using UnityEngine;
using System.Collections;
using System.Text;

public class PersistedGameDataManager : MonoBehaviour
{
	#region Unity Singleton
	private static PersistedGameDataManager _instance;

	public static PersistedGameDataManager Instance
	{
		get
		{
			if (_instance == null)
			{
				_instance = FindObjectOfType(typeof(PersistedGameDataManager)) as PersistedGameDataManager;
				if (_instance == null)
				{
					AVDebug.LogError(string.Format("No gameObject with {0} component exists. Make sure to create a gameObject with {0} component", new System.Diagnostics.StackFrame().GetMethod().DeclaringType));
				}
			}

			return _instance;
		}
	}

	void Awake()
	{
		if (_instance != null && _instance != this)
		{
			AVDebug.LogWarning(string.Format("{0} Instance already exists on another gameObject. Destroying this gameObject {1}", this.GetType().Name, gameObject.name));
			Destroy(gameObject);
			return;
		}

		_instance = this;
		DontDestroyOnLoad(gameObject);
		Load();
		RegisterListeners();
	}

	void OnDestroy()
	{
		UnregisterListeners();
	}
	#endregion

	int _totalGamesPlayed;
	int[] _totalCaught;
	int _spermicidalWavesFired;

	public int SpermicidalWavesFired { get { return _spermicidalWavesFired; } }

	void RegisterListeners()
	{
		NotificationCenter.AddListener(OnGameEnded, NotificationType.GameOver);
		NotificationCenter.AddListener(OnFiredSpermicidalWave, NotificationType.FireSpermicidalWave);
		DebugViewManager.OnDebugView += OnDebugView;
		CoreNotificationCenter.AddListener(OnResetData, CoreNotificationType.ResetData);
	}

	void UnregisterListeners()
	{
		NotificationCenter.RemoveListener(OnGameEnded, NotificationType.GameOver);
		NotificationCenter.RemoveListener(OnFiredSpermicidalWave, NotificationType.FireSpermicidalWave);
		DebugViewManager.OnDebugView -= OnDebugView;
		CoreNotificationCenter.RemoveListener(OnResetData, CoreNotificationType.ResetData);
	}

	void OnDebugView()
	{
		if (GUILayout.Button("Fake Persisted Game Data for Simulating Achievements"))
		{
			EnemyType[] enemyTypes = GetEnemyTypes();
			foreach (EnemyType e in enemyTypes)
			{
				_totalCaught[(int)e] = 10000;
			}
			_spermicidalWavesFired = 10000;
		}
		if (GUILayout.Button("Reset Persisted Game Data"))
		{
			EnemyType[] enemyTypes = GetEnemyTypes();
			foreach (EnemyType e in enemyTypes)
			{
				_totalCaught[(int)e] = 0;
			}
			_spermicidalWavesFired = 0;
			Save();
		}
	}

	void OnGameEnded(Notification note)
	{
		++_totalGamesPlayed;
		EnemyType[] enemyTypes = GetEnemyTypes();
		foreach (EnemyType e in enemyTypes)
		{
			_totalCaught[(int)e] += GameDataManager.Instance.GetEnemyTypeCaught(e);
		}
		Save();

		StringBuilder sb = new StringBuilder();
		sb.AppendLine("Persisted Game Stats");
		sb.AppendLine("====================");
		sb.AppendLine("Total Games Played: "+_totalGamesPlayed);
		sb.AppendLine("Spermicidal Waves Fired: "+_spermicidalWavesFired);
		sb.AppendLine("Total Caught:");
		foreach (EnemyType e in enemyTypes)
		{
			sb.AppendLine(string.Format("-{0}: {1}", e, GetTotalCaught(e)));
		}
		AVDebug.Log(sb.ToString());
	}

	void OnFiredSpermicidalWave(Notification note)
	{
		++_spermicidalWavesFired;
	}

	void OnResetData(CoreNotification note)
	{
		AVDebug.Log("Resetting Persisted Game Data");
		PlayerPrefs.SetInt("totalGamesPlayed", 0);
		PlayerPrefs.SetInt("spermicidalWavesFired", 0);

		//Enemies caught
		EnemyType[] enemyTypes = GetEnemyTypes();
		foreach (EnemyType e in enemyTypes)
		{
			PlayerPrefs.SetInt("total"+e.ToString()+"Caught", 0);
		}
		PlayerPrefs.Save();
		Load();
	}

	void Load()
	{
		_totalGamesPlayed = PlayerPrefs.GetInt("totalGamesPlayed", 0);

		_spermicidalWavesFired = PlayerPrefs.GetInt("spermicidalWavesFired", 0);

		//Enemies caught
		EnemyType[] enemyTypes = GetEnemyTypes();
		_totalCaught = new int[enemyTypes.Length];
		foreach (EnemyType e in enemyTypes)
		{
			_totalCaught[(int)e] = PlayerPrefs.GetInt("total"+e.ToString()+"Caught", 0);
		}
	}

	void Save()
	{
		PlayerPrefs.SetInt("totalGamesPlayed", _totalGamesPlayed);

		PlayerPrefs.SetInt("spermicidalWavesFired", _spermicidalWavesFired);

		//Enemies caught
		EnemyType[] enemyTypes = GetEnemyTypes();
		foreach (EnemyType e in enemyTypes)
		{
			PlayerPrefs.SetInt("total"+e.ToString()+"Caught", _totalCaught[(int)e]);
		}
	}

	EnemyType[] GetEnemyTypes()
	{
		return (EnemyType[])System.Enum.GetValues(typeof(EnemyType));
	}

	public int GetTotalCaught(EnemyType enemyType)
	{
		return _totalCaught[(int)enemyType];
	}

}