using System;
using System.Collections;
using UnityEngine;
using UnityEngine.UIElements;

public class CameraMovement : CameraManager
{
    private Vector3 dragOrigin = Vector3.zero;
    private Vector3 cameraDragOrigin = Vector3.zero;

    private bool isScroll = false;

    private bool isWebGL = false;
    private void Start()
    {
        if (Application.platform == RuntimePlatform.WebGLPlayer)
        {
            isWebGL = true;
        }
        
        BuildingRoom.Instance.OnSelectedObject += OnSelectObject;
        BuildingRoom.Instance.OnViewTypeChange += OnViewChange;
    }

    private void OnEnable()
    {
        character.enabled = false;
    }

    private void LateUpdate()
    {
        Mevment2D();
    }
    
    public void CameraZoom2D()
    {
        float scrollDelta = Input.mouseScrollDelta.y;
        if (mainCamera.orthographicSize > MinYCameraPos && scrollDelta > 0)
        {
            isScroll = true;
            mainCamera.orthographicSize -= 1;
            if (isWebGL)
            {
                Renderer selected = BuildingRoom.Instance.GetSelectRenderer();
                
                if (selected == null)
                    return;

                string param = GetJsonInfo(selected);
                JSHandler.onCameraMove(param);
            }
        } 
        else if (mainCamera.orthographicSize < MaxYCameraPos && scrollDelta < 0)
        {
            isScroll = true;
            mainCamera.orthographicSize += 1;
            if (isWebGL)
            {
                Renderer selected = BuildingRoom.Instance.GetSelectRenderer();
                
                if (selected == null)
                    return;

                string param = GetJsonInfo(selected);
                JSHandler.onCameraMove(param);
            }
        }

       else if (isScroll && scrollDelta == 0)
        {
            isScroll = false;
            if (isWebGL)
            {
                Renderer selected = BuildingRoom.Instance.GetSelectRenderer();
                
                if (selected == null)
                    return;

                string param = GetJsonInfo(selected);
                JSHandler.onCameraStop(param);
            }
        }
    }

    public void Mevment2D()
    {
        CameraZoom2D();
        
       if (Input.GetMouseButtonDown(1))
       {
           cameraDragOrigin = transform.position;
           dragOrigin = Camera.main.ScreenToViewportPoint(Input.mousePosition);
           
           if (isWebGL)
           {
               Renderer selected = BuildingRoom.Instance.GetSelectRenderer();
                
               if (selected == null)
                   return;

               string param = GetJsonInfo(selected);
               JSHandler.onCameraMove(param);
           }
       }
       
       if (Input.GetMouseButton(1))
       {
           Vector3 pos = Camera.main.ScreenToViewportPoint(Input.mousePosition) - dragOrigin;
           Vector3 desirePos = cameraDragOrigin + 1 * new Vector3 (pos.x, 0, pos.y) * speedDrag;
           Vector3 move = desirePos - transform.position;
           mainCamera.transform.position += move;
       }

       if (Input.GetMouseButtonUp(1))
       {
           if (isWebGL)
           {
               Renderer selected = BuildingRoom.Instance.GetSelectRenderer();
                
               if (selected == null)
                   return;

               string param = GetJsonInfo(selected);
               JSHandler.onCameraStop(param);
           }
       }
    }
    public string GetJsonInfo(Renderer selected)
    {
        Vector3 center = Vector3.zero;
        Vector3 screen =  Vector3.zero;
        
        if (selected.tag != "SpawnObject")
        {
            center = selected.bounds.center;
            screen =  Camera.main.WorldToScreenPoint(center);
        }

        ObjectsCoordinates jsonObject = new ObjectsCoordinates();

        jsonObject.type = selected.gameObject.tag;
        jsonObject.x = screen.x;
        jsonObject.y = screen.y;

        string param = JsonUtility.ToJson(jsonObject);

        return param;
    }
    public void OnSelectObject(bool flag)
    {
       
        IsSelectedObject = flag;
    }
    public void OnViewChange(ViewType type)
    {
        if (ViewType == ViewType.Walk)
            lastCharacterRotate = character.transform.eulerAngles;
        ViewType = type;
        
        ResetPosition();
        
        
    }
    public void ResetPosition()
    {
        character.transform.position = new Vector3(0.677f, 1.15f, 0);
    }
    private void OnDestroy()
    {
        BuildingRoom.Instance.OnSelectedObject -= OnSelectObject;
        BuildingRoom.Instance.OnViewTypeChange -= OnViewChange;
    }
    
}