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

class NpcShopManager : MonoBehaviour
{
    [SerializeField]
    public Dialogue DialogueTemplate;

    /* We user object CLONED TO PREVENT overwritting changes in main object inassets */
    private Dialogue Dialogue;

    [SerializeField]
    public Shop shop;

    public void Start()
    {
        // TODO - remove - we want ot register ir manually because condition below is not meeted in test env
        this.RegisterShop();


        // 1. Create dialogue object from template

        // 2. Set speaker name
        Dialogue = Instantiate(DialogueTemplate);
        Dialogue.SetSpeakerName(gameObject.GetComponent<NPC>().name);

        // if its new game or we dont have any save from this map - use deffault shop settings / content
        // else overwrite value by saved one
        if (OnMapAppearanceMethod.GameStatus == GameStatus.NewGame ||
            (OnMapAppearanceMethod.Gateway != OnMapAppearanceMethodEnum.NewGame || ShopUIManager.Instance.GetList().Count == 0)
        )
            // 0. Register shop in scene shop manager
            this.RegisterShop();
        //ShopUIManager.Instance.Add(shop);
        else
            shop = ShopUIManager.Instance.GetList().Where(shop => { 
                return shop.Npc == gameObject.GetComponent<NPC>().name && shop.Map == SceneManager.GetActiveScene().name; 
            }).First();
    }

    public void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.gameObject.tag == "Player" && gameObject.GetComponent<NPC>().State == NPCStateEnum.Trading && !ShopUIManager.Instance.GetPanelStatus())
        {
            // 1. Open dialogue panel

            // 2. Open shop

            OpenShop();
        }
    }

    public void OnTriggerExit2D(Collider2D collision)
    {
        if (collision.gameObject.tag == "Player")
        {
            CloseShop();
        }
    }

    public void RegisterShop()
    {
        // 1. Set owner name
        shop.Npc = gameObject.name;

        // 2. Create new Shop instance in scene registry list
        ((SceneShopDataManager)SceneShopDataManager.Instance)
            .RegisterShop(
                new Shop(
                    SceneManager.GetActiveScene().name,
                    gameObject.name,
                    shop.GetContent()
                )
            );
    }

    public void OpenShop()
    {
        Debug.Log("OpenShop");

        // Open shopa action - invoked as dialogue end action
        ShopUIManager.Instance.CurrentShopOwnerName = gameObject.GetComponent<NPC>().name;
        ShopUIManager.Instance.OpenPanel();

    }

    public void CloseShop()
    {
        ShopUIManager.Instance.ClosePanel();

        ShopUIManager.Instance.CurrentShopOwnerName = "";
    }
}