using Cinemachine;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.Events;

[System.Serializable] public class StartGame : UnityEvent { }

public class GameController : MonoBehaviour{

    [SerializeField] Vector3 playerStartPos = Vector3.zero;

    [Space]
    public int numberOfCoins;
    [SerializeField] TextMeshProUGUI coinsText = default;

    [Space]
    [SerializeField] Vector3 spawnerExitPosition = Vector3.zero;
    public List<Vector3> spawnerPositions;

    List<EnemyController> deadEnemies;
    [SerializeField, Range(0f, 15f)] float timeBetweenSpawns = 7.5f;
    float currentTime;
    int currentEnemy;

    public List<EnemyController> enemies = new List<EnemyController>();

    [HideInInspector] public StartGame onStart;
    bool started;

    [SerializeField] CinemachineVirtualCamera dollyTrackCamera = default;
    [SerializeField, Range(.1f, 5f)] float timeToStart = 3f;

    // Start is called before the first frame update
    void Start(){
        limboEnemies = new List<Vector3>();
        deadEnemies = new List<EnemyController>();
        currentTime = timeBetweenSpawns - 2;
        AudioManager.instance.Stop("Menu");
        AudioManager.instance.Play("Intro");
        StartCoroutine(StartGame());
    }

    List<Vector3> limboEnemies;

    public void EnemyDeath(EnemyController enemy){
        enemy.gameObject.SetActive(false);

        foreach(Vector3 spawnPos in spawnerPositions){
            deadEnemies.Add(enemy);
            enemy.transform.position = spawnPos + Vector3.up;
            spawnerPositions.Remove(spawnPos);
            StartCoroutine(RespawnEnemy(enemy));
            break;
        }
    }

    public void PlayerDeath(PlayerController player){
        player.gameObject.SetActive(false);
        player.transform.position = playerStartPos;
        player.Respawn();
        player.gameObject.SetActive(true);

        for (int i = 0; i < spawnerPositions.Count; i++){
            enemies[i].gameObject.SetActive(false);
            enemies[i].transform.position = spawnerPositions[i] + Vector3.up;
            enemies[i].OnPlayerDie();
            enemies[i].gameObject.SetActive(true);
            enemies[i].directionLooking = Vector3.forward;
            enemies[i].canMove = false;
        }

        deadEnemies.Clear();
        limboEnemies.Clear();
        currentEnemy = 0;
        currentTime = timeBetweenSpawns - 2;
    }

    IEnumerator RespawnEnemy(EnemyController enemy){
        yield return new WaitForSeconds(.5f);
        spawnerPositions.Add(enemy.transform.position + Vector3.down);
        limboEnemies.Remove(enemy.transform.position + Vector3.down);
        enemy.EnterRespawn();
        enemy.gameObject.SetActive(true);
    }

    bool won;

    // Update is called once per frame
    void Update(){
        dollyTrackCamera.GetCinemachineComponent<CinemachineTrackedDolly>().m_PathPosition += Time.deltaTime / timeToStart * 2;
        if(dollyTrackCamera.GetCinemachineComponent<CinemachineTrackedDolly>().m_PathPosition >= 2){
            dollyTrackCamera.enabled = false;
        }

        if (started){
            currentTime += Time.deltaTime;
            if(currentTime >= timeBetweenSpawns){
                if(currentEnemy < enemies.Count){
                    enemies[currentEnemy].positionToGo = new Vector3(spawnerExitPosition.x, enemies[currentEnemy].positionToGo.y, spawnerExitPosition.z);
                    enemies[currentEnemy].targetAngle = -90f;
                    enemies[currentEnemy].directionLooking = Vector3.left;
                    enemies[currentEnemy].canMove = true;
                    currentEnemy++;
                    currentTime = 0;
                }else if(deadEnemies.Count != 0){
                    EnemyController enemy = deadEnemies[0];
                    //EnemyController enemy = deadEnemies.Dequeue();
                    enemy.Respawn();
                    enemy.positionToGo = new Vector3(spawnerExitPosition.x, enemy.positionToGo.y, spawnerExitPosition.z);
                    enemy.targetAngle = -90f;
                    enemy.directionLooking = Vector3.left;
                    enemy.canMove = true;
                    deadEnemies.Remove(enemy);
                    currentTime = 0;
                }
            }else if(deadEnemies.Count == 0 && currentEnemy >= enemies.Count){
                currentTime = 0;
            }
        }

        coinsText.text = "x" + numberOfCoins;

        if(numberOfCoins == 0 && !won){
            GameOverCanvas.instance.Win();
            won = true;
        }
    }

    int currentScale;
    public void PlayButtonScale(){
        switch (currentScale){
            case 0:
                AudioManager.instance.PlayOneShot("Scale1");
                currentScale++;
                break;
            case 1:
                AudioManager.instance.PlayOneShot("Scale2");
                currentScale++;
                break;
            case 2:
                AudioManager.instance.PlayOneShot("Scale3");
                currentScale++;
                break;
            case 3:
                AudioManager.instance.PlayOneShot("Scale4");
                currentScale++;
                break;
            case 4:
                AudioManager.instance.PlayOneShot("Scale2");
                currentScale++;
                break;
            case 5:
                AudioManager.instance.PlayOneShot("Scale3");
                currentScale++;
                break;
            case 6:
                AudioManager.instance.PlayOneShot("Scale4");
                currentScale++;
                break;
            case 7:
                AudioManager.instance.PlayOneShot("Scale5");
                currentScale++;
                break;
            case 8:
                AudioManager.instance.PlayOneShot("Scale3");
                currentScale++;
                break;
            case 9:
                AudioManager.instance.PlayOneShot("Scale4");
                currentScale++;
                break;
            case 10:
                AudioManager.instance.PlayOneShot("Scale5");
                currentScale++;
                break;
            case 11:
                AudioManager.instance.PlayOneShot("Scale6");
                currentScale++;
                break;
            case 12:
                AudioManager.instance.PlayOneShot("Scale5");
                currentScale++;
                break;
            case 13:
                AudioManager.instance.PlayOneShot("Scale4");
                currentScale++;
                break;
            case 14:
                AudioManager.instance.PlayOneShot("Scale3");
                currentScale++;
                break;
            case 15:
                AudioManager.instance.PlayOneShot("Scale2");
                currentScale = 0;
                break;
        }
    }

    IEnumerator StartGame(){
        yield return new WaitForSeconds(timeToStart + 2.5f);
        onStart.Invoke();
        AudioManager.instance.Play("Main");
        started = true;
    }

    void OnDrawGizmos(){
        Gizmos.color = Color.green;
        Gizmos.DrawSphere(spawnerExitPosition, .2f);
    }
}