If user A views the mini profile of user B, disable the message button if user B's preferences prevent chatting.

Author: johndoknjas

app/controllers/User.scala

@@ -179,14 +179,16 @@ final class User(
               ctx.userId.so(relationApi.fetchBlocks(user.id, _)),
               ctx.userId.traverse(env.game.crosstableApi(user.id, _)),
               ctx.isAuth.so(env.pref.api.followable(user.id)),
-              ctx.useMe(env.clas.api.clas.realName(user.id))
-            ).flatMapN: (blocked, crosstable, followable, realName) =>
+              ctx.useMe(env.clas.api.clas.realName(user.id)),
+              ctx.me.so(me => env.msg.api.canMessage(user.id)(using me))
+            ).flatMapN: (blocked, crosstable, followable, realName, canMessage) =>
               negotiate(
                 html = for
                   pov <- ctx.isnt(user).so(env.round.currentlyPlaying.exec(user.user.id))
                   ping = env.socket.isOnline.exec(user.id).so(env.socket.getLagRating(user.id))
                   snip <- Ok.snip:
-                    views.user.mini(user, pov, blocked, followable, relation, ping, crosstable, realName)
+                    views.user
+                      .mini(user, pov, blocked, followable, relation, ping, crosstable, realName, canMessage)
                 yield snip.headerCacheSeconds(5),
                 json =
                   import lila.game.JsonView.given

app/views/user/ui.scala

@@ -19,7 +19,8 @@ def mini(
     relation: Option[lila.relation.Relation],
     ping: Option[Int],
     ct: Option[lila.game.Crosstable],
-    realName: Option[String]
+    realName: Option[String],
+    canMessage: Boolean
 )(using ctx: Context) =
   val rel = views.relation.mini(u.id, blocked, followable, relation)
   def crosstable(myId: UserId) = ct
@@ -38,7 +39,7 @@ def mini(
   val flag = u.profileOrDefault.flagInfo
   val perfs = u.perfs.best8Perfs
   val nameFrag = realName.map(frag(_))
-  show.ui.mini(u, playing, blocked, ping, rel, crosstable, flag, nameFrag, perfs, userMarks)
+  show.ui.mini(u, playing, blocked, ping, rel, crosstable, flag, nameFrag, perfs, userMarks, canMessage)
 
 val perfStat = lila.perfStat.PerfStatUi(helpers)(views.user.bits.communityMenu("ratings"))
 def perfStatPage(data: PerfStatData, ratingChart: Option[SafeJsonStr])(using Context) =

modules/msg/src/main/MsgApi.scala

@@ -96,7 +96,7 @@ final class MsgApi(
             _ <- setReadBy(threadId, me, userId)
             msgs <- threadMsgsFor(threadId, me, before)
             relations <- relationApi.fetchRelations(me, userId)
-            postable <- security.may.post(me, userId, isNew = msgs.headOption.isEmpty)
+            postable <- security.may.post(me, userId, msgs.headOption.isEmpty)
             details <- Granter(_.PublicMod).optionFu(fetchContactDetailsForMods(userId))
           yield MsgConvo(contact, msgs, relations, postable, details).some
         }
@@ -396,3 +396,12 @@ final class MsgApi(
           // filter conversation where only team messages where sent
           msgs <- doc.getAsOpt[NonEmptyList[Msg]]("msgs")
         yield (tid, msgs)).toList
+
+  def canMessage(dest: UserId)(using me: Me): Fu[Boolean] =
+    if dest.is(me) then fuFalse
+    else
+      for
+        hasMsgs <- threadMsgsFor(MsgThread.id(me, dest), me, none).map(_.nonEmpty)
+        canPost <- security.may.post(me, dest, !hasMsgs)
+      yield
+        canPost

modules/user/src/main/ui/UserShow.scala

@@ -20,7 +20,8 @@ final class UserShow(helpers: Helpers, bits: UserBits):
       flag: Option[Flag],
       realName: Option[Frag],
       best8Perfs: List[PerfKey],
-      userMarks: => Frag
+      userMarks: => Frag,
+      canMessage: Boolean
   )(using ctx: Context) =
     frag(
       div(cls := "upt__info")(
@@ -58,12 +59,22 @@ final class UserShow(helpers: Helpers, bits: UserBits):
               ),
               (!blocked).option(
                 frag(
-                  a(
-                    dataIcon := Icon.BubbleSpeech,
-                    cls := "btn-rack__btn",
-                    title := trans.site.chat.txt(),
-                    href := routes.Msg.convo(u.username)
-                  ),
+                  if canMessage then
+                    a(
+                      dataIcon := Icon.BubbleSpeech,
+                      cls := "btn-rack__btn",
+                      title := trans.site.chat.txt(),
+                      href := routes.Msg.convo(u.username)
+                    )
+                  else
+                    span(
+                      dataIcon := Icon.BubbleSpeech,
+                      cls := "btn-rack__btn",
+                      title := s"${u.username} doesn't accept new messages.",
+                      attr("disabled") := "disabled",
+                      aria.disabled := "true"
+                    )
+                  ,
                   a(
                     dataIcon := Icon.Swords,
                     cls := "btn-rack__btn",