better pool json

app/controllers/Lobby.scala

@@ -15,9 +15,7 @@ object Lobby extends LilaController {
   private val lobbyJson = Json.obj(
     "lobby" -> Json.obj(
       "version" -> 0,
-      "pool" -> Json.obj(
-        "list" -> lila.pool.PoolList.all.map(_.clock.show)
-      )
+      "pools" -> Env.api.lobbyApi.poolsJson
     )
   )
 

modules/api/src/main/LobbyApi.scala

@@ -16,16 +16,9 @@ final class LobbyApi(
     pools: List[lila.pool.PoolConfig]) {
 
   import makeTimeout.large
+  import lila.pool.JsonView._
 
-  private val poolsJson = JsArray {
-    pools.map { p =>
-      Json.obj(
-        "id" -> p.id.value,
-        "lim" -> p.clock.limitInMinutes,
-        "inc" -> p.clock.increment,
-        "perf" -> p.perfType.name)
-    }
-  }
+  val poolsJson = Json toJson pools
 
   def apply(implicit ctx: Context): Fu[JsObject] =
       ctx.me.fold(seekApi.forAnon)(seekApi.forUser) zip

modules/pool/src/main/JsonView.scala

@@ -0,0 +1,14 @@
+package lila.pool
+
+import play.api.libs.json._
+
+object JsonView {
+
+  implicit val poolConfigJsonWriter = OWrites[PoolConfig] { p =>
+    Json.obj(
+      "id" -> p.id.value,
+      "lim" -> p.clock.limitInMinutes,
+      "inc" -> p.clock.increment,
+      "perf" -> p.perfType.name)
+  }
+}