using UnityEngine;
using UnityEngine.UI;
using TMPro;

/// <summary>
/// Body透明度控制器
/// 提供运行时调整Body模型透明度的功能
/// </summary>
public class BodyAlphaController : MonoBehaviour
{
    [Header("UI 控件")]
    public Slider alphaSlider;
    public TextMeshProUGUI alphaValueText;
    public Button resetButton;
    
    [Header("设置")]
    [Range(0f, 1f)]
    public float defaultAlpha = 0.6f;
    public bool showDebugInfo = false;
    
    private ProcessModelMatData materialProcessor;
    
    void Start()
    {
        // 查找材质处理组件
        FindMaterialProcessor();
        
        // 初始化UI
        InitializeUI();
    }
    
    private void FindMaterialProcessor()
    {
        // 尝试在场景中查找ProcessModelMatData组件
        materialProcessor = FindObjectOfType<ProcessModelMatData>();
        
        if (materialProcessor == null)
        {
            Debug.LogError("BodyAlphaController: 未找到ProcessModelMatData组件！");
        }
        else if (showDebugInfo)
        {
            Debug.Log("BodyAlphaController: 成功找到ProcessModelMatData组件");
        }
    }
    
    private void InitializeUI()
    {
        if (alphaSlider != null)
        {
            alphaSlider.minValue = 0f;
            alphaSlider.maxValue = 1f;
            alphaSlider.value = defaultAlpha;
            alphaSlider.onValueChanged.AddListener(OnAlphaSliderChanged);
        }
        
        if (resetButton != null)
        {
            resetButton.onClick.AddListener(ResetToDefault);
        }
        
        // 更新显示
        UpdateAlphaDisplay();
        
        // 应用默认透明度
        SetBodyAlpha(defaultAlpha);
    }
    
    private void OnAlphaSliderChanged(float value)
    {
        SetBodyAlpha(value);
        UpdateAlphaDisplay();
    }
    
    private void UpdateAlphaDisplay()
    {
        if (alphaValueText != null && alphaSlider != null)
        {
            float percentage = alphaSlider.value * 100f;
            alphaValueText.text = $"{percentage:F0}%";
        }
    }
    
    /// <summary>
    /// 设置Body的透明度
    /// </summary>
    /// <param name="alpha">透明度值</param>
    public void SetBodyAlpha(float alpha)
    {
        if (materialProcessor != null)
        {
            materialProcessor.SetBodyAlpha(alpha);
            
            // 通知状态保持器保存新状态
            if (MaterialStateKeeper.Instance != null)
            {
                MaterialStateKeeper.Instance.SetAndSaveBodyAlpha(alpha);
            }
            
            if (showDebugInfo)
            {
                Debug.Log($"BodyAlphaController: 设置Body透明度为 {alpha:F2}");
            }
        }
    }
    
    /// <summary>
    /// 重置到默认透明度
    /// </summary>
    public void ResetToDefault()
    {
        if (alphaSlider != null)
        {
            alphaSlider.value = defaultAlpha;
        }
        SetBodyAlpha(defaultAlpha);
        UpdateAlphaDisplay();
        
        if (showDebugInfo)
        {
            Debug.Log("BodyAlphaController: 重置Body透明度到默认值");
        }
    }
    
    /// <summary>
    /// 获取当前Body的透明度
    /// </summary>
    /// <returns></returns>
    public float GetCurrentBodyAlpha()
    {
        if (materialProcessor != null)
        {
            return materialProcessor.GetBodyAlpha();
        }
        return defaultAlpha;
    }
    
    /// <summary>
    /// 设置为完全不透明
    /// </summary>
    public void SetOpaque()
    {
        if (alphaSlider != null)
        {
            alphaSlider.value = 1f;
        }
        SetBodyAlpha(1f);
        UpdateAlphaDisplay();
    }
    
    /// <summary>
    /// 设置为半透明
    /// </summary>
    public void SetSemiTransparent()
    {
        float semiAlpha = 0.5f;
        if (alphaSlider != null)
        {
            alphaSlider.value = semiAlpha;
        }
        SetBodyAlpha(semiAlpha);
        UpdateAlphaDisplay();
    }
    
    void OnDestroy()
    {
        // 清理事件监听
        if (alphaSlider != null)
        {
            alphaSlider.onValueChanged.RemoveListener(OnAlphaSliderChanged);
        }
        
        if (resetButton != null)
        {
            resetButton.onClick.RemoveListener(ResetToDefault);
        }
    }
}