feat(Core/Player): add helper for send large count mail items (#8460)

src/server/game/Entities/Player/Player.h

@@ -1580,6 +1580,8 @@ public:
     Mail* GetMail(uint32 id);
 
     PlayerMails const& GetMails() const { return m_mail; }
+    void SendItemRetrievalMail(uint32 itemEntry, uint32 count); // Item retrieval mails sent by The Postmaster (34337)
+    void SendItemRetrievalMail(std::vector<std::pair<uint32, uint32>> mailItems); // Item retrieval mails sent by The Postmaster (34337)
 
     /*********************************************************/
     /*** MAILED ITEMS SYSTEM ***/

src/server/game/Entities/Player/PlayerMisc.cpp

@@ -416,3 +416,83 @@ void Player::UpdateDuelFlag(time_t currTime)
 }
 
 /*********************************************************/
+
+void Player::SendItemRetrievalMail(uint32 itemEntry, uint32 count)
+{
+    SendItemRetrievalMail({ { itemEntry, count } });
+}
+
+void Player::SendItemRetrievalMail(std::vector<std::pair<uint32, uint32>> mailItems)
+{
+    if (mailItems.empty())
+    {
+        // Skip send if empty items
+        FMT_LOG_ERROR("entities.player.items", "> SendItemRetrievalMail: Attempt to send almost with items without items. Player {}", GetGUID().ToString());
+        return;
+    }
+
+    using SendMailTempateVector = std::vector<std::pair<uint32, uint32>>;
+
+    std::vector<SendMailTempateVector> allItems;
+
+    auto AddMailItem = [&allItems](uint32 itemEntry, uint32 itemCount)
+    {
+        SendMailTempateVector toSendItems;
+
+        ItemTemplate const* itemTemplate = sObjectMgr->GetItemTemplate(itemEntry);
+        if (!itemTemplate)
+        {
+            FMT_LOG_ERROR("entities.player.items", "> SendItemRetrievalMail: Item id {} is invalid", itemEntry);
+            return;
+        }
+
+        if (itemCount < 1 || (itemTemplate->MaxCount > 0 && itemCount > static_cast<uint32>(itemTemplate->MaxCount)))
+        {
+            FMT_LOG_ERROR("entities.player.items", "> SendItemRetrievalMail: Incorrect item count ({}) for item id {}", itemEntry, itemCount);
+            return;
+        }
+
+        while (itemCount > itemTemplate->GetMaxStackSize())
+        {
+            if (toSendItems.size() <= MAX_MAIL_ITEMS)
+            {
+                toSendItems.emplace_back(itemEntry, itemTemplate->GetMaxStackSize());
+                itemCount -= itemTemplate->GetMaxStackSize();
+            }
+            else
+            {
+                allItems.emplace_back(toSendItems);
+                toSendItems.clear();
+            }
+        }
+
+        toSendItems.emplace_back(itemEntry, itemCount);
+        allItems.emplace_back(toSendItems);
+    };
+
+    for (auto& [itemEntry, itemCount] : mailItems)
+    {
+        AddMailItem(itemEntry, itemCount);
+    }
+
+    CharacterDatabaseTransaction trans = CharacterDatabase.BeginTransaction();
+
+    for (auto const& items : allItems)
+    {
+        MailSender sender(MAIL_CREATURE, 34337 /* The Postmaster */);
+        MailDraft draft("Recovered Item", "We recovered a lost item in the twisting nether and noted that it was yours.$B$BPlease find said object enclosed."); // This is the text used in Cataclysm, it probably wasn't changed.
+
+        for (auto const& [itemEntry, itemCount] : items)
+        {
+            if (Item* mailItem = Item::CreateItem(itemEntry, itemCount))
+            {
+                mailItem->SaveToDB(trans);
+                draft.AddItem(mailItem);
+            }
+        }
+
+        draft.SendMailTo(trans, MailReceiver(this, GetGUID().GetCounter()), sender);
+    }
+
+    CharacterDatabase.CommitTransaction(trans);
+}

src/server/game/Entities/Player/PlayerQuest.cpp

@@ -677,9 +677,9 @@ void Player::RewardQuest(Quest const* quest, uint32 reward, Object* questGiver,
 
     RemoveTimedQuest(quest_id);
 
-    std::vector<std::pair<uint32, uint32> > problematicItems;
+    std::vector<std::pair<uint32, uint32>> problematicItems;
 
-    if (quest->GetRewChoiceItemsCount() > 0)
+    if (quest->GetRewChoiceItemsCount())
     {
         if (uint32 itemId = quest->RewardChoiceItemId[reward])
         {
@@ -692,11 +692,13 @@ void Player::RewardQuest(Quest const* quest, uint32 reward, Object* questGiver,
                 sScriptMgr->OnQuestRewardItem(this, item, quest->RewardChoiceItemCount[reward]);
             }
             else
-                problematicItems.push_back(std::pair<uint32, uint32>(itemId, quest->RewardChoiceItemCount[reward]));
+            {
+                problematicItems.emplace_back(itemId, quest->RewardChoiceItemCount[reward]);
+            }
         }
     }
 
-    if (quest->GetRewItemsCount() > 0)
+    if (quest->GetRewItemsCount())
     {
         for (uint32 i = 0; i < quest->GetRewItemsCount(); ++i)
         {
@@ -711,7 +713,7 @@ void Player::RewardQuest(Quest const* quest, uint32 reward, Object* questGiver,
                     sScriptMgr->OnQuestRewardItem(this, item, quest->RewardItemIdCount[i]);
                 }
                 else
-                    problematicItems.push_back(std::pair<uint32, uint32>(itemId, quest->RewardItemIdCount[i]));
+                    problematicItems.emplace_back(itemId, quest->RewardItemIdCount[i]);
             }
         }
     }
@@ -719,21 +721,7 @@ void Player::RewardQuest(Quest const* quest, uint32 reward, Object* questGiver,
     // Xinef: send items that couldn't be added properly by mail
     if (!problematicItems.empty())
     {
-        CharacterDatabaseTransaction trans = CharacterDatabase.BeginTransaction();
+        SendItemRetrievalMail(problematicItems);
-        MailSender sender(MAIL_CREATURE, 34337 /* The Postmaster */ );
-        MailDraft draft("Recovered Item", "We recovered a lost item in the twisting nether and noted that it was yours.$B$BPlease find said object enclosed."); // This is the text used in Cataclysm, it probably wasn't changed.
-
-        for (std::vector<std::pair<uint32, uint32> >::const_iterator itr = problematicItems.begin(); itr != problematicItems.end(); ++itr)
-        {
-            if(Item* item = Item::CreateItem(itr->first, itr->second))
-            {
-                item->SaveToDB(trans);
-                draft.AddItem(item);
-            }
-        }
-
-        draft.SendMailTo(trans, MailReceiver(this, GetGUID().GetCounter()), sender);
-        CharacterDatabase.CommitTransaction(trans);
     }
 
     RewardReputation(quest);