namespace ET
{
    /// <summary>
    /// 监视hp数值变化，改变血条值
    /// </summary>
    [NumericWatcher(NumericType.Level)]
    public class NumericWatcher_Level : INumericWatcher
    {
        public async ETTask Run(Entity entity, float old, float value)
        {
            if (!entity) return;
            Unit unit = entity.As<Unit>();
            if (unit.UnitType != UnitType.Player) return;
            int oldLevel = MathHelper.RoundToInt(old);
            int level = MathHelper.RoundToInt(value);
            if (oldLevel == level) return;
            NumericComponent num = unit.GetComponent<NumericComponent>();

            //!账户信息变化
            User user = await UserComponent.Instance.Query(unit.Id);
            user.Level = level;
            UserComponent.Instance.Save(user).Coroutine();
            //!属性变化
            PlayerData data = unit.GetComponent<PlayerData>();
            CharacterHelper.AddAutoCharacterPoint(num, data, oldLevel, level);
            CharacterHelper.AddSkillPoint(data, level);

            //!任务
            await Game.EventSystem.Publish(new EventType.UpdateTaskState
            {
                unit = unit,
                type = TaskTargetType.LevelTask,
                value = level
            });
            DelaySendSyncAttributeComponent.instance.Add(unit, NumericType.Level, value);
            LevelLog levelLog = await DBComponent.Instance.Query<LevelLog>(unit.Id);
            if (levelLog == null)
            {
                levelLog = Entity.Create(typeof(LevelLog), false).As<LevelLog>();
                levelLog.Id = unit.Id;
                levelLog.levelList = new System.Collections.Generic.LinkedList<int>();
            }
            levelLog.levelList.AddLast(MathHelper.RoundToInt(value));
            if (levelLog.levelList.Count > 20)
            {
                levelLog.levelList.RemoveFirst();
            }
            await DBComponent.Instance.Save(levelLog);
            await ETTask.CompletedTask;
        }
    }
}