add /api/study/by/:user endpoint

app/controllers/Study.scala

@@ -492,6 +492,17 @@ final class Study(
       .toFuccess
   }
 
+  def apiListByOwner(username: UserStr) = OpenOrScoped(_.Study.Read) { me =>
+    val isMe = me.exists(_ is username)
+    apiC
+      .jsonDownload:
+        env.study.studyRepo
+          .sourceByOwner(username.id, isMe)
+          .throttle(if isMe then 50 else 20, 1.second)
+          .map(lila.study.JsonView.metadata)
+      .toFuccess
+  }
+
   private def requestPgnFlags(req: RequestHeader) =
     lila.study.PgnDump.WithFlags(
       comments = getBoolOpt("comments", req) | true,

conf/routes

@@ -231,6 +231,7 @@ GET   /study/glyphs/:lang.json         controllers.Study.glyphs(lang)
 GET   /$lang<\w\w\w?>/study            controllers.Study.homeLang(lang)
 GET   /api/study/$id<\w{8}>.pgn        controllers.Study.apiPgn(id)
 GET   /api/study/$id<\w{8}>/$chapterId<\w{8}>.pgn controllers.Study.apiChapterPgn(id, chapterId)
+GET   /api/study/by/:user              controllers.Study.apiListByOwner(user)
 
 # Relay
 GET   /broadcast                              controllers.RelayTour.index(page: Int ?= 1, q ?= "")

modules/study/src/main/JsonView.scala

@@ -116,6 +116,13 @@ object JsonView:
     Json.obj("id" -> s._id, "name" -> s.name)
   }
 
+  def metadata(study: Study) = Json.obj(
+    "id"        -> study.id,
+    "name"      -> study.name,
+    "createdAt" -> study.createdAt,
+    "updatedAt" -> study.updatedAt
+  )
+
   def glyphs(lang: play.api.i18n.Lang): JsObject =
     import lila.tree.Node.given
     import lila.i18n.I18nKeys.{ study as trans }