using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class PlayerStatsScript : MonoBehaviour {
    public static PlayerStatsScript instance = null;

    public float ExperiencePoints;
    public int PlayerLevel = 1;
    public int PlayerNextLevel;
    public float ExperienceNeededForNextLevel;

    public float LevelTwoExperienceNeeded = 100;
    public float LevelThreeExperienceNeeded = 500;
    public float LevelFourExperienceNeeded = 1000;
    public float LevelFiveExperienceNeeded = 2000;

    public ArcadeModeWaveManager WaveManager;
    public GameObject WaveManagerObject;
    public GameObject ExperiencePointsTextObject;
    public GameObject PlayerLevelTextObject;
    public GameObject ExperienceNeededForNextLevelTextObject;
    public Text ExperiencePointsText;
    public Text PlayerLevelText;
    public Text ExperienceNeededForNextLevelText;

    // Use this for initialization
    void Awake ()
    {
        DontDestroyOnLoad(gameObject);
        if (instance == null)
        {
            instance = this;
        }
        else if (instance != this)
        {
            Destroy(gameObject);
        }
    }
    void Start() {
        if (PlayerPrefs.HasKey ("PlayerLevel"))
        {
            PlayerLevel = PlayerPrefs.GetInt("PlayerLevel");
        }

        if (PlayerPrefs.HasKey ("ExperiencePoints"))
        {
            ExperiencePoints = PlayerPrefs.GetFloat("ExperiencePoints");
        }


    }

    // Update is called once per frame
    void Update () {
        WaveManagerObject = GameObject.Find("EnemyWaveManager");
        PlayerNextLevel = PlayerLevel + 1;
        if (PlayerNextLevel == 2)
        {
            ExperienceNeededForNextLevel = LevelTwoExperienceNeeded;
        }
        if (PlayerNextLevel == 3)
        {
            ExperienceNeededForNextLevel = LevelThreeExperienceNeeded;
        }
        if (WaveManagerObject != null)
        {
            WaveManager = WaveManagerObject.GetComponent<ArcadeModeWaveManager>();
            if (WaveManager.GameIsOver == true)
            {
                ExperiencePoints += WaveManager.TotalEnemiesKilled * 1.25f;
                PlayerPrefs.SetFloat("ExperiencePoints", ExperiencePoints);
            }


        }
        if (ExperiencePoints >= LevelTwoExperienceNeeded)
        {
            PlayerLevel += 1;
            PlayerPrefs.SetInt("PlayerLevel", PlayerLevel);
        }
        if (ExperiencePoints >= LevelThreeExperienceNeeded)
        {
            PlayerLevel += 1;
            PlayerPrefs.SetInt("PlayerLevel", PlayerLevel);
        }
        PlayerLevelTextObject = GameObject.Find("PlayerLevelText");
        ExperiencePointsTextObject = GameObject.Find("ExperiencePointsText");
        ExperienceNeededForNextLevelTextObject = GameObject.Find("Experience Points Needed for Next Level");
        if (PlayerLevelTextObject != null)
        {
            PlayerLevelText = PlayerLevelTextObject.GetComponent<Text>();
            PlayerLevelText.text = "LEVEL: " + PlayerLevel.ToString();
        }
        if (ExperiencePointsTextObject != null)
        {
            ExperiencePointsText = ExperiencePointsTextObject.GetComponent<Text>();
            ExperiencePointsText.text = "EXPERIENCE POINTS: " + ExperiencePoints.ToString();
        }
        if (ExperienceNeededForNextLevelTextObject != null)
        {
            ExperienceNeededForNextLevelText = ExperienceNeededForNextLevelTextObject.GetComponent<Text>();
            ExperienceNeededForNextLevelText.text = "EXPERIENCE NEEDED FOR NEXT LEVEL: " + ExperienceNeededForNextLevel.ToString();
        }

    }
}