using UnityEngine;
using UnityEngine.UI;
using DG.Tweening;
using System.Collections.Generic;

public class sliderProgressSc : MonoBehaviour
{
    [Header("Slider Reference")]
    [SerializeField] private Slider targetSlider;
    
    [Header("Dots Configuration")]
    [SerializeField] private List<Transform> dots = new List<Transform>();
    [SerializeField] private List<Image> dotImages = new List<Image>();
    
    [Header("Slider Animation")]
    [SerializeField] private float sliderAnimationDuration = 0.8f;
    [SerializeField] private Ease sliderEase = Ease.OutCubic;
    [SerializeField] private bool animateSliderValue = true;
    
    [Header("Dot Animation Settings")]
    [SerializeField] private float scaleDuration = 0.3f;
    [SerializeField] private float colorDuration = 0.2f;
    [SerializeField] private Vector3 activeScale = Vector3.one * 1.2f;
    [SerializeField] private Vector3 inactiveScale = Vector3.one;
    [SerializeField] private Ease scaleEase = Ease.OutBack;
    [SerializeField] private float dotStaggerDelay = 0.05f; // Delay between dot activations
    
    [Header("Colors")]
    [SerializeField] private Color inactiveColor = new Color(0.3f, 0.3f, 0.3f, 0.6f);
    [SerializeField] private Color activeColor = new Color(0f, 1f, 0.4f, 1f); // Bright green
    [SerializeField] private Color pulseColor = new Color(1f, 1f, 0.4f, 1f); // Yellow pulse
    
    private float previousSliderValue;
    private int lastActivatedDot = -1;
    private Tween sliderTween;
    private bool isAnimating = false;
    
    void Start()
    {
        InitializeSlider();
        SetupInitialState();
    }
    
    void Update()
    {
        // Check if slider value changed
        if (Mathf.Abs(targetSlider.value - previousSliderValue) > 0.001f)
        {
            if (animateSliderValue && !isAnimating)
            {
                AnimateSliderToValue(targetSlider.value);
            }
            else
            {
                CheckAndAnimateDots(targetSlider.value);
            }
            previousSliderValue = targetSlider.value;
        }
    }
    
    void InitializeSlider()
    {
        if (targetSlider == null)
            targetSlider = GetComponent<Slider>();
            
        if (targetSlider == null)
        {
            Debug.LogError("No slider found! Please assign a slider reference.");
            return;
        }
        
        // Auto-populate dots if empty
        if (dots.Count == 0)
        {
           Debug.Log("No dots found! Please assign dot transforms manually.");
        }
        
        previousSliderValue = targetSlider.value;
    }
    
    void SetupInitialState()
    {
        // Set all dots to inactive state
        for (int i = 0; i < dots.Count; i++)
        {
            if (dots[i] != null)
            {
                dots[i].localScale = inactiveScale;
                
                if (i < dotImages.Count && dotImages[i] != null)
                {
                    dotImages[i].color = inactiveColor;
                }
            }
        }
        lastActivatedDot = -1;
    }
    
    void AnimateSliderToValue(float targetValue)
    {
        if (sliderTween != null && sliderTween.IsActive())
        {
            sliderTween.Kill();
        }
        
        isAnimating = true;
        float startValue = targetSlider.value;
        
        sliderTween = DOTween.To(() => targetSlider.value, x => {
            targetSlider.value = x;
            CheckAndAnimateDots(x);
        }, targetValue, sliderAnimationDuration)
        .SetEase(sliderEase)
        .OnComplete(() => {
            isAnimating = false;
        });
    }
    
    void CheckAndAnimateDots(float sliderValue)
    {
        // Calculate how many dots should be active based on slider value
        // For 10 dots: dot 0 at 0.1, dot 1 at 0.2, ..., dot 9 at 1.0
        int dotsToActivate = Mathf.FloorToInt(sliderValue * dots.Count);
        
        // Clamp to valid range
        dotsToActivate = Mathf.Clamp(dotsToActivate, 0, dots.Count);
        
        // The actual active dot index (0-based, -1 means no dots active)
        int targetActiveDot = dotsToActivate - 1;
        
        // Check if we've moved forward to activate more dots
        if (targetActiveDot > lastActivatedDot)
        {
            // Activate dots with staggered delay for better visual effect
            for (int i = lastActivatedDot + 1; i <= targetActiveDot; i++)
            {
                if (i < dots.Count && i >= 0)
                {
                    float delay = (i - (lastActivatedDot + 1)) * dotStaggerDelay;
                    ActivateDotWithDelay(i, delay);
                }
            }
            lastActivatedDot = targetActiveDot;
        }
        // Check if we've moved backward (deactivate dots)
        else if (targetActiveDot < lastActivatedDot)
        {
            // Deactivate dots from lastActivatedDot down to targetActiveDot+1
            for (int i = lastActivatedDot; i > targetActiveDot; i--)
            {
                if (i < dots.Count && i >= 0)
                {
                    DeactivateDot(i);
                }
            }
            lastActivatedDot = targetActiveDot;
        }
    }
    
    void ActivateDotWithDelay(int dotIndex, float delay)
    {
        if (dotIndex >= dots.Count || dotIndex < 0 || dots[dotIndex] == null) return;
        
        DOVirtual.DelayedCall(delay, () => ActivateDot(dotIndex));
    }
    
    void ActivateDot(int dotIndex)
    {
        if (dotIndex >= dots.Count || dotIndex < 0 || dots[dotIndex] == null) return;
        
        Transform dot = dots[dotIndex];
        
        // Scale up animation with bounce effect
        dot.DOScale(activeScale, scaleDuration).SetEase(scaleEase);
        
        // Color change to active with pulse effect
        if (dotIndex < dotImages.Count && dotImages[dotIndex] != null)
        {
            Image dotImage = dotImages[dotIndex];
            
            // Initial color change
            dotImage.DOColor(activeColor, colorDuration);
            
            // Add a subtle pulse effect
            dotImage.DOColor(pulseColor, colorDuration * 0.5f)
                .SetDelay(colorDuration)
                .SetLoops(2, LoopType.Yoyo)
                .SetEase(Ease.InOutSine);
        }
    }
    
    void DeactivateDot(int dotIndex)
    {
        if (dotIndex >= dots.Count || dotIndex < 0 || dots[dotIndex] == null) return;
        
        Transform dot = dots[dotIndex];
        
        // Scale down animation
        dot.DOScale(inactiveScale, scaleDuration * 0.7f).SetEase(Ease.OutQuad);
        
        // Color change to inactive
        if (dotIndex < dotImages.Count && dotImages[dotIndex] != null)
        {
            dotImages[dotIndex].DOColor(inactiveColor, colorDuration * 0.7f);
        }
    }
    
    // Public methods for external control
    public void SetSliderValue(float value)
    {
        if (targetSlider != null)
        {
            if (animateSliderValue)
            {
                AnimateSliderToValue(value);
            }
            else
            {
                targetSlider.value = value;
            }
        }
    }
    
    public void SetSliderValueInstant(float value)
    {
        if (targetSlider != null)
        {
            targetSlider.value = value;
            CheckAndAnimateDots(value);
        }
    }
    
    public void ResetDots()
    {
        // Kill any running animations
        if (sliderTween != null && sliderTween.IsActive())
        {
            sliderTween.Kill();
        }
        
        for (int i = 0; i < dots.Count; i++)
        {
            if (dots[i] != null)
            {
                dots[i].DOKill();
            }
            if (i < dotImages.Count && dotImages[i] != null)
            {
                dotImages[i].DOKill();
            }
        }
        
        // Reset state
        lastActivatedDot = -1;
        isAnimating = false;
        SetupInitialState();
    }
    
    // Get current progress (0-10)
    public int GetCurrentProgress()
    {
        return lastActivatedDot + 1;
    }
    
    // Check if specific dot is active
    public bool IsDotActive(int dotIndex)
    {
        return dotIndex <= lastActivatedDot;
    }
    
    void OnDestroy()
    {
        // Clean up any running tweens
        if (sliderTween != null && sliderTween.IsActive())
        {
            sliderTween.Kill();
        }
        
        for (int i = 0; i < dots.Count; i++)
        {
            if (dots[i] != null)
            {
                dots[i].DOKill();
            }
            if (i < dotImages.Count && dotImages[i] != null)
            {
                dotImages[i].DOKill();
            }
        }
    }
    
//     // Debug helper - shows current calculation values in inspector
//     [System.Serializable]
//     public class DebugInfo
//     {
//         [SerializeField] public float currentSliderValue;
//         [SerializeField] public int dotsToActivate;
//         [SerializeField] public int targetActiveDot;
//         [SerializeField] public int lastActivatedDot;
//     }
    
//     [Header("Debug Info (Runtime Only)")]
//     [SerializeField] private DebugInfo debugInfo = new DebugInfo();
    
//     void LateUpdate()
//     {
//         // Update debug info for inspector visibility
//         if (targetSlider != null)
//         {
//             debugInfo.currentSliderValue = targetSlider.value;
//             debugInfo.dotsToActivate = Mathf.FloorToInt(targetSlider.value * dots.Count);
//             debugInfo.targetActiveDot = debugInfo.dotsToActivate - 1;
//             debugInfo.lastActivatedDot = lastActivatedDot;
//         }
//     }
 }