authTokensDAO.createToken(user).map { token =>
+              val json = Json.toJsObject(token) ++ Json.obj(
+                "userId" -> user.id.get,
+                "userGid" -> user.gid
+              )
+              Ok(json)
+            }
           }
         }
       }
     )
   }
 
-  def logout = Action.andThen(new AuthenticatedAction(authTokensDAO)).async { request =>
+  def logout = authenticatedAction.async { request =>
     authTokensDAO.destroy(request.token).map{ _ => Ok("") }
   }
 }

app/controllers/caching/caching.scala

@@ -0,0 +1,57 @@
+package controllers.caching
+
+import play.api.mvc.Results.NotModified
+import play.api.mvc.{Request, Result}
+
+import java.io.{ByteArrayOutputStream, DataOutputStream, OutputStream}
+import java.security.{DigestOutputStream, MessageDigest}
+import java.util.Base64
+import scala.concurrent.{ExecutionContext, Future}
+import scala.util.Using
+
+trait Etagable[A]:
+  extension (a: A) def etag: String
+
+
+trait DigestEtagable[A] extends Etagable[A]:
+  private val base64 = Base64.getUrlEncoder.withoutPadding
+
+  protected def writeDigestData(a: A, s: DataOutputStream): Unit
+
+  extension (a: A) {
+    override def etag: String = {
+      val md = MessageDigest.getInstance("SHA-1")
+      Using(DataOutputStream(DigestOutputStream(OutputStream.nullOutputStream(), md))) { dos =>
+        writeDigestData(a, dos)
+        dos.flush()
+      }
+
+      base64.encodeToString(md.digest())
+    }
+  }
+
+
+trait CheckFresh {
+  protected def checkFreshAsync[A, E: Etagable](entity: E)(onStale: => Future[Result])(using request: Request[A], ec: ExecutionContext): Future[Result] = {
+    compareEtag(request, entity).fold(
+      entityEtag => onStale.map(_.withHeaders("etag" -> entityEtag)),
+      requestEtag => Future.successful(notModified(requestEtag))
+    )
+  }
+
+  protected def checkFresh[A, E: Etagable](entity: E)(onStale: => Result)(using request: Request[A]): Result = {
+    compareEtag(request, entity).fold(
+      entityEtag => onStale.withHeaders("etag" -> entityEtag),
+      requestEtag => notModified(requestEtag)
+    )
+  }
+
+  private def compareEtag[A, E: Etagable](request: Request[A], entity: E) = {
+    val entityEtag = entity.etag
+    request.headers.get("If-None-Match").filter(e => e == entityEtag) match {
+      case Some(etag) => Right(etag)
+      case None => Left(entityEtag)
+    }
+  }
+  private def notModified(etag: String) = NotModified.withHeaders("etag" -> etag)
+}

app/controllers/devel/DevActionsController.scala

@@ -0,0 +1,32 @@
+package controllers.devel
+
+import dao.UsersDAO
+import play.api.libs.functional.syntax.toFunctionalBuilderOps
+import play.api.libs.json.{JsError, JsPath, Json, Reads}
+import play.api.mvc.*
+
+import javax.inject.Inject
+import scala.concurrent.{ExecutionContext, Future}
+
+class DevActionsController @Inject()(val controllerComponents: ControllerComponents,
+                                     val usersDAO: UsersDAO)
+                                    (implicit val ec: ExecutionContext)
+  extends BaseController {
+
+  private case class UserData(username: String, password: String)
+  private implicit val userDataReads: Reads[UserData] = (
+    (JsPath \ "username").read[String] and (JsPath \ "password").read[String]
+  )(UserData.apply)
+
+  def createUser = Action.async(parse.json) { implicit request =>
+    request.body.validate[UserData].fold(
+      errors => Future.successful(BadRequest(JsError.toJson(errors))),
+      userData => usersDAO.create(userData.username, userData.password)
+        .map {
+          case Left(UsersDAO.UsernameTaken) => BadRequest(Json.obj("error" -> "Username exists"))
+          case Left(_ex) => BadRequest(Json.obj("error" -> "User creation error"))
+          case Right(user) => Ok(Json.toJson(user))
+        }
+    )
+  }
+}

app/controllers/devel/DevRouter.scala

@@ -0,0 +1,24 @@
+package controllers.devel
+
+import play.api.Environment
+import play.api.Mode.Dev
+import play.api.mvc.*
+import play.api.routing.Router.Routes
+import play.api.routing.SimpleRouter
+import play.api.routing.sird.{POST, UrlContext}
+
+import javax.inject.Inject
+
+class DevRouter @Inject()(environment: Environment, controller: DevActionsController) extends SimpleRouter {
+  override def routes: Routes = {
+    if (environment.mode == Dev) {
+      devRoutes
+    } else {
+      PartialFunction.empty
+    }
+  }
+
+  private val devRoutes: PartialFunction[RequestHeader, Handler] = {
+    case POST(p"/users") => controller.createUser()
+  }
+}

app/controllers/filters/LoggingFilter.scala

@@ -17,7 +17,7 @@ class LoggingFilter @Inject()(implicit val mat: Materializer, ec: ExecutionConte
       val endTime = System.currentTimeMillis()
       val requestTime = endTime - startTime
 
-      logger.info(s"${requestHeader.method} ${requestHeader.uri} ${result.header.status} $requestTime")
+      logger.info(s"${requestHeader.method} ${requestHeader.uri} ${result.header.status} ${requestTime}ms")
 
       result
     }

app/dao/AuctionsDAO.scala

@@ -1,21 +1,35 @@
 package dao
 
-import models.{Auction, AuctionStatus}
-import schemas.Auctions
-import schemas.auctionStatusColumnType
 import play.api.db.slick.{DatabaseConfigProvider, HasDatabaseConfigProvider}
 import slick.jdbc.PostgresProfile
 import slick.jdbc.PostgresProfile.api.*
-
 import java.time.Instant
 import javax.inject.Inject
 import scala.concurrent.{ExecutionContext, Future}
 import scala.util.Random
 
+import models.{Auction, AuctionStatus, User}
+import schemas.Auctions
+import schemas.given
+
 class AuctionsDAO @Inject()(protected val dbConfigProvider: DatabaseConfigProvider)(implicit val ec: ExecutionContext)
   extends HasDatabaseConfigProvider[PostgresProfile] {
 
-  def create(name: String, startingPrice: BigDecimal, author: models.User): Future[Auction] = {
+  def list_available(user: User): Future[Seq[Auction]] = {
+    db.run(availableScope(user).result)
+  }
+
+  def showAvailable(user: User, id: Long): Future[Option[Auction]] = {
+    db.run {
+      availableScope(user).filter(_.id === id).take(1).result.headOption
+    }
+  }
+
+  def list_created_by(user: User): Future[Seq[Auction]] = {
+    db.run(Auctions.filter(_.authorId === user.id).result)
+  }
+
+  def create(name: String, startingPrice: BigDecimal, author: User): Future[Auction] = {
     val auction = Auction(
       id = None, name = name,
       gid = Random.alphanumeric.take(24).mkString,
@@ -33,8 +47,25 @@ class AuctionsDAO @Inject()(protected val dbConfigProvider: DatabaseConfigProvid
     db.run((Auctions returning Auctions) += auction)
   }
 
-  def changeStatus(auctionId: Int, status: AuctionStatus): Future[Boolean] = {
+  def changeStatus(auctionId: Long, status: AuctionStatus): Future[Boolean] = {
     db.run(Auctions.filter(_.id === auctionId).map(_.status).update(status))
       .map(_ == 1)
   }
+
+  def find_by_gid(gid: String): Future[Option[Auction]] = {
+    db.run(Auctions.filter(_.gid === gid).take(1).result.headOption)
+  }
+
+  def newBid(auction: Auction, bidder: User, bid: BigDecimal, timestamp: Instant): Future[Option[Auction]] = {
+    db.run {
+      Auctions.filter(_.id === auction.id.get).map{ it => (it.currentBid, it.currentBidAt, it.currentBidderId) }
+        .update((Some(bid), Some(timestamp), Some(bidder.id.get)))
+        .andThen { Auctions.filter(_.id === auction.id.get).result.headOption }
+        .transactionally
+    }
+  }
+
+  private def availableScope(user: User) = {
+    Auctions.filter(row => (row.status === AuctionStatus.Ready) && (row.authorId =!= user.id.get))
+  }
 }

app/dao/UsersDAO.scala

@@ -1,5 +1,6 @@
 package dao
 
+import dao.UsersDAO.{UnexpectedError, UsernameTaken}
 import de.mkammerer.argon2.Argon2Factory
 import execution.CryptoExecutionContext
 import jakarta.inject.Inject
@@ -9,23 +10,74 @@ import slick.jdbc.PostgresProfile.api.*
 
 import scala.concurrent.{ExecutionContext, Future}
 import models.User
+import org.postgresql.util.{PSQLException, PSQLState}
 import schemas.Users
 
-class UsersDAO @Inject()(protected val dbConfigProvider: DatabaseConfigProvider, private val cryptoEC: CryptoExecutionContext)(implicit val ec: ExecutionContext)
+import java.nio.charset.StandardCharsets.UTF_8
+import scala.util.Random
+
+class UsersDAO @Inject()(protected val dbConfigProvider: DatabaseConfigProvider, private val cryptoEC: CryptoExecutionContext)
+                        (using ec: ExecutionContext)
   extends HasDatabaseConfigProvider[PostgresProfile] {
   private val argon2 = Argon2Factory.create()
 
+  private object ArgonParameters {
+    val iterations = 3
+    val parallelism = 1
+    val memory = 65536
+  }
+
+  private final val dummyDigest = "$argon2i$v=19$m=65536,t=3,p=1$EB9QibLwzqkO7ne2bJoU/Q$ADkdyweXKylJORvWXbBVekURYaazkW/OplTq2wdN1So"
+
   def authenticate(username: String, password: String): Future[Option[User]] = {
     val query = Users.filter(_.username === username).take(1).result.headOption
-
     val userFuture = db.run(query)
 
     userFuture.map { userOption =>
       for {
         user <- userOption
         digest <- user.passwordDigest
-        if argon2.verify(digest, password.getBytes("UTF-8"))
-      } yield user
-    }(using cryptoEC)
+      } yield (user, digest)
+    }.map {
+        case Some((user, digest)) => (Some(user), digest)
+        case None => (None, dummyDigest)
+    }.flatMap { (userOpt, digest) =>
+      for {
+        validHash <- Future(argon2.verify(digest, password.getBytes(UTF_8)))(using cryptoEC)
+        opt = userOpt.flatMap(u => if validHash then Some(u) else None)
+      } yield opt
     }
+  }
+
+  def create(username: String, password: String): Future[Either[UsersDAO.RegistrationError, User]] = {
+    Future(argonHash(password))(using cryptoEC)
+      .flatMap{ passwordDigest =>
+        val gid = Random.alphanumeric.take(12).mkString
+        val user = User(
+          id = None,
+          gid = gid,
+          username = username,
+          passwordDigest = Some(passwordDigest)
+        )
+
+        db.run((Users returning Users) += user).map(Right(_))
+      }.recover {
+        case ex: PSQLException if ex.getSQLState == PSQLState.UNIQUE_VIOLATION.getState =>
+          Left(UsernameTaken)
+        case ex: Throwable =>
+          Left(UnexpectedError(ex))
+      }
+  }
+
+  def find_by_gid(gid: String): Future[Option[User]] = {
+    db.run(Users.filter(_.gid === gid).take(1).result.headOption)
+  }
+
+  private def argonHash(data: String) = argon2.hash(ArgonParameters.iterations, ArgonParameters.memory, ArgonParameters.parallelism, data.getBytes(UTF_8))
+}
+
+object UsersDAO {
+  sealed trait RegistrationError
+  case object UsernameTaken extends RegistrationError
+  case class UnexpectedError(cause: Throwable) extends RegistrationError
 }

app/models/models.scala

@@ -1,12 +1,26 @@
 package models
 
-import play.api.libs.json.{JsValue, Json, Writes}
+import play.api.libs.json.{JsString, JsValue, Json, OWrites, Writes}
 
 import java.time.Instant
 
-case class User(id: Option[Int], username: String, gid: String, passwordDigest: Option[String])
+case class User(id: Option[Long], username: String, gid: String, passwordDigest: Option[String])
+object User {
+  given writes: Writes[User] = (o: User) => Json.obj(
+    "gid" -> o.gid,
+    "username" -> o.username
+  )
+}
 
-case class AuthToken(id: Option[Int], userId: Int, token: String, createdAt: Instant, expiresAt: Instant)
+case class AuthToken(id: Option[Long], userId: Long, token: String, createdAt: Instant, expiresAt: Instant)
+object AuthToken {
+  given writes: OWrites[AuthToken] = (a: AuthToken) => Json.obj(
+    "token" -> a.token,
+    "userId" -> a.userId,
+    "createdAt" -> a.createdAt,
+    "expiresAt" -> a.expiresAt
+  )
+}
 
 enum AuctionStatus(val value: Short) {
   case Created extends AuctionStatus(0)
@@ -16,21 +30,15 @@ enum AuctionStatus(val value: Short) {
 
 object AuctionStatus {
   lazy val byValue: Map[Short, AuctionStatus] = Map.from(AuctionStatus.values.map{it => (it.value, it)})
+
+  implicit val writes: Writes[AuctionStatus] = (o: AuctionStatus) => JsString(o.toString)
 }
 
-case class Auction(id: Option[Int], name: String, status: AuctionStatus, gid: String, authorId: Int,
+case class Auction(id: Option[Long], name: String, status: AuctionStatus, gid: String, authorId: Long,
                    startingPrice: BigDecimal, currentBid: Option[BigDecimal],
-                   currentBidderId: Option[Int], currentBidAt: Option[Instant],
+                   currentBidderId: Option[Long], currentBidAt: Option[Instant],
                    createdAt: Instant)
 
 object Auction {
-  implicit val writes: Writes[Auction] = (a: Auction) => Json.obj(
-    "id" -> a.id,
-    "name" -> a.name,
-    "gid" -> a.gid,
-    "starting_price" -> a.startingPrice,
-    "current_bid" -> a.currentBid,
-    "current_bidder_id" -> a.currentBidderId,
-    "current_bid_at" -> a.currentBidAt
-  )
+  implicit val writes: OWrites[Auction] = Json.writes[Auction]
 }

app/mqttClient/MessageProcessorActor.scala

@@ -8,8 +8,10 @@ import org.apache.pekko.actor.typed.{ActorRef, Behavior}
 import org.apache.pekko.actor.typed.scaladsl.Behaviors
 import play.api.Logging
 import play.api.libs.concurrent.ActorModule
+import play.api.libs.json._
 
 import java.nio.charset.StandardCharsets
+import scala.util.matching.Regex
 
 object MessageProcessorActor extends ActorModule with Logging {
   sealed trait Command
@@ -18,14 +20,16 @@ object MessageProcessorActor extends ActorModule with Logging {
 
   override type Message = Command
 
+  private final val newBidPattern: Regex = """notify/new_bid/(\w+)""".r
+
   @Singleton
   class Reg @Inject()(private val mqttMessageProcessorActor: ActorRef[Command])
 
   @Provides
-  def create(client: Mqtt5AsyncClient): Behavior[Command] = Behaviors.setup { context =>
+  def create(client: Mqtt5AsyncClient, newBidService: services.auctions.NewBid): Behavior[Command] = Behaviors.setup { context =>
     client.connect().whenComplete { (_action, _throwable) =>
       client.subscribeWith()
-        .topicFilter("test/+")
+        .topicFilter("notify/new_bid/+")
         .callback{ (publish) =>
           context.self ! MqttMessageReceived(publish)
         }
@@ -37,6 +41,17 @@ object MessageProcessorActor extends ActorModule with Logging {
         val topic = publish.getTopic
         val payload = String(publish.getPayloadAsBytes, StandardCharsets.UTF_8)
         logger.info(s"Received message $topic $payload")
+
+        topic.toString match {
+          case newBidPattern(auctionGid) =>
+            Json.parse(payload).validate[services.auctions.NewBid.Request] match {
+              case JsSuccess(request, _) => newBidService.perform(auctionGid, request)
+              case JsError(errors) =>
+                logger.warn(errors.toString())
+            }
+            println(s"New bid $auctionGid")
+        }
+
         Behaviors.same
       case Stop => Behaviors.stopped{ () =>
         client.disconnect()

app/schemas/schemas.scala

@@ -8,7 +8,7 @@ import slick.model.ForeignKeyAction.{Cascade, Restrict}
 import java.time.Instant
 
 class UsersTable(tag: Tag) extends Table[User](tag, "users") {
-  def id = column[Int]("id", O.PrimaryKey, O.AutoInc)
+  def id = column[Long]("id", O.PrimaryKey, O.AutoInc)
   def gid = column[String]("gid", O.Unique)
   def username = column[String]("username", O.Unique)
   def passwordDigest = column[Option[String]]("password_digest")
@@ -20,8 +20,8 @@ lazy val Users = TableQuery[UsersTable]
 
 class AuthTokensTable(tag: Tag) extends Table[AuthToken](tag, "auth_tokens") {
 
-  def id = column[Int]("id", O.PrimaryKey, O.AutoInc)
-  def userId = column[Int]("user_id")
+  def id = column[Long]("id", O.PrimaryKey, O.AutoInc)
+  def userId = column[Long]("user_id")
   def token = column[String]("token")
   def createdAt = column[Instant]("created_at")
   def expiresAt = column[Instant]("expires_at")
@@ -40,14 +40,14 @@ implicit val auctionStatusColumnType: BaseColumnType[AuctionStatus] =
   )
 
 class AuctionsTable(tag: Tag) extends Table[Auction](tag, "auctions") {
-  def id = column[Int]("id", O.PrimaryKey, O.AutoInc)
+  def id = column[Long]("id", O.PrimaryKey, O.AutoInc)
   def name = column[String]("name")
   def status = column[AuctionStatus]("status")
   def gid = column[String]("gid", O.Unique)
-  def authorId = column[Int]("author_id")
-  def startingPrice = column[BigDecimal]("starting_price")
-  def currentBid = column[Option[BigDecimal]]("current_bid")
-  def currentBidderId = column[Option[Int]]("current_bidder_id")
+  def authorId = column[Long]("author_id")
+  def startingPrice = column[BigDecimal]("starting_price", O.SqlType("DECIMAL(20, 3)"))
+  def currentBid = column[Option[BigDecimal]]("current_bid", O.SqlType("DECIMAL(20, 3)"))
+  def currentBidderId = column[Option[Long]]("current_bidder_id")
   def currentBidAt = column[Option[Instant]]("current_bid_at")
   def createdAt = column[Instant]("created_at")
 

app/services/auctions/NewBid.scala

@@ -0,0 +1,39 @@
+package services.auctions
+
+import dao.{AuctionsDAO, UsersDAO}
+import models.Auction
+import play.api.libs.functional.syntax.toFunctionalBuilderOps
+import play.api.libs.json.{JsPath, JsResult, Reads}
+
+import java.time.Instant
+import javax.inject.Inject
+import scala.concurrent.{ExecutionContext, Future}
+
+object NewBid {
+  case class Request(bid: BigDecimal, bidderGid: String, timestamp: Instant)
+
+  given Reads[Request] = (
+    (JsPath \ "bid").read[BigDecimal] and
+      (JsPath \ "bidder_gid").read[String] and
+      (JsPath \ "timestamp").read[Instant]
+    )(Request.apply)
+}
+
+class NewBid @Inject()(auctionsDao: AuctionsDAO, usersDAO: UsersDAO)(using ec: ExecutionContext) {
+  import NewBid.Request
+
+  def perform(auctionGid: String, request: Request): Future[Option[Auction]] = {
+    val dataFuture = for {
+      auction <- auctionsDao.find_by_gid(auctionGid)
+      bidder <- usersDAO.find_by_gid(request.bidderGid)
+    } yield (auction, bidder)
+
+    dataFuture.flatMap {
+      case (Some(auction), Some(bidder)) =>
+        auctionsDao.newBid(auction, bidder, bid = request.bid, timestamp = request.timestamp)
+      case (_, _) =>
+        // One of them (or both) aren't found
+        Future.successful(None)
+    }
+  }
+}

compose.yaml

@@ -1,4 +1,6 @@
 name: 'neon-vertigo-api'
+include:
+  - ../shared/compose.shared.yml
 services:
   db:
     image: "postgres:18"
@@ -6,3 +8,8 @@ services:
       - db.env
     ports:
       - "5432:5432"
+    volumes:
+      - "db:/var/lib/postgresql"
+
+volumes:
+  db:

conf/application.conf

@@ -2,9 +2,14 @@
 
 play.http.filters=controllers.filters.Filters
 
+play.filters.enabled += "play.filters.cors.CORSFilter"
 play.filters.csrf.header.bypassHeaders {
     X-Requested-With = "*"
 }
+play.filters.cors {
+    allowedOrigins = ["http://localhost:4321"]
+    exposedHeaders = ["ETag"]
+}
 
 play.modules.enabled += "mqttClient.Module"
 

conf/routes

@@ -9,7 +9,13 @@ GET     /                           controllers.HomeController.index()
 POST    /login                      controllers.authentication.SessionsController.login()
 DELETE  /logout                     controllers.authentication.SessionsController.logout()
 
+GET /user_data                      controllers.HomeController.userData()
+
 # Map static resources from the /public folder to the /assets URL path
 GET     /assets/*file               controllers.Assets.versioned(path="/public", file: Asset)
 
+GET     /auctions                   controllers.AuctionsController.index()
+GET     /auctions/:id               controllers.AuctionsController.show(id: Long)
 POST    /auctions                   controllers.AuctionsController.create()
+
+-> /-devel                          controllers.devel.DevRouter