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

public class GameBehavior : MonoBehaviour, IManager
{
    private string _state;
 
    public string State 
    {
    get { return _state; }
    set { _state = value; }
    }

    public string labelText = "Collect all 4 items and win your freedom!";
     
    public int maxItems = 4;
    public bool showWinScreen = false;
    public bool showLossScreen = false;

    public Stack<string> lootStack = new Stack<string>();

    private int _itemsCollected = 0;
     public int Items
     {
        get { return _itemsCollected; }
        set { 
            _itemsCollected = value; 
            //Debug.LogFormat("Items: {0}", _itemsCollected);

             if(_itemsCollected >= maxItems)
             {
                labelText = "You've found all the items!";
                showWinScreen = true;
                Time.timeScale = 0f;
             }                               
             else
             {
                labelText = "Item found, only " + (maxItems - _itemsCollected) + " more to go!";
             }
        }
    }
 
     private int _playerHP = 10;
    public int HP 
    {
    get { return _playerHP; }
    set { 
        _playerHP = value; 
        if(_playerHP <= 0)
            {
                labelText = "You want another life with that?";
                showLossScreen = true;
                Time.timeScale = 0;
            }
            else
            {
                labelText = "Ouch... that's got hurt.";
            }
        }
    }

    public delegate void DebugDelegate(string newText);
    public DebugDelegate debug = Print;

    void Start()
    {
        Initialize();

        InventoryList<string> inventoryList = new InventoryList<string>();
        inventoryList.SetItem("Potion");
        Debug.Log(inventoryList.item);
    }
 
     public void Initialize() 
    {
        _state = "Manager initialized..";
        _state.FancyDebug();
        debug(_state);
        LogWithDelegate(debug);

        GameObject player = GameObject.Find("Player");
        PlayerBehavior playerBehavior = player.GetComponent<PlayerBehavior>();
        playerBehavior.playerJump += HandlePlayerJump;

        lootStack.Push("Sword of Doom");
        lootStack.Push("HP+");
        lootStack.Push("Golden Key");
        lootStack.Push("Winged Boot");
        lootStack.Push("Mythril Bracers");
    }

    public void HandlePlayerJump()
     {
          debug("Player has jumped...");
     }

    public static void Print(string newText)
    {
        Debug.Log(newText);
    }

    public void LogWithDelegate(DebugDelegate del)
    {
        del("Delegating the debug task...");
    }

    void OnGUI()
    {
        GUI.Box(new Rect(20, 20, 150, 25), "Player Health:" + _playerHP);
        GUI.Box(new Rect(20, 50, 150, 25), "Items Collected: " + _itemsCollected);
        GUI.Label(new Rect(Screen.width / 2 - 100, Screen.height - 50, 300, 50), labelText);    

        if (showWinScreen)
        {
            if (GUI.Button(new Rect(Screen.width/2 - 100,    
            Screen.height/2 - 50, 200, 100), "YOU WON!"))
            {
                Utilities.RestartLevel(0);
            }
        }

        if(showLossScreen)
        {
            if (GUI.Button(new Rect(Screen.width / 2 - 100, 
            Screen.height / 2 - 50, 200, 100), "You lose..."))
            {
                try
                 {
                     Utilities.RestartLevel(-1);
                     debug("Level restarted successfully...");
                 }
                 catch (System.ArgumentException e)
                 {
                    Utilities.RestartLevel(0);
                    debug("Reverting to scene 0: " + e.ToString());
                 }
                finally 
                {
                    debug("Restart handled...");
                }
            }
        }
    }

    public void PrintLootReport()
    {
        var currentItem = lootStack.Pop();
        var nextItem = lootStack.Peek();
        Debug.LogFormat("You got a {0}! Keep going, you've got a good chance of finding a {1} next.", currentItem, nextItem);
        Debug.LogFormat("There are {0} random loot items waiting for you!", lootStack.Count);
    }
}