using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using System;
using System.IO;

public class GameManager : MonoBehaviour
{
    public GameObject buttonRestart;
    public GameObject gameOverImage;
    public GameObject grid;
    HealthBar h;

    public enum GameManagerState
    {
        GamePlay,
        GameOver,
    }

    GameManagerState GMState;

    public GameManagerState getState()
    {
        return GMState;
    }

    private void Awake()
    {
        GameObject healthBar = GameObject.Find("HealthBar");
        h = healthBar.GetComponent<HealthBar>();
    }

    void Start()
    {
        GMState = GameManagerState.GamePlay;
        UpdateGameManagerState();
    }

    void Update()
    {
        if (GMState == GameManagerState.GamePlay)
             if (HealthBar.gameOver == true)
             {
                GMState = GameManagerState.GameOver;
                UpdateGameManagerState();
             }

        if (GMState == GameManagerState.GameOver)
            if (Input.GetKeyDown(KeyCode.R))
            {
                GMState = GameManagerState.GamePlay;
                UpdateGameManagerState();
            }
    }

    void UpdateGameManagerState()
    {
        switch (GMState)
        {
            case GameManagerState.GamePlay:
                if (Time.timeScale == 0.0f)
                    Time.timeScale = 1.0f;
                h.ResetHealth();
                GridGenerator gridScript = grid.GetComponent<GridGenerator>();

                if (gridScript.gridGenerated == true)
                {
                    Destroy(gridScript.player);
                    for (int i = 0; i < gridScript.roomList.Capacity; i++)
                        Destroy(gridScript.roomList[i]);
                }

                grid.GetComponent<GridGenerator>().GenerateGrid();
                gameOverImage.SetActive(false);
                break;

            case GameManagerState.GameOver:
                Time.timeScale = 0.0f;
                gameOverImage.SetActive(true);
                break;
        }
    }

    public void SetGameManagerState(GameManagerState state)
    {
        GMState = state;
        UpdateGameManagerState();
    }

    public void GameOver()
    {
        GMState = GameManagerState.GamePlay;
        UpdateGameManagerState();
    }
}