using UnityEngine;
using UnityEngine.UI;

/// <summary>
/// 玩家技能系统（召唤师技能）
/// 管理技能释放和冷却
/// </summary>
public class PlayerSkillSystem : MonoBehaviour
{
    [Header("技能1：群体治疗")]
    public Button skill1Button;
    public Text skill1CooldownText;
    public float skill1Cooldown = 20f;
    public float skill1HealAmount = 100f;
    private float skill1RemainingCooldown = 0f;

    [Header("技能2：全屏AOE")]
    public Button skill2Button;
    public Text skill2CooldownText;
    public float skill2Cooldown = 20f;
    public float skill2Damage = 80f;
    private float skill2RemainingCooldown = 0f;

    private void Start()
    {
        // 绑定按钮点击事件
        if (skill1Button != null)
        {
            skill1Button.onClick.AddListener(UseSkill1);
        }

        if (skill2Button != null)
        {
            skill2Button.onClick.AddListener(UseSkill2);
        }
    }

    private void Update()
    {
        // 更新技能1冷却
        if (skill1RemainingCooldown > 0)
        {
            skill1RemainingCooldown -= Time.deltaTime;
            if (skill1Button != null)
            {
                skill1Button.interactable = false;
            }
            if (skill1CooldownText != null)
            {
                skill1CooldownText.text = Mathf.CeilToInt(skill1RemainingCooldown).ToString();
                skill1CooldownText.gameObject.SetActive(true);
            }
        }
        else
        {
            if (skill1Button != null)
            {
                skill1Button.interactable = true;
            }
            if (skill1CooldownText != null)
            {
                skill1CooldownText.gameObject.SetActive(false);
            }
        }

        // 更新技能2冷却
        if (skill2RemainingCooldown > 0)
        {
            skill2RemainingCooldown -= Time.deltaTime;
            if (skill2Button != null)
            {
                skill2Button.interactable = false;
            }
            if (skill2CooldownText != null)
            {
                skill2CooldownText.text = Mathf.CeilToInt(skill2RemainingCooldown).ToString();
                skill2CooldownText.gameObject.SetActive(true);
            }
        }
        else
        {
            if (skill2Button != null)
            {
                skill2Button.interactable = true;
            }
            if (skill2CooldownText != null)
            {
                skill2CooldownText.gameObject.SetActive(false);
            }
        }
    }

    /// <summary>
    /// 使用技能1：群体治疗
    /// </summary>
    public void UseSkill1()
    {
        if (skill1RemainingCooldown > 0)
        {
            return;
        }

        Debug.Log($"释放技能1：群体治疗（恢复 {skill1HealAmount} 生命）");

        // 对所有友方单位施加治疗
        BuffSystem.Instance.ApplyGroupHeal(skill1HealAmount);

        // 开始冷却
        skill1RemainingCooldown = skill1Cooldown;

        // TODO: 播放技能特效
    }

    /// <summary>
    /// 使用技能2：全屏AOE伤害
    /// </summary>
    public void UseSkill2()
    {
        if (skill2RemainingCooldown > 0)
        {
            return;
        }

        Debug.Log($"释放技能2：全屏AOE（造成 {skill2Damage} 伤害）");

        // 对所有敌方单位造成伤害
        var enemies = FindObjectsOfType<UnitBase>();
        int hitCount = 0;

        foreach (var unit in enemies)
        {
            var team = unit.GetComponent<UnitTeam>();
            if (team != null && team.teamId == 1) // 敌方
            {
                var healthBar = unit.GetComponent<WorldHealthBar>();
                if (healthBar != null && !healthBar.IsDead)
                {
                    healthBar.TakeDamage(skill2Damage);
                    hitCount++;
                }
            }
        }

        Debug.Log($"全屏AOE命中 {hitCount} 个敌人");

        // 开始冷却
        skill2RemainingCooldown = skill2Cooldown;

        // TODO: 播放技能特效
    }

    /// <summary>
    /// 重置所有技能冷却（测试用）
    /// </summary>
    public void ResetAllCooldowns()
    {
        skill1RemainingCooldown = 0f;
        skill2RemainingCooldown = 0f;
    }
}