using BrewMonster;
using System.Collections;
using Unity.Cinemachine;
using UnityEngine;

public class CinemachineTouchOrbit : MonoSingleton<CinemachineTouchOrbit>
{
    public CinemachineCamera cineCam;
    public Transform player;

    [Header("Settings")]
    public float inputSpeed = 0.2f;
    public float clampPitchMin = -30f;
    public float clampPitchMax = 60f;
    public float distance = 5f; // khoảng cách camera phía sau

    float yawOffset = 0f;  // phần xoay do input
    float pitchOffset = 0f;

    Vector2 lastPointerPos;
    bool isDragging = false;

    void LateUpdate()
    {
        if (player == null || cineCam == null) return;

        // 1. Lấy hướng player (yaw)
        float playerYaw = player.eulerAngles.y;

        // 2. Lấy input delta (chuột / touch) để xoay camera thêm
        Vector2 delta = GetInputDelta();
        yawOffset += delta.x * inputSpeed;
        pitchOffset -= delta.y * inputSpeed;
        pitchOffset = Mathf.Clamp(pitchOffset, clampPitchMin, clampPitchMax);

        // 3. Tính rotation cuối = playerYaw + yawOffset
        float finalYaw = playerYaw + yawOffset;
        float finalPitch = pitchOffset;

        // 4. Cập nhật vị trí + hướng camera
        Quaternion rot = Quaternion.Euler(finalPitch, finalYaw, 0f);
        Vector3 offset = rot * new Vector3(0, 0, -distance);
        cineCam.transform.position = player.position + offset;
        cineCam.transform.rotation = rot;
    }

    Vector2 GetInputDelta()
    {
        // Nếu test trên editor / PC
#if UNITY_EDITOR || UNITY_STANDALONE
        if (Input.GetMouseButtonDown(0))
        {
            lastPointerPos = Input.mousePosition;
            isDragging = true;
        }
        if (Input.GetMouseButtonUp(0))
        {
            isDragging = false;
        }
        if (isDragging && Input.GetMouseButton(0))
        {
            Vector2 cur = Input.mousePosition;
            Vector2 delta = cur - lastPointerPos;
            lastPointerPos = cur;
            // Nếu chạm vùng joystick thì ignore
            return delta;
        }
        return Vector2.zero;
#else
        // Mobile: xử lý touch tương tự code bạn đã có
        // foreach (Touch t in Input.touches)
        // {
        //     if (t.phase == TouchPhase.Began)
        //     {
        //         lastPointerPos = t.position;
        //         isDragging = true;
        //     }
        //     else if (t.phase == TouchPhase.Moved && isDragging)
        //     {
        //         Vector2 cur = t.position;
        //         Vector2 delta = cur - lastPointerPos;
        //         lastPointerPos = cur;
        //         if (RectTransformUtility.RectangleContainsScreenPoint(joystickArea, cur))
        //             return Vector2.zero;
        //         return delta;
        //     }
        //     else if (t.phase == TouchPhase.Ended || t.phase == TouchPhase.Canceled)
        //     {
        //         isDragging = false;
        //     }
        // }
        return Vector2.zero;
#endif
    }
    public void SetOrbitTarget(Transform target)
    {
        player = target;
    }
}