using System.Collections.Generic;
using UnityEngine;
using System.Collections;
using System.ComponentModel;
using UnityEditor.SceneManagement;

public class PlayerSkillTree
{

    private static PlayerSkillTree _instance;
    private Dictionary<PotionHandler.PotionType, PotionHandler> potionHandlers = new Dictionary<PotionHandler.PotionType, PotionHandler>();
    private int health = 100;
    private int maxHealth = 100;

    public int MaxHealth { get => maxHealth; set => maxHealth = value; }

    public static PlayerSkillTree Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = new PlayerSkillTree();
            }
            return _instance;
        }
    }


    public enum Skills
    {
        Dash,
        Reflection1,
        Reflection2,
        Shockwave,
        Spin, 
        Potion,
        Arrows1,
        Arrows2
    }

    private List<Skills> playerSkills;

    public PlayerSkillTree()
    {
        playerSkills = new List<Skills>();
        
    }

    public void RegisterPotionHandler(PotionHandler.PotionType type, PotionHandler handler)
    {
        if (!potionHandlers.ContainsKey(type))
        {
            potionHandlers.Add(type, handler);
        }
        else
        {
            potionHandlers[type] = handler;
        }
    }

    public void UnlockSkill(Skills skill, PotionHandler.PotionType potionType)
    {

        if(skill == Skills.Potion){
            if (potionHandlers.TryGetValue(potionType, out PotionHandler handler))
            {
                handler.AddPotion(potionType);
            }
            return;
        }

        if (playerSkills.Contains(skill)) return;

        playerSkills.Add(skill);
    }

    public bool TryUsePotion(PotionHandler.PotionType potionType)
    {
        if (potionHandlers.TryGetValue(potionType, out PotionHandler handler))
        {
            if (handler.IsEmpty(potionType)) return false;
            return handler.UsePotion(potionType);
        }
        return false;
    }

    public int GetHealth() { return health; }
    
    public void SetHealth(int value) 
    {
        if(value + health > maxHealth)
        {
            health = maxHealth;
            return;
        }
        
        if(health + value < 0)
        {
            health = 0;
            return;
        }
        
        health += value;
    }


    public bool IsSkillUnlocked(Skills skill)
    {
        return playerSkills.Contains(skill);
    }

    public List<Skills> GetPlayerSkills() { return playerSkills; }


}