/api/board/game/{id}/chat endpoint to fetch the game chat - for #9613

app/controllers/PlayApi.scala

@@ -66,7 +66,7 @@ final class PlayApi(
       }
     }
 
-  def boardCommand(cmd: String) =
+  def boardCommandPost(cmd: String) =
     ScopedBody(_.Board.Play) { implicit req => me =>
       impl.command(me, cmd)(WithPovAsBoard)
     }
@@ -119,6 +119,17 @@ final class PlayApi(
       }
   }
 
+  def boardCommandGet(cmd: String) =
+    ScopedBody(_.Board.Play) { implicit req => me =>
+      cmd.split('/') match {
+        case Array("game", id, "chat") =>
+          WithPovAsBoard(id, me) { pov =>
+            env.chat.api.userChat.find(lila.chat.Chat.Id(pov.game.id)) map
+              lila.chat.JsonView.boardApi map JsonOk
+          }
+      }
+    }
+
   // utils
 
   private def toResult(f: Funit): Fu[Result] = catchClientError(f inject jsonOkResult)

conf/routes

@@ -691,7 +691,8 @@ GET   /api/bot/online                  controllers.PlayApi.botOnlineApi
 GET   /api/board/game/stream/:id        controllers.PlayApi.boardGameStream(id: String)
 POST  /api/board/game/:id/move/:uci     controllers.PlayApi.boardMove(id: String, uci: String, offeringDraw: Option[Boolean] ?= None)
 POST  /api/board/seek                   controllers.Setup.boardApiHook
-POST  /api/board/*cmd                   controllers.PlayApi.boardCommand(cmd: String)
+POST  /api/board/*cmd                   controllers.PlayApi.boardCommandPost(cmd: String)
+GET   /api/board/*cmd                   controllers.PlayApi.boardCommandGet(cmd: String)
 
 # Account
 GET   /account/passwd                  controllers.Account.passwd

modules/chat/src/main/JsonView.scala

@@ -30,6 +30,13 @@ object JsonView {
       "writeable" -> writeable
     )
 
+  def boardApi(chat: UserChat) = JsArray {
+    chat.lines collect {
+      case UserLine(name, _, _, text, troll, del) if !troll && !del =>
+        Json.obj("text" -> text, "user" -> name)
+    }
+  }
+
   object writers {
 
     implicit val chatIdWrites: Writes[Chat.Id] = stringIsoWriter(Chat.chatIdIso)