Add total_records for federations api

modules/api/src/main/smithy/federations.smithy

@@ -28,6 +28,8 @@ operation GetFederationsSummary {
   output:= {
     @required
     items: FederationsSummary
+    @required
+    totalResults: Long
     nextPage: PageNumber
   }
 
@@ -69,6 +71,8 @@ operation GetFederationPlayersById {
   output := {
     @required
     items: Players
+    @required
+    totalResults: Long
     nextPage: PageNumber
   }
 

modules/backend/src/main/scala/service.federation.scala

@@ -66,16 +66,12 @@ class FederationServiceImpl(db: Db)(using Logger[IO]) extends FederationService[
       hasWomenTitle,
       hasOtherTitle
     )
-    db.allPlayers(sorting, paging, filter)
+    (db.allPlayers(sorting, paging, filter).map(_.map(_.transform)), db.countPlayers(filter))
+      .parMapN: (xs, total) =>
+        GetFederationPlayersByIdOutput(xs, total, Option.when(xs.size == pageSize)(page.succ))
       .handleErrorWith: e =>
         error"Error in getPlayers with $filter, $e" *>
           IO.raiseError(InternalServerError("Internal server error"))
-      .map(_.map(_.transform))
-      .map: xs =>
-        GetFederationPlayersByIdOutput(
-          xs,
-          Option.when(xs.size == pageSize)(page.succ)
-        )
 
   override def getFederationSummaryById(id: FederationId): IO[GetFederationSummaryByIdOutput] =
     db.federationSummaryById(id)
@@ -89,16 +85,14 @@ class FederationServiceImpl(db: Db)(using Logger[IO]) extends FederationService[
       page: PageNumber,
       pageSize: PageSize
   ): IO[GetFederationsSummaryOutput] =
-    db.allFederationsSummary(Pagination(page, pageSize))
-      .handleErrorWith: e =>
+    (
+      db.allFederationsSummary(Pagination(page, pageSize)).map(_.map(_.transform)),
+      db.countFederationsSummary
+    ).parMapN: (xs, total) =>
+      GetFederationsSummaryOutput(xs, total, Option.when(xs.size == pageSize)(page.succ))
+    .handleErrorWith: e =>
         error"Error in getFederationsSummary: $e" *>
           IO.raiseError(InternalServerError("Internal server error"))
-      .map(_.map(_.transform))
-      .map: xs =>
-        GetFederationsSummaryOutput(
-          xs,
-          Option.when(xs.size == pageSize)(page.succ)
-        )
 
 object FederationTransformers:
   extension (p: FederationSummary)

modules/db/src/main/scala/Db.scala

@@ -19,6 +19,8 @@ trait Db:
   def playersByIds(ids: Set[PlayerId]): IO[List[PlayerInfo]]
   def playersByFederationId(id: FederationId): IO[List[PlayerInfo]]
   def allFederationsSummary(paging: Pagination): IO[List[FederationSummary]]
+  def countFederationsSummary: IO[Long]
+  def countFederations: IO[Long]
   def federationSummaryById(id: FederationId): IO[Option[FederationSummary]]
 
 object Db:
@@ -74,6 +76,12 @@ object Db:
       val q = f.fragment.query(Codecs.federationSummary)
       postgres.use(_.execute(q)(f.argument))
 
+    def countFederationsSummary: IO[Long] =
+      postgres.use(_.unique(Sql.countFederationsSummary))
+
+    def countFederations: IO[Long] =
+      postgres.use(_.unique(Sql.countFederations))
+
     def federationSummaryById(id: FederationId): IO[Option[FederationSummary]] =
       postgres.use(_.option(Sql.federationSummaryById)(id))
 
@@ -192,6 +200,12 @@ private object Sql:
         """.apply(Void)
     select |+| filterFragment(filter).fold(void)(where |+| _)
 
+  val countFederations: Query[Void, Long] =
+    sql"SELECT count(*) FROM federations".query(codec.all.int8)
+
+  val countFederationsSummary: Query[Void, Long] =
+    sql"SELECT count(*) FROM federations".query(codec.all.int8)
+
   def playersByIds(n: Int): Fragment[List[Int]] =
     val ids = int4.values.list(n)
     sql"$allPlayersFragment WHERE p.id IN ($ids)"