Core/Commands: Add .debug guidlimits <optional map id> chat command

Add .debug guidlimits <optional map id> chat command to show the highest low guid counter for Creature and GameObject, useful when reaching Respawn.GuidWarnLevel

(cherry picked from commit 7421ccaf7eb134f549ad3734a815397216d020ed)

2 files changed, 41 insertions, 0 deletions

diff --git a/src/server/game/Maps/Map.h b/src/server/game/Maps/Map.h
index b678a82ff71..8e579b9c1c4 100644
--- a/src/server/game/Maps/Map.h
+++ b/src/server/game/Maps/Map.h
@@ -568,6 +568,13 @@ class TC_GAME_API Map : public GridRefManager<NGridType>
             return GetGuidSequenceGenerator<high>().Generate();
         }
 
+        template<HighGuid high>
+        inline ObjectGuid::LowType GetMaxLowGuid()
+        {
+            static_assert(ObjectGuidTraits<high>::SequenceSource.HasFlag(ObjectGuidSequenceSource::Map), "Only map specific guid can be retrieved in Map context");
+            return GetGuidSequenceGenerator<high>().GetNextAfterMaxUsed();
+        }
+
         void AddUpdateObject(Object* obj)
         {
             _updateObjects.insert(obj);
diff --git a/src/server/scripts/Commands/cs_debug.cpp b/src/server/scripts/Commands/cs_debug.cpp
index dd0d69e6f03..16819886ff0 100644
--- a/src/server/scripts/Commands/cs_debug.cpp
+++ b/src/server/scripts/Commands/cs_debug.cpp
@@ -122,6 +122,7 @@ public:
             { "wsexpression" , rbac::RBAC_PERM_COMMAND_DEBUG,               false, &HandleDebugWSExpressionCommand,     "" },
             { "dummy",         rbac::RBAC_PERM_COMMAND_DEBUG_DUMMY,         false, &HandleDebugDummyCommand,            "" },
             { "asan",          rbac::RBAC_PERM_COMMAND_DEBUG_ASAN,          true,  nullptr,                             "", debugAsanCommandTable },
+            { "guidlimits",    rbac::RBAC_PERM_COMMAND_DEBUG,               true,  &HandleDebugGuidLimitsCommand,       "" },
         };
         static std::vector<ChatCommand> commandTable =
         {
@@ -1723,6 +1724,39 @@ public:
         return true;
     }
 
+    static bool HandleDebugGuidLimitsCommand(ChatHandler* handler, CommandArgs* args)
+    {
+        auto mapId = args->TryConsume<uint32>();
+        if (mapId)
+        {
+            sMapMgr->DoForAllMapsWithMapId(mapId.get(),
+                [handler](Map* map) -> void
+                {
+                    HandleDebugGuidLimitsMap(handler, map);
+                }
+            );
+        }
+        else
+        {
+            sMapMgr->DoForAllMaps(
+                [handler](Map* map) -> void
+                {
+                    HandleDebugGuidLimitsMap(handler, map);
+                }
+            );
+        }
+
+        handler->PSendSysMessage("Guid Warn Level: %u", sWorld->getIntConfig(CONFIG_RESPAWN_GUIDWARNLEVEL));
+        handler->PSendSysMessage("Guid Alert Level: %u", sWorld->getIntConfig(CONFIG_RESPAWN_GUIDALERTLEVEL));
+        return true;
+    }
+
+    static void HandleDebugGuidLimitsMap(ChatHandler* handler, Map* map)
+    {
+        handler->PSendSysMessage("Map Id: %u Name: '%s' Instance Id: %u Highest Guid Creature: " UI64FMTD " GameObject: " UI64FMTD,
+            map->GetId(), map->GetMapName(), map->GetInstanceId(), uint64(map->GenerateLowGuid<HighGuid::Creature>()), uint64(map->GetMaxLowGuid<HighGuid::GameObject>()));
+    }
+
     static bool HandleDebugDummyCommand(ChatHandler* handler, CommandArgs* /*args*/)
     {
         handler->SendSysMessage("This command does nothing right now. Edit your local core (cs_debug.cpp) to make it do whatever you need for testing.");