using Assets.Scripts;
using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using static GameHandler;

public class TileSpawner : SingletonMB<TileSpawner>
{
    #region PROPERTIES
    #endregion
    #region VARIABLES

    private GameHandler _gameHandler;

    [SerializeField] private int maxTile = 6;
    [SerializeField] private GameObject tilePrefab;
    [SerializeField] private float tileLength = 15f;
    [SerializeField] private float tileMinX = 15f;

    private List<Transform> tileList = new List<Transform>();

    private GameObject tilesParent;
    private bool attemptStarted;
    private float startPositionX;

    #endregion
    #region EVENTS
    private void StartAttempt_OnAttemptStarted(object sender, AttemptEventArgs args)
    {
        attemptStarted = true;
    }
    private void EndAttempt_OnAttemptEnded(object sender, AttemptEventArgs args)
    {
        attemptStarted = false;
    }

    #endregion
    #region METHODS

    private void SpawnAllTiles()
    {
        for (int i = 1; i <= maxTile; i++)
        {
            SpawnTile(i);
        }
    }

    private void SpawnTile(int tileNumber)
    {
        GameObject newTile = Instantiate(tilePrefab, transform.position-new Vector3((tileNumber*tileLength),0,0), Quaternion.identity, transform);
        //transform.position += new Vector3(tileLength, 0, 0);
        tileList.Add(newTile.transform);
    }

    private void ResetBackgroundPosition()
    {
        transform.position += new Vector3(tileLength, transform.position.y, transform.position.z);
    }
    private void MoveTilesHorizontally()
    {
        transform.position += new Vector3(-GameHandler.Instance.FrameDistance, 0, 0);
        if(startPositionX- transform.position.x > tileLength)
        {
            ResetBackgroundPosition();
        }

        //List<Transform> tilesToRemove = new List<Transform>();

        //foreach (Transform tileTransform in tileList)
        //{
        //    tileTransform.position += new Vector3(GameHandler.Instance.TotalDistance,0,0);;
        //    if (tileTransform.position.x < tileMinX)
        //    {
        //        tilesToRemove.Add(tileTransform);
        //    }
        //}

        //// Remove tiles that have gone off screen
        //foreach (Transform tileToRemove in tilesToRemove)
        //{
        //    tileList.Remove(tileToRemove);
        //    Destroy(tileToRemove.gameObject);
        //    SpawnTile();
        //}
    }

    private float GetStartPosition()
    {
        Camera mainCamera = Camera.main;
        float screenRight = mainCamera.ScreenToWorldPoint(new Vector3(Screen.width, 0, mainCamera.nearClipPlane)).x;
        return screenRight+2*tileLength;
    }

    #endregion
    #region LIFECYCLE

    void Start()
    {
        attemptStarted = false;

        _gameHandler = GameHandler.Instance;
        _gameHandler.OnAttemptStarted += StartAttempt_OnAttemptStarted;
        _gameHandler.OnAttemptEnding += EndAttempt_OnAttemptEnded;

        startPositionX = GetStartPosition();
        transform.position = new Vector3(startPositionX, transform.position.y, transform.position.z);


        SpawnAllTiles();
        
    }

    void Update()
    {
        if(attemptStarted)
        {
            MoveTilesHorizontally();
        }
        
    }

#endregion
}