using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using Breakout;
using Unity.Mathematics;
using UnityEngine;
using Random = UnityEngine.Random;

public class BreakoutManager : MonoBehaviour
{
    private static BreakoutManager _instance;
    public static BreakoutManager Instance { get { return _instance; } }

    public GameObject defaultBreakablePrefab;
    public GameObject extraBallBreakablePrefab;

    public List<Transform> spawnPoints;
    
    public float timeBetweenRows = 5f;
    public float startRowSpeed = 0.15f;
    private float speedIncreasePerRow = 0.01f;
    public float extraBallBreakableChance = 0.1f;
    
    private float nextRowTime;
    private float currentRowSpeed;

    private bool gameStarted;
    
    private void Awake()
    {
        if (_instance != null && _instance != this)
        {
            Destroy(gameObject);
        } else {
            _instance = this;
        }

        gameStarted = true;
        Events.OnBreakoutEndGame += EndGame;
        nextRowTime = Time.time;
        currentRowSpeed = startRowSpeed;
    }

    void OnDestroy()
    {
        Events.OnBreakoutEndGame -= EndGame;
    }

    void Update()
    {
        if (!gameStarted) return;
        
        if (nextRowTime < Time.time)
        {
            SpawnRow();
        }
    }

    void StartGame()
    {
        gameStarted = true;
        SpawnRow();
    }

    void EndGame()
    {
        gameStarted = false;
    }

    void SpawnRow()
    {
        nextRowTime = Time.time + timeBetweenRows;
        //currentRowSpeed += speedIncreasePerRow;

        foreach (var point in spawnPoints)
        {
            GameObject box;
            
            if (Random.value <= extraBallBreakableChance)
            {
                box = Instantiate(extraBallBreakablePrefab, point.position, Quaternion.identity, null);
            }
            else
            {
                box = Instantiate(defaultBreakablePrefab, point.position, Quaternion.identity, null);
            }

            var cube = box.GetComponent<BreakableCube>();

            cube.speed.x = currentRowSpeed;
        }
        
        Events.BreakoutSetSpeed(currentRowSpeed);
    }
}