using System;
using TMPro;
using UnityEngine;

public class GameManager : MonoBehaviour
{
	#region Statication

	public static GameManager instance;

	private void Awake()
	{
		if (instance != null && instance != this)
		{
			Destroy(gameObject);
			return;
		}
		instance = this;
		DontDestroyOnLoad(this);
	}

	#endregion

	[Header("Game Stats")] 
	public int continues;
	public string time;
	public int wave;
	public int deflections;
	public int projectilesShot;
	public int projectilesHit;
	public string accuracy;
	public int livesLost;
	[Header("Pause UI")] 
	public bool canPause = true;
	public bool isEndless = false;
	[Header("Game Over")] 
	[SerializeField] private DialogueScript winCutscene;
 	public bool gameOver;

    public void EndGame()
    {
	    SetPause(true);
	    gameOver = true;
	    canPause = false;
	    time = TimeSpan.FromSeconds(Time.timeSinceLevelLoad).ToString(@"mm\:ss");
	    wave = WaveManager.instance.wave-1;
	    WaveManager.instance.musicSource.Stop();
	    accuracy = ((float)projectilesHit / projectilesShot).ToString(@"P");
    }
	public void LoseGame()
	{
		WaveManager.instance.loseUI.SetActive(true);
		EndGame();
		WaveManager.instance.statsUI.SetUI();
	}

	public void WinGame()
	{
		EndGame();
		LevelSwitcher.instance.SwitchLevel(2, winCutscene);
		SetPause(false);
	}

	public void ExitGame()
	{
		LevelSwitcher.instance.SwitchLevel(0);
		SetPause(false);
		canPause = true;
		ClearStats();
	}

	public void RestartGame()
	{
		LevelSwitcher.instance.SwitchLevel(1);
		canPause = true;
		SetPause(false);
		ClearStats();
	}

	public void ContinueGame()
	{
		gameOver = false;
		canPause = true;
		WaveManager.instance.loseUI.SetActive(false);
		SetPause(false);
		WaveManager.instance.musicSource.Play();
		WaveManager.instance.player.health = WaveManager.instance.player.maxHealth;
		continues++;
	}

	private void ClearStats()
	{
		continues = 0;
		wave = 0;
		projectilesHit = 0;
		projectilesShot = 0;
		accuracy = "";
		deflections = 0;
		livesLost = 0;
		time = "";
	}

	public void SetPause(bool state)
	{
		if (state)
		{
			Time.timeScale = 0f;
		}
		else
		{
			Time.timeScale = 1f;
		}
	}

	public void SetPauseMenu()
	{
		if (!gameOver && canPause && WaveManager.instance)
		{
			if (!WaveManager.instance.pauseMenu.activeSelf)
			{
				WaveManager.instance.pauseMenu.SetActive(true);
				SetPause(true);
			}
			else
			{
				WaveManager.instance.pauseMenu.SetActive(false);
				SetPause(false);
			}
		}
	}

	private void Update()
	{
		if (Input.GetKeyDown(KeyCode.Escape) && !DialogueManager.instance.dialogueActive) //we need to convert this to a better input system
		{
			SetPauseMenu();
		}
	}
}