Scriptum/Assets/Scripts/REFACTORING/Application/Item/Effects/PotionEffectsManager.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UnityEngine;

class PotionEffectsManager : ItemEffectsManager
{
    public static new PotionEffectsManager Instance;

    public override void Awake()
    {
        if (Instance == null)
        {
            Instance = this;
        }
        else
        {
            Destroy(gameObject);
        }
    }

    public override void UseItemEffect(ItemSlot itemSlot, PanelTypeEnum originPanel)
    {
        // origin panel is passed for script to be able to recognize from which list to remove the object etc...
        DetectPotionType(itemSlot);

        // use other action binded to item 2
        itemSlot.Item?.InvokeEffectAction();

        // remove potion from a slot in specific panel...
        var panelUiManager = DetectOriginPanel(originPanel);
        panelUiManager.RemoveByPosition(itemSlot.Number);
        panelUiManager.UpdateList(); //  refresh view
    }

    public void DetectPotionType(ItemSlot itemSlot)
    {
        var item = itemSlot.Item;
        // detect potion and use matched action

        if (item.name == "Full Health Potion")
        {
            HealthBigPotion();
        }
        else if(item.name == "Medium Health Potion")
        {
            HealthMediumPotion();
        }
        else if(item.name == "Small Health Potion")
        {
            HealthSmallPotion();
        }
        else if(item.name == "Beer")
        {
            GameObject.FindObjectOfType<CamerFollow>().Drink();
        }
        else if(item.name == "Crab Venom")
        {
            CrabPoison();
        }
        else if(item.name == "Mushroom Venom")
        {
            MushroomPoison();
        }
    }

    // use below function in one above - depending on the condition
    public void HealthBigPotion()
    {
        var playerMaxHealth = PlayerPrefs.GetFloat("maxHealth");
        var playerCurrentHealth = PlayerPrefs.GetFloat("health");
        playerCurrentHealth = playerMaxHealth;
        PlayerPrefs.SetFloat("health", playerCurrentHealth);
    }

    public void HealthMediumPotion()
    {
        var playerMaxHealth = PlayerPrefs.GetFloat("maxHealth");
        var playerCurrentHealth = PlayerPrefs.GetFloat("health");
        if(playerCurrentHealth < playerMaxHealth / 2)
        {
            playerCurrentHealth = playerCurrentHealth + playerMaxHealth / 2;
        }
        else
        {
            playerCurrentHealth = playerMaxHealth;
        }
        PlayerPrefs.SetFloat("health", playerCurrentHealth);
    }

    public void HealthSmallPotion()
    {
        var playerMaxHealth = PlayerPrefs.GetFloat("maxHealth");
        var playerCurrentHealth = PlayerPrefs.GetFloat("health");
        if(playerCurrentHealth < playerMaxHealth*3/4)
        {
            playerCurrentHealth = playerCurrentHealth + playerMaxHealth / 4;
        }
        else
        {
            playerCurrentHealth = playerMaxHealth;
        }
        PlayerPrefs.SetFloat("health", playerCurrentHealth);
    }

    public void CrabPoison()
    {
        var playerMaxHealth = PlayerPrefs.GetFloat("maxHealth");
        var playerCurrentHealth = PlayerPrefs.GetFloat("health");

        playerCurrentHealth = playerMaxHealth * 3/4;

        PlayerPrefs.SetFloat("health", playerCurrentHealth);
    }

    public void MushroomPoison()
    {
        var playerMaxHealth = PlayerPrefs.GetFloat("maxHealth");
        var playerCurrentHealth = PlayerPrefs.GetFloat("health");

        playerCurrentHealth = playerMaxHealth * 1 / 2;

        PlayerPrefs.SetFloat("health", playerCurrentHealth);
    }
    // Add and invoke your own functions
}