using UnityEngine;

[CreateAssetMenu(fileName = "StatEffect", menuName = "Stat Effect")]
public class EffectSO : ScriptableObject
{
    /// <summary>
    /// Additive change applied before multiplicative scaling.
    /// </summary>
    public long Base;
    /// <summary>
    /// Multiplicative scaling in units of hundredth of a percent.
    /// E.g., 625 permyriad is 6.25%.
    /// </summary>
    public long Permyriad;
    /// <summary>
    /// Additive change applied after multiplicative scaling.
    /// </summary>
    public long Flat;

    /// <summary>
    /// Create a new attribute effect instance.
    /// </summary>
    /// <param name="baseBonus"></param>
    /// <param name="permyriad"></param>
    /// <param name="flat"></param>
    /// <returns></returns>
    public static EffectSO New(long baseBonus = 0, long permyriad = 0, long flat = 0)
    {
        var effect = ScriptableObject.CreateInstance<EffectSO>();
        effect.Base = baseBonus;
        effect.Permyriad = permyriad;
        effect.Flat = flat;
        return effect;
    }

    /// <summary>
    /// Create a new EffectSO from a percentage.
    /// </summary>
    /// <param name="p">Percentage. E.g., 6.25f results in a Permyriad of 625.</param>
    /// <returns>Effect with the given percentage.</returns>
    public static EffectSO FromPercent(float p)
    {
        return New(permyriad: (long)(p * 100));
    }
}