using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerController : MonoBehaviour
{
    private MazeGenerator mazeGenerator;
    private MazeNode[,] nodes;
    private Vector2Int currentIndex;
    private float moveCooldown = 0.2f;
    private float lastMoveTime = 0f;

    private void Start()
    {
        mazeGenerator = FindFirstObjectByType<MazeGenerator>();
        nodes = mazeGenerator.GetNodes();

        currentIndex = new Vector2Int(0, 0); // Start node
        transform.position = mazeGenerator.GetNodeWorldPosition(currentIndex.x, currentIndex.y);
    }

    public void InitMaze(MazeGenerator generator)
    {
        this.mazeGenerator = generator;
        this.nodes = generator.GetNodes();

        currentIndex = new Vector2Int(0, 0);
        transform.position = mazeGenerator.GetNodeWorldPosition(currentIndex.x, currentIndex.y);
    }

    public void MoveToStart()
    {
        Transform node = GameObject.Find("nodes_0_0")?.transform;

        if (node != null)
        {
            transform.position = node.position + new Vector3(0, 0, -1);
        }
    }

    private void Update()
    {
        if (Time.time - lastMoveTime < moveCooldown)
            return;

        Vector2Int newIndex = currentIndex;

        if (Input.GetKeyDown(KeyCode.W) && !nodes[currentIndex.x, currentIndex.y].IsWall(MazeNode.Directions.TOP))
        {
            newIndex += Vector2Int.up;
        }
        else if (Input.GetKeyDown(KeyCode.S) && !nodes[currentIndex.x, currentIndex.y].IsWall(MazeNode.Directions.BOTTOM))
        {
            newIndex += Vector2Int.down;
        }
        else if (Input.GetKeyDown(KeyCode.A) && !nodes[currentIndex.x, currentIndex.y].IsWall(MazeNode.Directions.LEFT))
        {
            newIndex += Vector2Int.left;
        }
        else if (Input.GetKeyDown(KeyCode.D) && !nodes[currentIndex.x, currentIndex.y].IsWall(MazeNode.Directions.RIGHT))
        {
            newIndex += Vector2Int.right;
        }
        else
        {
            return;
        }

        // Cek batas array
        if (newIndex.x < 0 || newIndex.x >= nodes.GetLength(0) || newIndex.y < 0 || newIndex.y >= nodes.GetLength(1))
            return;

        currentIndex = newIndex;
        transform.position = mazeGenerator.GetNodeWorldPosition(currentIndex.x, currentIndex.y);
        lastMoveTime = Time.time;
    }

    private void OnTriggerEnter2D(Collider2D other)
    {
        MazeGenerator mazeGen = FindFirstObjectByType<MazeGenerator>();

        if (other.gameObject == mazeGen.finishNode)
        {
            Debug.Log("FINISH! Level selesai.");

            LoadNextLevel();
        }
    }

    void LoadNextLevel()
    {
        UnityEngine.SceneManagement.SceneManager.LoadScene(
            UnityEngine.SceneManagement.SceneManager.GetActiveScene().buildIndex + 1
        );
    }

}