using Convention;
using Demo.Attr;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using Unity.Collections;
using UnityEngine;
using UnityEngine.Rendering;

namespace Demo.Game
{
    [Scriptable]
    public class DDT : ScriptableObject
    {
        protected override bool IsSelfEnableUpdate => false;
        public static DDT Make()
        {
            return new GameObject().AddComponent<DDT>();
        }

        public NativeArray<float> Datas = new(128, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
        public int Count { get; private set; } = 0;

        [Convention.RScript.Variable.Attr.Method]
        public void Add(float value)
        {
            if (Count >= Datas.Length)
                Datas.ResizeArray(Mathf.FloorToInt(Count * 1.5f));
            Datas[Count] = value;
            Count++;
        }

        [Convention.RScript.Variable.Attr.Method]
        public void Add(int barSplitTimes, int barCount, int tickCount)
        {
            Add((barCount + tickCount / (float)barSplitTimes) * OneBarTime);
        }

        [Convention.RScript.Variable.Attr.Method]
        public float At(int index)
        {
            if (index < 0)
                index = Count + index;
            if (index < 0 || index >= Count)
                throw new IndexOutOfRangeException($"{index} is out of [0, {Count})");
            return Datas[index];
        }

        /// <summary>
        /// 获取数据长度
        /// </summary>
        /// <returns></returns>
        [Convention.RScript.Variable.Attr.Method]
        public int GetCount()
        {
            return Count;
        }

        private void OnDestroy()
        {
            if (Datas.IsCreated)
                Datas.Dispose();
        }

        #region Serialize

        protected override bool IsImptSerialize => true;
        protected override IEnumerator CreateAndLoadingImptCacheFile(ToolFile scriptFile, ToolFile cacheFile)
        {
            yield return this.ParseScript2Expr(scriptFile.LoadAsText());
            using var stream = File.OpenWrite(cacheFile.GetFullPath());
            using var writer = new BinaryWriter(stream);
            writer.Write(Count);
            for (int i = 0; i < Count; i++)
            {
                writer.Write(Datas[i]);
            }
        }
        protected override IEnumerator LoadFromImptCacheFile(ToolFile cacheFile)
        {
            using var stream = File.OpenRead(cacheFile.GetFullPath());
            using var reader = new BinaryReader(stream);
            Count = reader.ReadInt32();
            Datas.ResizeArray(Mathf.Max(128, Count));
            for (int i = 0; i < Count; i++)
            {
                Datas[i] = reader.ReadSingle();
            }
            yield break;
        }

        #endregion

#if UNITY_EDITOR
        [Setting, SerializeField] private List<float> d_Datas = new();
        protected override IEnumerator DoSomethingDuringApplyScript()
        {
            yield return base.DoSomethingDuringApplyScript();
            for (int i = 0; i < Count; i++)
                d_Datas.Add(Datas[i]);
        }

#endif
    }
}