using UnityEngine;

/// <summary>
/// Base class for item behaviors. Allows different items to have
/// completely different use effects without modifying ItemData.
/// This is the Strategy pattern for item actions.
/// </summary>
public abstract class ItemBehavior : ScriptableObject
{
    [Header("Basic Settings")]
    [SerializeField] protected string behaviorName = "Use";
    [SerializeField] protected float duration = 0.5f;
    [SerializeField] protected string animTrigger = "Use";
    [SerializeField] protected float animSpeed = 1f;
    [SerializeField] protected float impactDelay = 0.2f;
    [SerializeField] protected bool canRepeat = false;

    [Header("Effects")]
    [SerializeField] protected AudioClip useSound;
    [SerializeField] protected GameObject useEffect;

    /// <summary>
    /// Whether this behavior consumes the item when used.
    /// </summary>
    public virtual bool IsConsumable => false;

    /// <summary>
    /// Check if this behavior can be used with the given user and target.
    /// </summary>
    /// <param name="user">The player/entity using the item</param>
    /// <param name="target">Optional target of the use</param>
    /// <returns>True if the behavior can be executed</returns>
    public abstract bool CanUse(GameObject user, GameObject target);

    /// <summary>
    /// Execute the behavior's effect.
    /// </summary>
    /// <param name="user">The player/entity using the item</param>
    /// <param name="target">Optional target of the use</param>
    public abstract void Use(GameObject user, GameObject target);

    /// <summary>
    /// Get the action descriptor for this behavior.
    /// </summary>
    public virtual ActionDescriptor GetActionDescriptor()
    {
        return new ActionDescriptor
        {
            ActionName = behaviorName,
            Duration = duration,
            AnimTrigger = animTrigger,
            AnimSpeed = animSpeed,
            ImpactDelay = impactDelay,
            CanRepeat = canRepeat,
            SoundEffect = useSound,
            ParticleEffect = useEffect
        };
    }

    /// <summary>
    /// Get a description of why the behavior cannot be used.
    /// </summary>
    public virtual string GetBlockedReason(GameObject user, GameObject target)
    {
        return null;
    }
}