using Convention;
using Demo.Game.Attr;
using Demo.Game.ConfigType;
using System.IO;
using UnityEngine;

namespace Demo.Game
{
    namespace ConfigType
    {
        public class LookAtAnchorConfig : UpdatementIntConfig
        {
            [Content] public bool IsEnableUpdateEveryTick = false;
            public override void Deserialize(BinaryReader reader)
            {
                IsEnableUpdateEveryTick = BinarySerializeUtility.ReadBool(reader);
                base.Deserialize(reader);
            }

            public override void Serialize(BinaryWriter writer)
            {
                BinarySerializeUtility.WriteBool(writer, IsEnableUpdateEveryTick);
                base.Serialize(writer);
            }
        }
    }

    [Scriptable]
    public class LookAtAnchor : Updatement<int>
    {
        protected override ScriptLoadableConfig MakeConfig()
        {
            return new UpdatementIntConfig();
        }
        public static LookAtAnchor Make()
        {
            return new GameObject().AddComponent<LookAtAnchor>();
        }

        protected override int Lerp(int begin, int end, float t)
        {
            return begin;
        }

        public int LookAtObjectCache;
        public bool IsEnableUpdateEveryTick
        {
            get => GetConfig<LookAtAnchorConfig>().IsEnableUpdateEveryTick;
            set => GetConfig<LookAtAnchorConfig>().IsEnableUpdateEveryTick = value;
        }

        protected override void UpdateData(int data)
        {
            ScriptableObject target = GetRoot().FindWithIndex(data);
            if (data != LookAtObjectCache)
            {
                LookAtObjectCache = data;
                if (target != null)
                    transform.LookAt(target.transform);
            }
            else if (IsEnableUpdateEveryTick)
            {
                if (target != null)
                    transform.LookAt(target.transform);
            }
        }

        /// <summary>
        /// 在指定时刻切换面向的物体，并尝试一次更新
        /// </summary>
        [Convention.RScript.Variable.Attr.Method]
        public void Add(float time, ScriptableObject target)
        {
            ManualAddEntry(time, GetRoot().FindIndex(target), default);
        }

        /// <summary>
        /// 启动自动更新，将持续锁定面向的物体并更新
        /// </summary>
        [Convention.RScript.Variable.Attr.Method]
        public void EnableUpdateEveryTick()
        {
            IsEnableUpdateEveryTick = true;
        }
    }
}