using RPG.GameCore.Excel;
using RPG.GameCore.Level;
using RPG.GameCore.Level.Floor;
using RPG.GameCore.Level.Group;
using RPG.GameCore.Level.Objects;
using RPG.Network.Proto;
using RPG.Services.Gameserver.Game.Entity;
using RPG.Services.Gameserver.Game.Entity.Factory;
using RPG.Services.Gameserver.Game.Team;
using RPG.Services.Gameserver.Game.Util;
using MazeInfo = RPG.Network.Proto.Maze;

namespace RPG.Services.Gameserver.Game.Maze;

internal class MazeManager
{
    private readonly EntityFactory _entityFactory;

    private readonly ExcelTables _excelTables;
    private readonly LevelTables _levelTables;

    private MapEntryRow? _mapEntry;
    private LevelFloorInfo? _floor;

    private PlayerTeam? _playerTeam;
    private uint _uid;

    public EntityManager EntityManager { get; }

    public MazeManager(EntityManager entityManager, EntityFactory entityFactory, ExcelTables excelTables, LevelTables levelTables)
    {
        EntityManager = entityManager;
        _entityFactory = entityFactory;
        _excelTables = excelTables;
        _levelTables = levelTables;
    }

    public void ResetAvatarPosition()
    {
        foreach (TeamMember? member in _playerTeam!.Members)
        {
            if (member == null) continue;

            AvatarEntity? entity = EntityManager.GetAvatar(_uid, member.AvatarId);

            if (entity != null)
            {
                entity.SetMotion(CreateInitialAvatarMotion());
                EntityManager.NotifyMove(entity);
            }
        }
    }

    public void RemoveEntities(IEnumerable<uint> entities)
    {
        EntityManager.RemoveEntities(entities);
    }

    public void SetPlayerUid(uint uid)
    {
        _uid = uid;
    }

    public void EnterMaze(uint entryId, PlayerTeam team)
    {
        BeforeEnter();

        _playerTeam = team;
        _mapEntry = _excelTables.GetExcelRow<MapEntryRow>(ExcelType.MapEntry, entryId) 
            ?? throw new ArgumentException("EnterMaze: specified entryId doesn't exist!", nameof(entryId));

        _floor = _levelTables.GetFloorInfo(_mapEntry.FloorID);

        AddTeamMemberEntities();
        InitLevelGroups();
    }

    public MazeInfo Maze
    {
        get
        {
            if (_mapEntry == null) throw new InvalidOperationException("GetMaze: maze not loaded!");

            return new()
            {
                MapEntryId = _mapEntry.ID,
                Id = _mapEntry.PlaneID,
                Floor = new()
                {
                    FloorId = _mapEntry.FloorID,
                    Scene = SceneInfo
                }
            };
        }
    }

    public SceneInfo SceneInfo 
    { 
        get
        {
            if (_mapEntry == null || _playerTeam == null) throw new InvalidOperationException("GetSceneInfo: scene not loaded!");

            AvatarEntity? leaderEntity = EntityManager.GetAvatar(_uid, _playerTeam.Leader.AvatarId);

            SceneInfo info = new()
            {
                EntryId = _mapEntry.ID,
                PlaneId = _mapEntry.PlaneID,
                FloorId = _mapEntry.FloorID,
                LeaderEntityId = leaderEntity?.Id ?? 0,
            };

            info.EntityList.AddRange(EntityManager.EntityInfoList);

            return info;
        } 
    }

    private void InitLevelGroups()
    {
        foreach (LevelGroupInstanceInfo groupInstanceInfo in _floor!.GroupList)
        {
            LevelGroupInfo? levelGroup = _levelTables.GetGroupInfo(groupInstanceInfo.GroupGUID);
            if (levelGroup == null) continue;

            if (levelGroup.MonsterList != null)
            {
                foreach (LevelMonsterInfo levelMonster in levelGroup.MonsterList)
                {
                    if (!levelMonster.CreateOnInitial) continue;

                    NpcMonsterEntity monsterEntity = _entityFactory.CreateNpcMonsterEntity(levelMonster, groupInstanceInfo.ID);
                    monsterEntity.SetMotion(MazeUtil.CreateDefaultMotion(levelMonster));

                    EntityManager.AddEntity(monsterEntity);
                }
            }

            if (levelGroup.PropList != null)
            {
                foreach (LevelPropInfo levelProp in levelGroup.PropList)
                {
                    if (!levelProp.CreateOnInitial) continue;

                    PropEntity propEntity = _entityFactory.CreatePropEntity(levelProp, groupInstanceInfo.ID);
                    propEntity.SetMotion(MazeUtil.CreateDefaultMotion(levelProp));

                    EntityManager.AddEntity(propEntity);
                }
            }

            if (levelGroup.NPCList != null)
            {
                foreach (LevelNPCInfo levelNPC in levelGroup.NPCList)
                {
                    if (!levelNPC.CreateOnInitial) continue;

                    NpcEntity npcEntity = _entityFactory.CreateNpcEntity(levelNPC, groupInstanceInfo.ID);
                    npcEntity.SetMotion(MazeUtil.CreateDefaultMotion(levelNPC));

                    EntityManager.AddEntity(npcEntity);
                }
            }
        }
    }

    private void AddTeamMemberEntities()
    {
        foreach (TeamMember? member in _playerTeam!.Members)
        {
            if (member == null) continue;

            AvatarEntity entity = _entityFactory.CreateAvatarEntity(member.AvatarId, member.AvatarType, _uid);
            entity.SetMotion(CreateInitialAvatarMotion());

            EntityManager.AddEntity(entity);
        }
    }

    private MotionInfo CreateInitialAvatarMotion()
    {
        LevelGroupInfo startGroup = _levelTables.GetGroupInfo(_floor!.StartGroup.GroupGUID)!;
        LevelAnchorInfo startAnchor = startGroup.AnchorList!.First(anchor => anchor.ID == _floor.StartAnchorID);

        return MazeUtil.CreateDefaultMotion(startAnchor);
    }

    private void BeforeEnter()
    {
        _entityFactory.Reset();
        EntityManager.Clear();
    }
}