using UnityEngine;

[CreateAssetMenu(fileName = "New Stat Definition", menuName = "RiftMayhem/Stat Definition")]
public class StatDefinition : ScriptableObject
{
    [Header("Identity & Display")]
    [SerializeField] private string statKey = "";
    [SerializeField] private string displayName = "";
    [SerializeField] private string shortName = "";
    [TextArea(2, 4)]
    [SerializeField] private string description = "";
    [SerializeField] private Sprite icon = null; // Nullable by default

    [Header("Categorization")]
    [SerializeField] private StatCategory category = StatCategory.Damage;
    [SerializeField] private bool isPrimary = false;
    [SerializeField] private bool showInUI = true;
    [SerializeField] private bool showInTooltips = true;

    [Header("Item Generation")]
    [SerializeField] private bool canRollOnItems = true;
    [SerializeField] private float defaultWeight = 1f;
    [SerializeField] private bool canBeFlat = true;
    [SerializeField] private bool canBePercent = true;

    [Header("Value Settings")]
    [SerializeField] private float defaultBaseValue = 0f;
    [SerializeField] private float minValue = float.MinValue;
    [SerializeField] private float maxValue = float.MaxValue;
    [SerializeField] private bool roundToInteger = false;

    // Public read-only properties
    public string StatKey => statKey;
    public string DisplayName => displayName;
    public string ShortName => shortName;
    public string Description => description;
    public Sprite Icon => icon; // Can be null
    public StatCategory Category => category;
    public bool IsPrimary => isPrimary;
    public bool ShowInUI => showInUI;
    public bool ShowInTooltips => showInTooltips;
    public bool CanRollOnItems => canRollOnItems;
    public float DefaultWeight => defaultWeight;
    public bool CanBeFlat => canBeFlat;
    public bool CanBePercent => canBePercent;
    public float DefaultBaseValue => defaultBaseValue;
    public float MinValue => minValue;
    public float MaxValue => maxValue;
    public bool RoundToInteger => roundToInteger;

    // Validation in the editor
    private void OnValidate()
    {
        // Ensure statKey is not empty and follows naming conventions
        if (string.IsNullOrEmpty(statKey))
        {
            statKey = name.Replace(" ", "").Replace("(", "").Replace(")", "").ToLower();
        }

        // Ensure displayName defaults to a readable version of statKey if empty
        if (string.IsNullOrEmpty(displayName) && !string.IsNullOrEmpty(statKey))
        {
            displayName = System.Text.RegularExpressions.Regex.Replace(statKey, "([a-z])([A-Z])", "$1 $2");
        }

        // Ensure shortName defaults to displayName if empty
        if (string.IsNullOrEmpty(shortName) && !string.IsNullOrEmpty(displayName))
        {
            shortName = displayName.Length > 8 ? displayName.Substring(0, 8) : displayName;
        }

        // Ensure at least one value type is allowed
        if (!canBeFlat && !canBePercent)
        {
            canBeFlat = true;
        }

        // Ensure min/max values make sense
        if (minValue > maxValue)
        {
            maxValue = minValue;
        }

        // Ensure default weight is positive
        if (defaultWeight < 0f)
        {
            defaultWeight = 0f;
        }
    }

    // Utility method to check if an icon exists
    public bool HasIcon => icon != null;

    // Utility method to get formatted display name with fallback
    public string GetDisplayName(bool useShort = false)
    {
        if (useShort && !string.IsNullOrEmpty(shortName))
            return shortName;

        return !string.IsNullOrEmpty(displayName) ? displayName : statKey;
    }
}

public enum StatCategory
{
    Attributes,   // Cunning, Flow, Presence
    Damage,       // AttackDamage, SpellDamage
    Offensive,    // AttackSpeed, CritChance, CritDamage
    Resource,     // MaxHealth, HealthRegen, MaxMana, ManaRegen
    Defensive,    // Armor, MagicResistance, DodgeChance, BlockChance
    Utility,      // AreaEffectiveness, CooldownReduction, MovementSpeed
    Misc         // ReputationGainIncrease, GoldCostReduction
}