Replaced Ints with Longs as database Ids.

app/models/models.scala

@@ -4,7 +4,7 @@ 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] = new Writes[User] {
     override def writes(o: User): JsValue = Json.obj(
@@ -14,7 +14,7 @@ object User {
   }
 }
 
-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,
@@ -36,7 +36,7 @@ object AuctionStatus {
   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],
                    createdAt: Instant)