Add a 'final' filter to registration page; coherence check on server for final and skipping

api-webapp/src/main/kotlin/org/jeudego/pairgoth/api/PlayerHandler.kt

@@ -34,7 +34,18 @@ object PlayerHandler: PairgothApiHandler {
         val player = tournament.players[id] ?: badRequest("invalid player id")
         val payload = getObjectPayload(request)
         val updated = Player.fromJson(payload, player)
-        tournament.players[updated.id] = updated
+        // check coherence
+        if (player.final && !updated.final && tournament.pairedPlayers().contains(updated.id)) {
+            badRequest("player is playing")
+        }
+        val leavingRounds = updated.skip.toSet().minus(player.skip.toSet())
+        leavingRounds.forEach {  round ->
+            val playing = tournament.games(round).values.flatMap { listOf(it.black, it.white) }
+            if (playing.contains(id)) {
+                throw badRequest("player is playing in round #$round")
+            }
+        }
+        tournament.players[id] = updated
         tournament.dispatchEvent(PlayerUpdated, player.toJson())
         return Json.Object("success" to true)
     }
@@ -42,6 +53,11 @@ object PlayerHandler: PairgothApiHandler {
     override fun delete(request: HttpServletRequest, response: HttpServletResponse): Json {
         val tournament = getTournament(request)
         val id = getSubSelector(request)?.toIntOrNull() ?: badRequest("missing or invalid player selector")
+        // check coherence
+        val player = tournament.players[id] ?: badRequest("invalid player id")
+        if (player.final && tournament.pairedPlayers().contains(id)) {
+            badRequest("player is playing")
+        }
         tournament.players.remove(id) ?: badRequest("invalid player id")
         tournament.dispatchEvent(PlayerDeleted, Json.Object("id" to id))
         return Json.Object("success" to true)

api-webapp/src/main/kotlin/org/jeudego/pairgoth/model/Tournament.kt

@@ -114,6 +114,8 @@ sealed class Tournament <P: Pairable>(
         }
         return changed
     }
+
+    fun pairedPlayers() = games.flatMap { it.values }.flatMap { listOf(it.black, it.white) }.toSet()
 }
 
 // standard tournament of individuals