using Microsoft.Extensions.Logging;
using RPG.Network.Proto;

namespace RPG.Services.Gameserver.Game.Entity;

internal class EntityManager
{
    private readonly Dictionary<uint, EntityBase> _entities = [];

    private readonly ILogger _logger;
    private readonly IEntityEventListener _listener;

    public EntityManager(ILogger<EntityManager> logger, IEntityEventListener listener)
    {
        _logger = logger;
        _listener = listener;
    }

    public IEnumerable<SceneEntityInfo> EntityInfoList => _entities.Values.Select(entity => entity.SceneEntityInfo);

    public AvatarEntity? GetAvatar(uint uid, uint avatarId)
    {
        foreach (EntityBase entity in _entities.Values)
        {
            if (entity is AvatarEntity avatar)
            {
                if (avatar.Uid == uid && avatar.AvatarId == avatarId)
                    return avatar;
            }
        }

        return null;
    }

    public void NotifyUpdate(EntityBase entity)
    {
        _listener.OnUpdateEntity(entity.SceneEntityInfo);
    }

    public void RemoveEntities(IEnumerable<uint> ids)
    {
        foreach (uint id in ids)
        {
            _ = _entities.Remove(id);
        }

        _ = _listener.OnRemoveEntities(ids);
    }

    public void AddEntity(EntityBase entity)
    {
        if (!_entities.TryAdd(entity.Id, entity))
            _logger.LogError("AddEntity: entity with id {entityId} already added!", entity.Id);
    }

    public EntityBase? GetEntityById(uint entityId)
    {
        _ = _entities.TryGetValue(entityId, out EntityBase? entity);
        return entity;
    }

    public void Clear()
    {
        _entities.Clear();
    }
}