levelup, item and synchro device fixes

nksrv/LobbyServer/Msgs/Character/LevelUp.cs

@@ -0,0 +1,56 @@
+using nksrv.Utils;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace nksrv.LobbyServer.Msgs.Character
+{
+    [PacketPath("/character/levelup")]
+    public class LevelUp : LobbyMsgHandler
+    {
+        protected override async Task HandleAsync()
+        {
+            var req = await ReadData<ReqCharacterLevelUp>();
+            var user = GetUser();
+            var response = new ResCharacterLevelUp();
+
+            foreach (var item in user.Characters.ToArray())
+            {
+                if (item.Csn == req.Csn)
+                {
+                    item.Level = req.Level;
+                    // TODO: subtract currency
+
+
+                    response.Character = new() { 
+                        CostumeId = item.CostumeId, 
+                        Csn = item.Csn,
+                        Lv = item.Level,
+                        Skill1Lv = item.Skill1Lvl,
+                        Skill2Lv = item.Skill2Lvl,
+                        UltiSkillLv = item.UltimateLevel,
+                        Grade = item.Grade,
+                        Tid = item.Tid
+                    };
+                    var highestLevelCharacters = user.Characters.OrderByDescending(x => x.Level).Take(5).ToList();
+
+                    response.SynchroLv = highestLevelCharacters.Last().Level;
+
+                    foreach (var c in highestLevelCharacters)
+                    {
+                        response.SynchroStandardCharacters.Add(c.Tid);
+                    }
+
+                    break;
+                }
+            }
+            JsonDb.Save();
+
+         
+
+            WriteData(response);
+        }
+    }
+}