using UnityEngine;

public class Paddle : MonoBehaviour
{
    public float moveSpeed = 10f;
    public float boundaryOffset = 0.5f;
    public float launchInfluence = 0.7f; // How much paddle movement affects ball launch
    public float bounceInfluence = 1.2f; // How much paddle movement affects bounce
    
    private float screenHalfWidth;
    private float paddleHalfWidth;
    private Camera mainCamera;
    private Vector3 lastPosition;
    private Vector2 currentVelocity;
    private bool isTouching = false;
    private float touchStartX;
    private float paddleStartX;
    private bool isMobile;

    void Start()
    {
        mainCamera = Camera.main;
        paddleHalfWidth = transform.localScale.x / 2f;
        screenHalfWidth = mainCamera.aspect * mainCamera.orthographicSize;
        lastPosition = transform.position;
        
        // Определяем, запущено ли на мобильном устройстве
        isMobile = Application.isMobilePlatform;
    }

    void Update()
    {
        if (isMobile)
        {
            HandleTouchInput();
        }
        else
        {
            HandleDesktopInput();
        }

        // Calculate current velocity
        currentVelocity = (transform.position - lastPosition) / Time.deltaTime;
        lastPosition = transform.position;
    }

    private void HandleTouchInput()
    {
        if (Input.touchCount > 0)
        {
            Touch touch = Input.GetTouch(0);

            switch (touch.phase)
            {
                case TouchPhase.Began:
                    isTouching = true;
                    touchStartX = touch.position.x;
                    paddleStartX = transform.position.x;
                    break;

                case TouchPhase.Moved:
                case TouchPhase.Stationary:
                    if (isTouching)
                    {
                        // Вычисляем смещение в пикселях
                        float touchDelta = touch.position.x - touchStartX;
                        
                        // Конвертируем в мировые координаты
                        float worldDelta = (touchDelta / Screen.width) * (screenHalfWidth * 2);
                        
                        // Вычисляем новую позицию
                        float newX = Mathf.Clamp(paddleStartX + worldDelta,
                            -screenHalfWidth + paddleHalfWidth + boundaryOffset,
                            screenHalfWidth - paddleHalfWidth - boundaryOffset);
                        
                        // Плавно перемещаем к целевой позиции
                        float currentX = transform.position.x;
                        newX = Mathf.MoveTowards(currentX, newX, moveSpeed * Time.deltaTime);
                        
                        // Применяем позицию
                        transform.position = new Vector3(newX, transform.position.y, transform.position.z);
                    }
                    break;

                case TouchPhase.Ended:
                case TouchPhase.Canceled:
                    isTouching = false;
                    break;
            }
        }
    }

    private void HandleDesktopInput()
    {
        // Get input
        float moveInput = Input.GetAxis("Horizontal");
        
        // Calculate new position
        Vector3 pos = transform.position;
        pos.x += moveInput * moveSpeed * Time.deltaTime;
        
        // Clamp position to screen bounds
        float clampedX = Mathf.Clamp(pos.x, 
            -screenHalfWidth + paddleHalfWidth + boundaryOffset,
            screenHalfWidth - paddleHalfWidth - boundaryOffset);
        
        // Update position
        transform.position = new Vector3(clampedX, pos.y, pos.z);
    }

    public Vector2 GetCurrentVelocity()
    {
        return currentVelocity;
    }

    public Vector2 GetLaunchVelocity()
    {
        return currentVelocity * launchInfluence;
    }

    public Vector2 GetBounceVelocity()
    {
        return currentVelocity * bounceInfluence;
    }
}