using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ProjectileInfo : MonoBehaviour
{
    public static bool ProjectileInfoOn = false;
    public static ProjectileInfo Ins;

    public Material[] arr_materials; // 0 얼음, 1 히트

    Dictionary<string, List<ProjectileBase>> dic_projectile = new Dictionary<string, List<ProjectileBase>>();

    // ProjectileData Pool
    private Stack<ProjectileData> projectileDataPool = new Stack<ProjectileData>();

    private void Awake()
    {
        Ins = this;
        ProjectileInfoOn = true;
    }

    IEnumerator Start()
    {
        while (!TableChecker.Ins.CheckAllLoad())
            yield return new WaitForSeconds(0.1f);

        var lst = table_effectlist.Ins.Get_DataList(2);
        for (int i = 0; i < lst.Count; i++)
        {
            dic_projectile.Add(lst[i].s_EffectPrefab, new List<ProjectileBase>());

            for (int j = 0; j < lst[i].n_PreLoadCount; j++)
                Load_Projectile(true, lst[i].s_EffectPrefab, null);
        }
    }

    void Load_Projectile(bool loadFirst, string projectile, Action<ProjectileBase> act)
    {
        AddrResourceMgr.Ins.LoadObject<GameObject>($"Assets/Res_Addr/Projectile/{projectile}.prefab", handle =>
        {
            var temp = DSUtil.Get_Clone<ProjectileBase>(handle.Result, transform);
            if (!loadFirst) temp.Off_FisrLoad();
            dic_projectile[projectile].Add(temp);
            act?.Invoke(temp);
        });
    }

    void Get_Projectile(string projectile, Action<ProjectileBase> act)
    {
        if (!dic_projectile.ContainsKey(projectile))
            dic_projectile.Add(projectile, new List<ProjectileBase>());

        for (int i = 0; i < dic_projectile[projectile].Count; i++)
        {
            if (!dic_projectile[projectile][i].gameObject.activeInHierarchy)
            {
                act?.Invoke(dic_projectile[projectile][i]);
                return;
            }
        }

        Load_Projectile(true, projectile, act);
    }

    // Pool에서 ProjectileData 가져오기
    private ProjectileData GetProjectileData()
    {
        return projectileDataPool.Count > 0 ? projectileDataPool.Pop() : new ProjectileData();
    }

    // Pool에 ProjectileData 반환하기
    private void ReturnProjectileData(ProjectileData pd)
    {
        pd.Reset(); // 데이터 초기화
        projectileDataPool.Push(pd);
    }

    public void Shoot_Projectile(string projectile, Actor shooter, Actor target, float adddmgrate = 1f, Vector3? startpos = null, float liftTime = 4f, float skilldmg = 1f, Action<ProjectileBase> act = null)
    {
        Get_Projectile(projectile, proj =>
        {
            var pd = GetProjectileData(); // 풀에서 가져오기

            pd.shooter = shooter;
            pd.target = target;
            pd.HitDamage = adddmgrate;
            pd.LifeTime = liftTime;

            if (startpos.HasValue)
            {
                pd.eStartPos = eProjectileStartPos.Custom;
                pd.v3_StartPos = startpos.Value;
                pd.LookTarget = true;
            }
            else
            {
                pd.eStartPos = eProjectileStartPos.ShooterCenter;
            }

            proj.Set(pd);
            act?.Invoke(proj);

            ReturnProjectileData(pd); // 사용 후 풀에 반환
        });
    }

    public void Shoot_Projectile(string projectile, ProjectileData pd, Action<ProjectileBase> act = null)
    {
        Get_Projectile(projectile, proj =>
        {
            proj.Set(pd);
            act?.Invoke(proj);
        });
    }
}