using UnityEngine;
using System.Collections.Generic;
using Spine.Unity;

[CreateAssetMenu(fileName = "NewEnemyData", menuName = "SO_Data/EnemyData")]
public class EnemyData_SO : ScriptableObject
{
    [Header("Inspector")]
    [Tooltip("Documentation text normalized.")]
    public string enemyName;
    public Sprite enemy_Image;

    [Header("Spine Settings")]
    [Tooltip("Assign the SkeletonDataAsset for the Spine animation here")]
    public SkeletonDataAsset skeletonDataAsset;
    [SerializeField] private float xOffset = 0f;
    [SerializeField] private float yOffset = -400f;
    [SerializeField] private float scaleRatio = 1f;
    [SerializeField] private bool flipX = false;
    public float XOffset
    {
        get => xOffset;
        set => xOffset = value;
    }
    public float YOffset
    {
        get => yOffset;
        set => yOffset = value;
    }
    public float ScaleRatio
    {
        get => scaleRatio;
        set => scaleRatio = value;
    }
    public bool FlipX
    {
        get => flipX;
        set => flipX = value;
    }

    public Sprite enemy_Profile;

    [Tooltip("Documentation text normalized.")]
    public int enemyID;

    [Header("Inspector")]
    public EnemyType enemyType = EnemyType.Simple;

    public enum EnemyType
    {
        Simple,
        Elite,
        Boss,
        Legend,
        Guardian
    }

    //[Header("Stats")]
    [System.Serializable]
    public struct EnemyDifficultyStats
    {
        public int difficultyID;
        public int enemy_maxHP;
        public float enemy_damageResistance;
        public int enemy_baseAttack;
        public int enemy_maxMana;
        public int scoreOnBeingDefeated;
    }

    [Tooltip("Stats for each difficulty level (0-3).")]
    public List<EnemyDifficultyStats> difficultyStatsList = new List<EnemyDifficultyStats>();

    /// <summary>
    /// Gets the stats for a specific difficulty ID (0-3).
    /// If not found, returns the first available stats or default.
    /// </summary>
    public EnemyDifficultyStats GetStatsByDifficultyID(int difficultyID)
    {
        if (difficultyStatsList == null || difficultyStatsList.Count == 0) return default;
        
        for (int i = 0; i < difficultyStatsList.Count; i++)
        {
            if (difficultyStatsList[i].difficultyID == difficultyID) return difficultyStatsList[i];
        }

        return difficultyStatsList[0];
    }

    /// <summary>
    /// Updates the max HP for a specific difficulty at runtime.
    /// Note: This modifies the ScriptableObject asset.
    /// </summary>
    public void SetMaxHPByDifficulty(int difficultyID, int newHP)
    {
        if (difficultyStatsList == null) return;
        for (int i = 0; i < difficultyStatsList.Count; i++)
        {
            if (difficultyStatsList[i].difficultyID == difficultyID)
            {
                var stats = difficultyStatsList[i];
                stats.enemy_maxHP = newHP;
                difficultyStatsList[i] = stats;
                return;
            }
        }
    }

    // Skills (same idea as AllyHero_SO)
    [Header("Skills")]
    public SkillDefinition[] availableSkills;
    [Tooltip("Indexes into availableSkills for preselected skills; empty means none selected")]
    public int[] selectedSkillIndices = new int[0];

    [Tooltip("Primary selected skill index into availableSkills (-1 = none)")]
    public int primarySkillIndex = -1;

    public SkillDefinition GetPrimarySkill()
    {
        if (availableSkills == null || primarySkillIndex < 0 || primarySkillIndex >= availableSkills.Length) return null;
        return availableSkills[primarySkillIndex];
    }

    // New: groups of skills. Each group contains a numeric skillGroupID and a variable-length list of SkillDefinitions.
    [Tooltip("Skill groups defined on this enemy. Each SkillGroup has a numeric skillGroupID which can be equipped into slots to allow activation of the entire group via that ID.")]
    public SkillGroup[] skillGroups = new SkillGroup[0];

    [Tooltip("Equipped skill group IDs for this enemy. Each int references a skillGroupID defined in skillGroups. Use 0 to indicate empty.")]
    public int[] equippedSkillGroupIDs = new int[0];

    [Header("Combat Settings")]
    [Tooltip("Documentation text normalized.")]
    [Range(0f, 1f)]
    public float manaGainOnDamagePercent = 0.2f; // default 20%
}