using UnityEngine;

public class MagicCaster : MonoBehaviour
{
    private PlayerStats playerStats;
    private Spellbook spellbook;
    private Light activeLight;

    void Start()
    {
        playerStats = PlayerController.Instance.playerStats;
        spellbook = PlayerController.Instance.spellbook;
    }

    public void CastSpell(Spell spell, GameObject target = null)
    {
        if (!spellbook.HasSpell(spell) || playerStats.mana < spell.manaCost) return;

        playerStats.SpendMana(spell.manaCost);
        Debug.Log($"Casting {spell.spellName}...");

        switch (spell.type)
        {
            case SpellType.Utility:
                CastUtilitySpell(spell, target);
                break;
            case SpellType.Combat:
                CastCombatSpell(spell, target);
                break;
        }
    }
    
    private void CastUtilitySpell(Spell spell, GameObject target)
    {
        switch (spell.utilityEffect)
        {
            case UtilityEffect.Light:
                if (activeLight != null) Destroy(activeLight.gameObject);
                
                GameObject lightGO = new GameObject($"{spell.spellName} Light");
                lightGO.transform.SetParent(transform);
                lightGO.transform.localPosition = Vector3.up * 1.5f;
                activeLight = lightGO.AddComponent<Light>();
                activeLight.intensity = 8;
                activeLight.range = 10;
                Destroy(lightGO, spell.duration);
                break;

            case UtilityEffect.Charm:
                if (target != null && target.GetComponent<NPCInteraction>() != null)
                {
                    Debug.Log($"You cast {spell.spellName} on {target.name}. They seem more agreeable.");
                }
                break;
        }
    }
    
    private void CastCombatSpell(Spell spell, GameObject target)
    {
        if (BattleSystem.Instance.state != BattleSystem.BattleState.PLAYERTURN) return;

        if (target != null)
        {
            var enemyStats = target.GetComponent<CharacterStats>();
            if (enemyStats != null)
            {
                //int damage = Dice.Roll(spell.damageDice) + spell.baseDamage + playerStats.intelligence;
                //enemyStats.TakeDamage(damage, spell.damageType);
            }
        }
    }
}