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

public class GamePlayBuffMgr : MonoSingleton<GamePlayBuffMgr>
{
    List<BuffData> buffs = new();

    public event Action<BuffData, bool> OnChanged;

    private void Update()
    {
        for (int i = 0; i < buffs.Count;)
        {
            var buff = buffs[i];

            if (!buff.UpdateDuration(Time.fixedDeltaTime))
            {
                buffs.RemoveAt(i);
                OnChanged?.Invoke(buff, false);
            }
            else
            {
                i++;
            }
        }
    }

    public void AddBuffs(IReadOnlyList<BuffData> toAdd)
    {
        foreach (var buff in toAdd)
        {
            if(!buffs.Contains(buff))
            {
                buff.ResetDuration();
                buffs.Add(buff);
                OnChanged?.Invoke(buff, true);
            }
        }
    }

    public void AddBuffs(params BuffData[] buffs) => AddBuffs(buffs);

    public void RemoveBuffs(IReadOnlyList<BuffData> toRemove)
    {
        foreach (var buff in toRemove)
        {
            if (buffs.Remove(buff))
                OnChanged?.Invoke(buff, false);
        }
    }

    public void RemoveBuffs(params BuffData[] buffs) => RemoveBuffs(buffs);

    public IReadOnlyList<BuffData> GetBuffs(eEffectType key, object subKey = null) => buffs.FindAll(b => b.HasEffect(key, subKey));
    public IReadOnlyList<ValueModifier> GetValues(eEffectType key, object subKey = null)
    {
        List<ValueModifier> values = new();
        foreach (var buff in buffs)
        {
            if (buff.TryGetEffect(key, subKey, out var effect))
                values.Add(effect.Value);
        }
        return values;
    }
 }